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Патент USA US2265191

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Dec. 9, 1941.
Filed Aug. 2, 1940
2 Sheets-Sheet l
. Dec. 9, 1941.
Filed Aug. 2, 1940
2 Sheets-Sheet 2
f4 raw“
Patented Dec. 9, 1941 ‘
John F. Peters, Leonia, N.‘ J., assignor to Amer
ican Can Company, New York, N. Y., I’ cum
I ration of New Jersey
~ -
Application August 2, 1940, Serial No. 349,783.
4 Claims.
(01. 271-710)
The present ‘invention relateslto feeding de
Fig. 2 is a vertical sectionaldview taken sub
vices of the reciprocating character for advanc
stantially along the line 2'—2"-’inf
l, with
ing can parts along a predetermined path of
parts broken away;
travel and has particular reference to retaining
Fig. 3 is an enlarged transverse section taken
the fed can parts in an advanced position so 5 substantially along the line H inll'ig; 1,"with
that they will be prevented from slipping back
parts broken away; and
along their line of travel with the feed ele
Fig. 4 is a vertical longitudinal sectiontaken
ments. This is an improvement on the Can end
substantially along_the_line ,H in
assembling machine disclosed in United States
As a preferred embodimentof the invention
Patent 2,200,276, issued May 14, 1940, to J. M. 10 the drawings illustrate principal parts of a fibre
can end feeding and ‘assembling station of a
In feeding devices of the reciprocating char
machine of the character disclosed inthe above
mentioned Hothersall patent.
acter the articles to be fed along a path of
travel are usually engaged by spring held feed
In such a machine the can end members indi
dogs carried in a reciprocating feed bar or the 16 cated by the numeral A are fed along a curved
path of travel into position adjacent the open
like. On the return stroke of the feed bar the
dog is pressed down by the article following
end of rectangular fibre can bodies B and are
the one just advanced and travels therealong to
inserted within the bodies and subsequently
sealed in place to produce the well known milk
its original position behind the article so that
it will be in readiness to engage and advance 20 containers of the character disclosed in United
States Patent 2,085,979, issued July 6, 1937, to
this article on the next feed stroke. Numerous
devices have been designed to prevent retrograde
J. M. Hothersall.‘
The can bodies 13 are carried through the
movement of the article with the feed ?nger as
machine in a horizontal position on a suitable
it returns to its rearmost position but it ap
intermittently moving conveyor which brings the
pears that such devices are sometimes of com
plicated and expensive construction.
bodies to rest at successive working stations lo
The instant invention contemplates the pro
cated along the conveyor. When a-body comes
to rest at the assembly station shown in Fig. 1
vision of a feeding device having a rear move
vment stop which is simple and inexpensive in
it is shifted endwise, transversely of 'the con
construction and which may be readily attached 30 veyor, into a can holding head II. This head
is provided with radially movable jaws l2 which
to most any feeding device.
move inwardly and around the inserted and of
An object therefore of the invention is the
the body and temporarily hold it against dis
provision of a can part feeding device of a
placement for the reception of a can end mem
reciprocating character having a rear movement
stop wherein can parts fed along a predeter 35 ber A.
The can end member A adapted to be inserted
mined path of travel are prevented from return
within the open held end of the body B is brought
ing with the feed elements on their rearward
into position adjacent the end of the body by a
feeding device generally indicated by the nu
Another object is the provision of such a
feeding device wherein the guide rails adjacent 40 meral I4. This device includes an inclined mag
azine l5 which retains a stack of, the end mem
the path of travel of the can parts are formed
bers A. The magazine is supported on a sub
with spaced notches which engage behind an
advanced article and thereby hold it against re
frame [6 which is bolted to a machine main
frame, IT.
turn with the feed elements on their rearward
The end members A are fed from the bottom
Hothersall et al.
Numerous other objects and advantages of
of the magazine, the lowermost member in the
stack ?rst being separated from the stack and
the invention will be apparent as it is better
then completely ejected from the magazine.
understood from the following description,
Separation of the lowermost end member is pref
which, taken in connection with the accompa
nying drawings, discloses a preferred embodi 50 erably brought about by a continuously rotating
ment thereof.
separator screw 2| (Fig. 2) having a long lead
Referring to the drawings:
thread 22 which supports one edge of the stack
Figure 1 is a vertical sectional view of a feed
of the end members in the magazine. The screw
ing device embodying the instant invention, 5 is mounted on the upper end of an inclined shaft .
with parts broken away;
5 23 carried in a bearing bracket 24 secured to
the are-rm It. The lower end of the mm
any suitable manner in time with the other mov
Hencethe r
er frame 4| carries the feed
?ngers II bac and forth along the runway 49
for a stroke slightly greater than the length of
ing parts of the machine.
one can end. On the forward stroke a feed ?n
Hence as the shaft 23 rotates, the separator 5 ger engages behind a can end and pushes it along
screw thread 22 works its way in between the
the runway one step. 0n the backward stroke
lowermost end member A and the one next above
in the stack. Rotation of the screw thus brings _
the can end remains stationary in its advanced
position and the ?nger is thus depressed by the
can endnext in line and travels back along this
the lowermost end member into a horizontal po
sition as shown in Fig. 2 as the edge of the end 10 can end. At the completion of the return stroke
member travels downwardly with the screw
the ?nger snaps up behind the can end and is
'thread. The remaining end members in the
thus ready for the next forward stroke. This is
stack are in supported position on top of the
a usual feed device construction.
screw and hence a space 26 is created’ between
In order to hold the advanced can ends from
the lowermost end member and the one next 15 retrograde movement on the return stroke of
the ?ngers, the outer rails I52 of the runway 49
Ejection of this separated end member A from
are formed with a plurality of spaced notches 65
the magazine is effected by a reciprocating hori
which set off stop shoulders 66 in the rails.
zontal slide bar 3| formed with a stationary feed
Th’ese notches are located just above the under
dog 32 which travels back and forth under the 20 cut clearance recesses 54 in the rails.
magazine ii. The slide bar‘operates in a slide
The can ends while traveling along the run
above in the'stack.
way 33 formed in the. sub-frame It. A rack 35
way 49 are closely con?ned between the inner
on the bottom of the slide bar meshes with a
and outer rails 53, 52 and thus assum‘e a curved
segment gear 36 formed on an arm 31 mounted
character which corresponds to the curvature of
on a pivot pin 39 carried in the sub-frame.
25 the runway. When an advanced can end comes
The arm 31 is connected by a link 39 to a
to rest at the end of the feeding stroke its rear
rocker frame 4| which is keyed to a shaft 42
carried in the sub-frame IS. A lever 43 also
keyed to the shaft 42 is connected to an oper
ating link .45. This link is reciprocated in any
suitable manner in time with the other moving
parts of the machine and preferably in the man
ner disclosed in the Hothersall patent above
edge is adjacent a pair of the notches 65.
- Hence the natural spring in the ?bre stock of
which the can ends are made permits the can
end to return to its ?at straight condition and
this snaps its rear edge outwardly into a notch
where it is adjacent the stop shoulders 66. Thus
when the feed ?ngers move rearwardly the can
ends are held against displacement by the stop
Reciprocation of the link 45 rocks the rocker 35 shoulders and are thus prevented from moving
frame 4| and this through the connecting link
back with the ?ngers.
39 rocks the arm 31 and the segment gear 36.
The last stepped advancement of a can end A
Rocking of the gear thus reciprocates the slide
brings it into a vertical position, on edge and in
bar 3| in its slideway 33. When the slide moves
front of the held can body B in the holding head
inwardly its feed dog 32 engages the separated 40 II. The can ‘end is thereupon pushed into place
can end A and pushes it out from under the
within the body by a reciprocating pusher ele
magazine. The moving can end rides along an
ment ‘II which is disposed rearwardly of the can
inclined sloping surface 43 on the bottom of the
holding head and in endwise alignment with the
magazine‘ and is thus directed into a curved
held can. This pusher element may be recipro
runway 49 disposed adjacent the outer edge of
cated in any suitable manner operating in time
the rocker frame 4|.
with the other moving parts of the machine.
The curved runway 49 extends inwardly and
Insertion of the can end into the body and a
downwardly toward the can holding head I l and
partial folding inwardly of the body ?ange to
terminates adjacent the open end of the held
can body B. This guideway includes a pair of 50 hold the end in place completes the assembling
operations at this station and the can is there
spaced and parallel outer ?at rails 52 which are'
upon released and withdrawn from the can hold
secured at one end to the sub-frame l6 and a
ing head II and advanced by the conveyor to
pair ofsim-iiar inner ?at rails 53 which are se
other stations for subsequent operations.
cured to the outer rails. The outer rails 52 are
It is thought that the invention and many of
formed with an undercut recess 54 in which the 55
its attendant advantages will be understood from
can ends slide and which con?nes them against
the foregoing description, and it will be apparent
that various changes may be made in the form,
construction and arrangement of the parts with
' For this purpose the rocker frame H is formed 60 out departing from the spirit and scope of the
lateral displacement.
A can end deposited in the runway 49 is ad
vanced therealong in a step-by-step manner.
with a curved outer face which carries a plurality
of spaced feed ?ngers 55 mounted on pivot pins
I. secured in the frame. The outer ends of the
feed ?ngers extend into the path of travel of the
can ends in the runway. Adjacent the pivot
pins 56 the ?ngers carry depending lugs 58 which
extend down into clearance recesses 59 formed
in the‘rocker frame. Each of these lugs is en
gaged by a spring barrel 6! backed up by a. com
pression spring housed in the rocker frame. The 70
invention or sacri?cing all of its material advan
tages, the form hereinbefore described being
merely a preferred embodiment thereof.
I claim:
1. A can end feeding device, comprising in
combination, a plurality of spaced feed ?ngers
adapted to be reciprocated in unison for advanc
ing can ends along a predetermined path of
travel in a step-by-step motion, and a curved
runway disposed adjacent the path of travel of
said ?ngers for guiding the can ends, said run
way having a plurality of spaced notches setting
engaging against the rocker frame adjacent one
on‘ stop shoulders into which the rear edges of
side of the recess and thereby serving as stops
the can ends ?ex and engage, thereby preventing
75 retrograde movement of the can ends with the
to limit the outer travel of the feed ?ngers.
spring barrels thus normally maintain the feed
?ngers in position in the runway, the lugs 59
?ngers when the latter move back on their re
posed adjacent the outer face of said rocker
frame, said outer bars having undercut recesses
for con?ning and guiding the can ends and hav
ing a plurality of spaced notches setting off stop
turn stroke.
2. A can end feeding device, comprising in
combination, a rocker frame having a curved
outer face, means for rocking said frame through 5 shoulders against which an edge of a can end
a forward stroke and through a return stroke, a
engages and thereby prevent retrograde move
feed ?nger mounted in said rocker frame for
ment of the can ends with the ?ngers when the
advancing can ends along a curved path of travel
latter move rearwardly on their return stroke.
in a step-by-step motion, and a curved runway
4. A can end feeding device, comprising in
disposed adjacent the outer face of said rocker 10 combination, a magazine for retaining a stack of
frame for guiding a can end while holding it in
curved shape corresponding to the shape of said
curved runway, said runway having a notch
which allows said can end to assume its original
?at form and to engage a stop shoulder set off
can ends, a separator screw adjacent said maga
zine for separating the lowermost can end from
the others in the magazine, a feed dog alsoad
jacent said magazine for ejecting said separated
can end from the magazine, a plurality of spaced
in said notch to prevent retrograde movement
of the can end with the said feed ?nger when
feed ?ngers adapted to be reciprocated in unison
and in time with said feed dog for picking up the
the latter moves rearwardly on its return stroke.
ejected can ends and for advancing them along a
3. A can end feeding device, comprising in
predetermined path of travel in a step-by-step
combination, a rocker frame having a curved 20 motion, anda curved runway disposed adjacent
outer face, means for rocking said frame through
the path of travel of said ?ngers for guiding the
a forward stroke and through a return stroke, a
can ends, said runway having a plurality of
plurality of spaced feed ?ngers mounted in said
rocker frame for advancing can ends along‘a
curved path of travel in a step-by-step motion,
spaced notches setting off stop shoulders into
and a curved runway including a pair of spaced
and parallel inner bars and a similar pair of
outer bars superimposed on said inner bars dis
which the rear edges of the can ends ?ex and en
gage, thereby preventing retrograde movement of
the can ends with the fingers when the latter
move back on their return stroke.
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