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Патент USA US2119665

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June 7,1938.
Filed May 19,11934
_ -4` Sheets-Sheet l
|- :V
June 7, 1938.
Filed May V19, 1934
4 sheets-‘sheet 2
June 7, 1938’.
i f
2,119,665 ì
June 7, 1938
w. lcMAERoN
Filed’uay 19; 1934
`~4, Sheng-sheet 4
1 Patented June 7, -19138
William Cameron, Chicago, Ill., assigner to Cam
' eron Can Machinery Co., Ghicago, Ill., a cor
poration of Illinois
' Application MayAl-9, 1934, Serial No. 726,445
7 Claims. A(_(Jl. IIL-114)
This invention relates in _general to can clos
ing machines and the embodiment illustrated is
a vacuum pack machine of the double seaming
chine, and in the general assembly and combi
nation of mechanisms which enable the machine
to operate with great rapidity, high efliciency,
and with a minimum _of attention, the construc
Machines of this type heretofore-in use have 'tion being such that access to all the parts for ~
employed only a small vacuum chamberl at the inspectiona'nd repair purposes may- -be readily
double seaming station. 'I'he filled body with had.
the cap resting loosely thereon'was introduced
Other-objects and advantages of my invention
into this chamber and immediately moved into 'wilibe readily appreciated as the same become
l0 cooperative relation with the double seaming -better understood by reference to the following
mechanism, with the result that only an exceed
description when considered in connection -with
ingly small increment of time was allowed> for the accompanying drawings.
drawing a vacuum on the interior of the -can, and
Referring to the drawings:
the production of the desired vacuum within the
Fig. 1 is a longitudinal sectional view takenII can was further impeded by the fact that the cap on the line I-I of Flg.'4; „
even before being clamped against the body rested .
Fig. 2 is a fragmentary-elevation viewed from
mcre or less snugly thereon. Because of these the opposite side of the machine from Fig. 1, the
conditions the vacuum- produced in the can be
feed conveyor being removed;
g fore it was sealed varied in degree and was at
‘ Fig. 3-is a vertical sectional view taken on the
n best somewhat uncertain.
line 3-3 of Fig. 1;
_ One of the purposes and advantages of my
present invention is the provision of a large vac- '
uumchamber'in which the can bodies will be
subjected to vacuum for. a considerable period
of time before being sealed, an'd furthermore dur
in_g this period the can> end is maintained in
spaced relation 'with respect to the body so that
it will not impede or interfere withthe produc
.tion of a uniform vacuum of high degree _in every
can before it-is sealed.
Since can clonng machines of this character
are employed for closing cans containing liquid '
contents as well as dry contents, it is desirable
that the filled can be handled, beforeit is sealed,
very‘ gently as any sudden» movements or change
of direction will cause siopping- and spilling _of
the contents. Another purpose of my invention,
' therefore, is to bring the filled cans to the dou
ble seamlng station without shock, jar or sudden
movements, thereby obviating the slopping and
spilling which is highly objectionable.
Another obiectof _ the invention is to.,_provide
a machine which may operate continuously irre
spective of the regularity »with whichthe filled
can bodies arefed to the. machine, butwhich
will be automatically stopped- so as to prevent
damage in the event that any spider pocket is not
supplied with a can end before the pocket arrives
at the can body receiving position. My inven
tion contemplates also control mechanism which
precludes the feeding of a can end into a pocket
in which an end is-allfe'adyv contained.
Other features of my invention reside in im
Fig. 4 is a top plan view of the machine;
Fig. 5 is atransverse sectional view taken on . -
the line 5_5 of Fig. 4;
Fig.. 6 is a fragmentary sectional view taken
_on the line 8-6 of Fig. l;
- _
Fig. 7 is a similar view taken on'the line ’l-l
^ Fig. 8 is a similar fragmentary view taken on
the line .-8 of Fig. 1;
Fig.- 9 is a fragmentary sectional view taken-on 30
the line I--O of Fig. 6; '
Fig. 10 is a similar view
Il-Il of Fig. 6;
taken on' the line
Fig..11 is a diagrammatic view of the.~ electric
circuit including the mechanism-'for breaking the 1 36
circuit to stop the machine upon failure of the
.can end feeding mechanism; _
Fig. 12 is a transverse sectional view taken on
‘ the line |2-I2
_of Fig. 4, the vacuum- chamber-
Fig. 13 is a fragmentary vertical sectional view
taken’axially of the seamingvhead on the line
|3-|3 of Fig. 14;
Fig.` 14 is a horizontal sectional‘view»
the seaming head talçen on the line Il-ll of
Fig. 13; and
Fig. l5 is afragmentary vertical sectional view v
takenon the line lS-ii ofFlg. 14.
Referring _to the drawings more in detail and
with particular reference to Figs. 1_ and 4„ it will
be observed that the machine comprises gener
ally an elongated frame including a base portion
` I6 surmounted at one end by an upper portion ’
provements in the construction of _the dollilev - I'I upon the top 'of which the driving motor i0
I seaming mechanism and other parts of the ma
is mounted, the various operating mechanisms
of the machine being suitably mounted in or by the conveyor so that no abrupt stopping of
carried by this frame structure, as will be later -. the travel or abruptV change of direction is pro
duced which would tend to cause slopping or
explained more in detail.
The motor I8 constitutes the source of power spilling of ~the can contents. For the same rea
for operating the var-ious mechanisms and the son the chuck 53 is gradually moved upwardly
before the can body has> been fully positioned
lower end of its shaft is equipped with a driv
thereon. It willl be apparent, therefore, that
ing pinion I9 meshing with a gear 2| fixed, to
gether with a similar gear 22 of slightly smaller both the lateral transfer and the elevation of the
ñlled can body are accomplished simultaneously
diameter, upon a hub or sleeve 23 which is splined
and by a gradual movement so that the body
in a lateral and upwardly inclined curve
is journaled in upper and lower bearings 25 and
2B, respectively, carried by the frame structure, in its movement from the conveyor to. the tur
and is` provided at its lower end with a beveled ret, the entire movement being effected grad
pinion 21 meshing in driving relation with a ually and without agitation of the can.
The turret comprises a stationary plate 61v
beveled gear 28 in turn fixed upon the main drive
shaft 29 journaled in` and extending longitudi
nally of the supporting frame structure.
Intermediate its ends the vertical shaft 24 is
(Figs. 5 and 12) forming the bottom of the tur- _
ret above which mounted concentrically _there
with upon the upper end of the vertical shaft 68
equipped with a worm 3l which drives a worm ` is disposed the spider 31 provided with a series
20 wheel 32 fixed on the shaft 33 extending trans
versely ofthe machine and provided at its far
end, viewing Fig. 1, with a sprocket wheel over
which the endless conveyor 34 (Fig. 4) is trained
and by which the iilled can bodies 35 are fed in
succession to the left, viewing Fig. 4, from the
'machine by which the opertrtop, cans 'or bodies
have been filled. The conveyor is continuously
actuated, bringing the filled cans in succession
to a point opposite the pusher 36 by which the
30 bodies are delivered to the spider or turret 31 in
the following manner.
Referring now to Figs. 4 and 5, it will be- ob
served that the pusher 36 is carried by an arm
38 in turn supported upon a post 39 which is
35 carried at one end of a slide bar 4I adapted to
be reciprocated transversely of the machine. A
lguide bar 42 secured by bolts 43, or‘ otherwise,
to the bottom of> bar'4l> is guided in its recip
rocatory movements` in’a guide-way indicated
generally by reference character 44. Recipro
catory movements are imparted to the slide bar «
of radially arranged can body receiving recesses
or pockets 69. Immediately above the chuck
53 the plate 61 is cut away so `as to provide an
opening for the reception of the can bodies.> AS
a body is moved from the conveyor on to the
chuck 53 and is elevated by this chuck it enters
the opening in the plate 61 and one of the p’ock
ets 69, as illustrated in Fig. 12, so that upon ro
tation of the spider 31 the body is carried along
thereby off' from the chuck 53 onto the plate ~61.
The spider is rotated in a step by step move
ment by mechanism best illustrated in Figs. l
and 3. From these figures it will be'seen that the
spider 31 is bolted to a collar 1I fixed upon the
upper end of shaft 68 which carries intermediate
its ends the driven wheel 12A of a Geneva motion,
the driving member of which comprises a pin 13
carried by an arm 14 fixed on the shaft 49 so
that with each revolution of shaft 49 a partial
rotation of shaft 68 and the spider 31 carried
thereby is produced.
'I'he intermittent movement of the' spiderV takes
place in a counterclockwise direction, viewing
by a connecting rod 45 (Figs. 3 and 5) connected
with the bar by a bolt 46 and at its other end Figs. 4, 6 and 7, and the can bodies delivered to
to a crank pin 41 carried by a crank 48 fixed ‘the turret from the -feed-in conveyor are moved
>by the spider into the vacuum chamber where
45 upon the upper end of a, vertically disposed shaft
49. This shaft is provided at its lower end with the caps aredouble seamed on to the body in a
a beveled gear 5I (Fig. l) which is driven from manner which will be later explained.
a companion gear 52 fixed on the horizontal spective pockets of the spider, each pocket has
drive shaft 29. At each revolution of- the shaft
been suppliedwith a can end adapted to be dou
50 49 a complete reciprocation of the lslide bar 4I
is effected to transfer a filledcan body laterally ble seamed on to the body. The mechanism for
supplying the spider pockets with ends is besi
from the conveyor 34 on to a lifting chuck be
neath the turret spider as Willnow be explained. illustrated in Figs. 1 and 4, from which »it will
In proximity to the conveyor and in the line of be observed that the ends, indicated by reference
pusher 36 is disposed a vertically reciprocable character 15, are stacked in a magazine above a
reciprocatory slide 16‘by which the ends are
chuck head 53 mounted upon the upper end of
transferred in succession from the magazine tc
a rod or post 54 adapted to reciprocate in suit
able bearings 55, the post being elevated at timed an aligned spider pocket. The details of 'the
intervals by the lever. 56 fulcrumed at- 51 and
v60 yieldingly actuated to elevate the chuck by a
spring 58. The lever is positively actuated in the
opposite direction to lower the chuck by a cam
59 against which the cam follower 6I is held
by the spring 58, the: cam 59 being mounted upon
es a shaft 62 (Figs. 1 and 2) which is driven through
a chain 63 from the transverse shaft 64. .The
shaft 64 is driven from shaft 29 through a pair
Aof meshing beveled gears 65 and 66, respectively.
The cam 59 is designed to dispose the upper
70 face of the chuck 53 on aV level with -the con
veyor 34at the time the pusher 36 is being moved
` to the left,`viewing' Fig. 5, to slide the Añlled can
V'body 35 on to the chuck. The transfer of the
bodv'fromthe conveyor on to the chuck is ef
fected while the body is being carried forward
transfer slide and mechanism fcr separatingthf
can ends from the magazine may be of any well
known or preferred type and are not here illus
trated. It 'is suilicient for present purposes t(
state that the slide is reciprocated by means of f
lever 11 fulcrumed upon the frame structure a‘
18, which lever receives'its feeding movemen‘
from a. tractile spring 19 and is returned by a
cam 8| on the shaft 62. At each actuation o
slide 16 a can end is removed from the magazim
and transferred to a position beneath the mark
ing device 82 disposed above the path of trave
of the ends. The lower face of the marking- de
vice is equipped with a marking die and at thi
marking station the end is elevated by a chucl
carried by the upper end` of plunger 83 into mark
ingv engagement with the die. This plimger i
- v2,119,666
yieldingly held down by a spring 84 and is\ posi
tively- elevated by a lever 85 fulcrumed at 86 and
1 and >6) by which they are elevated into cooper
ative relation with the seaming head above. 'I'his
chuck, as will be seen from Fig. 1, is c_arried upon
the upper end of a lost motion stem comprising
the sleeve ||3 andthe rod ||4 having a pin and
actuated by a cam 81 also mounted on shaft 62.
At the next actuation of the slide 16, the marked
enely is transferred from the marking station to
the spider and another end from the magazine
slot connection ||5 with =an interposed spring .
replaces the- one » removed from the marking
H6, the yieldability of which protects the bodies
and .the mechanism against injury from excessive
From Figs. 6 and 12 it will be apparent that thet upward movement of the stem,and,at the same
upper end of each spider pocket _69 is shaped to time insures a snug engagement with the seaming
provide a pair of supporting guides 88 forming a head. -The rod ||4 is actuated by a cam follower
supporting shoulder upon which an end is sup
ported above and in alignment with a can'body.
In order to hold the positioned ends against dis
placement from alignment with their correspond
ing bodies, spring pressed pivoted dogs 89 are
employed, one at each side of the'supporting
shoulder, the innei` ends of these dogs being urged
toward each otherV by springs 9| (Figs. 6 and 9)
to -press against the can end outwardly of its
centèr, so as to urge the end into the pocket and
retain it in that position. Beneath each shoul
der 88 the socket is shaped to provide> an up
wardly tapered annular surface 92 which, as the
25 can body is elevated, rounds up the body and cen
ters it with respect to` the positioned end.
||1 which is operated from a face cam ||8
mounted on the shaft 29. The chuck || 2 has a
close sliding fit with the surrounding guide walls
so as to form a substantially air-tight seal around
the chuck. During the travel of _the can body
within the vacuum chamber to the chuck >| |2 and
during the elevation of the chuck, the body and
its contents are subjected to the action of a vac
uum so that when the cap is double seamed on
to the body,’forming a hermetic seal therefor,
the contents of the can are sealed up under a sub
stantial vacuum. Deterioration- of the can con
tents resulting from the presence of air inthe can
is accordingly precluded.
` When the'body is elevated by the chuck H2,
As the can bodies with their superposed ends _the upper edge of the body engages and carries
Vare moved by- the spider away from the chuck upwardly with it‘the superposed can end 15, the
53, they enter .the vacuum chamber in which the body and end being snugly clamped together be
30 airis exhausted from the cans before the ends are i tween the seaming chuc ||9 and the lifting 30
double seamed thereon, as will presently appear. chuck || 2, the spring || 6 serving to~insure such
'I'he vacuum chamber is formedby an air-tight clamping action without injury to the can or end.
housing partially encompassing -the spider 31. A
The seaming chuck is carried upon the lower
segment 93 olf this housing overlies the spider and end of a tube or sleeve |2| suspended within the
is urged into hermetic sealing relation therewith vertical guide bearing |22. 'I'his sleeve is prof
`by springs 94 which press the- segment -down ` vided near its lower end with an annular shoulder 35
against the spider. A removable segment 95 of I 23 supporting the lower race |24 of a ball bearing,
the housing abuts the segment 93 to which it is the upper race >|25 of -which supports the sleeve
clamped by bolts 96.` Upon removal of these |26 surrounding the sleeve or tube |2`|. The
bolts the segment 95 may be removed rto permit seaming head block |21~is securely attached by
access to the enclosed seaming head. The bot bolts, not shown, to the sleeve |26 so as to be
tom of the vacuum chamber is formed by the rotated thereby. 'I'he sleeve |26 itself is.,
turret base plate 61 which is urged'against the rotated by a gear |28 keyed to its uppery end_andv
lower face .of the spider by springs 91 (Fig. 1), meshing with the driving gear 2|.
one of which is-shown as being interposedbe
tween the lower face of the plate and an- arm 98
adjustably supported by a collar 99 threaded
¿upon the upper end of the shaft bearing >|0|. A
stud |02 carried by the arm cooperates with a
50 socket in the plate to hold the plate against
A second sleeve |29 carried by and rotatable 45
relatively to the sleeve |26 is connected at its '
upper end to and is rotated with a- gear |3| which
meshes with and is driven by the drive gear 22.
The lower end of sleeve |29 is outwardly flanged
and shaped to provide a cam |32 which actuates
the ñnal seaming rollers and a second rcam |33
ñxed to the sleeve |29 serves to actuate the pre-„
Outside the perimeter of the 'spider the lower
portion of the vacuum chamber is formed by a 'liminary seaming rollersin a manner presently
stationary segment |03 against which the re
55 movable segment 95 is urged into sealing relation
.The head block |21 carries a pair of- opposite 55
by springs |04, one of which is illustrated in Fig. disposed parallel fulcrum pinsA |34 upon which the
1. A packing or seal ring |05 is interposed be
arms .|35 are respectively fulcrumed.A Each. of
tween the springs 94 and |04 and the tops of the « these arms carries at itsvlower end a primary
chamber` segments. 93 and 95 to insure an air seaming roll |36 adapted to> cooperate with the .
seal at the top of the chamber. Vacuum is ap
chuck ||9 in performing the preliminary seaming
plied to the chamber through a pipe |06 con operation, and at its upper epd a rotatable cam
nected with a conveniently located vacuum pump- follower |31 engaging the face of the cam |33 by
(not shown). 'I‘he vacuum chamber as a whole which the arms |35 are rocked on their fulcrums
is urged'i'n sealing relation with the periphery of ` to move the seaming rolls |36 kinto operative rela
the spider by springs |01 actingagainst plungers ' tion to the chuck H9. The expansion springs
|08 (Fig. 7) engaged with projections |09 from _|39 interposed between the'lower portion of the 65
the chamber wall. .The plungers also serve as ` arm and the block |21 exert an outward thrust
latches to hold the chamber in position. By re-'> upon these arms in opposition to the thrust ex
tracting these latches to inoperative position, erted by the cam |33.
70 the chamber is released -for removal if necessary.
'I‘hese latches, as _will be apparent, are carried by
an upright portion ||| of the frame structure.
As Vthe can bodies with their superposed ends
The head block |21 carries also a second pair 70
of oppositely disposed parallel fulcrum pins |39
upon which the arms |4| carrying the final seam
_ing rollers |42 are fulcrumed. The upper- end `
'are moved in succession into the vac'uum-chamf ~ ofeac'h of thesev arms is provided with a cam
15 ber, they are brought over the chuck ||2 (Figs.
follower» |43 which is maintained in contact with
` 2,119,665
the cam |32 by an expansion spring |44 similar
to the springs |33. In order to provide for flex
ibility in the arms sufficient to prevent injury to
the can bodies and caps, which might be produced
by excessive pressure of the final seaming rollers
|42', arms |4| are transversely cut as indicated at
|45 (Fig. 13) and slight yieldability between the
two thus separated portions of the arms is af
|83 fixed to the slide bar 4| which, as _previously
explained, also carries the pusher 33. Upon
movement of this slide bar to the left viewing
Fig. 5, not only will a can body be transferred by
the pusher 33 from the conveyor 84 on to the
chuck 53 as previously explained but simultane-l
ously a closed can will be transferred from the
chuck |62 on to an adjacent delivery conveyor
forded by a strong expansion spring |46 inter- ' >I1|i which, as shown in Fig. 4, conveys the cans
to the delivery end of the machine. The chuck 10
10 posed between lateral extensions of the arms |41
lowered in suitable timed relation by an ordinaryl
|49 on the connecting bolt |5I.
cam device, not shown.
In operation the head block carrying the seam
15 ing rollers is constantly revolved at a high rate
of speed by the gears 2| and |28, while the sleeve
|23 carrying the cams |32 and |33 is continuously
revolved at a somewhat slower speed by the gears
cams |32 and |33 are such that the preliminary
seaming rollers are moved toward the chuck ||3
to perform the preliminary seaming operation,
whereupon these rollers are withdrawn and the
final seaming rolle'rs |42 are brought into oper
ation to complete the double seaming of the cap
on to the body.
When the can has been closed under vacuum
in the manner described, the chuck ||2 is lowered
into the plane of the bottom plate 31 of the tur
ret. To'insure that the end will be freed from
the chuck IIS, a pusher or knock-out head |52
is carried in the ~chuck | I9 by the lower end of a
rod |53 which receives a downward thrust to free
the can end from the chuck simultaneously with
the lowering of the chuck ||2. This movement
of the knock-out rod |53 is effected by a lever |54
connected at |55 (Fig. 1) with the knock-out rod
and fulcrumed at |53 upon the machine frame.
The lever is oscillated by va. rod |51 extending
40 downwardly through the hollow shaft 24 and pro
vided at its lower end with a reciprocating head
straddling the shaft 23 and carrying a laterally
projecting cam follower |58 which travels in the
cam race |59 of a face cam |6| keyed to the
shaft 23.
Since the ñlled can bodies may not be fed tov
the machine with regularity and since the ma
chine as a whole, including the turret spider, is
continuously operated, it frequently happens that
a spider pocket supplied with a can end but with
The timing and the contour of the , no can body enters the vacuum chamber. In that
22 and |3|.
' -20
|82 is carried upon a post |31 which is raised and
and |48. Adjustability of the parts> to a ñne de
gree of accuracy is aiîorded by the. adjustable nut
event', no body being positioned upon the chuck
H2, the elevation of this chuck will not displace
the can end from its position in the spider and
the seaming rolls will operate idly. 'The can' end,
therefore, is carried out of the vacuum chamber
by the spider and continues to travel around with
the spider. When this pocket already supplied
with a can end reaches a‘ position> in alignment
with the can end feeding mechanism where it
would normally be supplied with an end, provi.
sion is made to preclude the delivery of- another
end to this already supplied pocket or otherwise
obviously damaging results would ensue.
With <
this end in view I have provided mechanism for
rendering the can end feed inoperative whenever
a spider pocket already containing an fend is
brought into cooperative relation with the can
end feeding mechanism.
Viewing Figs. 1 and 4, it will be observed that,
as each spider pocket reaches a position immedi
ately preceding that in which a can end would
normally be delivered to it. a detector compris
ing a feeler finger |83 carried by an _arm |83
mounted upon the upper end of a reciprocatory
rod |83 is moved downwardly into the pocket. I
Thismovement is effected by a spring |1| which 45
When the chuck ||2 has been lowered into the
plane of the base plate 31 of the turret, the closed
can is moved by two successive movements of the
pulls downwardly upon that end of a lever |12
spider into a position over a vertically reciproca
|13 and is equipped with a cam‘follower |14
which rides upon a cam.|15. Beyond its fulcrum
this lever is extended as shown at |18 into the
ble chuck |32 (Figs. 6, 7 and 12) which at such
60 time is in its uppermost position in alignment
with the plate 31 which is provided with an open
- ing |83 for the reception of the chuck similar to
the opening on the opposite side for _the reception
which is attached to the lower end of rod |38.
The lever is fulcrumed on the frame structure at , '
path of an abutment |11 carried bythe cap feed '
slide operating lever 11.
If, as would normally happen, the feeler `finger
encounters no cap in the spider socket, the lever 55
been positioned upon the chuck |62, this chuck is |12 is permitted by its cam to be 'rocked in a
counterclockwise direction, viewing Fig. 1, sum
lowered into the position shown in Fig. 12, there
by lowering the body into position to be engaged ciently low to clear the extension in the path of
by a pusher |64 by which the body is pushed _hori- _ the abutment' |11, In that event a normal cap
‘feeding operation will be performed. Should,
60 zontally out of the turret.
It should be mentioned that for the purpose of however, the feeler finger |33 contact a cap in“
the spider pocket, downward movement ofthe
insuring propér centering of the body and super
posed end with respect to the seaming chuck ||3 rod and consequently counterclockwise move
when the body and end are elevated into seaming
position by the chuck ||2, the lower face of the
65 head block- |21 is' provided between the circum
ment of the lever |12 is arrested sothat the ex
tension |13 is retained in the pathcf' the abut
ment |11 whereby a. feeding movement of this
ferentially spaced seaming rolls with arcuatei lever under the influence of spring _13 ispreclud
guide ribs |35 (Figs. 14` and 15) , the inner faces
of which are inclined or chamfered otI, as indi
70 cated at |63, to guide and center the cap and
body in proper cooperative relation to the seam
No end, therefore, is delivered to a spider
pocket in which an end is already positioned.
The machine of this invention also makes pro 10
vision for assurance against the possibility 01E-aÀ
can body being ‘delivered into the turret without
Returning now to the delivery of the closed and a corresponding >end positioned in the turret for
' sealed can from the turret, the pusher |34 is car-1 assembly with’ the body. Should> any spider
ried, as will be apparent from Fig. -5, upon a post pocket fail to be supplied with a can end, ‘which
ing chuck- ||3.
2,119,665 might result from failure of the supply of ends in chine is automatically controlled so as to prevent
the magazine or from failure of the can end feed
the feeding of a can end into a spider pocket'4
ing mechanism -to properly operate, and should which already contains an end, and also to pre
this pocket receive a filled can body and should vent the entrance of a spider pocket into the
this body without a corresponding end be de
vacuum chamber unless it is supplied-with a can
livered to the double seaming station, unfortu
end. The machine is accordingly capable of op
nate results would ensue. Manifestly if a filled erating continuously irrespective of whether can
body without any superposed end were elevated - bodies are conveyed continuously to it or not, but
into position to be operated upon by the seaming in the event of failure of a can end to .be posi
rolls, the can body would _be jammed and dis
tioned in a pocket the machine is immediately.
. torted‘ by these rolls, it could not be freed from
the seaming chuckby the knock-outdevice, and
In order that the operator may always be aware
a jam in the machine and also- considerable of the amount of vacuum being produced in the
spilling of the can contents in the vacuum cham-i .
15 ber would result.A To obviate such diiiìculties my vacuum chamber, this chamber is equipped with `
a. vacuum gauge 202 (Fig. 1) mounted at any con-1
machine has provision for automatically stop-- veniently visible position. In order that the ma
ping the machine as a whole whenever a spider
pocket is not supplied with a can end before
the entrance of that pocket into the vacuum
chine may be turned over by hand for test and
inspection purposes,- a hand wheel (not shown)
is mounted at> oneside’of the machine on the .
.projecting end of a shaft 203 (Fig. 1) upon which
aefemng now to Figs. 2, '4, and -11, it wm be' is fixed a worm 204 meshing with a worm wheel ' 20'
4observed that beyond the can end supplying sta
205 on the main vertical drive shaft 24.
tion a second detector comprising a feeler finger
The operation of the machine having been ex
|18 carried by an arm |19 mounted upon the plained in connection with the' foregoing descrip
upper end of a vertically reciprocable post is ar 'tion of -the parts, a brief résumé only of_'the
ranged with the feeler finger in vertical align
operation will be given.
ment with a spider socket. ' 'I‘he lower end of the
'I‘he ñlled can bodies are brought in in succes
post |8| is pivotally connected at |82 withv a. -sion by tlie continuously operating _feeding- con
lever |83 fulcrumed at |84 and provided with a veyor 34 from which they are transferred lat
30 cam follower |86 which is urged against its actu
erally by the pusher 36 on to the elevating> chuck- 30
ating cam |86 by a tractile spring |81. ~
h »
As the spider pockets are brought into posi
tion beneath the feeler finger |18, the contour
of the cam |86 permits the post |8| vand the de
tectorv carried thereby to be lowered by a spring
|81 into the pocket. If the pocket contains a
can end as it should, downward movement of
-the feeler finger is arrested by the can end and
the operation of the machine is permitted to con
tinue, the detector being lifted by _the cam |86
from engagement with the can end prior to the
next forward step of the turret spider.
Should there be no can end' in the pocket, how
ever, downward movement of the detector and
l 45' the lever |88 will continue, causing a thrust
-member |88 carried by the rod |89 suspended
from the lever |83 to engage and depress anv op
posed thrust member |9|, thereby opening an
electric circuit to cause the supply current to the
main driving motor I8 to be shut oif. The entire
53 by which they are lifted in succession into the
vacuum chamber where, after being subjected to
the vacuum therein, they are sealed by having
the can ends double seamed thereunto >by the
double seaming mechanism. From- the double v35
seaming -station they are conveyed outK of the
vacuum chamber to'a point where they are per
mitted to drop through an opening in the bot
tom plate of the turret, the lowering movement
.being controlled by the chuck |62 from which 40'
they are transferred by the pusher |64 on to the
delivery conveyor |66.
The spider turret pockets . '
are supplied in succession with can ends by the
can end feeding mechanism, the operation of
which is temporarily stopped whenever a pocket
which-already contains a can end is -brought into
registration with the feed mechanism.
- Should a pocketvfail -to be supplied lwith a can `
end, this fact is automatically determined by the
machine which is immediately shut oil.Iv in that
machine is thus stopped so that the operator may . event so as >to preclude the entrance of a can 50
remedy the defect by` manually inserting a can body into the vacuum chamber unless a'corre- '
end in the empty pocket before the machine is
again started.
The control of the main motor by the detector
sponding can end is in position to be double
seamed on to the bottom.
-The details of construction illustrated and de
may be eñected through _any suitable arrange-- ‘ scribed are obviously capable of Jvarious modi
ment, but in Fig. 11 I have illustrated diagram
ñcations without departing from the spi'rit of
matically one suitable arrangement for this pur
the invention as defined in the following claims.
pose. In this figure the main supply> circuit to
I claim:
the motor I8 comprising the lead lines |92 and
1. In a can closing machine, the combination of
|93 includes a switch member |94 winch is urged a spider adapted' to receive can bodies, a continu
to open position by a spring |95. Al shunt cir
ously operating conveyor, a pusher movable trans
cuit |96 including a primary winding |91 induces versely of the conveyor, a can chuck movablever
through a secondary winding |98 a current in -a tically toward and from said spider, and means
65 secondary circuit in which is included a switch- operatingv said pusher and said chuck in such
|99 controlled by the thrust member |9.|, and an timed relation that a-can body is moved from the
‘ electroma'gnèt 20| adapted to hold >the switch '_ conveyor throughfa'curved path onto said chuck _
member |84 in closed position. Upon ‘depression
ofthe thrust member | 9| by the opposed thrust
while still traveling with the' conveyor. and is;v
moved the chuck through a curved
70 member |98 under the inñuence -of spring |91 - path while it is still being moved transversely by
the switch |99 is opened thereby deenergizing the the pusher.
electrpmagnet 20| to permit breaking of the main
2. In acanclosing machine, the combination -
circuit by the, opening of the switch |94, thereby
stopping the drive motor.
'u> .It will be apparent, therefore, -that the ma
of a rotatable turret spider, a can closing mech- ‘
.. anism positioned »in cooperative relation-to- saidl
spider, a chuck for inserting can bodiesinto said
delivering can ibodies into proximity to said' tur--spider, a chuck upon which the can bodies are re
moved from said spider, a feed-in conveyor in ret, and means for moving said bodies by a oon
.proximity to said first chuck, a delivery conveyor - tinuous motion through a curved path from _said
conveyor to said turret without abriiptchangein
in proximity to said second chuck, a pair of push
ers, a reciprocatory slide Acarrying said pushers,- speed or direction, whereby spilling o_f the-body;
and means for actuating said slide to transfer a
can body> from said feed-in conveyor to said first
chuck and simultaneously transfer another body
from said second chuck to the delivery conveyor.
3. A can body- closing machine comprising a
rotatable turret spider provided with can body
and can end receiving pockets, a can closing
mechanism disposed in cooperative relation to
said spider, a feed-in conveyor at one side of the
16 s'pider, a delivery conveyor at the oppositeside,
a chuck disposed beneath the spider _adjacent to
said feed-in conveyor, a second chuck disposed
beneath the spider adjacent to said delivery con
' _veyor, means for raising and lowering said- chucks
in synchronism, and means_including a slide pro
vided With a plurality'of pushers for transferring
can bodies from the feed-in conveyor to said first
chuck and from said Asecond chuck to said de
livery conveyor.
contents is obviated, said‘means including a :re- -
ciprocating _member for changing the direction of _
travel of said bodies during the advancing move-ment thereof by said conveyor.
; .
6. In a can closing machine, the combination
lation as to transfer can bodiesv by a continuous '
movement from said conveyor _to said turret by
moving said bodies horizontally> in a curved path
away from said transferrer and `the'n elevating
said bodies through a curved path into said
spider, said movements being `effected without
abrupt change in speed or direction of the bodies,
Vwhereby spilling of the body contents is obviated.
7. In a can closing machine, the combination
of an intermittently operated turret provided
tion of a spider provided with pockets for the with can receiving pockets, acontinuously oper
reception of can bodies and ends, a can closing ating conveyor for conveying can bodies to said
mechanism, means for feeding can bodies and turret, and» means for transferring said_bodies
ends to said pockets, means for preventing the _, from said conveyor to said turret,_said means
a reciprocatory member operable im
lao feeding of a can end to a pocket in which an end including
is already disposed, an electric motor for driving timed relation with the advancing movement of
the spider and feeding means, andmeans for the bodies for gradually changing the> direction
stopping the motor to prevent the delivery of a of such movement so‘as to direct the bodies in a
body to the yclosing _mechanism in the event that continuous curved path into the turret pockets
Without abrupt change in speed or’ direction
35 the pocket in which said body -is disposed con
whereby to obviate spilling of the contents of said
tains no end for attachment thereto.
4. In a can end closing machine, the combina
5. In a can closing machine, an intermittently
operated turret »provided with can body receiving
pockets, a c__ontinuously- operating conveyor for
of a'rotatable turret providedwith can body ref
ceiving pockets, a continuously operating .con
veyor, a laterally movable pusher, a vertically
movable chuck, and means for operating said
conveyor, pusher and chuck in such timed re 15:
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