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Патент USA US2406784

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Sept. 3, 1946.
A. E. ALMGREN
2,406,784 ì
OVERCAPl APPLYING- MACHINE
‘ Filed March 19, 1942
»MH
1o ' sheets-sheet 41
INVENTOR
_
BY
¿t
ß
.
ATTORNEYS
Sept. 3, 1946.
„
A. E. ALMGRx-:N‘
~
2,406,734
ovERcAP APPLYING‘ MACHINE
`
rfi
Filed March 19, 1942-'
4_T`
/7/
l
'
1o sheets-sheet 2
9
204.]
INVENTOR
ATTORNEYS
'
>
3, ~1945-
l A. E. ALMGRENY
2,406,784
OVERCAP APPLYING MACHINE
ATTORNEYS
ASept° 3, 1946.
n
A. E. ALMGREN .
2,406,784
OVERCAP APPLYING MACHÍINE _
Filed March 19, 1942
l0 Shelets-S‘heet l5
Sept. 3,1946.
A. E. _»ALMGRE'N
2,406,784
OVERCAP APPLYING MACHINE .`
Filed March 19, 1942
10 Sheets-Sheet 6
Sept. 3, 1946.`
-
A. E. ALMGREN
2,406,784
OVERGAP APPLYING MACHINE
Filed March 19, 1942
1o sheets-sheet 7
Sept. 3, 1946.
A. E. ALMGREN
2,406,784
OVERGAP APPLYING MACHINE
Filed March 19, 1942
10 'Sheets-Sheet 8
Sept. 3, 1946.v
y
A. E. ALMGREN
2,406,784,
OVERCAP APPLYING MACHINE
` Filedl March 19, 1942
¿i 266 Zai
Zäfi ff? 'Zail
-1o sheets-sheet' e
Patented Sept. 3, 1946
2,406,784
lUNITED .STATES ¿PATENT OFFICE
l
n
«2,406,784 " '
Y,
August oviinonr
E. Mmmm-Hillside,
APPLYING N.
`
Yassignml- to
AmericaiLCanQOmpany, `New York, N. Y., a
corporation of> New lJersey
Application March 19, 1942, seriaìfNo. ¿433,394
s claims. (ci. 164-48?)
-
1
.
The 'present yinve‘nïticïin relates to a »machine `v"for
applying over-caps to containers and the like «and
has particular reference to 'cúttingo?f a pòrtiö?
2
tially` along the line 5?-6 in
3, with parts
broken away;
Figs. '7' and 8 are enlarged detail views `of a
of a web of overca-'p material to produce an over
portion .of the machine shown in Fig. 6, the views
showing ïtla‘è movable parts and 'a container Iin
Icanto placing the, severed overcap in position
on a container, and to securing the -o'vercap in
place while 'the containers are movi-ng through
different positions, with parts broken away;
Fig. «9 -is la View similar to Fig. 6 and showing
the machine in a continuous procession.v
character nshown in United States Patent 2,085,
the .movable parts in a `different position;
Fig. 10 is aver-tical vsection taken substantial
ly along the line IBI-’|10 'in Fig. l5, with parts
979, issued Jîuly 6,' 1937, ïto lJohn yM». -HothersalL
broken away;
In the ~manu-facture of fibre containers of the
and -1i>articu’larly »used for milk, the container
after being rfilled and sealed is protected prefèr~
y
Í Fig.. 111 is a 'horizontal >section 'taken substan
tially along the lline vrI I+II in Fig. 3.;
Fig. >12 is a vertical section taken substantially
“Cellophane” 0r the like which ¿is crimped >i-'n 15 along Athe line rie-:l2 lin Fig. 11, with parts broken
`place over the top end yof the container.
The instant invention Aconteinpla'tes an fim
Fig. 13 iis an :enlargedisection of the upper por
tion- of the «machine and taken substantially
proved machine which cuts 'the material for 'such
an o'vercap from 'a substantially continuous *strip
along ‘the v'broken :line |3-I3 in Fig. 1, with parts
and secures `the overc'ap in place on the contain -20 broken away; i
`
ably ‘by an oveifc'aïp >'of -cellulo's'ic material such as
er by crimping it tightly 'over the edges -of lthe
» Figs. ylll 'and 15 -are fragmentary elevational
container while applying heat to the crimped
views of transfer fingers in the machine, 'as
edges of the overcap.
viewed "from ‘a .plane indicated 'by the line I 4-I4
An object therefore of the invention is the »pro
in ».Fig. 1-3», with parts broken 'away and parts
vision of an improved overcapping machine 25 shown in section;
'
wherein the material for the overcap is severed
Figs. 16 fand 1’7 `are sectional details taken sub
stantially V'along »the respective lines `Iii-"-Iâ and
from a substantially Vcontinuous trip of material,
tl‘i‘e cut-'off overcap is transferred to a position
I'I-l‘l] in Fig'. '14;
on top 'of 4a'cont'ain'er >to be protected, 'and then is
Fig. 18 'is an enlarged .perspective View of a
sealed permanently in "place ai‘o'und its edges by 30 cutting element used ~in the machine;
_
applying heat and pressure thereto thus protect
Vli’i'g. 19 is an enlarged View of a' clinching head
in'g the surface it covers against contamination.
used in the machine, with parts broken away and
Numerous other objects and advantages -of the
shown in section;
invention will be apparent as it is better under
Fig. 20 .is a <'sectional view taken substantially
stood from the following description, which, 35 along the line 20-20 in Fig. 19;
taken in 'connection with the accompanying
drawings, discloses a preferred embodiment
thereof.
‘
n
` pad device used in the niachine with .a container
in place, with parts Tof the device being broken
'
Referring to the drawings:
Figure 1 is a top plan Vviewrof a -machine em
>
Fig. ’21 is .-an enlarged detail View of a `lifter
back `and Áshown in section, with a portion 'of the
40 container bi‘öken away;
y
Fig. 22 is 'an enlarged, exploded perspective
away;
View showing `the transfer Enger parts illustrat
Fig. 2 is a perspective View ef the upper por'
ed in Figs. 14 and 15;
Fig. 23 is ‘an enlarged top plan view of a cutting
tion of a container and anv overcap :to be applied
thereto in the machine shown in Fig. 1;
45 device' lused in the machine; and
Fig. 3 is a longitudinal section taken substan
Figs. 24 »and‘25 are Vertical sections taken Ysub
tially along the line 3_3 in Fig. `1, with parts
stantially along the lines 2li-“24 and 25e-25 in
bodying 'the instant invention, with parts broken
broken away;
Fig. 4 Vis a transverse section taken rsubstan
Fig. v2'3.
`
a preferred embodiment of the instant in
tially along the broken line ¿#4 in Fig. 3, with 50 vention the drawings illustrate a machine for
parts broken away;
Fig, 5 is a fragmentary longitudinal section
taken substantially along the broken line 5-5 in
appl-ying a Cellópl'ialn‘ë brother suitable material
overcap A (Fig. 2) "to «a square ñbre milk con
Fig. 4;
Fig. >6 is a 'horizontal section ’taken substan
55
tainei‘ B .of the character disclosed in the above
m'e'ntioned -H'o'thersa'll patent. The top of such'
a container is secured .in place by a suitable end
2,406,784
3
be understood further that the entire container
is provided with a coating of wax or paraffin and
this coating when partially melted serves as a
in the machine frame 25. The drive shaft may
. be rotated in any suitable manner.
bonding agent for holding the overcap'in place
on the container.
'
'
The containers B are advanced-through the
machine in an upright position in a continuous
procession in which the individual containers are
stopped momentarily at a sealing station where
the overcaps are applied. The overcaps are cut
from a continuous web or strip D (Fig. 4) of
overcap stock preferably fed from a supply roll
E. A cut-off overcap is moved into position over
the top of a container to be sealed and ís held
there stationary while the container moves up
to meet the overcap. On the upward travel of
the container it picks up- the overcap and carries 20
it up into a closing head F (Fig. 4) which secures
the overcap i-n place.
The positioned overcap is of suñicient area
to extend beyond the ledges C of the container
and these overhanging portions are folded down
and inwardly around and against the bottom of
the ledges by the closing head F. The closing
head also presses the edges of the overcap tightly
in place while heating them to produce a perma
4
formed on the main frame 25. The bevel gear
45 meshes with and is driven by a bevel gear 49
mounted on a continuously rotating main drive
shaft 5i) which is journaled in bearings 5l formed
seam which forms an overhanging ledge C which
surrounds the container and it is to this ledge
that the overcap is secured in place. It should
Hence rotation of the drive shaft 55 rocks the
cam arm 39 wand this, through the vertical shaft
31, rocks'the transfer arm 35 at the proper time
'to shift the container B. The transfer arm
Ypushes the container into engagement with an
offset guide rail 52 (Fig. 6) and since the con
tainer is still partially on the conveyor 2l, the
arm temporarily holds it in this shifted position
under slight pressure to prevent premature longi
tudinal movement of the container. The guide
rail 52 is formed as a part of the guide rail 21.
Provision is maden for stopping the feeding of
containers through the machine when there are
insufficient containers entering by way of the
entrance belt 2l. This is brought about by a
hook latch 53 (Figs. 6, 'l and 8) which is mounted
on a pivot stud 54 secured in the main frame 25.
The latch is backed up by a spring 55 located in
a boss 55 formed on the main frame. The in
ner end of the latch extends into the path of
travel of the containers as they approach th'e
stop lug 3i.
The latch spring 55 presses the hook latch 53
nent seal between the overoap and the wax on 30 against the adjacent edge of the container push
the container which binds the overcap to the
container and thus encloses the top end thereof.
The containersI B to be capped are introduced
into the machine by way of a continuously mov
ing endless beit entrance conveyor 2l (Figs. 1
and 3). The conveyor extends outside the ma.
chine and is driven in any suitable manner. In
the machine the conveyor takes over an idler
plate 35 and the hook portion of the latch thus
normally holds the plate from movement against
the incoming containers as shown in Fig. 8. It
is this holding action that prevents feeding of
the containers through the machine.
When the line of incoming containers is suiiî
cient, such as shown in Fig. 6, there is enough
pressure on the innermost container in the line
to form the latch 53 back as far as the stop lug
pulley 22 (see also Fig. 4) which is mounted on
a short shaft 23 carried in a bearing bracket 40 3l and this releases the hook portion of the latch
from the push plate and thus permits the plate
24 formed as a part of a frame 25 which con
to function. Normally there are sufficient con
stitutes the main frame of the machine.
tainers passing into the machine to keep the push
The conveyor 2l carries the entering contain
plate in a released condition so that there will
ers along a straight line path of travel between
be no interruption in the operation of the ma
a pair of guide rails 25, 21 which are disposed
chine.
one on each side of the conveyor. These guide
Just as the transfer arm 35 begins to move
rails are bolted to the machine frame 25. Ad
back through a return stroke to release a con
jacent the inner end of the conveyor the inner
tainer shifted into position against the guide rail
most container in the entering line is stopped
temporarily against further forward travel by a 50 52; the container is engaged by a timing finger
51 (Figs. 3 and 6') and is advanced one step
stop block 3l (Fig. 6) which is bolted to the main
longitudinally of the machine. The timing finger
frame 25. This temporary pause in the advance
ment of the container is effected so that it can
be brought into time with the other moving parts
of the machine.
51 is formed on a stroke bar 53 which is disposed
adjacent the path of travel of the containers.
One end of the stroke bar is pivoted on a rocker
While the innermost container is in this ar
arm 59 mounted on a pivot pin Si) secured in a
and 9) which engages against a side of the con- `
upper end of the vertical drive or crank shaft 41
(see Fig. 4). By reason of this connection with
bracket 5| (see also Figs. 5 and 10) fastened to
rested position it is shifted sidewise from the
a gear housing 32 bolted to the machine frame
position shown in Fig. 6 to that shown in dotted
25.
lines in Fig. 9. This shifting of the container
The opposite end of the stroke bar 58 is con
is performed by a transfer arm 35 (Figs. 1, 4 and 60
nected pivotally to a crank 63 mounted on the
6) formed with a push plate 35 (see also Figs. 5
tainer. The transfer arm is mounted on a verti
cal rock shaft 31 carried in a bearing 38 (see also
the drive shaft (i1, the stroke bar 58 is reciprocated
Fig. 4) formed in the main frame 25. The lower 65 through a forward or feeding stroke, as shown
in Fig. 9, and thence through a return stroke,
end of the shaft carries a bell crank 39 having
on one leg a cam roller 4I (see also Fig. 11) which
as shown in Fig. 6.
.
Gn the feeding stroke of the stroke bar 58, the
operates against an edge cam 42. A spring 44
timing finger 51 pushes the shifted container
holds the roller against the cam. One end of
the spring is connected to the second leg of the 70 B longitudinally of the machine one step in time
with the other moving parts of the machine and
bell crank 39 while the opposite end of the spring
places it in position on a lifter pad 65 (Figs.
is secured to the machine frame 25.
3, 6 and 2l). Guide rails 65 formed on the pad
The cam 42 is formed integrally with a bevel
hold the container against displacementgear 46 (Figs. 3, 4 and 12) mounted on a verti-A
During this placing of the container B on the
cal crank shaft 41 carried in a long bearing 48
2,406,784
5
6
lifter pad £5, a stop >or gauge iñnger 11| (Figs.
6 and 10) ¿is interposed temporarily in the ïpath
of travel ofthe Icontainer to bring the latter 'to
formed 4in ¿the out .off bracket §99..
Theiinner endsoftthe arms Ilditerminate adja
rest in a predeterminedglocation on the `ipad. The
cent'the innervends o'f the .anvil IIII vand the .pres
stop .iinger v1I is mounted on .a ¿short :shaft 'I2
which is carried in bearing brackets 13 >on vthe
sure plate 132., :and .carry ya serrated out off knife
III8 '(-see `also Fig. 18) which functions in severing
main frame .25. The .shaft also .carries a cam
lever 'I4 (Fig. V1(3) .having a cam roller 15 which
operates against .an edge cam lIìmountedonfthe
main drive shaft 5i) (Fig. 3). .It is this cam 'that 10
an -overcap A from the stripD. The opposite ends
of the arms are 'tied together by a bridge ||9
shiftsithe stopñnger 'II .ìnt'oand 'out of container
gauging position intime with the movement 'of
bya link v|22 (Figs. "4,6, 1'1 and 12) ïto a camarm
frame 25.
the cam by a tension spring '|25 (Fig. 12) which
is connected ‘between the cam arm and fa .bracket
and one of the arms is lformed with a .lever ex
tension |2I. vThe lever extension Sis connected
|23 mounted on'a pivot shaft ‘I 24 carried in bear
the -‘containers through :the machine. The A@roller
ing brackets |25 .formed lin 'the machine frame
is >maintained >.in engagement with the cam .by a
25. The inner end Aof the cam arm |23 carries
spring vbarrel 'I1 (Figs. »10 and .1:1) which'presses 15 a cam .roller |26 (Figs-3 and 1.1) which oper
ates against an .edge cam |21 mounted on "the
against the :ca-rn leverv 1i. The spring 4barrel 'is
main drive shaft 55. The roller is held against
located ina .lug >’I8 sfo'rmedzon the machine lmain
,
After ‘a ycontainer :is .located properly fon Vthe
lifter pad 65 and While the ¿timing îñnger 51 is 20 Y|25 which extends Yinwardly from the machine
frame 25.
.
moving Vloack through 'a ?return stroke, the Icon
Adjacent .the cut-oli knife 'I 'i8 and spaced îin
tainer is lifted lto .an elevated position >to receive
wardly thereof is `a cooperating auxiliary fout-ofi’
its‘overcap. A. lFor this purpose the lifter pad
knife |31 which is merely a support edge 4for the
is .formed »on a long depending .sleeve 19 (Figs.
3 ,and .21) which contains a compression spring 25 web being cut. The auxiliary cut-oit knife is
disposed .below they path of travel ofthe web D
SQ and which yextends -down `into .a long stem `8`|.
and kis secured to the inner end of an auxiliary
The spring provides .a cushion .for ‘the rcontainer
out-off lever |32. This lever is `mounted on ‘the
to prevent its being crushed when "it Íis lifted Vup
pivot shaft II5 and is connected by a 'link |33 to
into a clinching head, I‘as will be hereinafter ex
plained. .The stein extendsdown through a slide 30 a cam lever |34. The cam lever is mounted 'on
the pivot shaft v52e. The Iinner end of the cam
bearing 82 :in thelmachinemainframe 25. '
lever |34 carries a fcarn roller 438 (Fig. 3) which
‘Thellowerßend of the ïlifter stem 8| -is connected
operates in 1a ‘cani groove |35 of 'a -face cam 'MI
pivotally lto a horizontal cam lever 83, Figs.
mounted on `the main »drive shaft 5B.
4 and 10, mounted on .a pivot shaft 814 carried
Thus as the 'main drive shaft '55 rotates, the
in a bearing block 85 secured'to the main frame 35
the cams |21, MI »sli-ift the'links 422, "|33 and
25. The cam lever 83 extends adjacent the edge
cam 116 and carries a cam -roller 8'6 which oper
ates in a cam groove 81 'formed in a `face of the
edge cam. It ís this cam :groove »that raises and
lowers the -lifter pad .65 and a container B lo 40
cated 'thereongîin .time with the other moving parts
of the machine.
‘
~
While a container B is being raised into a posi
thus operate the out-off levers IIA, |32 in scissor
fashion in time with the yother moving parts of
the machine. This -cuts oit an overcap from the
web E. 'When 4the cut-off levers ‘are in anopen
position, as shown 'in »Fig.4, the spring barrels I I I
in the levers IM relieve pressure on‘the pressure
plate "to2 v’and thus Vpermit the spring V|26 to raise
the plate o'ff the web D. While the vpressure thus
tion to receive an voveroap A, the `ove'rcap is
severed from the .supply roll E and shifted into 45 is relieved from the web, the latter -is 'drawn for
ward a distance sufli'cient to Ameasure. and expose
vertical alignment with .the rising lcontainer, as
enough material to produce an 'overcap A.
hereinbefore mentioned. VThe supply roll E of
After this predetermined quantity ofthe Web D
overcap stock is retained on a reel (9| (Fig. 4)
has been measured off, the A‘cut-oh levers begin
supported `Ona shaft '.92 (seealso Fig. 1) carried
infbearing vbrackets .S3 formed 'on a super-struc 50 to-close >or >come ’together lfor the severing opera
tion. lDuring this movement of ‘the cut-off levers
ture or upper frame e4 of the main frame 25.
the spring barrels IÍII 'move ldow-n against the
The 'web D of Y‘ove'rcap material `as it comes
pressure plate vIll-2 and thus Aforce the latter Adown
from the supplyl’roll E., kpasses-over an idler pulley
against the vv'ebïD. This clamps ‘thelatt'er against
$35 which is mounted 'on .arms 1Si! carried on the
roll shaft 32. From the idler roller 95, fthe web 55 the anvil lol and hence holds 'the web from move
ment. As Athe cuit-ofi” 'levers `continue tool‘ose, the
passes under a .fianged guide roller 96 (Figs.
auxiliary knife ‘|31 »comes 'up 'against thefbottom
4, 23 and 25) mounted 'on a shaft 91 carried
of îthe 'web îto support it ywhile the serrated knife
in bearings 98 in a 'cut-off Vbracket 99 secured to
|'I8 comes down against the top of the web 'first
the machine frame ¿25. The leading end of vthe
web D is .held tightly between a 'stationary anvil 60 to :pierce :and 'then ’to Ysever the >.o'vercap from the
web.
pad I!!! and a superimposed pressure plate IIO`2.
In order to prevent the roll »of overcap material
The pressure plate m2 isloosely suspended
from :rotating just after a length o'f the web AD ‘is
from »a stud A|03 (see Fig. 24) which extends up
measured off, an automatic brake device is pro
through a bore IM in a boss |05 on the cut-off
65 videdon the reel '9 I. This-device includes a brake
bracket 99. The head of the stud rests Aupon a
drum |212 (Figs. 1 and?i) which is mounted on the
compression spring I 06 'which surrounds the stud
reel shaft ’92 adjacent the reel. This-drum ‘car
and which is located in an enlarged shouldered
ries-a'rilobon brake 'band V|43 which operates over
borre |91 in the vboss |115.
K
a pin IM carried in a boss |45 secured ‘to a cover
The pressure plate |02 also is maintained under 70 |45 for the reel 9i. This -end of ‘the band is
pressure of a pair of vertical spring barrels III
secured to a long adjustable stud I 41 which is
which bear down on top of the plate. The spring
carried loosely in 'the'bo'ss |45. A nut |49 on vthe
barrels are located in sockets I I2 Yformed in a
outerend of the stud is provided for adjusting the
yoke IIS which connects a pair of arms H4.
These arms IM vare mounted .on a >.pivot shaft 75 ` 'Theïopposite :end of the brakeband |548 .is se
brake band.
'
»
_
'
v
2,406,784
7
are carried on a swing arm |61 (see also Figs.
cured in a swing lever |50 mounted on a pivot
pin |51 carried in a boss formed on the reel arm -
3 and 4). ' The two arms are mounted on a
93. The lever is maintained under action of a
tension spring |52 which is stretched between
pivot sleeve, |68 (see Fig. 13) carried in bear
ings |89 in the upper frame 94.
the outer end of the lever and the reel cover |45.
At the ltop, the' swing arms are tied together
This keeps the brake band taut around the brake
drum |42. The outer end of the lever also is
by a tie member |1| so that they operate in uni
son. At the bottom, the lower end of each swing
arm |51 is bifurcated and is formed with inward
ly extending ears |15. (see Figs. 13, 16 and 22).
formed with a button |53 which is located close
but in spaced relation to one of the reel arms 90.
Hence when the web D of overcap material is
pulled to measure 01T a length for an overcap.
10
These ears on each> side form a support for a
pivot pin |151»` (see also Figs. 17 and 22) of the
associated lower gripper finger |66.
the web draws the reel levers 9|! downwardly and
Each lower gripper finger |66 is formed as an
this brings Ithe lever on one side into engagement
integral part on the inner ends of spaced and
with the button |53 on the adjacent brake lever
|58, This moves the brake lever inwardly. This 15 parallel lever arms |11. In the assembled posi
tion these two arms |11 are disposed inside of the
movement of the brake lever releases the pressure
ears |15. The ears form a mounting for the pivot
on the brake band and thus frees the brake drum
pin |15.
to permit the reel 9| to rotate.
Each upper gripper finger |65 is formed as an
When the pull on the web D ceases, the reel
integral part of a single lever arm |8 I. This arm
levers 98 shift back into original position under
ts between the spaced arms |11 of the lower
the action of a pair of springs |54 which are
ñngers. The inner end of each upper arm |8|
located one on each side of the reel and which
is formed with a vertical slot |82 through which
are .stretched between the levers and the reel
cover IAS. The engaged lever thus moves away
the pivot pin |18 extends. The outer end of each
from the button on the brake lever |50 and 25 upper arm carries a short hinge pin |83, the ends
thereby permits the spring |52 to draw the brake
band taut around the drum. This brings the reel
9| to rest and holds it against rotation until the
of which extend into horizontally elongated slots
|84 cut through the outer ends of the lower par
allel arms |11.
web D is pulled again to measure off another
The outer end of each upper gripper finger
overcap.
When no containers are passing through the
arm |8| is formed with a rectangular vertical
machine, as when the pusher plate 36 is held
inoperative, the knife lever IM and the pressure
plate I |12 are held inoperative. This prevents
feeding of the web D and also prevents an over
cap from being cut off. This is brought about
by a stop pin |55 (Figs. 4, 10, 1l and 12) having
one end disposed adjacent the path of travel of
shank |86 (see Figs. 14, 16 and 22) which is dis
posed in a vertical slideway |81 formed in the
swing arm |81 on that side.
The shank is re
tained against displacement by a cover plate |88
which is secured to the swing arm.
Each shank |38 is formed with a vertical, elon
gated slot |85 in which a compression spring
19| is dispo-sed. The upper end of the spring
a lug extension |58 on the knife operating cam
engages against a pin |82 which is carried in the
arm |23. The stop pin |55 is carried in a bracket 40 cover plate |88. This spring normally presses
|51 formed on the main frame 25. The oppo
down on the upper finger arm |8| and maintains
site end of the stop pin is connected by a link
its fingers |55, 1% in a closed position, as shown
|58 to a short arm |59 formed as a part of the
in Fig. 14.
lever 39 mounted on the container pusher plate
actuating rock shaft 31.
Actuation or opening of the gripper fingers |65,
|65 at the proper time is effected by rods |95
(Figs. 3, 4 and 13) which are secured to the up
Hence every time the pusher plate actuating
~
shaft 31 is rocked by the edge cam 42 to feed
containers into the machine, the short arm |58
per ends of the shanks |88 Rods |95 extend up
through bearing blocks |56 on the outside of the
pushes the stop pin |55 into the path of travel
swing arms |51. The upper ends of the rods are
of the lug extension |56 on the knife cam arm 50 bifurcated and carry cam rollers |91 which oper
|23. This occurs in time with the movement of
ate on cam surfaces |88 of a pair of internal edge
the knife cam arm and while the arm is at rest
cams |98.
just prior to making a cut-off stroke. Normal
1y the pin is again withdrawn before the cut-off
stroke is performed.
end of a rock shaft 28| which extends through
the swing arm pivot sleeve |68.
One of the edge cams |99, the one at the right
as viewed in Fig. 3, is formed as an integral part
of a lever 2&4 which is connected by a link 285
(Figs. l, 5 and 13) to a substantially vertical cam
However, when the pusher plate 36 Vis stopped
from feeding containers into the machine, the
rocker shaft 31 is held stationary with the stop
pin |55 in an extended position. Hence when
the knife cam arm |23 is about to operate through
its next stroke it is stopped by the lug extension
|55 striking against the extended stop pin. This
Each cam is mounted on the outer
lever 285. The cam lever is mounted on a pivot
pin 251 carried in a boss 258 of the upper frame
Se. The lever carries a cam roller ‘289 which oper- ’
ates against an edge cam 2li mounted on a cam
prevents the arm from making its stroke and
shaft 2212. A. tension spring 2 i3 stretched between
thus prevents operation of the knife ||8 and
the lever and the upper frame 54 holds the cam
movement of the anvil pressure plate |02. It 65 roller against the cam. The shaft is journaled in
is this action, in connection with other elements
bearings 255 formed in the machine upper
yet to be described, that prevents feeding of the
frame 81|.
web D until .containers are again brought into
The cam shaft 2|2 is rotated continuously by a
bevel gear 22| (Fig. 5) which is mounted on the
the machine.
-The measuring off of the overcap by drawing
outer end of the shaft. The gear meshes with
the web forward is effected by a pair of upper
and is driven by a bevel gear 222 which is mounted
and a pair of lower gripper fingers |65, |66 (Figs.
on the upper end of a vertical tubular auxiliary
drive shaft 223. The drive shaft is journaled in a
3, 14, 15 and 22,). One upper and one lower
bearing 224 in the upper frame 94 and in a bear
finger are located on each side of the path of
travel of the web D. The fingers on each side 75 ing 225 (Figs. 3, 4 and 6) in the lower frame 25.
2,406,784
10
The lower end‘of the driveshaft223 carries av spur
gear 228% (see also Fig. l1); which meshes with an
idler gear 228 mounted on an idler shaft 23 | jour
naled in a bearing 232 formed on the machine
main frame. The idlery gear 229, meshes with af
gear 235 which is mounted on the crank shaft 41
feeding containers into the machine, the vertical
shaft 25.5 is held stationary andV its stop pin 253|`
is` in an extended position in the path of travel
of the finger actuating leverv 253. Thust the stop
pin prevents actuating of the lever and> this holds
the gripper fingers |55, l 5t open so that they will
(Fig. 5) driven by the bevel gear connection 45,
not engage and withdraw the Vweb D, as herein-‘l
49 with the main drive shaft 50.
before explained.
l
,
v After the overcap is severed from vthe web- the
Thus through this connection with the main
drive shaft 56, the cam 22| rotates in time with 10 swing arms te? resume, their backward swing and
thus carry the cut-off overcap into a position di
the other moving parts _of the machine and ac
rectly over the tcp of the container B which is
tuates the cam lever 236 and its link 205 to open
being lifted by they lifter pad' 65. The gripper 1in
and close the gripper fingers |65, |65 as herein
gers |65, |65 holdv the- overcap in this-,position
before explained. This opening and closing of the
u
gripper fingers is also effected in time with the 1-5 until it is picked upby the container.
When the.- topof the rising container B- engages
movement of the swing arms |61.
The swing arms |61 are shifted by way of a link
24| (Fig. 4) which pivotally connects the swing
arms with the lower end of a Cam lever 242 (see
against the suspended overcapn, the latter is
clamped down tight. on the; container before the
grippery fingers release it. Clamping of the>~ ove-r
also Fig. 5). The cam lever is mounted on a pivot 20 cap. is brought about by a knock-out plunger 25|
(Fig-_, 13); which-is.- disposed in a clinching head
pin 243 carried in a boss 244 formed on the upper
frame 94. Intermediate its ends the cam lever
carries a. camV roller which operates in a cam
groove 255 of' a face cam 246 mounted' on the
camshaft
2l'2'.
’
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~
Y
`
»
Y
The rotating cam 24S iirst shifts the swing arms
ist outwardiyfmrougnan idle stroke into me p‘o
si'tion shown in
13.. lWhen first brought into
232I securedl tothe upper frame 92. The plunger.
is carried on a vertical stem 265 which extends up
through a head rsleeveíZ-ëâ> carried~ in >a slide bear
ing> 261 in thev head. YNear its top end, thepl-unger y
stemis formedwith a socketÍ253in which one end:
' of a rock lever Zâiiisengaged.-
»
'I'he rock lever 259 is mountedv on a pivotpin
21| carried in lugsy 212 formed in the( upperV
this position,” the ,gripper fingers |65, Iï'o‘íï are open
and ‘arefdispiosed’ along-side of' the» anvil >mi andr 30 frame S4. The. inner end- of the rook lever en-v
gages in a bifurcated end of a cam lever 215
the, pressure plate |32. These‘partshold'the- lead
mounted on a pivot pin214 secured ina bearing
ing end of the web D1. While iin this position of
block 2_15'bolted tofthe upper frame. Intermethe swing arms,> the gripper ñngersA |55, |66 close,
diate its ends the cam` lever carries a cam roller
as hereinbefore explained, onto the outer edges of
the: web Dwhi'ch project beyond the anvil HH and 35 2.11 which operatesI in afcam groove in a. face
cam 218 mounted on the cam shaft 212.
l
pressure plate |22. The web thus is held tightly
by the fingers»y and' it is at'this time that the pres
f ÉThus as the cam 218. rotates, it rocks the cam
llever 213 which in turn shifts the rock lever 269.
surerplate` |212> is lifted to release the web.
’
Upon release of the web'D, the swing arms |615
Under contro] of this cam, the rock lever moves
movek back or inwardly while drawing the webwith‘them a distance equal' to?k the length of one
the knockout plunger 26| down. against4 the over
cap and the top of the; rising container to-holdî the
overcap.V This isfthe overcap: measuring operation
overcap in place. Y As theV container conti-nues to
mentioned> above and> when the web is draw-n out
rise into the clinching. head- 262, theI plunger rises
with it> and thus prevents displacement of the
far‘enough the swingl arms pause i'n their ,travelv
to permit the cut-off knives |18, l'ä'tto sever the 45
overcap. from> the web, as herein'before explained.
During these measuring andl severing operations
ther overcap is' held" tightly- between the gripper
fingers |551, |65.
'
overcap.
,
»
As the container B`A with its superimposed over
cap Aenters the clinching headY 262, the outer
marginal edges' of the, ,overcap which project' be
yond the outer edges of the container top engage
WhenV no containers are passing through the 50 against segmental olinching jaws 285 (Fig. 13)
machine, the'gripper fingers |25, H53 are prevent'
ed from functioning. The web D will not be
gripped and> will not" be pulled out for cutting.
This interruption ofr normal function` is effectedy
which wipe` the edges of the overcap down adja
cent the sides of the container.A Four such jawsr
arey illustrated. These jaws- are- secured to the
lower- ends of vertically disposedv arms 265 (see
bya stop pirr 251 (Figs. 1,4,.'5fand 13) which oper 55 also Figs. 19 and 20) which are mounted- on
ates in conjunction with the stop pin F55 ofthe
pivotr pinsî 281 carried inA lugs 288 formed on the
knife actuating lever |23- hereinbefore explained'.
head 262.
,
~
The stop pin 25|= is located: adjacent the cam
. Adjacent thev lower ends, the head arms 283
lever> 206 and’ slides inf a bearing bracket> 252> se'
areV formed with beveled-_ cam surfaces 29|> which
cured on the main frameA 25; One‘endf of the'pin 60 eng-age against cam rollers: 292 mounted on a
is; connected by a link: 252 to,- an arm 2511¢ mounted
on, the upper' end of; a Vertical' shaft. 255. VAdja~
disc- 293» in the headv 262.` The arms are.A held in
engagement with these cam rol-1ers by- a coiled
cent. thea-rm 2541, the shaft,A is carried in a bearingY
brackety 25%“,> which extends out' from' the main
spring 291|` whichv encircles the. head outside of
and engaging against the arms. »
frame: 25. The: shaft extends down through the 65 . The disc: 293 is formed integrally with the head
middle; of the,v tubular shaft 2:23 and at- its lower
sleeve, 263. The upper end> of the head sleeve
endA carries ana-17111251 which is connectedI by a
is secured by an adjusting screwv 29-1 to a sliding
link 258 tothe cam lever
bracket ilßl'which` is disposed: ina vertical slide,
Hence as the cam', lever Se’rocks to actuate the
way set offA by cooperating gibs 352V (Fig. 3) bolted
pusher plate 35 tot position
containersïi-n-.the 70 to. thev upper frame 94‘.
mach-ine', the lever also osci'l-lates thevertical shaft
The sliding bracket 36| is shifted vertically toV
255 and thus-movesI the stop( pim 25|' into and.- out.
actuate; thev clinching jaws 28.5'. For this purpose
of- the path off travelÉ of the gripper iinger actuat
theV sliding> bracket ispivotally connected to> one
ing: lever 2062' in time with. theÄ movement, ofthe;y
end of a. pair of spaced and, parallel toggle links
l’ever.` When the pusher plate '3.5: is-stopped- from; 715 305 (Figs. 3, 13- and» 19).» whichat their opposite
2,406,784
construction and arrangement of the parts with
ends carry a pivot pin 3|J6 on which is mounted a
>toggle arm 301 and one end of an actuating rod
out Vdeparting from the spirit and scope of the
invention or sacrificing all of its material ad
368. The toggle arm 301 is keyed to the swing
vantages, the form hereinbefore described being
arm pivot sleeve |68.
The actuating rod 398 is connected to the upper CII merely a preferred embodiment thereof.
I claim:
end of a cam lever 3|| mounted on a pivot pin
l. In a machine for applying protective over»
3|2 carried in brackets 313 formed in the upper
caps to moving containers, said machine includ
frame 94. Intermediate its ends, the cam lever
ing an overcap applying head, a pair of swing
carries a cam roller 3|4 which operates in a suit
arms located adjacent said head and means for
able groove in a face cam 3|5 (Fig. 5).
Hence rotation of the cam 3|5 rocks the cam
effecting relative movement between theV con
tainers and said head for applying an overcap
to a said container: the combination of gripper
ñngers mounted on said swing arms for pulling
a continuous web of overcap material to measure
lever 3| I and-through the toggle connection with
the sliding bracket 30|, shifts the head sleeve
266 through a downward or operating stroke
and then upward through a return stroke. On
the down stroke, the sleeve depresses the disc 293
and the cam rollers carried thereon and this per
mits the spring 294 to move the jaw arms 286
inwardly. This movement of the jaw arms presses
off a predetermined length of the web, cutting
devices disposed adjacent the path of travel of
said web for severing the gripped measured-off
portion of the web from the remainder of the
the jaws 285 inwardly against the wiped down 20 web'to produce an individual overcap, and actu
ating means 'cooperatively associated with said
swing arms, said actuating means operating to
shift the arms to first 'measure 'off the overcap
and thereafter to locate the held cut-off overcap
in position between the container and the apply-‘
edges of the overcap A and thus folds the over
cap edges up under the overhanging top ledges Cl
of the container. At the same time the head
sleeve presses down slightly on the knockout
plunger 26| andthus sets up a squeezing action
between the plunger and the jaws to bond the
folded-under edges of the overcap to the container
ing
head.
’
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'
’
2. In a machine for applying protective'over
caps tomoving containers, said machine includ
ing an overcap applying head and means for
The jaws285 are heated, to facilitate the bond
effecting relative movement between the con
30
ing> ofthe overcap edges to the containerY ledges
tainers and said head for applying an overcap
by partially melting the wax >on the containerl
ledges.
Y
Y
_
Y
`
to a said container: the combination of a pair of
This heating is effected by electric heating units
swing arms located adjacent said head, gripper
3|`| (Fig. 1'3) which are embedded in the jaws
and which maybe connected to _any suitable
source of electric energy for heating theunits. "‘-
It is this folding and heating action on the over
cap that permanently clin'ches it in place on then
container.
to produce an overcap, actuating'means cooper
atively associated with said swing arms, said ac
tuating means operating to shift the arms to
are opened by an up-stroke of the head sleeve 266.
This brings the cam rollers 292 on the head sleeve
disc 293 against the bevel cam surfaces ofthe
first measure oil' the overcap and thereafter to
jaw arms'2186 and thus Vspreads apart thearins
and the jaws carried thereon, under the re-,
y _y
When the jaws 285 are fully open, the lifter
pad 65 carries the sealed container down to its
off a predetermined length of the web, cutting
devices disposed adjacent the path of travel of
said web for severing the held measured-off por
tion of the web from the remainder of the web
After such a clinching operation, the jawsf235V
sistance of the spring 294.
ñngers mounted on said swing arms for -pulling
a continuous web of overcapmaterial to measure
45
locate the held cut-01T overcap in position be
tween the container and the applying head,
means for operating said gripper ñngers inde
pendently of said swing arms to retain a grip on
the cut-off overcap while the latter is cut off and
original level in readiness for discharge from the
carried to the container, and means for actuat
machine. At this level the container is engaged
by‘a discharge ñnger 32| (Figs. 3 and 6) of the 50 ing said gripper ñnger operating means toY re
lease the severed and positioned overcap immedi
stroke bar 58 and is pushed off the lifter pad 65
ately prior to the applying operation.
onto a discharge belt 322. The belt- operates
3. In a machine for applying protective over-V
over a pulley 323 mounted on a short pulley shaft
caps
to containers, said machine including vfeed
324 (see also Fig. 10,) carried in a bearing 325
ing devices for introducing containers into the
formed in the gear housing 62,.
1
machine in a continuous procession, means en
The pulley 323 is rotated constantly by a bevel
gageable with the containers as they enter the
gear 321 which is located inside the gear housing
machine for separating them individually from
62 and is mounted on the pulley shaft 324. This
the entering procession to arrange them in timed
gear meshes with and is driven by a bevel pinion
328 mounted on a vertical shaft 329, the upper'end 60 order, auxiliary feeding devices for intermittently
advancing the individual timed containers into
of which is journaled in a bearingV 33| formed in
and beyond an overcap applying station, and an
the bracket 6| secured to the top of the gear
overcap applying head operatively disposed at
housing. The lower end of the shaft is journaled
said station the combination of means for :mov-Y
in a bearing 332 formed in the _bottom of the
ing an individual overcap into positionrbetween
housing. This lower end of the shaft extends be
a said container and said'applying head, said
low the bearing and carries a bevel gear 3'33 which
moving means including a pair of swing arms
meshes with a driving bevel pinion 334 mounted
located adjacent said head, gripper ñngers
on the main drive shaft 5U. Through this con
mounted on said swing arms for pulling a c_on
nection the discharge belt is constantly operated
to carry containers received thereon to any suit 70 tinuous web of overcap material to measurel olf
able place of deposit.
A
It is thought that the invention and many of
its attendant advantages will be understood from
a predetermined length of the web, cutting de
vices disposed adjacent the path of travel of said
web for severing the measured-olf portion of the
web from the remainder of the web to produce
the foregoingl description, and it will be apparent
that various changes may be made in the form, 75 an overcap, and actuating means for moving saidV
2,406,784
14
time with said cutting devices to hold the over
cap while it is cut from the web and to carry
the cut-off overcap to a position for application
swing arms relative to said head to properly lo
cate the overcap with respect' to the container
preparatory to the applying operation.
`
4. In a machine for applying protective over
‘ caps to containers, the combination of means for
holding a web of overcap material, a pair of
to a container.
5
5. The combination as defined in claim 1
wherein the machine also includes means in the
swing arms pivotally mounted relative to said web
overcap applying head movable into engagement
holdingmeans, gripper fingers on said arms for
gripping an end of thev web and for pulling the
with the located overcap to hold the latter in
web through said holding means, cutting devices
pivotally mounted adjacentV said holding means
for cutting the web to produce anv overcap, and
actuating means for moving said swing arms in
position against the container during relative
movement between the container and theV head
and during the overcap applying operation.
AUGUST E. ALMGREN.
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