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Патент USA US2122204

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June 28, 1938.
H4. GORA -
,2 1, 2 2,04
2.
JAR RING LATHE
Filed Feb. 2. 19:57
@N
6 Sheets-Sheet
I
gwucmkm
.He/z/y Gora/ '
June 28, 1938.
H, GQRA
2,122,204 '
JAR ‘RING LATHE
Filed Feb. 2, ‘1957
6 ‘Sheets-Sheet 2
Hamil/1' Gora
June 28, 1938.
H. GORA
‘ 2,122,204
~JAR RING LATHE
Filed Feb. 2, 1957
GIL ‘EVEL
I
6 Sheets-Sheet 3
_ June 28, 1938.
H. GORA
' 2,122,204
JAR RING LATHE
Filed Feb. 2', 195'?
6 Sheets-Sheet 4
3mm
Henry GOI'G/ '
MW) 5
.
June 28, 1938.
‘
H. GORA'
2,122,204
_ JAR RINGLATHE
~Filed_Feb. 2, 1937
6 Sheets-Sheet 5
June 28, 1938.-
H. GORA
2,122,204
J AR RING LATHE
Filed Feb. 2, 1937
' e Sheets-Sheet’ s
Hen/y QGorw '
_
Patented ‘June 28, 1938
STAE
a;
2,122,20d
m» m
r
Henry Gore, Bridgeport, Conn, assignor to Jen
kins Broad, New York,‘ N. Y” a comoration of
New Jersey
Application February 2,1937, Serial No. 123,671
20 @laims. ' (Cl.v 164-569)
This invention relates to lathes and more par
ticularly to means for indexing carriages of
lathes. More particularly still this invention
supplied to' my novel hydraulic indexing means
by varying the stroke of a pump.
_
Another object of this invention is to provide
a novel hydraulic indexing means for a lathe
relates to hydraulic means forindexing the car
which is operated by the lathe mechanism and in
3 riage of a jar ring lathe‘ to register the cutting
knives located on the carriage to cut a uniform _ timed relation therewith.
Another object of this invention is to provide
cut from the material carried between the cen
a novel hydraulic indexing means for a lathe op
ters of the lathe on a mandrel... More particu
larly still this invention relates to improvements erated by a pump driven by the lathe mecha
in lathes of the type described in my prior United nism in timed relation with the movement of the
Vic
States Patent Nos. 1,864,903, 1,950,920 and 1,957,
882.
'
-
Heretofore mechanical means have been em
ployed for indexing carriages of lathes. As these
15 mechanical means utilized many moving parts
considerable trouble was had with wear of these
moving parts resulting in faulty indexing of the
carriage of the lathe with consequent variations
in the cut made by the lathe. Since accuracy of
cut particularly with reference to gauge or thick
ness is essential it follows that much time is lost
on repairs to these mechanical indexing devices
as Well as expense incurred _by the necessary ire-'
pairs. Lathes using mechanical indexing devices
25 also use manual means for moving the carriage
to the position for commencing the cut, a slow\
and laborious task.
The present invention is
designed to obviate the dii?culties had with me;
chanical indexing means by providing hydraulic
30 means for carriage indexing as well as provid
ing pneumatic means to move the carriage to the
position of initial cut.
.
It is accordingly an object of this invention to
provide a novel hydraulic means for indexing
lathe cutters.
'
Another object of this invention is to provide
. a novel hydraulic indexing means for lathes in
which the motion of the carriage of the lathe is
controlled by a piston which is operated by a ?uid 15
supplied from a pump driven by the lathe mech
anism in timed relation with the movement of
the cutters of the lathe.
Another object vof this invention is to provide
a. novel adjustable hydraulic indem'ng means for 20
lathes in which the motion of the carriage of the
lathe is controlled by a piston which is operated
by a ?uid supplied from a pump of adjustable
stroke driven by the lathe mechanism in timed
relation with the movement of the cutters of the
lathe.
’
r
A further obieetof this invention is to pro
vide a novel hydraulic indemng means for lathes
in which the degree of movement of the carriage
of the lathe is controlled by the amount of ?uid
admitted to a piston in driving relation with
the carriage of the lathe by a pump driven by
the lathe mechanism in timed relation with the
movement of the cutters of the lathe.
A still further object of this invention is to
Another object of this invention is to provide a provide a novel hydraulic indexing means for
' novel hydraulic means for indexing the carriage lathes in which the degree of movement of the
carriage of the lathe is controlled by the length
of a jar ring lathe.
Another object of this invention is to provide of stroke of a pump supplying ?uid to a piston
in driving relation with the carriage of the lathe 40
40 a novel‘ pneumatic means working in conjunc
tion with my novel hydraulic indexing means for . and driven by the lathe mechanism in timed re
moving the carriage of a lathe to its position for lation with the movement of the cutters of the
35 the carriage of a lathe.
'
the initial cut.
1
lathe.
~
Another object of this invention-is to provide
45 a novel pneumatic means working-in conjunction
with my novel hydraulic indexing means for mov
ing the carriage of a jar ring; lathe to its position
for the initial out.
,
.
Another object of this invention is to provide a
50 novel hydraulic means for indexing the carriage
of a lathe in which the index positions may be
controlled by varying the amount of ?uid sup
plied to the hydraulic indexing means.
‘
Another object of this invention is to provide
a novel means for. controlling the amount of ?uid
'
.
Another and still further object of this inven
tion is to provide a novel hydraulic means for in 45
dexing the carriage of a lathe vin-which a piston
in driving relation with the carriage of the lathe
is supplied with ?uid from a pump driven‘ by the
lathe mechanism to index the carriage of the
lathe and is supplied with compressed air to re
.turn the carriage of the lathe to the position. for
the initial out.
Another object of this invention is to provide
a novel hydraulic and pneumatic ‘system for in
dexing the-carriage of a lathe and for return 55
2
2,122,204
ing the carriage of the lathe to its position for
starting the out.
>
Another and still further object of this inven
tion is to provide a novel hydraulic and pneumatic
system for indexing the carriage of a lathe and
for returning the carriage of the lathe to its
position for the initial cut controlled by a single
manual control.
f
=
Another and still further object of this inven
tion is to provide a novel hydraulic and pneu-'
matic cylinder and piston for use in a hydraulic
and pneumatic system for indexing the carriage
of a lathe and for returning it to its position for
starting the cut in which ?uid is admitted to one
15. side of the piston to index the carriage of the
lathe and compressed air is admitted to the other
side of the piston to return the carriageof the
lathe to its position for commencing the out.
Another object of this invention is to provide
20 a novel hydraulic and pneumatic cylinder and
piston for driving the carriage of a lathe to index
the carriage of the lathe and to return the car
riage of the lathe to its position for the initial
cut in which ‘a ?uid under pressure is admitted
25 to one side of the piston and compressed air is
admitted to the other without leakage of the
air into the ?uid or of the ?uid into the air.
Another and still further object of this inven
tion is to provide a novel hydraulic and pneu
30 matic system for indexing the carriage of a lathe
by driving 'a piston engaging the carriage of the
lathe by a ?uid under pressure and for returning
the carriage of the lathe to its position for the
initial cut by driving the piston by compressed air
35 in which the fluid is returned to‘ a reservoir by the
piston when the piston is driven by the com
pressed air.
_
‘ '
Fig. 7 is a cross‘ sectional view of the ‘hydraulic
and pneumatic cylinder and piston shown in
Fig. 5 taken on the line 1-1;
Fig. 8 is an enlarged view in cross sectional
elevation of the embodiment of the invention
5
shown in Fig. 1 as seen from the turret head with
the motor, gear box, driving head, and oil reser
voir removed to more clearly show the relation
of the carriage and cutters to the hydraulic and
pneumatic piston with particular attention to 10
the cutter actuating mechanism;
Fig. 9 is a ‘perspective view of the pump and
rocker arm actuating mechanism with the pump
adjusting meansgshown in an exploded view as
seen from the right in Fig. l; and
15
Fig. 10 is a perspective exploded view of a por
tion of the pump and rocker ‘arm actuating
mechanism as shown in Fig. 9.
'
In the several ?gures in which like reference
characters indicate like parts and more partic 20
ularly with reference to Figs. 1 and 4, l0 indicates
any standard lathe bed of» any desired size and
construction supported on legs II .which carry a
scrap and shavings tray l2 of any desired size
and construction and which are braced by a tie 25
rod l3. Suitably mounted on one end of lathe
bed I0 is an electric'motor l4 of any suitable "
design and horse power supplied with current
from any suitable source of supply through an
electrical conduit l5 and controlled by any suit 30
able electric switch IG connected into conduit l5.
Electric motor l4 drives through shaft l1 and
?exible joint iii to shaft I.9.of gear box 20 which
is suitably mounted on lathe \bed li'l.v Shaft IQ
of gear box 20 passes through gear box 20 and 35
terminates in a driving head 2! designed to hold
and rotate a mandrel 22 upon which is mounted _
Other and further objects of this invention
will appear as the description of the invention
the material 23 to be cut. Mounted upon the
opposite end of lathe bed In is tall stock 24
designed to engage mandrel 22 and of any desired 40
While the embodiment of my invention dis
construction here shown as having a live center
closed in theaecompanying drawings, to be here
25 which is clamped in position by clamp 26 while
after described, shows my invention as applied to work is being cut and which is slid into and out
a jar ring‘lathe, it is expressly to be understood of engagement with mandrel 22 when clamp 26
745 that the disclosure of my invention as applied vis released by a spring and lever connection 21. 45
to a jar ring lathe in no way limits the scope of
Mounted-between gear box 20 and tail stock
my invention. Reference should be had to the 24 and designed to siidably engage lathe bed Iii
appended claims to determine the scope of the is lathe carriage 28 upon which are mounted ro
present invention.
'
~
tary-cutters 29. Mounted upon lathe bed In and
50. In the accompanying drawings: _
under carriage 28 is toothed rack 29'. Carried 50
Fig. 1 is an-‘elevation of one embodiment of by carriage 28 is gear 30 (Fig. 4) which engagesv
my novel hydraulic and pneumatic indexing rack 29’ and provides a means for manually in
means as applied to a jar, ring lathe;
dexing carriage 28 if desired through boss 3| on
Fig. 2 is a. view of the embodiment of Fig. 1 the shaft of gear 30 designed to take a crank or
55 as seen from the top showing in more detail the
other suitable rotating means. Also carried by.
positioning of the lathe carriage on the lathe bed carriage 28 ‘is ?nger 32 of suitable length and
and the rocking bar that actuates the ‘cutters;
adjustable in position designed to engage switch
Fig. 3 is a view of a part of the embodiment 'of 33 mounted on lathe bed It to break the electric
the invention shown in Fig. 1 as seen from the circuit to motor. M to stop the operation of the
.60 rear in Fig. 1 showing the positioning of the car
lathe 'whenthe end .of the cut is reached.
60
riage on the lathe bed with reference tothe
Carried between ‘rails 34 (Figs. 3, 4 and 8) of
rocking bar and cutter actuating mechanism;
lathe bed in is hydraulic and pneumatic cylinder
Fig. 4 is an end view of the embodiment of 35 suitably secured to lathe bed III as by the '
the present invention shown in vFig. 1 on an en-‘ collar 36. Mounted within cylinder 35 is pis
65 larged scale as seen from the head stock end;
ton 31 having-a suitable piston rod 38 secured 65
Fig. 5 is an enlarged cross sectional- elevation thereto and extending outward through the in
40
proceeds.
}
of the embodiment of my novel hydraulic and
pneumatic cylinder and piston as shown in Fig; 1
showing in detail the cylinder and piston con
70 struction and the method used to effect the driv
ing relation between the piston and the lathe
carriage ;
~
0
Fig. 6 is a cross sectional 'view of the hydraulic
and pneumatic cylinder and piston shown in Fig.
5 taken on the line 6-6;
> -
ner end of cylinder 35 and secured in any suit-_- '
able way to a depending lug 39 secured to car-_
riage 28.
'
’
Carried by shaft is in gear box 20 is gear‘ 40
designed to engage and rotate gear ll secured
to shaft l2 which takes bearing in the walls
of gear box 20 and is spaced apart from and
parallel to shaft l9. ‘Mounted on one end of shaft
62 and free to rotate thereonv is gear member 43
3 .
araaacc
designed to form a clutching engagement with
clutch member 44 which slidingly engages shaft
42. Clutch member 44 is moved into and out of
engagement with gear 43 by clutch actuating
lever 45 pivotally engaging clutch lever support
46 secured to lathe bed Ill. Engaging'gear 43
and passing over an idling gear 41 (Figs. 4 and 8)
is chain 48 forming a driving connection between
gear 43 and a large driven gear 49 secured to a
10 rotary disk member 50 which is secured to a
shaft 5| taking bearing in a frame 52 secured
to lathe bed I0. Mounted on shaft 53 taking
bearing in a projection 5410f frame 52 is segment
gear 55 (Figs. 9 and-10). Secured-to the inner
15 end of shaft 53 is a female member 55 within
which slides'a slide member 51' which rotatably
engages a pin 51 secured to disk 55. Engaging
segment gear 55 in toothed engagement is rocker
arm 58 secured to square shaft 55 which takes
'20 bearing at one end in‘bearing 60 secured to lathe
ranged that it is open when valve 85 is admit
ting air to cylinder 35 through air line 81.
With particular reference to Figs. 2, 3 and 8
carriage 28 is designed to slidingly engage rails
35 of lathe bed It and has secured thereto hear
ing 6! within which square rod 59 takes a sliding
hearing all as described above. Secured to car
riage 28 is cutter base plate 92 which is roughly '
H-shaped carrying oppositely'disposed bearings
93 and Elli in the extremities of the H. Carried by
bearings 93 is a member 95 having two outward
ly extending arms 95. Arms 96 terminate in
bearings 91 within which a cross member 98 is
free to rotate. Cross member 98 is apertured to
receive a connecting rod 99 which is secured 15
bed III and at the opposite end slidably engages
bearing BI secured to carriage 28.
thereto by nuts I55 and IIJI forming an adjustable
connection. Connecting rod 99 terminates at
its opposite end in a bearing member I02 which
rotatably engages sliding arm IE3 at pivot I05.
Sliding arm I03 is mounted on square bar 59 at 20
its opposite end and is designed to freely slide
thereover. Member 95 taking-bearingin bear
mounted for oscillation upon a shaft 55 taking.‘
bearing in a. portion of frame '52.‘ Mounted upon
the opposite end of shaft 54! is female member 55
and cutter 25 longitudinally with respect to the
mandrel 22 and the oppositely disposed cutter 25.
By proper adjustment of nuts Hill and lIiI cutter
Mounted on the opposite end of shaft 5i is a. ings 93 of base plate 92 is triangularly grooved
disk member 62 carrying a pin 62' upon which is as at I55 (Fig. 8) to slidingly engage the triangu
25 rotatably mounted a slide member 53'. Slidably lar shaped base I55 of cutter arms I01. Base I05
engaging slide member 65' is female member 65 can be moved within groove I55 by hand knob I08
and screw I05 to adjust the position of arms I01?
30 (Figs. 9 and 10) within which rides a male mem
25 may be moved away from or toward mandrel’
ber 56 designed to slide within female member 22. Cutter 25 is designed to freely rotate within
55 under the action of set screw Iil, set screw» bearings H5 located at the extremities of arms
61 being provided with a collar Bl’ designed to
I51. Secured to member 55 'to rock therewith
engage a slot 65' in female member 65. Secured‘
35 to male member 56 is a pivot 55 designed to re
ceive for rotation thereon one end of a connect
is a rack arm I I I extending centrally into bed 35
plate 52.
-
.
-
Carried for rotation in bearings 95 is member
ing rod 55. .The opposite end of connecting rod > H2 having upwardly extending arms H3 carry
59 rotatably engages, as at 70 (Fig. 4), a pump ing bearings H5 in which the opposite cutter 29
plunger element ‘II designed to slidably engage is free to rotate. Also mounted to rotate within 40
40 the walls of a pump cylinder ‘I2 closed at its bot
Pump cylin
der 72 has an inlet ‘I5 controlled by a check valve
_ tom and secured 'to bracket 52.
bearings M1 is rack arm I I5 designed to engage
rack arm III and to move therewith.
Rack arm
H5 has formed thereon projections lit and Ill.‘
_ ‘It’ which may have an adjacent ?lter l5. Com- _ Mounted on member H2 is set screw housing H8
pletely surrounding the actuating ‘mechanism for carrying set screw H5 designed to engage pro 45
45 pump plunger ‘ii and-rocker arm 55 and extend
jection N5 of rack arm H5. Mounted in pro
ing upward over gear 55 is a closedcasing ‘I5 jection III of rack arm H5 is set screw I25 de—
forming a tank of suitable design and construc
signed to engage the under surface of set screw
tion partially ?lled with oil to provide an oil housing I It. By proper adjustment of set screws
bath for some of the moving parts of the above H5 and‘i2ll the position of member II 2 and cut 50
50 described pump and rocker arm actuating mech
ter 25mm be adjusted with reference to mandrel
t '
anisms as Well as supplying an oil reservoir for 22 and oppositely disposed cutter 25.
pump plunger-‘II and cylinder ‘I2. _Pump cylin
der ‘Iiihas an outlet ‘It to which is connected the
intake of a check valve ‘II. From check valve 'I'I
55 a pipe ‘I8 passes through tank ‘I5 as at ‘I9 form
ing a ?uid-tight seal therewith. To pipe ‘I8 is
secured at its other end an elbowB! screwed into
end closure cap 52 of cylinder 55 and opening into
the
interior of cylinder 35. From pipe It a'pipe
60
83 leads to a valve 55. From valve 55 a pipe 85
enters tank ‘I5 adjacent its top.
A connection 55 secured to the inner end .of
With-reference to Figs. 5, 6 and 7, as‘de
scribed above, hydraulic and pneumatic cylinder
35 is carried between rails 35 of lathe‘bed It
as
and secured thereto by a collar 36 (Figs. 3 and 4) .
Carried within cylinder 35 is a piston member
generally indicated at 31 and secured to a piston
rod 55 secured at its outer end to depending ing
39 of carriage 28 as by the nut and bolt I2I. 60
Piston rod 35 is axially bored to form a central
hollow chamber I22 extending the full lengthX
of piston rod 38. Piston rod 38 is internally
cylinder 35 opens into the interior of cylinder 35. . threaded as at I25 to receive end closure mem
ber I25 to which is secured bolt IZI. End mem 65
Secured to connection 85 is an air line 51 lead
ing to one side of ‘an air valve 58. Air valve 88 ber I25 is vented as at I25. Cylinder 35 is of en
is connected to any suitable source of supply of larged diameter as at I26 to receive a bearing
compressed air by air line 59. Air Valve 88 is and collar member I21 within which ‘piston rod
provided with an exhaust port 55- which allows 38 is designed to slide. Collar member I217 has
line 81 and cylinder 55 to exhaust air when formed therein a circumferential groove I28 to 70
70 air
form an air seal between member I21 and piston
air valve 88 shuts 011’ the supply of air. Con
nected to thepactuating lever of air valve 65 is - rod 38. Collar member I21 is recessed at I29'to
a rod 5! secured at its opposite extremity to the receive air packing seal I35 and has formed
actuating lever of valve 84 so that valve 85 may ‘ therein passages |3I which open into a cir
cumferential, chamber I32 opening against .air 75
75 be operated with valve 88, valve 85 being so ar
a
2,122,204
' packing seal I30. Gland nut I30’ screws into
the end of cylinder 35 to hold collar member I21
?rmly in enlargement I26and to expand pack
ing seal I30. , The inner end of piston rod 38 is
internally threaded as at I33 to receive piston
member I34. Piston member I34 is centrally re
cessed as at I35 and has formed thereon an ax
ially extending guide and support member I36
into which is let holes I31 communicating with
.10 passage I38 which opens into recess I 35. Piston
member I34 is cut away as at I39 to allow air
packing seal I 40 to be carried by piston member
I34 in overlapping position. Passages I4I allow
the air under pressure in cylinder 35 to enter
15 cut away portion I39 and to act against the
inner surface of packing seal I40. Piston mem
ber I34 has formed therein circumferential
grooves I42 to form an air seal between piston
member I34 and cylinder 35. Mounted upon
20 support member I36 is disk I43 which slidingly
' engages the walls of cylinder 35. ‘Also mounted
on guide and support member I36 is second
piston member I44 which is centrally recessed as
at I45 and cut away as at I46 to carry an air
25 packing seal I41 in overlapping position. Pas
sages I48 are formed in second piston member
I44 adjacent disk I43 and open into central re
cess I45. Passages I49 lead from cut away‘ por
tion . I46 to central recess I45. Central recess
30 I45 opens into the interior of hollow piston rod
38 through passages I 31, I38 and chamber I35.
Mounted on supporting member I36 is disk
I50 slidably engaging the walls of cylinder 35 and
pressing against air seal pack I41. Carried
35 against the opposite face of disk I50 is oil seal
pack I5I designed to overlap into cut away por
tion I52 of third piston member I53 also mounted
on‘ supporting member I33. Passages I54 in
third piston member I53 open cut away portion
40 I52 and the inner surface of oil seal pack I5I to
the oil under pressure in cylinder 35. Third
piston member I53 has formed therein circumfer
ential grooves I51 to form an oil seal between pis
ton member I53 and cylinder 35. A nut I55 and
45
washer I56 engaging supporting member I36
act to pack piston members I34, I44, and I53
together and to expand air seal packs I40 and
I41 and oil seal pack I5I. Threaded to cylinder
riage 23 to be moved from its position adjacent . v
gear box 20 to a position adjacent tail stock 24.
- To this end. the operator opens valve 88 to admit
air under‘pressure to conduit 81 and to the air
chamber in cylinder 35. The motion of open
ing valve 88 is transmitted through rod SI and
opens valve‘ 84 in the return oil line 85; Air un
der pressure in the air chamber in cylinder 35
passes on the one hand into passages I3I (Fig. 5)
in collar member I21 ‘and from there into cir 10
cumferential chamber I32 and cut away portion
I29 where the air under pressure, engages the
inner surface of air packing seal I30 to press
air packing seal I30 against piston rod 38, cylin
der 35, and gland nut I30’ to form an air tight 15
seal around piston rod 38- and between cylinder
35 and gland nut I30’. Circumferential groove
I28 also acts to form an air seal between collar
member I21 and piston rod 38. . The air under‘
pressure in the air chamber of cylinder 35 on 20
the other hand passes into passages I4I of pistonv
member I34 and from there into cut away por
tion I39 where it acts upon the inner surface of.
air packing seal member I40 to force air packing
seal member I40 against the walls of cylinder 25
35 to form an air tight seal therewith. Any air
escaping between air packing seal member I40
and the walls of cylinder 35 must pass disk I43.
Air passing disk I43 enters passages I48 and
?ows into passages I31 and from passages I31 30
is led through passage I38vto chamber I35 and
to the hollow interior I22 of,piston rod 38 from
which it escapes’through vents I25 to the out
side atmosphere. Any air passing disk I 43 and
passages I48 passes the end of second piston 35
member I44 and enters cut away portion I46
thereof where it comes into contact with the in
ner surface of air packing seal member I41 to
press air packing seal member I41 against the
walls of cylinder 35 to form an air tight seal
therewith. Air leaking into cut away portion
I46 is conducted therefrom through passages I48
to chamber I45 and from there by passages I31
and I30 to chamber I35 and to hollow interior
I22 of piston rod 38 from which it escapes
through vents I25. Having formed an air tight 45
seal between piston 31 and the walls of cylinder
35 the air under pressure acts to move piston 31 ‘
35 as at I58 is end closure cap 82 forming an oil to the right as seen in Figs. 1 and 5. This mo
tight
seal
therewith.
Opening
through
cap
82
is
'
50
tion is transmitted through piston rod 38 to de
elbow 31 to which is secured conduit 10 leading
from the source of oil supply. Set in cap 32 is
air valve I53 of any suitable design and construc
tion to exhaust any air brought into the cylinder
55 35 by the oil.
-
Suppose that the embodiment of the present
invention above described is set up as shown in
the several ?gures and suppose that the lathe has
just completed cutting a mandrel of work. At
60 that time carriage 28 will have been forced to
the left as seen in Fig. l by the action of piston
31 to a positionadjacent the inner end of gear
‘box 20, and arm 32 ,will' have contacted switch
33 to break the circuit to motor I4. ' When mp
pending lug 38 of carriage 26 moving carriage 50
23 to the right toward tail stock 24. Motion of
piston 31 to the right in cylinder 35 forces
any oil contained in the oil chamber of cylinder
35 outward through elbow 8| and conduit 18 55
through which it passes until it backs up against
check valve 11 (Fig. 4) The oil then ?ows up
ward through valve 84 which is. open, as above
described, and passing therethrough enters pipe
85 and ?ows into the top of tank 15. Piston 31 60
continues to move to the right drawing carriage
23 with it until some suitable stop such as a
bumper or other suitable structure is reached I
or the-operator shuts oil’ the air.
‘when carriage 20 has reached the desired po 85
their extreme openedposition, that is in their sition
adjacent tail stock 24 the operator closes
position'for no cutting removed as far as possi
valve 88 and shuts oi! ‘the air supply. Closing
ble from mandrel 22. 'If the cutters 28 are not valve 88 also closes valve 84’ through the medium
in their extreme opened position mandrel 22 ‘is of rod 3|. vValve 83 is so constructed that when '
rotated by hand until they assume this posi
valve 88 is closed exhaust port 80 is ‘opened
tion in a manner to be hereafter described. allowing .the air in the air chamber‘ of cylinder 70
When cutters 23 are in their extreme opened po
35 to exhaust into the surrounding atmosphere.
65 'tor It stops, cutters 29 may or may not be, in
' sition theimandrel of completed} work is removed
from the lathe and a new mandrel placed in the
lathe. To start the work it'is necessary for car
The carriage 20 and cutters 28 are now in posi
tion to commence-work on the material carried
by the mandrel. The, operator then oldies switch 76
5
2,122,204 ‘
it to supply motor I 4 with electric current (Fig.v
1). Motor i4 rotates and driving through shaft
i‘! and ?exible joint i8 rotates shaft i9 and driv
ing head 2| and rotates mandrel 22. Rotation
of shaft l9 rotates gear 40 which in turn rotates
gear 4! and shaft 42. Shaft 42 driving through
clutch member 4% rotates gear 43 which acting
through chain 48 rotates gear $9.. Rotation of
gear 49 rotates rotary disk member 50. Rotary
10 disk member 50 carries with it pin 51 which
slidably engages female member 56 through slide
member 51’ and gives an oscillatory movement
thereto. ' Female member 56 transfers its oscil
latory movement to shaft 53 and segment gear
15 55. Oscillations of segment gear 55 move rocker
arm 58 in an oscillatory movement which rocker
arm 58 transfers to square shaft 59. Oscillations
of square shaft 59 are transferred. to sliding arm
m3 (Figs. 2, 3 and 8) and connecting rod 99.
equal volume of oil is forced into cylinder 35 and
moves piston 37 an equal amount and indexes
carriage 28 so that cutters 29 may make‘ a cut
equal ‘to those previously made and so on until
the mandrel is completed and arm 32 engages
switch 33 to stop motor it.
As was above described an adjustment is pro
vided whereby. the gauge of the thickness of the
cut made by cutters 29 may be varied as desired.
To this end male and female members 66 and 55 10
are provided with a set screw ii'i which by rota
tion varies the position of the male member 66
v with reference to the female member 65 through
the medium of collar '5'!’ and slot 55’. Sliding
'of the male member 66 within female member 65 15
also changes the relative-positions of pivot 68
and the center of shaft 63 which changes-the
amount connecting rod 69 and piston plunger ‘H
are moved thereby varying the amount of oil
pumped on each stroke of plunger ‘ii to cylinder 20
20 Connecting rod 99 acts to move cross member 38
which acting through arms 96 rocks member ~35 and varying the amount of movement of
95 in bearings 93. Rocking motion in member piston 37, carriagev 28, and cutters 2d. The fur
ther pivot St is removed from the center of shaft
95 is transmitted to base ME and arms it‘! car
rying cutter 29 and moves cutter 29 toward and 66 the larger the stroke of connecting rod 59 and
pump plunger ‘ii and the‘ more oil forced into
25 away from mandrel 22. Rocking motion in mem - cylinder 35 and the larger the movement of piston
ber 95 is also transmitted to rack arm ii i which
37 and carriage 28 with a consequent thicker cut
engaging rack arm H5 gives a similar move
ment to member H2. through the medium of_set made by the cutters 29.
screws H9 and i2!) and set screw base H8.‘
30 Movement of member H2 is transmittedto cut
ter 29 by arms H3. Cutters 29 are therefore
provided with equal movement either toward or
Gear 53 and clutch member 46 actuated by
30
ters 29. By use cutters 29 are dulled and the ei‘?- '
lever t5 play a part in the conditioning of cut
ciency of the machine diminished and the nicety
of the cut reduced. When this occurs clutch
Returning now to Figs. 1, 4, 8, 9 and 10, rota— -member MB is disengaged by the operator from
tion of disk member 50 rotates shaft St to which gear £3 at an appropriate time in the cycle of the 35
mechanism so that cutters 29 are 'still in the cut a
it is secured and which in turn rotates disk mem
ber 62 and pin 62'. Pin 62’ is positioned on disk and are being rotated by mandrel 22 or the op- '
member 62 with reference to pin iii so that the erator may disengage clutch member M at any
movement of the various parts of the mechanism time in the cycle of operation and by manual
have the properly timed relation. Rotation of rotation of mandrel 22 move cutters 29 into en 40
disk member 52 driving through pin 52' and gagement with the material 23 being cut. Dis
engaging of clutch member M stops any further
slide 63' oscillates female member 63 with a vary
ing velocity; Oscillati'omof female member 63 longitudinal movement of cutters'29 with rela-v
oscillates shaft 8t and female member 65 (Figs. tion to mandrel 22 and stops the actionof pump
9 and 10). within which rides male member 65. plunger ‘ii and intermittent motion of piston 31 45
Oscillation of male member 66 moves connecting so-that carriage‘ 28 remains in place and cutters
2Q rotate under the action of the material on
rod 69 and acts to move pump plunger ‘ii in re
ciprocating motion incylinder 12, the variable mandrel 22. The operator may then apply a
velocity of female member 63 being so controlled stone ‘or other sharpening means to cutters 29.
When cutters 29 are reconditioned clutch mem 50
as to provide a rapid down stroke of pump plung
ber M'may be engaged with gear 63 and the cy
er ‘ii into pump cylinder 12 and a slow with
away from the mandrel 22 at the same instant.
35
.40
45
.
50
drawal therefrom. Rapid downward movement
of pump plunger ‘ll forces oil, drawn into cylin
der 12 through check valve 14' on the slow. with
55 drawal of pump plunger ‘H on the previous cycle,
outward through check-valve ‘i1 asv check‘ valve
14' is closed and pipe 'l?'to the oil chamber of
cylinder 35. Oil entering the oil ‘chamber of
cle of the‘machine recommenced at the point
. where it was interrupted.
‘
While the embodiment of the present invention
above described is designed to normally make two 55
cuts for each cycle of operation, it may be desired
to make only one cut for each cycle of the mecha- '
nism.
Adjustment is then made through the
cylinder 35 passes through passages I54 intocut Y above described cutter-adjusting mechanisms to
either of cutters 29 as desired out of cut 60
60 away portions I52 of third piston member I58 " move
ting engagement with the material 23 on man- '
and coming into contact with the inner surface
of Y011 seal pack IBI forces oil seal pack Iii - drel 22 so that only one cutter 29 will cut and the
against the surface of cylinder 35' to form an oil stroke of piston ‘II is adjusted through set screw‘
tight seal therewith. The oil under pressure
61 .to pump-half the normal volume of oil tocyl
drel 22‘ when pump plunger ‘Ii. forces oil to cylin
position by varying the volumes of ?uid supplied
65'
then acts to move piston. 31, piston rod", car , inder 35*t0 give half the normal movement to
riage 28, and cutters 28 to the left as viewed in, carriage .28 for each cycle of the ‘mechanism.
From the above it will’ be now apparent that
Fig. 1 in amount depending on the amount of
oil forcedlfrom pump cylinder 12. As explained the present invention provides a novel hydraulic
above male members 61 and 62' are properly indexing means for carriages of lathes' which also
provides a novel pneumatic‘ means for’ moving
70 timedso that they are so positioned with refer
ence to each other that. cutters 29 will-be in the carriage to its position for the initial cut and
which‘ has a. novel means for varying the index
their extreme outward positions away from-man
der 35 to index ‘carriage 28‘ for, the next out. v‘to the hydraulic means. It is also apparent that
75 On the next cycle of the mechanism another
the present invention provides a novel hydraulic 75
. 12,122,2ild
~ means for indexing‘ the carriage of a lathe which for moving said carriage in intermittent motion
is operated in timed relation with the movements of equal increments including a cylinder mounted
of the cutters ofthe latheas well as provides a on said lathe bed, a piston mounted-in said cylin
novel pneumatic means for moving the carriage der, means connecting said piston and said car'
of the lathe to its position for initial out both of riage, pump means supplying equal volumes of
, which are controlled by a single manual control
?uid to said piston in said cylinder‘ at intervals
and operate in a single cylinder without leakage timed to the movement of said cutters, and pneu
of the one medium into the other, the hydraulic matic means for supplying air to said piston in
medium being returned to a reservoir after use ~ said'cylinder to return said piston» and said car
10 and the air of the pneumatic means being ex
, ‘riage after said hydraulic means have completed
hausted from the system after use.
movement of said piston and said carriage.
To those skilled in the art it will now be ap
7. In an indexing mechanism of the class de
' parent that’ changes may be made in'the above‘ scribed having a lathe bed, a carriage slidably
described embodiment of the present invention
15 without departing from the inventive concept mounted on- said lathe bed and cutters, mounted
for movement on said carriage, hydraulic means
thereof and reference should therefore be had to for moving said carriage in intermittent motion 15
the appended claims to determine the scope of of equal increments including a cylinder mount
the present ‘invention.
ed on, said lathe bed, a piston mounted in said
What is claimed is :
'
cylinder, means connecting said piston and said
20
1. In a hydraulic indexing means for lathes carriage, a pump supplying equal volumes of ?uid
having a lathe bed and a carriage slidably mount
to said piston in said cylinder at intervals timed
ed thereon, a piston, a cylinder for said piston to the movement of said cutters, and means for
mounted on said lathe bed, means connecting said adjusting the volume of ?uid delivered by said
piston and'said carriage, and hydraulic means
25 supplying ?uid to said piston in said cylinder to ,pump to said cylinder whereby the size of the
equal increments of movement of said carriage 25'
move said piston and said carriage in intermittent
motion in equal increments.
‘
2. ‘In a hydraulic indexing means for lathes
having a lathe bed and a carriage slidably mount
30 ed thereon, a piston, a cylinder for said piston
mounted on said lathe bed, means connecting said
35
piston and said carriage, hydraulic means sup
plying ?uid to said piston in said cylinder to move
said piston and said carriage in intermittent mo
tion, and pneumatic means supplying air to said
piston in said cylinder to return said piston after
said hydraulic means have completed moving said
piston and said carriage.
'
3. In a. hydraulic indexing means for lathes
40 having a lathe bed and'a carriage slidably mount
may be regulated.
'
8. In an indexing mechanism of the class de
scribed having a lathe bed, ‘a carriage slidably
mounted on said lathe bed and cutters mounted
for movement on said carriage, hydraulic means 30
for moving said piston and said carriage in in
termittent motion of equal increments including.
a cylinder mounted on said lathe bed, a piston
mounted in said cylinder, means connecting said
piston and said carriage, a pump supplying equal
volumes of ?uid to said piston in said cylinder
at intervals timed to the movement of said cut
ters, means for adjusting the volume of ?uid de
livered by said pump to said cylinder to control
the size of the equal increments of movement of 40
said carriage, and pneumatic means for supply
ed thereon, a piston, a cylinder for said piston
mounted on said lathe bed, means connecting said a ing air to said piston in said cylinder to return
piston and said carriage, and hydraulic means said carriage, after movement by said hydraulic
supplying equal volumes of ?uid to said piston in
45 said cylinder to move said piston and said car
9. In an indexing mechanism of the class de
riage intermittently in equal increments. ,
scribed having a lathe bed, a carriage slidably
4. In a hydraulic indexing means for lathes mounted on said lathe bed and cutters mounted
having a lathe bed and a carriage slidably mount
for movement on said carriage, hydraulic means
ed thereon, a piston, a cylinder for said piston for moving said piston and said carriage in in
50 mounted on said lathe bed, means connecting said termittent motion of equal increments including
piston and said carriage, hydraulic means sup- ' a cylinder mounted on said lathe bed, a piston
plying equal volumes of ?uid to said piston in mounted in said cylinder, means connecting said
said cylinder to move said piston and said car
piston and said carriage, a pump supplying equal
riage in spaced intermittent motion of equal in
volumes of ?uid to said piston in-said cylinder
55 crements, and pneumatic means supplying air to
at intervals timed to the movement of said out
said piston in said cylinder to return said piston ters, and means for adjusting the length of the
and said carriage after said hydraulic means have stroke of said pump to adjust the volume of
completed moving said piston and said can-iage. ?uid supplied by said pump to said piston to
5. In an indexing mechanism of the class de
control the size of the equal increments of move
scribed having a lathe bed, a carriage slidably ment of said carriage.
mounted on said lathe bed and cutters mounted
10. In an indexing mechanism of the class de
for movement on said carriage, hydraulic means scribed having a lathe bed, a carriage slidably
for [moving said carriage in intermittent motion mounted von said lathe bed and cutters mounted
of equal increments in timed relation with the for movement on said carriage,,hydraulic means
65 movement of said cutters including a cylinder
for moving said piston and said carriage in in
means.
Y mounted on said lathe bed, a piston mounted in
said cylinder, means connecting said piston and
said carriage, and pump means supplying equal
volumes o1’ ?uid to said piston in said cylinder
70 1at intervals timed to the movement of said out
ers.
-
-
6. In an indexing mechanism of the class de
scribed having a lathe bed, a carriage slidably
mounted on said lathe bed andmcutters mounted
75 for movement on said carriage-bydrai?ic means
'
-
.
'
termittent motion of equal'increments including
45
-,
50
'
55
60
65
a cylinder mounted on said lathe bed, a piston
mounted in said cylinder, means connecting said
piston and said carriage, a pump supplying equal
volumes of ?uid to said piston in said cylinder at 70
intervals timed to the movementyof said cutters,
means for adjusting the length of stroke of said
pump to adjust the volume of ?uid supplied by
said pump to said piston'to control the size of
the equal increments of movement of said ca" 75
2,122,204
riage, and pneumatic means for supplying air
to said piston in said cylinder to return said car
riage after movement of said carriage by said
hydraulic means.
.
.
.
7
carriage and cutters of a jar ring lathe in inter- '
mittent movement of equal increments including
a lathe bed, a head and a tail stock mounted on '
said bed, a motor driving said head stock, a car
11. In a lathe having a lathe bed, a carriage riage ‘slidably engaging said bed, and rocking cut
slidably mounted on said lathe bed, and moving ters mounted for rocking movementjn said car.
-cutters mounted on said carriage, hydraulic riage and rocked by said motor, ,a piston driving
means for moving said carriage and said cutters said carriage and a pump of adjustable length of
in intermittent movement of equal increments stroke driven by said motor supplying equal vol
umes of ?uid adjustable in size by adjustment of
1O including a cylinder, a piston in said cylinder
connected to said carriage and means supplying the length of stroke to said piston at intervals
equal volumes of ?uid to said piston at spaced . timed to the movement of said cutters.
18. In a hydraulic mechanism for moving the
intervals timed to the movement of said cutters.
12. In a lathe having a lathe bed, a carriage carriage and cutters of a jar ring lathe ininter
mounted on said lathe bed, and. moving 'mittent movement of equal‘ increments including
15, slidably
cutters mounted on said carriage, hydraulic a lathe bed, a head and a tail stock mounted on
means for moving said carriage and said cutters said bed, a motor driving said head stock, a car
in intermittent movement'of equal increments riage slidably engaging said bed, and rocking out
ters mounted for rocmng movement in said car
riage and rocked by said motor, a piston driving 20
said carriage, a pump of adjustable length ‘of
. including a cylinder and piston operatively en
gaging said carriage, means supplying equal
volumes of fluid to said‘piston at intervals timed
stroke driven by said motor supplying equal and ~
adjustable volumes oi.’ ?uid to said piston at inter- .
to the movement of said cutters, and pneumatic
means supplying air to saidpiston to return said
vals timed to the movement of said cutters, and
pneumatic means supplying air to said piston to 25
return said piston and carriage after completion
of movement by said hydraulic means.
‘ carriage after movement by said hydraulic means.
13. In a lathe having a lathe bed, a head stock,
a tail stock, a motor driving said head stock,
a carriage slidably engaging said lathe bed ‘and
_ 19. In a hydraulic and pneumatic piston for
rocking cutters mounted on said carriage and
‘rocked by said motor, hydraulic means for mov-_ moving the carriage of a jar ring lathe in inter 30
mittent movement of equal increments, a cylinder,
30 ing said carriage and said cutters in intermit
tent movement of equal increments including a‘ ‘a piston in said cylinder, a hollow piston rod' con
piston connected to said carriage and means nected to said piston and closed at its other end
driven by said motor supplying equal volumes of by a vented closure secured to said carriage, a
?uid to said piston at intervals timed to the gland nut surrounding said piston-rod and clos
ing one vend of said cylinder, an air seal pack ad 85
movement of said cutters.
‘
' .
35
jacent the inner face of said gland nutand ex- -
14. In a lathe having a lathe bed, a head stock,
a tail stock, a motor driving said head stock, a
tending in part down said piston rod, a sleeve
member surrounding said piston rod and overly
‘carriage slidably engaging said lathe bed and
rocking cutters mounted on said carriage and
ing said portion of said air seal pack on said
movement of equal increments including a piston
‘adjacent, said air seal pack and opening. into said
cylinder, an air inlet and exhaust adjacent the
piston .rod and abutting a shoulder in said cyl 40
40 rocked by said motor, hydraulic means for mov- ' inder, passages in said‘sleeve member opening
ing said carriage and said cutters in intermittent
- connected to said carriage, means driven by said
inner end oi’ said sleeve member, said piston com
motor supplying equal volumes of fluid to said
prising a centrally chambered piston member se 45
cured to said piston rod, a‘ guide and support
45 piston at intervals timed to the movement of said
cutters, and pneumatic means supplying air to
said piston to return said carriage and cutters
after movement by said hydraulic means.
15. In a hydraulic mechanism for moving the‘
carriage and cutters of a jar ring lathe in inter
50
mittent movement of equal increments includ
ing a- lathe bed, a head and ‘tail stock mounted
member mounted on said chambered piston mem
ber extending axially in said cylinder, said guide
on said bed, a motor driving said head stock, a
carriage slidably engaging said bed, and rocking
member being centrally ‘bored a portion of its
length, and opening into said chambered piston
50'
member, a. second air seal pack mounted on said
guide member and overlapping said chambered
piston‘ member in contact with the walls of said
cylinder, passages in said chambered piston Them".
her opening adjacent said second air seal pack 55
carriage and rocked by said motor, a piston drive ‘and opening into said cylinder, a plate mounted
lng said carriage, and a pumpv driven by said on said guide member adjacent said second air
motor supplying equal volumes of ?uid to said seal pack and slidingly engaging said cylinder, a. - piston at intervals timed to the movement of said second chambered piston member mounted on 60
said guide member adjacent said plate, passages
cutters. 16. In a hydraulic mechanism for moving-the in said second chambered piston member adja
cent said plate and extending from adjacent 811d
carriage and cutters of a jar ring lathe in inter
mittent movement of equal increments including cylinder to the chamber of said second chambered
55 cutters mounted for rocking movement'in said
a lathe bed, a head and a tail stock mounted on
piston member, a third air‘seal pack mounted
65 said bed, a motor ‘driving said head stock, a car
riage slidably engaging said bed, and rocking cut-'
ters mounted for rocking movement in said car
riage and rocked by said motor, a piston driving
adjacent said air seal pack-and opening into the
said carriage, a pump driven by'said motor sup
on said guide member and overlapping said'sec 65
0nd piston member in contact. with said cylinder,
passages'ln said second piston member opening
chamber‘ of said second chambered piston mem
ber, passages in said guide. member‘ opening into
70 plyin'g equal volumes of ?uid to said piston at the chamber of said second piston member and
intervals timed to the movement-oi said cutters. opening into the centrally bored portion of said
~ * and pneumatic means supplying air to said piston
guide member, a secondv plate mounted on said‘
to'retum said piston and carriage alter comple
guide member-adlacentsaidthird air- seal pack
tion of movement by said hydraulic means.
75
17. In a hydraulic mechanism for mlovingv the _
and slidingly engaging said cylinder,'an oil seal
- » - _- ' mam
pack mounted on said guide member adjacent
said second‘ plate, a third piston ‘membermounted
on said guide member recessed to receive an over-r
lapped portion of said oil seal pack in contact with
the cylinder, passages in said third piston mem
ber opening adjacent said oil seal pack ‘and open
‘ing into said cylinder, a cover closing the op
posite end of said cylinder, and an oil inlet and
exhaust mounted in said cover.
10
20. In a lathe having a lathe bed, a carriage
slidablymounted on said lathe bed, and moving
cutters mounted on said carriage, hydraulic means
for'moving said carriage and said cutters in in
termittent movement of equal increments includ- v
'ing ‘a ‘cylinder and‘piSton operativély engaging
said carriage,v means supplying equal volumes of
?uid to said piston at intervals timed to the
movement of said cutters, pneumatic means sup
plying air, to said piston to return said carriage
after movement by said hydraulic means, and a
control means common to said hydraulic and said
pneumatic means allowing air to exhaust from
said cylinder when saidlpiston is moved by said
hydraulic means and allowing ?uid to exhaust 10
from said cylinder when said piston is moved by
said pneumatic means.
HENRY GORA.
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