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Dec- 1'7, 1946-
2,412,924
H. E. STOVER
APPARATUS FOR SEALING CONTAINERS
Original Filed Aug. 2, 1940
2 Sheets-Sheet 1
VENTOR
Harry E Sfover
BYWI
i
a
a
A TTORNE Y5
Patented Dec. 17, 1946
UNITED STATES PATENT OFFICE '
2,412,924
APPARATUS FOR SEALING CONTAINERS
Harry E. Stover, Leonia, N. J ., assignor to Anchor
Hocking Glass Corporation, Lancaster, Ohio, a
corporation of Delaware
‘
.
,
Original application August ‘2, 1940, Serial No.
349,655. Divided and this application April 17,
1943, Serial No. 483,444
1 Claim. (Cl. 226—80)
1
My invention relates to an apparatus for seal
ing containers. It has to do, more particularly,
with an apparatus for applying closures to con
tainers, such as food containers and including
jars, bottles, cans, et cetera, and sealing them
on the containers and for producing a partial
2
,.
neath the sealing head and will, consequently,
actuate the sealing head. To return the trigger
to its original position, I provide a small ?uid
vacuum in the upper ends of the containers.
This application is a division of my copending
actuated unit which is mechanically connected to
the trigger and which is actuated by the ?rst
named ?uid-actuated unit.
The preferred embodiment of my invention is
- illustrated in the accompanying drawings, where
application Serial No. 349,655, .?led August 2,
- in similar characters of reference designate cor
1940, and which issued as Patent No. 2,321,779 10 responding parts and wherein:
Figure 1 is a longitudinal vertical sectional
on June 15, 1943.
view illustrating the sealing head unit and its
One of the objects of my invention is to pro
operating mechanism.
vide a sealing machine including a movable seal
Figure 2 is a vertical sectional view of'the valve
ing unit. wherein novel control means is provided
for actuating said unit,said control means being 15 which is used for controlling operation of the
positive and ei?cient in operation.
Another object of my invention is to provide
sealing head, the‘valve being shown in its normal
control means for actuating the sealing unit
which is of such a nature that it will be actuated
Figure 3 is a similar view but showing the valve
position.
a
in its operative position. it
-
_
'7
whenever a container with a cap thereon is moved 20 ’ ‘This application relates to the control mecha
nism for actuating the sealing head. This case
into association with the sealing unit.
,
was co-pending with the application of William
My invention is embodied in an apparatus for
D. Bell on Apparatus for sealing containers, Ser.
applying closures to and sealing them on various
No. 314,299, which recently issued as Patent No.
containers such as jars, bottles, cans, et cetera.
The apparatus is in the form of a compact struc 25 2,352,763 on July 4,1944. Applicant wishes to
direct the attention to this issued patent for a de
ture which may be disposed in superimposed re
scription of the sealing head and conveyer which
lationship to a continuously moving conveyer
are adequately described in that patent. It is
upon which the ?lled containers are placed at
believed, however, unnecessary to give a complete
random. The conveyer preferably has means
associated therewith for centering and maintain
30
tainers moved into association therewith by the
conveyer, Directly adjacent the cap-feeding and
applying unit, a sealing head is provided. The
conveyer moves the containers, with caps loosely
applied thereto, into association with this sealing
head. The sealing head is spaced Slightly above
the upper ends of the containers and a main
?uid-actuated unit is associated therewith for
forcing it downwardly whenever a container, hav
ing a cap properly associated therewith, moves
beneath the sealing head, I provide a positive
and ef?cient control arrangement for starting
description of this previously patented machine
at this time. The conveyer unit I the cap-feed
ing and applying unit are clearly described in said
ing the containers centered on this conveyer.
The apparatus may include a cap-feeding and
applying unit, where caps or other closures are
loosely positioned on the upper ends of the con
patent. The following description is directed‘ to
the control mechanism for actuating the sealing
113 ,VI head 26.
The actuating mechanism for the sealing head
26 is normally in the condition illustrated in Fig
ure 1. The plunger 40 will be held in its lower
most position by the spring 42. The plunger 21
44 will be held in its uppermost ‘position by the
spring 31. The toggle joint 49 will be in the con
dition illustrated, that is, with its links at an
angle to, each other, It will be apparent that if
the piston rod 56 is moved to the right (Figure 1),
: the toggle joint 49 will ‘be straightened out. This
will force the plunger 21 downwardly against-the
action of spring 3'! and, consequently, will force
the sealing head__26 downwardly. 'As soon asthe
‘operation of the sealing head at the proper time.
The control arrangement includes a main con
piston rod 56 moves to the left, the spring 31 will
trol valve for controlling the supply of ?uid to
the ?uid-actuated unit which moves the sealing 550 returnmember 26 to its uppermost position. The
spring-pressed plunger 48 is provided to limit the
head. It also includes a pilot valve for control
downward force exerted on the plunger 2‘! tea
ling the operation of the main valve. The pilot
predetermined maximum, so as to prevent in
valve is actuated by means of a trigger, This
jury to the container being sealed. This prede
trigger is engaged by a cap. ona container when
the container is moved into sealing position be
55
termined maximum is determined _by the initial
2,412,924
3
4
ited movement of the piston rod therein. A com
adjustment of the distance between the lower
pression spring TI is disposed within the bore 68
end of collar 39 and the ?ange 4|, which varies
in surrounding relationship to the rod 55. One
the downward force exerted by the spring 42.
end of the spring bears against the cap l2 and
When the downward force created by the toggle
49 on the plunger 21 reaches the predetermined ,3 is disposed in a recess ‘I3 formed therein while
‘the ‘opposite end bears against a ?anged collar
maximum, the plunger'48 will be‘ forced upwardly
against the resistance of the spring 42. Conse
‘I8, which is formed integral with member ‘I8.
quently, the pressure exerted on plunger 21 will
It will be apparent that this spring normally tends
not be excessive. It will be apparent that during
.to force the piston 69 to the left so that the boss
operation of the toggle joint, the piston rod 56 II) ‘Itib contacts with the head ‘II. Consequently,
will move vertically to a limited extent. Adjust
this will also keep the toggle joint 49 in the con
ing the plunger unit vertically by‘means of the
dition, illustrated in Figure l.
member 39, as previously described, will vary the
:I preferablyv employ steam as the ?uid for mov
extent of the downward movement of the plunger
ingthe piston '89 ‘from the position indicated in
21 and, consequently, of the member26. Thus, ,15 Figure -1. The housing 59a has a steam jacket
the extent of the downward movement .ofmem
80 I formed in lthe wall thereof and extending
ber 26 may be readily adjusted,
'
:completely around the housing. This jacket
For controlling movement of the piston rod 56, '
I provide the mechanism now to be described.
serves to prevent or decrease condensation of the
This mechanism comprises a ?uid-operated cyl~ 20
The bore 6| has a piston type valve 32 mounted
for axial‘movement therein,'as shown lbest in
inder and piston unit 59. Thus unit 59 includes a
‘housing ‘5911 which hasa large cylinder bore‘ 68
steam within the housing 59a.
‘Figures 1; 2 and 3. This piston valve 82 is adapted
.formed in its upper portion ‘and a small cylinder
to control the supply of steam to and exhaust
bore-BI formedin its lower portion. The bores
of steam from the cylinder bore 68. Intermediate
~6|! and‘ BI arehorizontally disposed and are par 25 .its ends the piston ‘valve 82 is provided with an
allel with each other. The housing 59a ismount
annular chamber 83' and atlits extreme ends the
ed on the ‘upper surface of a plate directly adja
piston valve v82 is provided with projecting por
cent the housing 23. His provided‘ with a flat
tions 84. vAn 'exhaust'and inlet opening 85 is
‘tened lower surface which rests on the upper sur
provided in'thewall of the bore GI intermediate
face of a plate. To secure the housing 59a to 30 the ends thereof and communicateswith a longi
the housing 23, the-housing '23 is provided with
tudinal passageway 81. Opening 85 is always in
laterally projecting lugs, through which bolts
communication with'annular chamber ~83. The
pass. The bolts have their‘ends threaded into
passageway‘i?l has one end communicating with
‘the'housing 59a'and spacers are provided on the
:an opening 88 which leads‘ into the cylinder bore
bolts. .Atlarge bolt 65 (Figure 1) is passed hori 35 “50 adjacent the head "I I. The opposite end of the
zontally'throug-h an upstanding lug 66 on the
passageway 81 communicates with an opening '89
housing 58a and has its outer end threaded into
which leads through the wall of the bore 6|}. The
a boss on the housing portion 23, as at'61. A
opening "89 communicates with a longitudinally
spacer is provided on the bolt65. Thus, it will be
extending groove 590 forme’d'in'the periphery of
apparent that the housing 59a is held ?rmly in 40 the piston '69. -When the piston 69 is in the posi
position.
tion indicated in Figure 8, the opening 82 will not
The bore 68 has a hollow piston 69 .slidably
be in communication with a passageway 89a,
-mounted therein. This cylinder 69 has a member
‘formed in the 'wall of bore’68, but when the piston
-‘|0 disposedtherewithin which is secured to its
'69 moves to the position indicated in Figure 3,
end wall by means of bolts 69a. The member ‘ID 45 the groove'90 will be in such a position that it
.hasa reducedextension 10a which extends to the
will connect opening '89 to passageway ‘89a. The
-.left (Figure 1) through the end of the piston and
outer-end of passageway 89a is uncovered-with
through a boss 10!) :formed thereon. .This boss
the piston"69 as in Figure 2.
18b will normally contact with the :end of the
'At‘spacedpoints in the wall of the bore 6| an
‘bore't? to keep the piston spacedfrom the ‘head 50 inletopening ‘9| and an outlet opening 9|a are
7 ‘II disposed at theleft‘hand endof ‘housing 59a.
formed. "The inlet opening 9| is connected to an
The portion ‘Illa- extends through the head‘? I 'and
opening '92 leading from the steam jacket 80.
:into5ath0using1lawhi0h issecured to the head
‘The opening 9Ia leads to the atmosphere. With
\‘II. Acushionmember ‘Nb of rubber surrounds
~piston valve 82 in the'position shown in Figure 2,
portion 18a and abuts the head ‘I I. A metal'collar 55 the'annular chamber 83 is in communication with
'IIci holds the member' ‘III? in position by contact
exhaust opening 9|a and piston 82 covers opening
ing with‘ a shoulder "IId formed on‘ the inner sur
9|. With piston -82 in the position indicated in
face of housing "Ha. The end of the portion ‘Illa
Figure3, chamber'83 is in communication with
.iszthreaded‘to receive nuts 1Ie. which may be
inlet opening 9| and exhaust opening am is cov
adjusted to various positions therealong. The 60 ered‘by'the piston.
nuts ‘H e will contact with member ‘II 0 when the
'With thepiston 82 in the position indicated in
‘piston ‘69 moves to‘the right. They serve as an
Figure 2, steam will exhaust from the left hand
adjustable stop ‘for limiting such movement to
‘end of the cylinder bore 60, through opening 88,
‘prevent ‘the links ‘58 and 52*of the toggle from
passage 81, opening 85, annular chamber 83, and
moving past the axes of plungers' 21 and 40. The 65 exhaust opening 9Ia. The piston 82, when in the
member‘llb serves as a cushion to reduce the
vposition indicated in‘Figure2, will cover the inlet
shock of the‘ impact.
opening 9| . Consequently, steam will not be sup
A‘capi‘IZ is bolted to the other end of the hous
"plied to the cylinder bore‘ 68.
. V
ing 59a and‘ is provided with an opening "I4. The
For controlling movement of the piston valve
‘piston rod-.56 passes inwardly through this open 70 82, I ‘provide a valve mounted in an extension 94
:ing into the'interiorlof the bore 50. The imier
‘(Figures 2 and 3) of the housing 59a. A cylin
:end of 'the'piston rOdSB-is?attened and is piv
drical bore 96 is formed in the main,portion of
'otally "connected at ‘I5 to a bifurcated‘ lug ‘I6
‘the extension '94. The bore 196 receives a piston
‘formed. on the member v‘Ill. LTheopening "I4'is
97, which is mounted for axial movement therein.
largerithan the piston rod‘ “so as to ‘permit lim lii‘The outer end "of the piston‘ carries "a pair or
2,412,924
5
spaced collars 98, the inner one of which serves
to limit inward movement of the piston. The
portion of the piston 91 which is disposed in the
bore 96 has a large annular chamber 99 formed
therein and a small annular chamber I00 formed
therein in axial spaced relationship. A steam
passageway I03 connects the steam chamber 89
to the annular chamber-'99 formed in the piston
91. An exhaust passageway I04 connects the left
hand end of bore 96>to the-atmosphere. Spaced
passageways I05 and I06 communicate with the
bore 96 and, when the piston 91is in the position
indicated in Figure 2, the end I01 of the piston
When the piston 69 moves to the right suffi
ciently, the opening 89 communicates with the
passageway 89a. This will permit steam to ?ow
from passage 81 into passageway 89a and into the
bore 96a which is formed in the upper portion of
extension 94. This will force the piston 91a,
mounted in bore 96a, from-the position indicated
in Figure 3, into the position indicatedin Figure 2.
'Movement of the piston, 91a“ to the‘ right (Figure
2)’ is adapted to move piston 91 to the left to re
.turn it to its original'position. For this purpose,
a short lever I I5a is provided which has its upper
end in engagement with the outer end of piston
covers the end of passageway I05 while the end
9111, as at 9112, and has a yoke I I5b on its lower
of passageway I06 communicates with the cham 15 end which straddles piston 91 between collars 98.
ber 99 in the piston. These passageways I05 and
The lever I [5a is pivoted to the outer end of a pin
I06 are connected to a passageway I98 which is
II1a (Figure 1) which is mounted in extension
connected to the left hand end of the cylinder
94 for axial adjustment and is held in adjusted
bore 6|. Axially spaced passageways I09 and H0
position by a set screw which engages a ?at por
communicate with the bore 96 and, when the
tion of the pin to prevent rotating thereof. Thus,
piston 91 is in the position indicated in Figure 2,
when piston 91a is moved to the right, piston
the central portion III thereof covers the end
of passageway I09 and the passageway IIO com
municates with the annular chamber I00 of the
piston 91. The passageways I09 and I III are con
nected to a passageway II2 which is connected
to the right hand end of the bore 6I. An exhaust
passageway I04a leads from the right hand end
91 will be moved to the left. When piston 91 is
moved to the right, piston 91a is moved to the left.
The piston 91 must be moved to the right me
chanically by means of a lever II5. This will
move the piston 69 to the right, as described above.
However, as soon as the piston 69 moves suffi
ciently the piston 91 will be returned to its orig
of bore 96 to the atmosphere.
inal position by steam pressure, as described
It will be apparent that with the piston 91 in the 30 above. Thus, movement of the piston 91 to the
position indicated in Figure 2, steam will flow
right is controlled mechanically while movement
from the chamber 80‘, through the passageway
of the piston to the left is accomplished auto
I03, through annular chamber 99 of piston 91,
matically by steam pressure.
through passageways I06 and I08, to the left hand
For moving the piston 91 to the right, I pro
end of the bore BI, and will force the piston 82 to
vide the pivoted lever II5, as previously de
the right. At the same time, any steam in the
scribed. This lever has a yoke portion II6 on its
right hand end of the bore 6I will exhaust through
upper end which engages the piston 91 between
passageway II2, passageway IIO, annular cham
the collars 98, as shown best in Figures 1, 2 and 3.
ber I00 and exhaust passageway I04a. Thus, the
The lever H5 is pivoted to the bifurcated outer
40
inlet opening 9I will be covered by the piston 82,
end II1 of a plunger H8. The plunger H8 is dis
while the exhaust opening 9Ia will be uncovered.
posed for axial movement in a bore I20 formed
Consequently, steam from the left hand end of
in the housing extension 94. A compression
the cylinder bore 60 will exhaust through the
spring I2I is provided in the bore I20 for normally
opening 88, passageway 81, opening 85, chamber
forcing the plunger II8 to the left. A pin II8a
83 and exhaust opening 9I a. Thus, the spring 11
is disposed for axial movement in a tube I I9a dis
will be permitted to return the piston 69 to the
posed in ?xed position in a bore H9 in housing
position indicated in Figure 2.
portion 59a. One end of pin II8a engages the
However, if the piston 91 is moved to the right,
plunger I I8 while the other end thereof is en
as indicated in Figure 3, steam will be supplied to gaged by the inner end of a screw II8b threaded
the left hand end of the cylinder bore 60 to move 50 into a boss II9b formed on the cap 1I. It will be '
the piston 69 to the right. It will be apparent
that when the piston 91 is moved to the right,
steam will flow from the passageway I03, through
the annular chamber 99 in piston 91, through the
apparent that by rotating member I I 8b, the pivot
point for the lever H5 may be adjusted to the
right or to the left (Figure 1) .
The lower end of the lever I I5 is provided with
a ?nger portion I32 which is disposed adjacent
passageway I I0 having its end closed at this time
the edge of member 26 in alignment with a ver
by the portion I I I of the piston) to the right hand
tical slot I3I formed therein which is of su?icient
end of the bore 6I, which will cause the piston
width to permit movement of the lever thereinto,
82 to move to the left. At the same time, the
if necessary. The ?nger portion I32 ‘extends
steam in the left hand end of the bore 6| will 60 downwardly beyond the lower surface of the
exhaust through the passageway I08, through
member 26, when the member 26 is in its upper
passageway I05 (the end of passageway I06 being
most position. Adjustment of the plunger II8
closed by the end I01 of piston 91 at this time)
will move the lower end I32 of lever II5 into
through the left hand end of bore 96 and through
or out of slot I3I, to properly position it at the
passageway I04 to the atmosphere. When the
point where the edge of the cap will be disposed
piston 82 is moved to the position indicated in
when it is carried on the head 26 in sealing posi
Figure 3, the inlet opening 9I is uncovered while
tion. The proper position of ?nger I32 will vary
the exhaust opening 9 I a. is covered. Consequently,
with variations in diameters of the caps being
steam will flow from the chamber 80 through . used.
opening 92, through opening 9| into chamber 83,
It will be apparent from the above description
through opening 85, passage 81. and ?nally
that I have embodied novel control mechanism in
through opening 88, into the left hand end of the
a machine of the type described which is positive
and efficient in operation. This control mech
bore 60. This will force the (piston 69 to the
right.
anism is of such a nature that it will be actuated
passageway I09, through passageway II2 (the "
12,412,924
7
8
whenever'a’container with a cap thereon is moved
trolling the operation-of said last-namedvalve,
into association with the sealingunit. However, it
a control member for actuating said'second valve,
said control member being so disposed that‘itwlll
will notbe actuated if a container without-a, cap
moves into association with the sealing unit.
Having thus described my invention, what I
claim is:
Apparatus of the type described for sealing con
be engaged by a cap on a container positioned on
said support to move said second valve into opera
tive position, and means for returning said second
valve and said control member to their original
positions, said means comprising a ?uid-actuated
tainers, comprising a support for a container, a
unit, said last-named unit being mechanically
sealing member associated with said support, a
?uid-actuated unit for moving said sealing mem 10 connected to said control member.
HARRY E. STOVER.
her, a valve for controlling the supply of ?uid to
said ?uid-actuated unit, a second valve for con
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