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Патент USA US2131241

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Sept- 27, 1938-
.
F. l.. o'. wADswoR'rH
FABRICATING GLASS MACHINE AND METHOD
2,131,241
SePt- 27, 1938.
_ F. l.. o.` wADswoRTH ,
- 2,131241
FABRICATING GLASS MACHÍNE AND METHOD
Filed oct. 24, 1934
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Sept. 27, 1938.
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FAB RICATING GLASS ’MACHINE AND METHOD
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SePt- 27, 1938.
F. |_. o. WADSWQÉTH _
FABRICATING GLASS MACHINE AND METHOD
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Sept 27,1938.
F. L. O. WADSWORTH
FABRIGATING GLASS MACHINE AND METHOD
Filedr Oct. 24. 1954
u2,131,241
7 sheets-sheet -5
Sept. 2_7, 1938.
F; l.. o. WADSWORTH
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FABRICATING GLASS 'MACHINE AND METHOD
I Filed Oct. `24, 1934
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2,131,241
F. |_. o. wADswoRTH
RICAT ING GLASS MACHINE AND METHOD
Filed OCt. 24, 1934
7 Sheets-Sheet 7
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Patented Sept 27, 1938
UNITED sTATEs PATENT oEFÀl'c-E
a Frank L. 0. Wadsworth, Pittsburgh, l’a.,-asllignorv
-
to Ball Brothers Company, Muncie, Ind., a cor
poration of Indiana
Application October Z4, 1934, Serial No. 749,731
38 Claims.
'(cl. ca_-'5)
'
'
.
,
Fig.. VIII is a reduced sectional elevation-_on
My invention relates to a new type of twin or
dual oriilce feeder in combination with a three
the bent plane VIII-VIII of Fig. VII-o. a part
table forming machine which is designed and
adapted to a speed of operation which is much
»greater than that of any of the existent forms
of one of the press tables of the combination;
`
‘
Fig. IX is a cross-sectional elevation on the
plane IX-IX of Fig. VII (the sectional plane `of
Fig. I) , of apart of the forming mechanism which
of individual feeder apparatus, and which is com
mensurate with that of the largest multiple arm- is below the bottom of the forehearth;
Fig. X is a longitudinal, sectional elevation, on
feeding machines.
the plane X-X of Fig. IX, of other portions of
The primary object of my invention is, there
fore, to very materially increase the output of the forming mechanism;
Fig. XI is a composite plan view on the two
the maximum number of feeding machines which
may be used in connection with the usual form
level plane XI-XI, and the three level plane
of_melting furnace, and, in conjunction with this
Fig. XII is a reflected '(mirror) vertical section
purpose. to also substantially reduce the 'door
space required for each machine, so that a. larger
number of forming units may be assembled in
the space available for their installation. The
on the bent plane XII-XII of Fig. In;
Fig. XIII is a sectional plan view on the plane
XIII-XIII of Figs. IX and X;
.
Fig. XIV is another reflected sectional eleva
combined results of increasing the number offeeders and forming machines is to very greatly tion on the plane XIV-XIV of Fig. XIII; '
Fig. XV is a semi-diagrammatic side view of
augment the possible production of fabricated
ware from a tank of any givensize, which usually a part of the structure shown in Figs. XIII and
has, a melting capacity substantially in excess XIV;
.
Fig. XVI is an enlarged vertical section through
of that of the forming machine equipment that
one of the blow molds-on the plane XVI-XVI
can be installed in front of it.
.
25
.
of Fig. XI;
.
Other
attendant
objects
and
purposes
of
the
25
Fig. xvn iss. side view- df this maid and as
present invention-which presents a number of
actuating mechanism;
l
'
special features of operation and of structure
. Figs. XVIII and XIX are respectively a sec
_ will be made apparent, to those skilled in this
art, by the following description of various alter
30 native exemplifications and embodiments of my
improved> combination of feeder and forming
mechanism, which are illustrated in the accom
panying drawings, in which:
35 plane passing through the two orifices of one of
,
„
,
Fig. II is a partial longitudinal central section
thereof, on the plane II-II of Fig. I;
,
t Fig. III is a plan view of this feeder construc
40
ion;
'
Figs. IV and V are vrespectively vertical section
and plan views of a modiñcation of part of the
structure oflFigs. I, l1 and III;
connection thereto;
Fig. XX is a plan view of. a device for unlock
ing the blow head whenv the blowing operation ,
is completed;
Fig. I is a transverse sectional elevation on the
my new feeders;
tional plan and elevation of a part of the pipe ‘
-
-
»
.
„
-
.
Fig. XXI is a fragmentary sectional view of one
of the parison molds and of the press plunger
cooperating therewith;
v
Fig. XXII is an enlarged vertical section, on ,
the plane XXII-_XXII of Figs. VIII and X,.of
a part of the neck ring actuating mechanism;
,
Fig. XXIII is another- enlarged vertical section 40
of the automatic valve control of the press cyl-4
inder;
'
‘ Figs. XXIV, XXV, XXVI and XXVII are dia-
Fig. VI is a small scale diagrammatic plan ' grams of lever and cam-track- elements which
45 view of a group of five dual orifice feeders, of the
K
form a part of the operative mechanism; _
' Fig. XXVIII is. a transverse cross section
form illustrated in Figs. I to V, and of .a corre
similar to Fig. I-through a second form of my
sponding number of my three table forming ma
l_
chines for each feeder, arranged in front of a new dual oriflce feeder;
Fig. XXIX'is a sectionaljpian view on the two
.round nosed tank;
~.
Fig. VII is a composite horizontal section - level plane XXIX-XXIX of Fig. XXVIII (with
50
through the forehearth of the feeder shown in a portion of one -of the press table decks broken
Fig. I (on the plane VII-,VII of that figure), and away to show a part of the neckring actuating
mechanism);
'v
.~
_
through a portion of the subjacent forming mech
v Fig. XXX is a partial plan, and composite sec
anism (on the planes VIIl of Fig; I, and VIII’ of
~ tional, view of the feeder shown in Fig. XXVIII,
"
55 Figs. VIII, IX, X and XII infra);
45
2
2,131,241
and of the forming mechanism used incombina
É tion therewith; the upper portion of this figure
showing .the horizontal relationship of the main
charges severed from the stream of molten glass
issuing therethrough and a blow or finishing
mold which receives the pressed blanks from the
elements of the assembly with a portion of the
upper deck of the blow mold table broken'away,
press molds andv in which the final shaping of
and thel lower left and-right hand portions show
ing the remaining parts of the blow mold table
the severing- mechanism and the molds of the
forming machine are all operated in synchronlsm
in section on-the respective planes a-a and b-b
with each other and are so timed that a mold
the blank is completed. The feeding apparatus,
of Fig. XXXI infra;
charge is delivered 'to the mold of one press
Fig. XXXI is a partial sectional plan view on ~ table While a charge in a mold of the other press 10
the two level plane c_c-c-c of Fig. XXXII;
table is being pressed into a blank and the
Fig. XXXII is a vèrtical. section on the plane pressed blank is delivered to a mold of the blow
XXXII-XXXI of Fig. XXX supra;
table at the same time that another charge is
Figs. XXXIII and XXXIV are side views of delivered to a mold of that press table.
15 parts of the construction illustrated in Figs. ,
Referring to the drawings in detail, in the em 15
XXVIII and XIQI;
bodiment of my invention illustrated in Figs. I
Fig. XXXV is a senil-diagrammatic plan view to XXVII, inclusive, the feeder comprises an I
10
of another group of forming machines, each one i shaped forehearth A, having a pair of delivery
of which is designed and adapted for use in - orifices F-F at the front end, over which a
20 combination with a dual or double orifice feeder pair of vertically reciprocable bells B_B are 20
of the character shown in Figs. XXVIII and
XXIX;
-
- Fig. XXXVI is an enlarged plan and compos
ite sectional view of a part of one of these form
25 ing machines, and upper left and right hand sec
tions being taken respectively on the planes d-d
and c_e of Figs. XXXVII and XLIII infra;`
Fig. XXXVII isa partial vertical section (simi
lar to that of Fig. VIH) on the plane:XXXVlI_
30 XXXVII of Figs. XXXV and XXXVI;
_
Fig. XXXVIII is a longitudinal sectional ele
vation on the plane XXXVIII_XXXVIII of Fig.
Fig.. XXXIX is a horizontal section on the
35 plane XIQClX-)QCXIX of Figs. XIQIVIII and
XL;
‘
‘
-
Fig. XL is a transverse sectional plan view on=
the plane XL-XL of li‘ig.'XXXIX;
Fig. XLI is a sectional plan view on the plane
40 XLI-)UJI of Figs. XXXVIII and XL;
Fig. XLII is'a vertical section on the plane
XLII-XLII of Fig. XXXVI;
Fig. XLlII is another vertical section on the
plane XLiIr-XLIII of Figs. XXXVI and XXXIX
,
,
45 (see also Fig. XLV infra) ;
Fig. XLIV is a front elevation of the pair of
blow molds at the center of Fig. XXXVI;
Fig. XLV is an enlarged horizontal section on
the plane XLV-XLV of Figs. XL and XLIII; and
Fig. XLVI is a vertical section on the plane
XLVI_XLVI of Fig. IQIXIX.
In general my improved apparatus for forming
- molten glass into individual mold charges and
then shaping those charges into finished articles
positioned that are adapted to be periodically,
but alternately, moved up and down to effect the
segregation and delivery of preformed mold
charges in alternate succession from the two
orifices. Each bell B_B is detachably secured 25
to the lower end of a hollow shaft I, which is
rotatably mounted in a ball bearing race 2, that
is carried on the outer end of a twinv arm radius
guide 3, and is partially counter-balanced by an
-adjustable tension spring 4. The upper portions 30
0f the hollow bell shafts I-I are encircled by
large spur gears 5_5 which are in engagement
with each other and which are driven by an
elongated pinion 6 that permits the gears to have
a considerable range of vertical movement on the 35
shafts I_I. The pinion 6 carries a bevel gear 1,
which is connected through miter gears 8_8, on
shaft 9, miter gears in_lli, on cross shaft Il,
miter gears I2, on vertical shaft I3 and worm -I4
with the drive shaft I5 of motor I6 (Fig. MII). 40
These gears 5_5 are not directly connected to
the bell shafts I_I , but are rotatably carried on
end thrust ball bearings I'I-I'I, which are sup
ported by pivoted levers I8-I8 that may be
rocked up or down on adjustable fulcrum pins 45
I9-I9 carried by pivoted bell cranks 2li-20, by
cams 2I-,2I on the cross shaft II shown at the
right of Figs. 1I and III. A hand operated turn
buckle 22 is connected to each of the bell cranks
20 so that the position of the fulcrum pins I9^_I9 50
may be readily varied independently of each
other. The upper ends of the bell supporting
shafts I-I carry large disc heads 23-23, which
are operatively connected thereto by splined
55. of commerce includes a forehearth structure
which is attached to the front end of a suitable
glass melting tank or furnace and having dual
or multiple orifices therein with means associated
jacent uppersurface of the corresponding spur
with each vorifice for establishing continuously
60 flowing streams of molten glass therethrough
gear 5_5, when the latter is lifted by the action
of the lever-cam elements 2I_I9_|8_I'I, pre 60
composed of a series of regularly -recurrent sec
ball and socket joints 24_24, and which are each 55
provided with three adjustable contact screws
25-25-25, that are adapted to engage the ad
tions of enlarged diameters connected together
viously mentioned'. 'I'he cams 2I_2I are so de
signed that the spur gears 5_5 are lifted alter
by sections of reduced diameters that are adapted
to be severed at these points of reduced diameters
nately into engagement with the corresponding
65 _into individual mold charges. The feeding
means are so arranged that an enlarged portion
of one 'stream is being formed while a portion of
reduced size is being formed inthe other stream,
and mechanism is provided for alternately sever
disc head 23 and when this engagement occurs
the bell shaft. support 23 is raised, and is con 65
currently rotated by ~the` continuously driven
pinion 6 which is .driven from the motor I6
through the gear train, above described; the
speed of rotation being determined in part by the
70 ing thesestreams into individual preshaped mold - viscosity of the glass in which the lower end of 70
charges which are delivered to a three table the bell is immersed and in part by the amount
forming machine where the charges-are shaped
to their ñnished form. 'I‘he forming machine is
composed of two press molds, one of which is
75 positioned under each orifice to receive the mold
of unbalanced weight which is supported by the »
lifted gear wheel 5. The range of upward move
ment of each bell is regulated and controlled by
the adjustment of the fulcrum pin support I9 for 75
3
8,181,841
lining lever la; _and the limit of downward
movement is ñxed by adjustable stop nuts 26-26
register with the groove 3|'.in the cup SII, until v
bell B and shaft I have been lifted to substan
ball bearings 2-2.
communicating opening between the main body
on the end of rods 21-21, which engage the lower tially the upper limit of their travel,I the vacuum
side of the radius-arm guides 3-3 for the' lower ` (when used) is not applied until the area of the
.
.
of glass in the forehearth and the interior of the '
The extreme upper'ends of each of the hollow
bell shafts I-I are covered by grooved cups
30-ll whose upper portions are connected to
pressure supply pipes II--IL and whose inter
mediate grooved portions 3l’ are connected to
vacuum conduits 321-32. -'Ll‘he closed end of‘each
bell is much greater than that of the delivery
orifice F; and under such circumstances the flow
of glass into the segregation chamber is much
more rapid than its outflow through the orifice 10
under the gravity head above it. There will,
cup 3U is provided with an adjustable check valve _ therefore, be a natural “necking” of .the outflow
ing stream during the period of unrestrained
gravity flow, but no retraction or interruption of
shaft I when- the latter is raised to a predeter
' 33, which seats on the end of the hollow bell
15 mined height and thus cuts o3 the connection
its continuous ñow.
or segregation chamber B; and »the sidewall of
this shaft is pierced with a row of narrow slots
34, which are so located that when the shaft-is
moved upward, a connection will be established
between the vacuum groove 34T in the cap and
_
_
a shear mechanism which is so designed as to op
erate alternately on the *two- streams from the
' dual orifice feeder. _ This shear mechanism com
the said chamber. Each -cup "-10 is carried by
prises two sh'ear blades ~lil-4I (Fig. _X), which
a U-shaped yoke 35-35, which is pivoted. at its
are mounted ' on two vertical coaxial shafts
rear end, on the frame of the feeder assembly
and is adjustably supported at its front end on a
vertical pin 3B; so as to vary the time and the
degree of .opening of the bell chamber to the
vacuum connection.
15
The' cutting off of each successively yformed
mold charge, at the proper time (preferably at
the points of natural “necking”), is effected by
between the pressure 'supply pipe 3| and the bell
'I'he cooperating adjust
‘2l-ß, that are rotated synchronously in oppo
site directions by a pair of opposed mitre gears
IL-M, one of which is secured to each of the
shafts 42--43` and an intermediate driving pin
ion 45. The axis of the shear blade shafts 42-43- ‘
ments of the range of upward movement of the
bell shaft I through the adjustment of fulcrum
is positioned midway'between the centers of the
two delivery ori?ces'F-F, and these shafts are
valve 33. and the height of the cap 30, permits of
the establishment of any desired _relationship be
tween the up and down movement of the bell and
the alternate opening and closing of the bell
chamber B to the pressure and vacuum line's
180 degrees to effect the severing operation
through a train of gears hereinafter described.
One-half lrevolution causes the oppositely moving
pins Il, the set position >of the pressure check . periodically and intermittently revolved through
3I-I2.
.
shear blades 40--4I to cross each other under the ’
center of one delivery oriñce-andthus sever'the
stream ñowing therefrom; and the succeeding
If the mold charges are relatively small in vol-- half revolution- causes the blades to out through
ume, and the depth of the glass in the forehearth >-the center of the stream iiowing from the other
is relatively large..the feeder may be operated delivery orifice. _At the time of each cut the
without the use of the vacuum connection; and shearblades Ill-4I are also moved downward,
in such a ca‘se the grooved portion ofthe bell at a speed greater than that of the flowing glass,
shaft cap 30 is open to the atmosphere.- But if so as'to prevent any retardation ‘of the flow, and
the mold charges are relatively large, or if the also accelerate the delivery of the severed charge
tothe receiving mold. The mechanism for im
bath of glass in the forehearth is relatively shal
low it is desirable to use a vacuum (of theproper
parting this downward movement to _the shear
degree) to expedite the recharging of the segre
gation'chamber at each upward movement of the
blades lll-4I will be more fully disclosed later in
connection with the description- of the forming ~
bell B; and in order to reduce the time ofsuch
recharging to a minimum (and thus increase the
speed of the operation) I _preferably use a low
mechanism.
sub-atmospheric pressure (i. e., a high vacuum) ,
A'
Y '
I
_
Forming mechanism
.
The mechanism for shaping the mold charges
and prevent any overcharging action by the pro-- into articles comprises two press mold tables R vision of a hollow ball iioat valve 38, made of and L positioned symmetrically on the >two sides
of the forehearth A; and a single blow mold
nichrome, stainless-steel, or other suitable .mate
rial, not injuriously affected by contact with .table M positioned directly in front and ,be
molten glass, which floats upwardly as the level ' tween the axes of the two press tables. Each of
of *glass 'rises in the segregation chamber, and the press tables R and L carries ñve equally
closes communication between that chamber and spaced parison -or blank molds P, and these
the hollow shaft I, thereby preventing the glass tablesare alternately moved in opposite> direc
tions „through one-,fifth of a revolution, by means
from being
‘.
It will be observed that the external force, to of Geneva Wheels 50-50 each having five slots
which the glass is subjected during the acceler `5I therein (see upper part of Fig. XI) and the
interval of rest of each wheel is 0.7- and .the
ated delivery period-while the glass is being> ex
-pelled from the delivery orifice under> the joint interval of action is 0.3 -of each revolution of'
its driving pin 52 which is mounted on the-face
action of gravity and of super-atmospheric_ pres
sure-is not released or relieved, that is`, the „_valve of a driven gear 53. The blow mold table M
Il does not seat over the upper end of the hol--` carries sixteen, equally yspaced blow molds S
low shaft- I until the bell has been raised to a (see ~Fig. VI) and is‘periodically -moved through
degrees by'a Geneva wheel‘iil having six 70
70 substantial height sufficient to establish a free ` 22.5
open communication between the interior of the teen -external slots 55 -therein (see Fig. XI),
bell B and the surrounding forehearth, and as a whose interval of rest is 0.5625, and whose in» "
result, any retractive action on the outiiowing - terval of action is 0.4375 of each rotation of
glass-due to the upward movement- of the bell
75 is eliminated. Further, since the slots ll do not
its actuating crank pin 56, which is-secured to
one end'of a vertical shaft 51 having a~ worm
76
4
_
2,131,241
gear 58 keyed to its opposite end. These three
Geneva movements 50-50-54 are synchro
nously driven by a single shaft 59, which extends
longitudinally of the machine, and has worms
Gil-'6| ,secured thereto which mesh with the
gears 53-53 and 58,_ respectively. This shaft
59 also serves to operate the shear blades 40-4I
through a Geneva wheel 63 having three ex
ternal slots 64, which is secured to a vertical
10 shaft 65 having universal joints 66 therein, and
which is geared to a shaft 69 carrying the driv
ing pinion 45 by the bevel gear and pinion
61-68. The shaft 69 is journaled in a pivoted
frame 10 that supports the blade carrying shafts
15 42-43 and a down movement is imparted to
the shear blades during the severing operation
by a cam 1| secured to the outer end of the
shaft 69, which bears against a roller 1|“ that
is carried by the main frame of the machine.
A spring 12 normally resists such movement
(see right hand end of Figs. X and XI). The
interval of action of the Geneva wheel 63 is
only one-sixth, and its interval of rest is five
sixths of the period of revolution of its driving
leave the latter free to rotate through one
sixteenth of a revolution, at the end of which
the table is brought to` rest by the Geneva
movement and again locked in position; the
auxiliary cylinder valve 94 being concurrently
or subsequently closed to allow the compressed
fluid to escape from the said cylinder 85, and
the piston element 36 thereof to be retracted to
its initial position by the return spring 99 on
the drum strap 81.
10
Each of the parison or blank molds P of the
press tables' R-L comprises the usual divided
bottom section |0| and the divided top section
|02 which are journaled on a common vertical
shaft ||3. The lower bottom sections and the 15
top neck ring sections are operated independ
ently of each other in the usual manner, the
bottom sections |0| being operated byA twin ,
crank arm elements |03--|04 which are con- .
nected to the separable lower sections of each
parison mold and extend outwardly from co
axial shafts |05-|06 which are concurrently
revolved .in opposite directions by opposed bevel
pinions |01--| 08 and intermediate bevel gear
|09. Thel bevel gear |09 is rotated alternately
crank 15 which is secured to a vertical shaft 16
that is geared to the drive shaft 53 by the worm y in a clockwise and counterclockwise direction
and gear elements 11-18--19-80. The cen
(as viewed in Fig. X) to close and open the two
tral driving shaft 59 is preferably rotated at a halves of the mold |0| by a cam roller ||0
high speed by means of the variable speed motor which is carried by the gear |09 and engages a
I6, which is located at one side of the machine track element ||| shown in Figs. VII, XI (left 30
and is coupled to a sprocket and wheel 8| on hand portion X and XXVI). One part of
said~shaft by a silent chain drive 82 (see Fig. each of the divided top ring sections `| 02 of
XIII); and the .crank pin elements 52-52
each of the parison molds P is keyed to the
56-15 of the several -Geneva movements shaft ||3 while the other is loosely journaled
50-50-54 and 63 are operatively connected thereon and both sections are coupled together
with.this shaft (through the gearing hereto
through the gear segments ||4-||4 (Figs. IX,
fore described) in such manner that the ele
X, and XI) so that when one section of the
ments 56-15 which move the blow mold table mold is turned in> one direction the other
M and the shear blades 40-4I revolve at twice section will turn simultaneously in the oppo40 the speed of the elements 52--52 which operate site direction. The neck ring molds are opened
the two press mold tables R. and L.
by a vertical plunger mechanism ||5 which is
In order to relieve or reduce the work _which periodically brought into engagement with and
is imposed on the Geneva movement 54 that rotates the shaft |I3. The plunger- mechanism
operates the large and heavy blow mold assem . (Fig. XXII) comprises a cylinder ||6 contain
45 bly M, I provide an auxiliary pneumatically op
ing a pair of male and female piston elements
erated mechanism ' which is automatically
||1.-||8 which are interconnected by multiple
brought into action at the instant when this screw threads | I9 of relatively -high pitch.
assembly begins 'to move, and which supplies When pressure is admitted to the upper end
the major portion of the power required to of this cylinder, the pair of interconnected pis
effect this movement. This auxiliary mech
tons ||1---| I8 are moved downwardly as a unit
anism comprises a pressure cylinder 85 whose until the socket end of the female member ||8
piston rod 86 is connected to a flexible strap 81 is moved into engagement with the head of
that engages and partially encircles a revolv
one of the neck ring shafts | I3 and the' shoulder
able drum 88, which is in turn coupled to a
||8' comes in contact with the lower end of
55 vertical driving shaft 89, by one way pawl and the enclosing cylinder ||6. The male piston
ratchet wheel elements 90-9i; and a driving member ||1 then moves downwardly relative to
pinion 92 on the upper end of said shaft which the member ||8 and vcauses the latter member to
engages with an internal gear 93 on the blow rotate and turn the shaft ||3. ~Since the di
mold table M (see Figs. X, XIII and XIV). A vided neck ring sections are geared together
suitable fluid under pressure (e. g., compressed through the segments ||4-~||4 and since one
air) is admitted to the auxiliary cylinder 85 of these sections iskeyed to the shaft ||3, it is
by means of a valve 94 that is actuated by a~ apparentthat on rotation of the shaft by the
cam 95 on the lower end of the Geneva crank mechanism ||5 the neck sections |02 will be
shaft 61, at the instant when the crank pin 56 opened. When the motive fluid is exhausted
enters one of the slots 55 onz‘the blow mold table from the cylinder I|6 the parts ||1--||8 are
M; and the resultant movement of the auxiliary returned to their initial positions by springs |20
piston member 86 rotates the table in the re
within the cylinder || 6. ‘
_
quired direction at a> speed which is controlled
The neck ring sections |02 »are closed simul
by the Geneva movement 54 itself. 'I'he valve taneously with the bottom body section 10| of
70 actuating cam 95 also serves to withdraw a ver
tically movable locking pin 96 normally pressed
upwardly by spring 91 into engagement with
the blow mold table M, (see Figs. XIII and
XIV), by depressing a pivoted lever.98, which
75 is attached to the lower end of the pin 96, and
~
40
45
50
55
60
65
the parison molds by the engagement of the 70
upper ends of the body sections of each parison
mold with a depending flange |02a..on thebot'
tom of each neck ring section. The flanges
| 02a extend into the mold cavity formed be
tween sections |0|, and each )is provided with 75
` 5
2,131,241
a beveled face |02b which is engaged by a cor
responding beveled face |0|a on the inner face
of each of the lower sections |0|. Consequently,
the lower sections and neck ring sections of
each parison mold are closed simultaneously
by the mechanism closing the lower sections but
are opened at different times through the mech
anism heretofore described.
-
-The separable halves of each blow mold are
operated by a mechanism which is, in all essen
tial respects, the same as that employed in op
erating the lower sections I0| of the parison
mold P with one section ofv each blow 'mold
connected to the crank arm |25 on a shaft |26,
while the other section is linked to the crank
one arm of which is connected to the upper mein--l
ber |53 of the head, and the other arm of which
carries a roller |6| that is adapted to be engaged
and the bell crank |60 turned to dead center by
the adjacent end of a horizontally reciprocable
plunger |62, which is'mounted in a cylinder |03.
This plunger |62 is moved outwardly-_to- rock the
bell crank lever |60 downwardly and thus lower
the blow head |50-by admitting compressed air
to the rear end of the cylinder |63, and is moved
back,»when the airpressure is released, by means f
of a‘return spring |66. There are two of these
plunger mechanisms |62--|63, which are sym
metrically positioned on each side of the center'`
line of the forming machine,l and which are
arms |21 on a shaft |20 coaxial with the shaft
-adapted to operate alternately in closing and
|26; This mechanism, which is operated to
close the blow mold sections when the support
molds S as soon as the latter have received the`
ing table M is at rest, is actuated by means of a
vertically movable plunger |30 which, when
lifted, engages a roller |3| on an intermediate
bevel gear |32 disposed between bevel pinions
|33--|34 on the shafts |26--|26, and thus
rotates the latter through the required angle (see
Figs. m1 and XIV). There are two of the‘se
actuating plungers |30, located at the right and
locking down the blow heads |50 on the blow
pressed parison blanks from one or the other of
the press mold tables R-L; and this closure is 20
also effected when the blow mold table >is at rest.
The blow heads |50 are unlocked and raised,
when the blow mold table is in movement by a
rocking sector cam |65 (see Figs. >XV’ and XX),
which engages with the roller |6| at the upper 25
end of the bell crank lever |60-and moves ‘the
left hand sides of the machine (see Fig. XIII) in
such position as to respectively close- the then
stationary blow molds at the points where they
stop to receive the pressed parisons from the two
blank mold tables R--L (see Fig. VI). The
plungers |30 which are mounted in cylinders |36
are raised by the admission of motive iluid (e. g.,
compressed air) to the bottom of the cylinder in
latter out of its dead center locked position (and
which they work; this admission, and subsequent
exhaust. being controlled by two way poppet
>A characterizing feature of the blow head il
lustrated in Fig. XVI is that it provides for a
circulation within the mold cavity during the
valves |31 that are actuated by> cams |30 on the
lower face of the worm wheel 53-53 that form
a part of the Geneva movements, of the two press
40 mold tables R-L. The blow molds are opened,
while the supporting table therefor is in move
ment, by the engagement of the lifted gear rollers
|3| with the under side of an inclined track |60
positioned just in advance of the discharge _sta
45 tion for the finished articles (see Figs. VI, XIV
' and XV).
Each blow mold S is provided with its own blow
head |50, which is mounted on a vertically swing
ing pipe arm |5| that also serves to supply the
blowing air vfrom the central distributing head
50
|52 around which the blow mold table M revolves.
These blow heads |50, which are adapted .to be
moved vertically into sealing and unsealing posi
tion with the mold S, comprise two relatively
55 movable members |53--|54 which are connected
by a ñexible Sylphon bellows |55 (see Fig. XVI) ;
and the upper member |53, which is rigidly se
cured to the. swinging pipe support |5|, is pro
vided with two downwardly projecting arms
60 |56--»| 56 that carry adjustable contact screws |51,
which are adapted to tightly engage >’the opposite
sides of’4 the closed mold sections S when the head
|50 is. moved downwardly and lock the parts to
gether during the blowing operation. The lower
member |54 which first engages the top of the
blow mold S when the blow head |50 is moved
down, is provided with a tubular extension |56,
simultaneously disengages the arms |56 on the
blow head V |50 from the sides-of the, blow mold
S), just before the blow molds S are opened to 30
discharge the finished product from -the machine.
Compression springs
|66 disposed below ' the
swinging arms |5| also assist in raising the blow
heads
|50.
'
f
blowing operation'. In order to accomplish this,
the member |56 is provided with one or more.
vents |54', which are continuously open, but are 40
of such aggregate area that an adequate blowing
pressure will be maintained within the blow cav
ity during the periods that the valve |59 is open. ,
Each of the press mold table assemblies R-L is
provided with a suitable pressing mechanism |10, 45
_for forming the parison blanks, which is posi
tioned in line with the axis of the mold P at the
first of the ñve successive stations which it oc
cupies in each complete revolution of the table
(Figs'. VIH-XXI). In the construction here 50
shown each pressing mechanism |10 comprises
both an upper and a lower cylinder-piston assem
bly |1|-|12 and |13---|14. The lower piston rod
|16 is provided with a forked head |15, which,
when raised, engages both the bottom and the 55
sides of the parison mold sections |0|, and not
only locks them together, while the upper press
plunger |12 is acting on the glass, but also re
lieves any downward strain on the supports for
the moldl during this operation. In order to en 60
sure a close engagement between the arms of the
head |15 and the mold sections I provide each
arm with'an adjustable contact arm |51' and
thus provide effective locking means which nosi
tively hold the molds closed during periods of 65
» maximum strain.
The press plunger |12 is provided with the usual
whose lower end is normally closed .by a check ‘ spring controlled neck ring sleeve |16-|11 which
valve |59 that is carried by the upper member
confines `the glass in the mold and forms the
upper edge of the pressed parison blank.
- 70
70 |53 and is unseated-to admit air from the swing- ,
In-order to admit motive fluid at the proper
ing pipe connectlonm|5| -to the interior of the
intervals to the cylinders |1|-|13 of the two
pressing mechanisms, I provide a pair of double
two way “timer valves” VIS-|80, which
effect this downward movement of the blow heads , acting
are
operated,
in the proper sequence, by' a set 75
75 |50 I provide a bellcrank- link mechanism |60,
pressed blank-when the blow head- |50 has been
forced down to its locked position. In order'to
6
of cams Isl-|82 mounted on a shaft las that is
"revolved, at the same speed as the worm-wheel
|62 of these two connected'cylinders are re
crank-pin-shafts 60-53-52 of the Geneva drive ’ turned to their initial positions by the springs
wheels 50 for the press mold tables R-L, i. e.,
at one-half the speed of the Geneva crank arms
56 and 15 for the blow mold table M and the
shear blades (see Figs. X and in), from the shaft
16 operating the shear mechanism through the
gears N14-|85. One ofthe delivery outlets of
10 each of these “timer valves” |19-| 80 is directly
connected to a passageway |86 leading the lower
end of one of the mold supporting cylinders |13,
and-the other is connected to a connected sys
tem of passageways |81 in the tubular posts and
15' cross arms |68--|69 which serve as a support for
the adjacent press tables R-L and press cylin
der |1|---|13 (see Fig. VIII). When motive iiuid
is admitted to the ñrst mentioned connection,
i. e., passageway |66, it raises the mold support
20 ing piston |14, and as this moves upwardly, it
uncovers a side port |90 in the cylinder |13, which
is in communication with the upper end of the
associated pressing` cylinder |1| (through the pip
ing | 9 |Í`and a two way spring pressed check valve
25 |92 shown in Figs. VIII and XXIII). 'I‘he ilow
of motive ñuid entering the piping |9| through
this side port |90 raises this check valve |92 and
forces the upper press plunger |12 and neck ring
collar |11 down into the parison mold, which is
30 now supported and locked in position by the- lift
ing of -the lower plunger |14 to the top of its
cylinder |13. When either the timer valves
' |19-|80 for each press assembly is moved to the
other end of its stroke, the‘connection to the
35 lower end of the hollow cylinder |13 is opened
to the atmosphere; and the resultant drop of
pressure therein permits the spring pressed check
valve |92 (Fig. XXIII)
also open the top of the
40 outer air. At the same
mitted to the system of
to the bottom and top
to move downward and
press cylinder |1| to the
time motive fluid is ad
pasasgeways |61 >leading
of the upper and 'lower
cylinders |1|-|13 thereby positively returning
the opposed plungers |12-|14 to their initial po
45 sition, and leaving the associated press mold table
R-L free to be moved through another step.
|20--|64 already described.
Cycle of operation>
The continuous or continued cycle of opera-l
tion of the combined feeding and forming mech
anism is as follows: As soon as one mold charge
has been cut oil' and delivered to the mold be
neath it-say on the right hand press table R (see
Fig. I)--the supporting press table is set in
movement to advance the molds thereon by one
ñfth of a revolution. This carries the last filled
mold under the press plunger |12 and the corre
sponding timer valve |19 is moved to operate this
press mechanism (see Figs. VIII and Xin) . The
previously filled mold P containing a freshly
pressed parison blank, is concurrently lmoved
away from pressing position and the lower sec
tions |0| of this mold are partilaly opened (see
Figs. VI-A and VII) . The mold next in advance
is also moved another step Without any further
change. The second mold in advance is carried
to the transfer position, and during this move- '
ment the cam track ||| is so shaped that the
lower sections |0| thereof are fully opened, while
the still closed neck ring |02 (which supports
the pressed parison blank) is brought into regis
try with ,the axis of an opened blow mold S which
has already been moved into this transfer posi
tion (see infra) and is now at rest (see Fig.
VI--A and Fig. VII). The valve |31 controlling
the admission 'of motive fluid to the lower end
of the cylinder |36 is then opened, which causes
the plunger |30 to be moved upwardly and close
the sections of the blow mold S on the suspended
parison blank through the associated gears |32
|33---|34. The`controlvalve |91 is then actuated
and motive fluid is delivered to the mechanism
||5 which opens the sections of the neck ring
and releases the `suspended parison blank (see
Fig. VI-B), The movement of the neck ring
actuating pistons | |1-| I6, admits motive ñuid to
the blow head cylinder |63 and moves the plung
er |62 against the roller | 6| on the crank arm
'I'he timer cam shaft |63 through the cams - |60 forcing the blow head |50 down into locked
|95---|96 also serves to actuate a pair of single
acting two way valves |91-|98 which control
the ñow of motive fluid through pipes |99 lead
to -ing to the upper ends of the
position on the mold beneath (see Figs. XI, XVI
and XVII.) . The blow mold table is then started
and moves through one stem. This carries the
operating cylinders mold which has just received the parison blank
||6 for the neck ring elements |02 of the press from the press mold table R (which is now beingmold assemblies R-L. When one of these valves blown to form) to an intermediate position be
|91-_|98 is moved to open the associated cylin
tween the transfer stations of the R and L tables,
der ||6 to the source of pressure, the male and and the still opened and unfilled blow mold Just
female piston members ||1---| I6 thereof are suc
in advance to the L transfer position (see Fig.
cessively actuated, as already described, to open VI-C).` While this blow mold table movement
the neck ring elements |02 of the mold at one is taking place the left hand press mold table
or the other of the two transfer positions and L also begins to move and at the end of this
00 thus release the pressed parison blank thereat. _last mentioned movement the units of the press
As the top piston ||1 moves downward it opens mold assembly L have been brought to the same
a port 200 inthe side of the cylinder ||6, which relative positions as those occupied by the units
-is connected through the pipe 20| to the inner of the press table R, atîthe corresponding step
end of the cylinder` |63 that operates the blowing in the cycle (see Fig. VI'-C). The successive
head |50. The pipe 20| is connected to the cyl
series of >actions of closing the blow- mold sections,
inder |63 through a check valve like that shown of opening the neck ring sections, and of closing
in Fig. XXIII, and when motive ñuid is intro
down the blow head, are now repeated at the
duced into the pipe 20|, the blow head |50 is transfer station of the mold table L in the same
forced down and locked on the top of the blow sequence and order as they are performed at
70 mold sections which have just been closed on the the right hand transfer station; and the blow 70
released parison blank (as previously described). mold table M is then moved -through another
When the timer'valve |91-|96 is moved to open 221/2 degree interval. -Just after this movement
the neck ring cylinder ||6 to_ the atmosphere, starts (see Fig. VI---D) the press mold table
the release of pressure thereon `concurrently R is again set in motion, and the two tables R
opens the check valve on the associated blow and M continue to move concurrently for a part 75
'
7.
8,131,941
At 1.80 seconds
of the blow mold table movement (ne mg.
Neck ring sections on press
,
- vL-E) ; but the movement ofthe blow mold table
M is completed before that -of the press mold
table L opened
Blow head Ill'at transfer sta-ï`
'tion of press table L lowered
At 1.90seconds
Blow mold table M again in
At 2.0 seconds
R press mold 'table starts to
table R. At the end of the latter movement all
of the mold units on all of the tables R-L and -
M have again assumed the relative positions
ñrst described and one complete cycle of opera
tions have been completed.
ì
and locked
motion
.
'
'
'
'
v
_
'
move. Cycle completed.
The relative angular positions of the elements
of the two Geneva. mechanisms ll-II which con
trol the alternate movements of the ltwo press
mold tables R-L are so adjusted that these
.
At 1.90 seconds
The above outlined time Vintervals can, of
10
course, be varied to some considerable extent in
accordance with the size and the character of the
articles being produced; it being only necessary
movements occur at equally spaced intervah. and
in such relation to the feeding and severing op
as soon as a mold charge has been delivered to
to so time the blow table movements as to carry
the filled blow mold at the transfer station of
the press mold L out of the way of the advanc
one of the molds which it carries. 'I‘he desired
ing neck ring and suspended parison on the pressv
s'ynchronism of the severing action is obtained
table
erations that veach >press table begins to move
by driving all of the Geneva movementsil-ll
L.
.
‘
.
`
,
'
'
y
It"will be apparent to those skilled in the art
that various structural changes may also be
made»in different parts of the previously de»v
20 5&-63 (for the tables R-L and M and the shear
' blade mechanism ll-ll) from a common- drive
shaft 59, and the synchronism between these . ` scribed combinations without altering its funda'
movements'and those of the reciprocating bells
mental characteristics of operation. One suchr>
exemplarychange is shown in Figs. IV. and V
vwhich illustrate another way of eñecting' the
periodic up and down- movement of _the feeder
bells. In this alternative .construction each of
B-B of the feeder is secured by gearing the
25 ,shaft l5 of the driving motor l0 to the system
of vertical and horizontal shafts I3, || and 0 that
control the lifting, lowering and rotative move
ments of the bell shaft elements (see Figs. I. II,
III and XIII).
v
i
’
the large gear wheels !’--5' is provided, on its
under face, .with a surface cam track a-a. that
The order and time sequence of the coopera
isengaged by two oppositely disposed >cam rollers
tive successive actions and eñects of the com
bination of feeder and forming machine opera
b-b which are mounted on the heads of .thread
ed and splined standards o-.-c, and which may
tions can be more fully understood by consider
be simultaneously raised or lowered by a pairv
ing aspeoiiic case in which the apparatus is ' of worm'wheel'nuts d-d and worms e-e that
35 adjusted to produce sixty finished articles per
yminute. In that case each'of _the twin feeder
are concurrently moved by a suitable hand wheel
f, or othersuitable means (see Fig. V) to vary
mechanisms will deliver thirtylmold chargesper - the maximum lift of the feeder bell B--B.
'
minute-or one every two seconds-and the time
The construction illustrated in Figs. I to'
relation of the successive table and transfer- XXXVI presents a number of novel and useful
40
movements will-when vthe parts are arranged -features, which are not themselves directly in
volved in carrying out the ,hereinbefore de
scribed mode of operation, but which contribute
vas shown in Figs. I> to XXVI-be as follows:
At 0.0 second
Charge delivered to moldy on
press table R (F18. I)
Press table R begins to move
At 0.0 second
(blow table M already mov
45
ing)
At 0.3375 second Blow mold table M movement
completed
50
Press mold table R, movement
At 0.60 second
completed
.
Blow mold at transfer station
_' of mold table ‘R closed on
At 0.70 second
parison blank
Press plungers on press mold
table R in action to release
neck ring sections |02
Neck ring sections |02 on press
At _cao second
60
’
mold table R opened
Blow head |50 at transfer sta
At 0.90 second
l .
tion locked down
At 0.90 second
Blow mold- table M starts to
At 1.00 second
Charge delivered to mold on
move
_
press table L and this table
begins to move
At 1.3375 seconds Blow mold table M movement
-completed
At 1.60 seconds
Press mold table L movement
completed
At 1.70 seconds _
76
`
Blow mold S at transfer sta
tion of mold L closed
Press plungers on-press table L
in action ‘to open neck ring
section |02
to the effectiveness of the results obtained there
by. Since a considerable part of the three
table-forming mechanism is located in close
proximity to the feeder forehearth it is desirable
to protect it as completely as possible from radi
ant heat. In order to accomplish this result I
completely enclose the sides and bottom of the
forehearth A in a metal box 2||| that‘is con
structed from sheets of stainless steel or nichrome
alloy which have a relatively low coeillcie'nt of _
heat conductivity, and which are also highly
polished on both their interior and exterior sur
faces. I also provide means for preventing all
escape of hot gases of combustion through the -
roof of the forehearth by covering the major por
tion of it with another metal plate 2| |, which is
provided with raised flanges 2|2 that form an
' nular pockets 2|3 around the openings through
which the upper‘ends of the feeder, bells B-B
and of the baille gate block 2|! project; attach
ing to the supporting heads of these .members
B-B and 2M are downwardly extending sheet
metal skirts 2|5, that enter the said pockets 2|); 85
which are filled with a _suitable fusible metal
such as a lead, zinc, or cadmium alloy-._that be
comes liquid at the normal temperature of the
forehearth roof blocks. Combustion gases are
vented from the forehearth back into the furnace 70
proper, and for this purpose the block 200 is
provided with the opening 260' located above the
glass level, and thus performs the function of a
skimmer block yand a vent. The block 260 may
also be lowered tol cut on the flow of glass from
8
2,131,241
the furnace to the forehearth, and the opening
machine may be run back from its normal op
260' is so located as to be well abovethe glass
level even when the block is in its lowermost
adjustments on either the feeder or the forming
position.
The various moving parts of the combined
feeder and forming mechanism, which has been
thus far described, are operated in part me
chemically and in part pneumatically. The mo
tive fluid for actuating the pneumatically oper
erating position without disturbing any of the
machine parts of the combination.
The possibility of substantially varying the me
chanicalstructure of‘my improved combination
Without _altering its distinctive character is fur
ther exemplified by another embodiment of my
invention which is illustrated in Figs. IQIVII to
XXXIV, inclusive. In this embodiment, the 10
etc-may be supplied from any suitable source; feeder unit is of the reciprocating bell plunger
but in order to make each machine a self con
type-as contrasted with the reciprocated bell
tained entity, I prefer to provide _it with a‘, two air pressure type of Fig. I-and comprises two
stage air compressor unit which is located in »vertically reciprocable bells B' and B' that are
15 the base of the machine frame (see Figs. IX, positioned over a pair of twin or dual orifices 15
XII and XIII), and which’comprises a set of F’-F' in the forehcarth A’ and plungers G-G
low pressure cylinders 22|-that supply the air that are vertically reciprocable' within the bells
for operating the auxiliary power movement of B'-B’. Each bell and plunger unit B’-G and
the blow mold table M, for blowing the blanks, B’-G is adapted to be periodically, but alter
20 and for expelling the glass from the feeder bells
nately, moved up and down to effect the segre 20
and a set of high pressure (second stage) cylin
gation and .delivery of preformed mold charges ’
ders 222 that furnish the air for pressing the in alternate succession through the orifices
10 ated elements-as well as for blowing the blanks
" . blanks, for closing the blow molds S, for opening
the neck ring sections |02 of the press molds
R-L, and for locking down the blow heads |50.
The air compressor unit is driven from the cen
tral longitudinal shaft 59 of the machine, which
is connected to the crank shaft 223 carryingvthe
pistons 224-225 through the gears 226-221.
30 The air fromy the compressors 22|-222 passes
through passageways 240 (one of which is shown
in Fig. IX) in the cylinder block and communi
cating passageways 24| in the frame of the ma
chine and is stored in suitable tanks 228`and 229,
one of which (229) constitutes the receiver be
tween'the two stages of the compressor and also
a source of low pressure compressed air. Each
stage of the compressor is in eifect a high speed
pump and accomplishes adiabatic compression of
40 the air, and the arrangement is such that the
air from the high pressure stage is utilized at
substantially the temperature of compression.
This compressor unit (cylinders 22|-222, pis
tons 224-225, and crank shaft 223) is so con
45 structed that it may be readily removed from
below (see Fig. IX) without disturbing any of
the other parts, and without even disconnecting
any pipes by merely removing the bolts 242-242.
The entire forming machine structure-Which
50 in this case also carries the double acting shear
blade mechanism 40-4I-is mounted on track
wheels 230-so that it may be readily rolled away
from the forehearth A and over a floor pit, for
the purpose of removing the bolts 242 and the
-55 compressor unit, or for other purposes.
But in
F'-F'.
'-
'
Each of the bells B'-B' is detachably secured
to the lower ends of a sleeve 300 rotatably mount
ed in a ball race 304 carried by the crosshead
305 and has an external gear 30| thereon which
meshes with the corresponding gear 30| on the
other sleeve and with an elongated pinion 302
which ls secured to a driven shaft 303. Each of 30
the sleeves 300-300 is detachably secured to a
collar 306 which is carried on the outer end of
a pivoted forked arm 301 that is periodically
rocked up and -down to raise and lower the bell
B'by a cam 308 on a cam shaft 309 that engages 35
a. r'oller 3||| carried on the upper end of a
weighted arm 3|| that is attached to the inner
end of an -arm 391 (Fig. XXXIII).
'I'he upper ends of the plungers G-G are de
tachably secured to hollow shafts 3|2-3l2 which 40
extend through open ended cylinders 3|3-3|3
carriedl by the crosshead 3|4 and each' shaft has'
a piston. sleeve 3|5 mounted thereon which is
moved up and down in its respective cylinder 3 | 3,
to raiseand lower the plunger. by suitable motive
ñuid.'V such as compressed air, delivered alter
nately to the- opposite ends of the cylinder 3|3
through pipes 3|6-3I1 that are connected to the
sourcel of compressed air through a timer valve
3|8. The timer valves 3|8-3I8 are periodically 50
actuated to alternately connect the opposite ends
of the cylinders 3|3-3I3 to motive fluid by cams
3|9-3I9 on the cam shaft 309 which is connected
by miter gears S20-320 to a. vertical shaft 32|
that, in turn isgeared to the motor shaft 32|a 55
of a continuously driven variable speed motor
32 Ib. The shaft 303 for rotating the bells B’-B'
is also driven from the cam shaft 309 through
the gear. and shaft elements 322-323--324
order that this may bedone the two upper press
cylinders |1|-|1| must be moved apart to clear
the widened front end of the forehearth; and to
facilitate this movement the arms |89 supporting
60 these cylinders are revolvably mounted cn the
325-326.
standards |88 about which the press mold ta
In order to’control and adjust the up and down
bles R-L revolve. By uncoupling the pipe con
stroke of the plungers G-G, the open ends of
nection that leads from the lower to the upper each of the cylinders 3|3-3I3 are closed by
cylinder |13-|1| and slacking back on the sock
sleeve nuts 321-321 which are threaded into the
65 et engaging set screws 23| which lock the upper' ends of the cylinder and are operatively con
cylinder head |1| to an upper cross bar 232, the nected to two co-axially mounted rotatable shafts
press cylinders may be swung outwardly a suf
328 and 329 through the sprocket wheel and
ficient distance to pass the front end of the fore l chain elements 330-33I-332 (upper sleeve nut)
hearth. It is then only necessary to disconnect and the gear, pinion, sprocket wheel and chain
the coupling 233 in the vertical shaft | 3 which elements 333-334, 335-336 and 331’. From this
transmits motion to the bell operating mecha
arrangement, it is apparent that each of the
nism (see Fig. I); and uncouple the pipe 3|
sleeve nuts 321-321 closing the ends of each
which leads from the top of the blow table stand
of the cylinders 3|3-3I3 is independently movard |52 to the caps 30-30 on the upper ends of
able into and out of their respective cylinders
75 the bell shafts |-|; after which the forming ’ and as a result, the stroke of the pistons 3|5 and
65
70
'
75
9.
2,131,241
consequently the movement of the plungers G-G
may be readily and independently varied and ad
justed to control the shape and size of the pre
tive fluid. 'I‘he press tables are each rotated'
formed mold charges.
four slot Geneva wheel 350 whose period of ac- '
To assist the plungers G-G in expelling` the
molten glass segregated in the bells B'-B'
through the orifices F'-F’, on the down strokes
duced into hollow- members 340-340 which are
formed integrally with the piston sleeves 3|5-3 I 5
and communicate with the interior of the shafts
3| 2-3|2 and from which it is delivered to the
interior of the bells B’-B’.l The compressed air
tion is 0.25 and whose period ofrest is 0.75 of
the time of revolution of its driving crank pin
35| (see Fig. XXXI). These crankpins 35|-35l
are carried by worm wheels 352-352 that are
moved in unison by a single Worm 353 on the
central longitudinal driving shaft 354 (also as 10
in Fig. IX, etc.) that is connected by a- silent
chain to the variable speed motor 32|b placed at
one side of the forming machine (see Fig. .XXX
is introduced into the members 340-340 through
and compare with Fig. XIII);
thereof, compressed air is~ simultaneously intro
346-346 that _also serve as conduits for the mo- '
step by step through 90 degree intervals by a
-
.
'I'he blow mold table M' carries fourteen molds 15
the pipes 34 |-34| which are connected to a suit
able source of such air, at the proper time in S’ which are spaced at 25.174-degree intervals
the down strokes of the plungers G-G, by`cams ‘ and is moved,.step by~ step, through this interval
342-342 on the cam shaft 309 which actuates a ' to carry the molds S’ to thetransfer position
timer valve 343 positioned in the compressed air `by a fourteen slot' internal Geneva wheel'356
whose period of action is 0.5714, and whose pe-_f 20
lines 34l-34l.
The cams 308-308 controlling the raising and riod of rest is 0.4286-of the time of one rev
lowering of each of the air bells B'-B' are so olution of its driving _crank pin 351 which is car
arranged on the cam shaft 309 with respect to ried by a vertical shaft 350 that is driven from
the cams 3|9-3l9 controlling the _operation of the shaft 354 through a worm wheel 359 and
the plungers G-G that each bell will be moved
upwardly before the plunger whereby a flow of
glass is established from the forehearth A'
through' the orifice F' prior to the upward move-`
worm (not shown) at the outer end of the c‘en
tral drive shaft 354. This movement of the Ge
neva wheel 356 is assisted by a. pneumatically
ment of the plunger and as a result,- there is no
ner and with substantially the same elements or
retardation or'retraction of the flow through the
orifice at the beginning of the up stroke of the
partsl illustrated by` Figs. XIII-XIV for rassist
plunger, but there is a diminution and a natural
necking in the stream as a result of this decel
fil
operated' piston in substantially the same man
ing the rotation lof the blow mold M in the ñrst
embodiment of my invention. Here, as before,
the piston which is mounted in thelcylinder 360
erated ñow under the influence of gravity alone.. is flexibly connected to a driven drum that is coupled, by a one-way pawl and vratchet drive(not shown) , to a pinion 33| which engages an
are produced, each of which is composed of 'a
series of regularly recurrent sections of enlarged » internal gear indicated at 362 on the blow moldV
table M' (Fig. XXX). The admission of motive
diameters connected together by portions of re
duced diameters, and since each bell and plunger fluid to the piston cylinder 360 is controlled by
Thus, two continuously flowing streams of glass
unit is working alternately with respect to each
other, the enlarged portions of one stream are
formed, while natural necking- is taking place
in the other stream, and these streams are adapt
ed to be alternately severed, at the points of
Ul reduced diameters, into successive and ,preformed
mold charges that are delivered alternately to
the press molds of the forming machine. The
mechanism employed for alternately severing the
streams of molten glass is the same and is actu
ated in the same manner as that heretofore de
scribed in connection with the construction illus
trated in Figs. I to XXVII, inclusive.
The forming machine employed in this embodi
a cam (not shown) on the Geneva crank shaft
358, which also serves to disengage a vertical
locking pin (not shown) from'one _of the holes
365 which are intermediate the table slots of the,
Geneva movement, and with which the pin en
gages when the table comes to restl (see Fig. 45
XXX). 'I‘his cam and locking pin areV substan- _
tially similar to the cam 95 and locking pin'96 '
'shown in Fig. XIV.
»
-
.
. .
y
Each of the blow molds S' of this second ex-"
_ emplil'lcation of my improved forming machine'Y
is opened .and closed 'by an ’ intergeared twin
shaft mechanism 36E-361 similar to that used to
operate the neck ring sections of the press molds
ment of my invention as in the first embodiment', .-(see central portion of Fig. XXX). These twin
comprises two press mold tables R'-L' which shafts 361-361 are concurrently revolved in opf
alternately receive the mold charges severed posite direction-to close the mold-by means of
from the streams, and a blow mold table M' in a piston 368 having a crosshead _368a attached
thereto which simultaneously- engages rollers 369
which the charges are blown to final shape.
Each press mold table R.'-L' carries four on the lower side of -the shaft connecting sector
gears'366-366 (see Figs.. XXXI and XXXII). 60
molds P’ (instead of ñve as in previously de
scribed construction) and both the upper neck
ring sections |02'v and the lower body sections
'I‘he crosshead piston v368 is moved outwardly in
|0I' of each of these molds are constructed and
operated in exactly the same way and manner
admitted to the rear end thereof by a two Way
as in the first illustrated embodiment of my in
-vention. The arrangement of the upper press
ing cylinders |1|’ and of the lower mold sup
porting cylinders |13’ is also the same, save'that
the upper press cylinders |1|' are rigidly and
permanently fixed in position, as theyare suf
ficiently separated to clear the front end of the
forehearth (Fig. XìQQ-which is in this case of
less width than that> shown in Fig. I-.and each
is suppbrted both by the central standard of the
press table, and by ‘a pair of tubular posts
its operating cylinder 310 by motive fluid which is
poppet valve 4(not shown) which is similar, in
construction _and operatiom'to theone shown in
Figs. 1U, XII and m and is returned to inner
position by tension' springs‘3'lI-3'II. There are
two of these cylinder units 310-310 located sym
metrically on the 'opposite sides-of the blow mold
table frame (beneath'the- table) which are re
70
spectively used, at alternate intervals,_to close the
blow molds S' at the transfer stations of the press
molds R'-L'.
_
Y
_1_
--
_
-
Each blow mold `S' is also provided with a
swinging blow head 315 and with operative crank 75
2,131,241
arm mechanism 315a therefor which is substan
tially identical with that already described, (com-A
pare Fig. XXXII with Figs. X, XI, XVI and
XVII), save that the heads 315. shown in Fig.
IQIXII are not provided with any side locking
arms for engaging the closed mold sections. _The
blowing heads 315 which are mounted on the out
er ends~ of the swinging pipes 316 are moved to
At 0.6343 second
tion of m'old R' on parison
blank
at 0.766 second
At 0.90
.
v
Neck ring sections |02' on
press mold R' opened
second ÑBlow head 315 for mold S' '
'
locked down
_locked position by a cylinder-piston assembly
At 0.90
second
forming machine frame in radial alignment with
the _transfer points of the press molds R'_L'
(vertically above the piston-cylinder assemblies
3158-310v for closing the blow :mold sections);
At 1.0
second
10 311-310 which are positioned on top of the
Blow mold S' at transfer sta
at transfer
station of mold R'
Blow mold table M' begins to
move
10
Charge delivered to mold on
press mold table L’ and
this table begins to move
15 and both of these blow liead‘cylinders 318 are At 1.4714 seconds Blow mold -table M' stops
(time of `movement '0.5714 15
constructed and operated in precisely the same
sec.)
way as the corresponding elements of the first de
At 1.5
seconds Press mold table L' stops
-scribed construction with the *exception> that in At 1.633 seconds
Blow mold S' closed on pari
this case 'separate c_ams and timer valves for ad- .
son blank at transfer sta
A20 Amitting motive fluid in succession to the neck ring
tion of mold L'
20
operating cylinders H6 (on the -press table sup
ports) and to the blow head cylinders 318 (on the At 1.766 seconds Neck ring sections |02' on
-press mold L' opened
~ blow table supports) are dispensed with. In thisy
At 1.9>
seconds Blow head 315 locked down
construction the motive fluid used
_
toA actua'te>
25
on mold S' at transfer sta
these cylinders IIS-Il6-318-318 is supplied
through ports 319 in the cylinders 310 that are
opened by the forward movement o_f the pistons
360 which close the blow molds. Pipes 300-380
connect the ports 319 with the cylinders IIB-_I i6
30 and pipes- 381-381 `~connect the .cylinders
IIB-_IIB with the cylinders 318-318. _Thus the
tion of mold L'
At 1.9'
' 25
seconds Blowmold table M’ started
seconds Press mold table R' started.
At 2.0
.
Cycle completed.
_
- In Fig. XXIX the press molds P' are shown
in the position which they occupy at 0.766 sec-
air which is admitted to the rear or inner end ond (supra): and in Fig. XXX; both the press
of each of the blow mold cylinders 310-310 ' molds P' and the blow molds S' are shown in the
serves, in turn, to (1) close and lock the blow _ positions which they have at the
end of 1.2214 `
35 mold sections S',
(2) open the neck ring sections
|02' and release the parison blank in the closed
, mold S', and (3) lock down the- blow head 315
on _the closed mold S'.
40
'
The_iiow of -motive fluid to each ofthe press
plunger cylinders I1|'-I13'_ is controlled by a
double-action-two-way timer valve 385 that is
actuated by cams 306,-336 on the vertical' shaft
32| operating the feeder mechanism (seeFig.
). _The two delivery pipes 381-388 from
each of these valves`385 are connected respec
~vely to the bottom of the lower press cylinder
|13' and .to the interior of one-of the adjacent
tubular posts 3“ which’ex’tends upwardly to the
.top of the upper cylinder -|‘||'_ and is there cross
connected by means of the pipe 303 to the tubular
standard> 390 on which the adjacent press mold
table revolves. The other ofthe tubular posts
346 serves as the communicating conduits that
seconds (supra): after-the blow-mold table M’
has been moving for 0.3214 second; and the press
table L’ has been moving 0.2214 second. 'I‘he to
tal time allowed for the transfer operations (e. g.,
0.4 sec.) lin the above scheduleis longer than in
the operation of the first described organization.
because the construction now being considered is 40
designed for the fabrication of somewhat larger
articles (e. g., quart jars) . This, of course, neces~
sitates the use of a somewhat greater center to
center distance between successive molds on both
the press tables and the blow table.
„
In' Figs. XXXV to XLVI still another embodi
ment of myl three-table-fomiing machine is il
lustrated which is designed for use lin conjunc
tion with a feeder of the same character as that
described in connection 'with Figs. HVIII and
XXIX that is indicated diagrammatically in Fig.
mv
'
‘
connect the topvof the lower cylinder and the
'I’he two press mold tables R"- ".of the con
upper end of the pressing cylinder, and are each struction now under consideration are so posi
provided at their upper termini with automatic tioned with respect- to the forehearth A' that
check valves like those shown at |32 in Figs. VIII „ their aires> of revolution- lll-_400 are in a piane
and XXIlI. `The- upper connections to the tops -asubstantial distance in front ofthe plane of the
of the neck ring cylinders IIS-IIB and to the two delivery orinces' F'-F' (see Figs. XXXV and
60 rear ends of the blow head cylinders 318-318 are-
XXXVI); and as a. result of this,vthe two points
each provided with similar valves' to ensure the of transfer of the tables R"_- "-that is, where
immediate and complete exhaust lof air from the lines of movement of the press mold P" c_en
those cylinders >when the connections thereto aref ters intersect the line of movement of the blow
closed by the retraction of the first piston ,of the mold S" axes-are brought closer to each other.
65 series. '~
and are only separated'by a distance equal to
An illustrative time schedule of the 'sequence
' of steps taken in one complete cycle of operations that between the centers of two successive blow
molds S". This permits of the Simultaneous
of the last described construction follows:
Vtransfer of two parison blanks from the press
At 0.0
second Charge delivered‘to mold on molds P", (one ,from the table R" and the other
70
„
press mold table R' and from the table L”), to two adjacent blow molds
70
table begins to move
.
8"; and alsopermits the two press tables R"_
At 0.50 second Movement of press mold L" to be moved concurrently by one common
table R' completed
driving mechanism. The two press tables R"
At 0.50 second Press mechanism of mold R' L" are secured to meshing gears III-“l and
`
set in operation
are moved,inunison,byasinglethreellotex- 75
_ 11
2,131,241
of the blow molds S"I--are opened and closed by
interg'eared twin shaft mechanisms, similar `to
teruel Geneva wheel 4oz (Fig. XLI), which is
secured to a vertical shaft 403 connected to one
" of the mold tables through the spur gears 404
405 which are of 3:4 ratio and thus rotate the
press molds R"-L" concurrently through one
fourth of a revolution on each one-third revolu
tion of the wheel 40'2. The Geneva wheel 402 is
actuated by a crank pin arm 406 which is se
cured to a vertical shaft 401 that is in turn
those shown in Figs. XI, XIQIIX, XXX and
XXXII. The intergeared twin shafts 430-430a`
which operate the upper and lowerl sections -of
>the press molds P" are coaxially mounted (see
Fig. XLIII); andare moved independently. AThe
shafts 430 _which are connected to _the neck
driven from the motor shaft 408 through the
worm and worm wheel elements 409-4I0 (see
Figs. XXXVIII, -XXXIX' and XL). This same
worm wheel shaft 401 also carries a second crank
pin arm 4|| which forms a part of a seven slot
15 internal Geneva wheel 4|2 that moves the
ring sections (see the right hand upper portion
`of Fig. XXXVI and the upper part of Fig-XLIII) ,
are actuated in unison b'y a cylinder and plunger
blow mold table M” (see Figs. XXXVIIIand
XXXIX); but the two Geneva movements-one
_ >of which has a period of action of one-sixth, and
the other of which has a periodof action of
_20 0.6429 of the time of crank pin rotation-are so
timed that the movement of the blow mold table
M" is completed before the press mold tables
R”-L" begins to move. In order to relieve both
of these Geneval mechanisms 402-4|2 from the
25 major part of the work‘of moving _the heavy ta
ble assemblies-and thus impose on them only
the duty of effecting the desired synchronisms of
, mold movement-I provide an auxiliary power
mechanism which - comprises a double acting.
30 pneumatic cylinder 4| 3, whose piston 4|4 is con
nected, at one end to a rack bar 4|5 that engages
a sector gear 4|6 journaled on the axis of the
blow mold table M" and coupled thereto by a
one-way pawl and_ratchet wheel drive 4|1-4I8.
The opposite ends of the piston 4|4 is connected
to a ñexible strap 4|9 that encircles a drum 420
rotatably mounted on the hub of the driving
mechanism 43| identical with that shown> insec
tional vdetail in Fig. XXIIï and the "shafts 430a
which are connected to the body- sections of the '
molds P" (see left lhand >upper portion of Fig. 15
XXXVI and the middle and lower >portion of
Fig. XLIII) -are actuated -by a- crank arm 432
which'is keyed to one of these 'shafts’430-430a‘
and is provided at its end with a cam roller' 433
that is engaged by a stationary cam track v434 on
the machine frame (see Figs. XXXVIII, XXXIX, _
zo
XLIII and the enlarged sectional view of Fig.
XLV). The intergéared shafts 435-43541. which
are linked tothe blow mold sections S" (see lower
part of Fig. XXXVI, and Figs. >XLII and _XLIV) 25
are concurrently rotated, to close and open the
molds, by crank arms ..436 which are securedv to
the upper ends of the shafts 435 of each pair of
shafts, and which are also provided at their ends
with cam rollers 431. These crank arms 436 are
rocked in one direction, to close the molds, by
a reciprocable piston v430 which is moved `out
wardly in a cylinder 439 in which it works by
the admission of motive f_luid tothe rear end
thereof and is returned to its inactive position
by means of a spring 440 (see Figs. XXXVI.
XXXVIII, XLII, _and XLIV). _ Thev crank arms
gear 40| of the press mold table R" and cou
pled thereto by a one-way roller clutch 42| (see
436 are moved in the opposite direction to open
the molds S." bythe engagement of the crank
nately admitted to the ends of this auxiliary pow
tioned just ‘in advance of the discharge station
arm rollers 431 with an inclined cam 44| posi
40 Figs. XXMX and XLV). -Motive ñuidis alter- _'
er cylinder 4 I3, at the instants when the Geneva
mechanisms 402-412 come into action to initiate
the movements of the blow mold table M" and
45 the press mold tables R"-L" by a timer valve
422 that is actuated by a cam 423 on the crank
shaft 401 of the said mechanisms (see Figs.
XIQIVIII and XLI).
`
Each press mold table R"-L" carries four
50 mold. units P", and in order to move these tables
40
(shown in Fig. mV only).
When, as in this case, the tables are so ar
ranged that there may be a simultaneous trans
fer of two parison blanks-one from each of the
45.
press tables R"-L”-to two immediatelyadlwa
cent blow4 molds S", only one cylinder-piston
mechanism 439-438, located on the center line
of the forming machine, is necessary to close
these two molds concurrently, but they are opened _
successively, while the blow mold table is in mo
through the mold interval (90 degrees) at each tion, as the> cam rollers 431 on the ' shaft 435
operation of the three slot Geneva movement engage the cam track 44| as they approach the
402, the spur gears 404-405 connecting the
Geneva Wheel 402 to the press mold L” areof discharge station. _
Each blow mold is provided with a blow head
~55 3:4 ratio, so that the two connected press mold `445 'of the `saine general construction as those
tables R"-L" are concurrently revolved one
fourth a revolution at each one-third revolution
of the three slot Geneva disc 4_02. Press mold
tables R”-L" are locked in position during their
60 period of rest, in the usual manner, that is by the
, engagement of the hub 40Ba of the Geneva crank
pin member 406 with the segmentally recessed
edges of the Geneva wheel 402. The larger and
heavier blow mold table M" is locked‘in its posi
v65 tions of rest, by a _vertically reciprocable pin v425
-which engages with one of the driving slots in the
edge of the wheel 4|2, and is withdrawn there
from-just before the table begins to move-by
previously described (see (Figs. X, XVI and XVII,
etc.); but in the arrangement now being> con
sideredl these heads 445 are arranged in pairs
that are supplied with blowing air by a common
conduit 445 which is ilexibly connected, at its
inneLend, to the central distributing head 441
about which the blow table M" revolves, and
which is engaged near its center by a compres
sion spring 448 `which serves to lift the blow 65
heads 445-445 away from the blow molds S". l
Each pair of connected heads 445-445 is locked
down on the associated pair of molds S" by
a lever 426 that is moved downwardly by a cam means of a single link mechanism 450 which is
70 projection 421 on the lower side of the driving _ substantially identical with that previously de
crank 4||- of the associated-Geneva movement scribed; and which is moved in one direction, to
(see Figs. m, XLI and XLVI). _
.
lower the heads, by a. piston cylinder assembly
45I-452, positioned immediately below the cyl- `
In this construction all of the mold sections
i. e., the neck ring and body sections of the - Inder 439 employed to close and lock the blow
75 press or parison molds P" and the divided halves mold sections (see Fig. XXXVIII). The link 75 -
12
_ 2,131,241
mechanism 450 is moved in the opposite direc
tion, to unlock the blow heads 445-445 and per
mit them to be 'raised by the spring 448, by
At 2.006 seconds Blow mold table stopped (time
`
At 2.006 seconds
means of an inclined cam track 453 (see Fig.
XXXV). 'I‘he mold closing cylinder 439 is sup
plied with motive fluid through a. pipe connection
455, which passes down through the center of
the blow mold table pedestal 441 and periodically
connected to a source of such ñuid by a timer
10 valve 455 that is actuated by a cam 451 on the
vertical crank shaft 401. As before, this motive
fluid delivered to the cylinder 439 passes in suc
cession through pipe connections 455 to the two
neck ring cylinders 43|-to simultaneously open
the neck ring sections of both press table molds
of movement 1.286 sec.)
Two more mold charges de
livered and the two press
tables started again. (Com
pletion of cycle.) '
When an even number of feeder and forming
machines are grouped in front of the melting
tank-_as illustrated in Fig. XXXVI-it is some
times advantageous to so arrange these machines 1b
that the blow mold tables M" of adjacent ones
move in opposite directions and thus deliver the
formed articles to a. single -common conveyor
(as illustrated in dotted lines in Fig. XXXV);
l5
R"--L" at the transfer stations-and then the driving mechanisms 32|b-32Ib being so ar
ranged
that
the
table
movements
occur
alter
through lvpipe connections 459 back to the blow v
head cylinder 452-to perform the ñnal step of nately at equally spaced intervals, in order to
the transfer operation-and is then exhausted avoid a “bunching” of the finished ware on the
concurrently from all three cylinders to permit
the return of their piston members to the in
- active position.
The air for operating the press
plungers 460 is simultaneously supplied to the
press cylinders 46| of the press molds R"-L"
by a double action two-way timer valve 452
(which is actuated by a third cam 453 on the
crank shaft 401) through pipes 454-455 which
are respectively connected to the hollow exteriors
of the two tubular columns 40B-400 on which
30 the press tables revolve, (from which it passes
through the upper cross heads 455 to the lower
ends of the press cylinders 45|), and to the
upper ends of these cylinders 45|. In this case
only one press cylinder 46| is used for each press
table, but the outer posts 415 which assist in
supporting these cylinders 45| are provided with
massive thrust blocks 41| on which the molds
P" rest when- the pressing is performed and
which serve -to relieve the press» mold supports
s. L.
from the strain of this operation. The use of
these thrust block supports 41 |-_--which present a
certain amount'of frictional'resistance to the
movement of the molds P", onto, and away from
them--is not objectionable when an auxiliary
power device is used to assist the Geneva mecha
nism in moving the press mold tables.
An exemplary- time schedule of the successive
step by step acts which are performed by the
last described combination of feeding and form
ing mechanism-when it is operated at a speed
of approximately sixty jars per minute-_would be
as follows:
At 0.0
second
CII :il
At 0.0-1- second
At 0.333 second
60
At 0.46
second
second
'
Neck ring sections of -press
molds at these stations are
simultaneously opened
At 0.72
second '
Blow heads of molds at trans
fer stations are concurrently
locked down
At 0.724- second Blow mold table set in motion
At 1.9
seconds Press plungers raised (time of
75
When an odd number of ma
in pairs is not so desirable.
From the foregoing description of my inven
tion it is apparent that each of the feeder mecha
nisms is readily and independently adjustable, 25
and as a result, uniformity in the mass of the
successive mold charges delivered alternately to
thc two- press mold tables is readily maintain
able. Further, with my improved dual feeder, by
rotating the bells concurrently in opposite direc 30
tions, I am able to produce a symmetrical cur
rent circulation in the forehearth which may be
ñowing in the same direction or in the opposite
direction to the currents of heating gases intro
duced into the forehearth and consequently the 35
molten glass -in the forehearth is maintained at
a more nearly uniform temperature than can be
secured with the present feeding mechanisms
since this concurrent rotation 'of the dual feed
ing devices in opposite directions keeps the mol 40
ten glass well agitated and prevents the localiza
tion of cold spot:l therein.
l
What I claim as new and desire to secure by
Letters Patent is:
,
1. In combination with a feeder for molten 45
glass having dual means for establishing twin
streams of molten glass adapted to be severed
into mold charges, of a forming machine having
a pair of press mold tables each having a series
of parison molds thereon for receiving the charges 50
severed from said streams, means associated with
each press table for shaping such charges into
Two mold charges are simul
taneously delivered to the R
and L press molds at the
delivery oriflce stations
Both press mold tables begin
to move simultaneously
Both press mold tables are
brought to rest and motive'
fluid is admitted to the up
per ends of the press cylin
ders
Blow molds at the R and L
transfer stations are simul
taneously closed
At 0.59
single conveyor.
chines is arranged in front of the tank (as shown 20
in Fig. VI) this arrangement of the machines
l pressing 1.57 sec.)
blanks, a blow mold table, and means fo'r accom
plishing a transfer of the blanks from the parison
mold of each of said press mold tables to said
blow mold table.
-
2. In combination‘with a feeder for molten
glass having dual means for establishing twin
streams of molten glass adapted to be severed
into mold charges, of a -forming machine having 60
two press tables each having a series of parison
molds thereon, for receiving the mold charges,
a blow table having a series of blow molds there
on, and cooperating means for effecting a trans
fer of the blank from the parison molds to the
blow molds, a head for each of said blow molds,
and means actuatedby said transferring means
for moving said heads into operative engagement
with said blow molds.
3. In combination with a forehearth for mol
ten glass having twin submerged orifices there
in, and means for alternately accelerating the
flow through each of said orifices, o‘f a forming
machine disposed beneath said forehearth and
having two press mold tables one of which is 75
¿13
2,131,241
into engagement with said blow molds.
positioned under each of said orifices.> each of lthe'1.heads
A forming machine comprising a pair of
said tables having a series of spaced blank molds rotatable presstables, a plurality of press molds
thereon, means for alternately severing the glass each composed ofl an upper and lower- section
streams ñowing through said oriñces linto mold
charges, and delivering .said severedy charges to carried by each` oiî` said tables,-a rotatable blow
table, a plurality of blow molds carried by said
the molds of said press tables, means for periodi
cally and alternately rotating each of said press blow table, ahead for each‘oi.' said v.blow molds,
kfor intermittently and alternately rotat
tables'to presentA successive molds in a charge means
ing each of said press tables to move >thepress
receiving position and then at a transfer posi
tion, a table having a series of spaced-blow molds
thereon, means for rotating said blow mold table,
and means for accomplishing a transfer of
charges-from first one and then the-other of said
press tables to the blow molds.
15
,
'
.
4. In combination with a forehearth for mol
ten glass having twin orifices therein, and means
associated with each of said oriñces for forming
a flowing stream of glass therethrough of regu
larly recurrent enlarged sections adapted to be
20 severed into individual mold charges, of a form
ing machine comprising two press mold tables,
one positioned below. each of said oriñces and
having a series of- spaced blank’molds thereon
for receiving the charges severed from the
25 streams, means for periodically turning said
tables to position each mold on each table under
its respective orifice, lmeans for preshaping the
» charges delivered to said molds, a blow table hav
ing a. series of spaced -molds thereon, means for
30 periodically rotating said blow table to position
. the molds in position to receive the blanks from
the molds of said press tables, and cooperating
means for accomplishing a transfer of the blanks
from' 'the molds of the press tables to_ the molds
positions, means for intermittently rotating the i
blow table to position alternate Vblow molds at
successive transfer positions, means forclosing 15
the blow molds at _the transfer positions, means
for opening the upper section of each press mold, ,
means controlled by the closing of the blow molds
for eiîecting an opening‘of kthe upper sections
of said press mold, and means actuated by the
operation of said upper sectionclosing means for
moving said head into engagement with said blow I
molds.
-
5. A forming machine comprising a
rotatable press tables,J a series of spaced
molds Aon each sai-d press table, each
parison molds having a divided neck ring
.
8. VThe method of ~making glassware which
consists inestablishing and maintaining contin 25
uously flowing streams _of molten glass through
two submerged oriñcesValternately and> periodi
cally accelerating the ñow through each of said
oriñces, severing mold charges from said’streams> `
during their periods of decelerated flow, pressing
the‘severed charges into. blanks while moving
the charges severed from each'stream in diífer-
ai
'
ent paths, and blowing the >blanks into finished
form while causing said blanks to travel ‘in the
same
of the blow table.
10
molds successively to transfer positions, means
for opening the lower section of the molds on
each .press table as they approach Vthe transfer
path.
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k9. A method of Iabricatingglass articles from
pair of a mass of molten glass, which includes causing
parison two streams of molten rglass to simultaneously
of» said >flow from such mass, alternately severing the
section, ' depending ends of such streams to form mold
a blow table having a series of blow molds there'
onfmeans for intermittently rotating each of said
press tables to move successive molds on each
table to a transfer station, means for 'intermit
tently rotating said blow table to move the molds
thereon past the transfer station of each press
45 table, means at the transfer station of each press
table for closing such blow molds, and means for
controlling the operation of said blow mold clos
ing means for opening the neck ring sections of
the molds. on said press tables to effect a transfer
-50 from the said parison molds to the blow molds.
6. A forming machine comprising a pair of
rotatable and adjacent press tables, a plurality
of blank molds on each of- said tables, each in
35
charges, delivering such charges‘severed from
one such stream to -the successive molds _of one "
series and such charges severedirom the other
such stream to the successive molds of another
series, partially forming all such charges.:trans- 45
ferring the partially formed >charges from each ‘
series of molds to the 'successivemolds of a third
series and completing the formation of such
charges while in the molds of the third series.
10. A method-of` fabricating glass articles from 50
a mass of molten glass, which includes causing
two streamsof molten glass to simultaneously
issue from such mass, alternately severing such
streams to produce mold charges, causing charges severed from the different ’streams to travel 55
through separate 4paths during the initial period ,
cluding an upper section and a lower section,
55 means for intermittently rotating each of said
for article formation and then causing the par
press tables to move the molds on each table to tially fabricated articles to travel Yin the same
a transfer station, means operablek on the rota
path during the n_nal period of article formation.
~tion of each of said tables for opening the lower »
11. A method of fabricating- glass articles from 60
60 sections‘of said blank molds as they approach a mass of molten glass, which includes causing
said transfer stationand closing such sections
after they have passed such station, a blow mold
two streams of moltenA glass fto simultaneously
issue from said mass, alternately severing such
table adjacent said press tables, a plurality of , streams to> produce mold charges, delivering the
blow molds >carried by said table, a head for mold charges Asevered from vone such stream `to 65
of said blow molds, means for intermit
the successive molds of a series of parison molds,
65 each
tently rotating said blow mold _table to present traveling~ in one direction and the» mold charges
molds at the transfer stationof each press table, severed from the yother s'uch stream to the suc
means operable when said blowy mold table is _
at rest for closing the blow molds at the transfer
A cessive molds of a 4series of parison molds trav
eling in another direction and then delivering
station of each press table, means controlled by . parisons from both such series to the vmolds of
70 the
operation of said blowl mold closing means
a series of- finishing ,molds all _traveling in the
for opening the upper sections of 'said blank
molds to effect a transfer from said press tables
12. A method of fabricating glass articles from
to said blow mold table, and means actuated on. molten> glass, which includes alternately deliver 75
the- opening of Vsaid upper sections for moving
same
75
direction.
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