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Патент USA US2130518

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Sept. 20, 1938.
2,130,518 .
Filed Sept. 3, 1935
5 Sheets-Sheet 2
_RigZ `
aff f”
/és $47
U7 ` "
sept. 2Q, 193s.
N. P. BACH f
Filed sept'. 3,' A1935'
s sheets-sheet s
#9947/ ’.07 ‘ -.
. 18]. 'A L2?? ß
Patented sept. ‘20, 193s
Neils P. Bach, Geneva, N. Y., assignor to Ameri
can Can Company, New York, N. Y., a corpo
ration of New Jersey
` Application September 3, 1935, Serial‘No. 39,078
'o claims. (
The present invention relates to searning heads
` Fig. 4 is an enlarged perspective view of one 'of
in double seaming »machines such as are used for
the seaming units;
the interlocking of ñanges of non-circular as well
Fig.' 5 is an enlarged part sectional view and
as circular metallic’ container bodies and their
end closures and has particular reference to de
part elevation taken substantially along the
broken ’line 5_5 in Fig. 2;
vices for compensating for wear in the seaming ‘
Fig. 6 is a horizontal sectional view taken sub- f __
stantially along the broken line 6-6 in Fig. 5,
partsnbeing broken- back and other parts removed;
roller and‘ cam follower parts >so as to cause the
former to accurately follow _the contour~of a con
tainer body for effecting theinterfolding of the
Fig. 7. is an enlarged side elevation and‘vertical
10 -body and end closure parts in a finished seam o_f
uniform thickness throughout.
\ _
sectional view of the seaming head otjFlg. 2, the 10
"sectional part being taken substantially along the
broken line l-l in Fig. 2 ;v and
An object of the invention is the provision of
seaming mechanismjof _compact and simple con-
Figs. 8 and> 9 are vertical sectional views taken"
substantially along the `lines 8--`8 and 9_9 re
struction wherein the seaming rollers are' carried
15 in controlled paths of travel around the contour
spectively in Fig. 6.
'I'he preferred( form of apparatus disclosed in
- of a can and Aend closure to be seamed and may
be'adjusted for wear so that they will accurately ‘ the drawings comprises a support housing or f
follow associated can contour following rollers frame i l (Fig. 1) which may be partof a seam
during the seaming operation to eiîect an'inter
ing machine of either the single spindle lor the
multiple spindle type. .When the machine has a 20
-20 folding of thecan 'and end closure parts in a iin
ished seam having _a yuniform thickness through
out and having the s_ame peripheral contour as
that of the containerl
single spindle the housing I lis stationary, where
as if the machine is of the multiple spindle type,
this housing may form part of a rotating ele
Another yobject is the` provision in such a mech ‘ment or turret. "
. l
anism of devices for shifting the seaming rollersv` Y. 'I'he housing Il supports a seaming head com y25
and the can contour following rollers as -a unit prising stationary and movablelparts. . The sta
relative to the controlling means and in respect tionary parts of the seaming lhead proper are '_
to the can contour without altering the -shape of carried on a head sleeve- l2 which is held at its
the path of travel of the rollers around the can
upper end ina split bearing formed as a’ semi- `
circular boss I3 in the housing. The sleeve is 30
Another object is the'provision in a mechanism
tightly clamped in the bearing by a bearing cap
of this character wherein the seaming rollers
I4 which is formed aspart of a housing cover4
may- be adjustably moved into alignment with having a depending skirt portion I5 which en
the 'can contour following- rollers and 'the aligned closes the front and sides of the entire seaming
35 rollers moved as a unit in respect to the contour «mechanism The headsleeve is vertically sup 35
of a. can to be seamed without dísassociation from ported in its bearing on a ñanged nut i6 which"
the controlling means and yet permitting move-- .threadedly‘ engages the upper end of the sleeve
and which is screwed tightly on top of- theboss
ment between the rollers relative to each other.
Numerous other objects and advantages of the
and head
cap I4.l
sleeve . l2 extends
Y. down through
i 40
,40 invention will be apparent as it is better under- ‘ 'I3.'I'he
stood _from the following description, which; - movable parts of the 'seaming head and at its low
i er end is formed Hwith a laterally extending ñange, '
taken in connection with the accompanying draw
ings, discloses a preferred embodiment thereof.
Allïieferringto the drawings:
i8. A stationary pattern cam I9 having a. cam
track 2l is held on the bottom face of the 'head
sleeve ñange ‘for guiding seaming rollers lin a
Figure 1 is 'a fragmentary vertical sectional
path 4of travel around a`can to be. closed. '
view of a can closing machine showing'sin cross
The cam is held on the ñange by a cam Isleeve
section'a seeming head embodying the instant:invention;
Fig. 2 is a horizontal sectional .view o_f the seam
jing head taken lsubstantially' along the broken
22 which isV .centrally disposed inside the _head
sleeve. i2. The lower` end or the cam sleeve‘ls'
- threadedly-secured vin the 'cam at its center while
the upper end of the sleeve is‘provided with an
enlarged head 23 which rests on top of the up
Fig. 3 is an elev tion of a detail of the seaming per exïd of the head sleeve l2 for vertically sup
head as viewed s bstantially along the line 3_3. porting .the cam. By turning the' head 23 the
in Fig. 2, _parts being broken away;
cam is drawn up into tight fitting engagement z55
line 2-2 in Fig. 1, parts being broken back;
v 2
with the head sleeve ñange I8, the cam being
properly located on the flange by dowel pins 24 l
carried by the latter.
A chuck. 26 is secured to the bottom of the
cam I9 for cooperative action with 'the seaming
Vrolls in performing the seaming operation and
for locating and assisting holding the cam and
can end to be seamed. The shape or contour of
this chuck is the- same as the shape of the can
10 and likewise the shape of the cam track 2| is of
the same shape. .These contours are rectangular
in form for a rectangular can.
For a circular
can these. contours would be circular.
For holding the can there is provided a lift
plunger 3| which is mounted on the upper end of
a stem 32, having vertical sliding movement in
a bearing 33, formed in a web 34, which projects
outwardlyfrom the housing I I and which extends
under the seaming head.` The stem is raised and
lowered in timed relation with the other movingparts of the machine by any suitable and well
known means. Such a plunger supports a can
35 on which a cover or end closure 36 has prefer
. A
extends down over and spaced'away from the sta
tionary cam |9.
The head frame 55 carries devices in which the
seaming rollers are mounted and which move
them into and out of engagement with the can
and cover parts while they are moved around the
can`contour guided by the pattern 'cam for ef
fecting the seaming operation.
There areitw'o
sets »of these devices, identical in construction
and simultaneously actuated but disposed dia 10
metrically on opposite sides of the can.
it is thought necessary to fdescribe only one de
vice in detail.
I The device comprises in part a horizontally
disposed pattern cam arm_ 6| (Figs. 1, 2, 4, 5, 6
and '1) which is formed at one end with a verti
cal pivot sleeve 62, and this sleeve is mounted in
a bearing 63, which projects inwardly from the
vertical wall 59 of the head frame 55. The
sleeve is held in the bearing by a nut 64 (Fig. 5)
which' rests on the bottom of a recess 65 formed
in the top of the. bearing and which threadedly
ably been loosely applied. As the can and coverl
are raised with the rising plunger, the cover is
engages a shouldered upper end of the sleeve.
The free end óf _the arrn`6| carries a cam roller
61 (Fig. A7) which is rotatably mounted on a
pressed against `the chuck 26 in the usual man
bushing 68 with its lower end in engagement
ner, the can and cover being clamped stationary
between the chuck and the plunger throughout
with a shoulder formed by an enlarged de
pending'skirt portion 69. It is this roller which
is moved'in `the stationary pattern cam groove
the seaming operation.
The moving or rotating parts of the seaming ~ >by the rotating head frame for guiding the seam 30
head proper (Fig. 1) are carried on two separate ing roller around the can contour.' The roller is
sleeves, a head frame sleeve 38, mounted on the- held on the bushing by a spring ring 1| which
engages the top end of the roller and which is
vhead sleeve I2, and a seaming cam sleeve 39
mounted on the sleeve 38. The sleeve 39 is disposed ‘in a groove 12 formed in the upper end
of the bushing. The bushing in turn isfadjust
journaled in a split bearing formed as a semi#
`circular boss 4| `in a web 42 ofthe housing I I. ably mounted on screw threads 13 formed von a
A bearing cap`rmed in the` skirt |5 holds the stud 14 which is riveted into the end of the pat
tern cam arm 6I.
sleeve 39 in the bearing and thus provides a sup
v The cam roller 61 engages within the pattern
port for all 'the sleeves and for the lower end of
cam track 2| and is provided with upper and 40
the seaming head.
The upper end of the sleeve 39 is formed with ' lower converging tapered surfaces 16, 11. These
a lateral extending flange 45 which rests von top surfaces engage Y .with correspondingly tapered
of the split bearing and which carries a gear 46. surfaces 18, 19 formed in the cam track, the sur
The lower end of the sleeve extends below the y facev 18 being formed in the outer track, while the
surface 19 is formed on the inner track, the
45 bearing and is keyed to a barrel cam 41 which is
continuously rotated bythe gear 46 and which en- ~ angles of inclination of all the tapers beingequal
gages with the under side of the bearing thus yfor a purpose hereinafter explained.
A seamingroller arm 8l is disposed below the
preventing vertical movement of thesleeve. The
pattern cam arm 6| and moves with it.. At one
cam 41 is held in this position against the bear
50 ' ing by a collar46 which is disposed in a recess 49 y end, this arm is formed with a` bore 82 the edges
of which form a bearing which is mounted on a
formed in the lower end of the cam, and which
threadedly engages thelower end of the sleeve 39. pivot shoulder 83 of a hollow cap 84. T_he cap is
'I'he upper end of the head'irame sleeve 38,v
like the _seaming camjs'leevel Y39, is -also provided
with a laterally extending ñange 52 which restsl
on top of the gear 46, and which in turn carries
secured to the -bottom face ofthe arm 6| by~
screws 85 (Fig. 4) and held in spaced relation
vthereto by spacer blocks 86 which surround the
screws. In this manner the cap supports‘the
a gear 53.
- seaming roller arm and holds it against the bot
This lattergear isprovided with a
'central'hub 54 which encircles-the head Vsleeve I2
tom vof the cam arm while at the same time pro
and which extends up into engagement with the viding a pivot for the former which is coaxial
, .
under side of the bearing I3 and cap I4. This with'the sleeve 62 of the latter.
The opposite or free end of the seaming roller
construction prevents vertical end play of vthe
. arm 8| is bifurca-ted as at 88 (Figs. 4 and 7) and
head frame sleeve 38 on the head sleeve l2.
The lower end of the.head frame sleeve_38 ex
» -carries a stud 89 on which is mounted a seaming
roller 9|, the central axis of the stud. and roller
tends below the lend of the cam sleeve 39 and « being _in direct alignment with the central axis of
terminates in a shouldered end which carries an the cam roller when the former is directly under
inverted dish shaped head frame 55. The head ' the latter.
frame is continuously rotated by the gear 53
The seaming roller arm 8| and the cam roller
. through the sleeve connection and comprises a
arm 6| lare adapted to be moved about their com
70 central hub 56 which is keyed to the end of the -mon pivot point as a unit and yet at times they 70
sleeve 38 and is held in place by a collar 51, ' are capable'of having movement relative to each
which threadedly engages the extreme end of the other. For this purpose the free ends- of the arms
sleeve 38. The hub is formed with a horizontal' are yieldingly tied together by a coiled spring 93
disc shaped plate 58 which merges at its outer
periphery with a depending vertical wa1l59 which
(Figs. 1, 5 and`6). Onel end of the spring hooks
over a pin 94 which is secured in the end of the 75
’ 2,130,518
seaming roller arm and the other end passes
pivot shaft |32 which is carriedtin bearings- |33
through a swivel block 95 which is mounted in a . formed on the top of the wall 58 of the rotating
lug 96 formed as a part of the cam roller arm 6|.` head frame 55. Intermediate its ends the lever ,
Movement of the arms relative to each other as
when moving thel seaming roller into and out of
seaming position, is effected by a wedge slide ||l|
(Figs. 5 and 6) which is horizontally disposed in
a channel |02 formed in the bottom of the cam
roller arm 6|. The wedge slide is held against
10 vertical displacement between the top of the
channel and the top of the seaming roller arm 8|.
The forward end of the wedge slide is formed in
a blunt wedge |03 (Fig. 6) the side walls of which "
merge into a pair of parallel wall sections |04.
15 These latter sections extend into outwardly pro
jecting cam protuberances |05 which form an
enlarged part on the sides of the wedge slide. l
This step form of the wedge slide eiîects a wedg
ing action when the slide is moved longitudinally.
20 Adjacent one side of the wedge m3 a fixed pin>
|||1 is secured in the top‘of the seaming roller arm
8| and carries a roller |08 (see Fig. 8 also). The
channel |62 in the arm 6| is cut out in a recess
|09 to provide clearance for thisv roller.
On the opposite side of the wedge |53 a roller
||| is mounted on a pin ||2 which is carried in a
lug ||3 formed as an integral part of a plate IM.
The lug extends through the side wall ofthe
channel |02 in a slot H5 cut in the cam roller
30 arm 5| (see also Fig. 6). The plate is secured to
the outside of the arm,- one end being held in a
carries a shouldered' stud |35 which is locked in
position by a nut |36. One >end of the stud ex
tends beyond the -lever and carries a cam roller
|31 (Fig. 2) which engages within a cam groove
|38 `of the cam 41. It is the rotation of this cam
which actuates the lever |3|, the plunger |24
Vand wedge slide lill to move the seaming roller 10
into seaming position.
The rotations'of the seaming cam d1 and the
head Íframe 55 are effected by what is commonly
known as differential gearing, which include the
gears 46, 53 hereinbefore brieñy referred to. The 15
gear 53 meshes -with a gear |4| (Fig. 1) which is
mounted on a vertical continuously moving shaft
|42, »journaled in a bearing M3, formed in the
ëigusing || and a bearing IM formed in the web
The gear 46 meshes with a gearl d5 mountedl 20
on the shaft id! just below the gear Mi.
The gears Mi, |135 are rotated at a uniform
speed but the gear 45,_being larger than the gear
53 revolves at a slower speed than the gear 53 and
the effect is a retarding movement of the cam d1 25
relative to the revolving head frame 55; In one
complete cycle of operation for completing the
seaming of a single can, the cam rollers |31 are
caused to traverse one half way around the groove
|38 in the cam 41.
The shape of the camgroove .|38 is such as to
tight ñtting groove | |6 cut in the lug 95 while its -move the wedge |03 forward between the rollers
other end is held by an adjusting screw || 1 which ï Hi8, ||| causing them to move 'apart and ride up
passes through the plate and is threadedly en
on thegparallel surfaces mi. This action effects
gaged in the arm. This construction permits of the relative movement between the arms 8|, 5|, 35
adjustment of the roller |||_relative to the cam which brings the seaming roller directly under the
arm 6| thereby providing‘a means of shifting the cam roller and into seam closing position against
seaming roller arm di relative to the cam arm in the can and its cover iianges to form the seam as
order to bring'the seaming roller~ into axial align
shown in Fig. '7. In this position the `seaming
ment with the cam roller. .This adjusting or set-` roller is in axial alignment with the cam roller
ting of the seaming roller into its proper position and remains in this position throughout the en
is done before actual operation of the machine ' tire seaming operation, being guided around the
can in this alignment by the cam roller 61 travers
Relative movement of the arms 6|, 8| in one ing the pattern cam groove 2|. In this manner,
direction, moves the seaming roller into seaming with a simply constructed pattern camv having the 41.5
position.' This action is effected by a forward same shape as the can and cover contour and with
movement (to the right) of the wedge slide ||l| the seamingroller always in alignment with the
which moves the wedge VH13 between the rollers cam» roller during the seaming operation, the
|08, |||, causing them to ride up on the step wall., seaming roller is compelled to follow the exact
|55 and to thereby spread the arms apart or‘shift contour of the can and cover and hence a proper 50
them relative to each other against the resistance seam, especially at the can corners in the case of
of the spring 93 and into the position of Fig. 6. non-circular cans, is effected.
v '
For this purpose the wedge slide |0| at its _rear
To. compensate for wear in the seaming roller
end, i. e. opposite to the wedge en_d |03, is en
and still maintain the proper axial alignment be
larged and is provided with atapered cam slot tweenthe seaming roller _and cam roller, an ad 55
|2| (Figs. 5 and 6). The slot is disposed adja
justment is provided whereby the arms 6| , 8| may
cent the central axis of the cam roller arm sleeve
S2 and engages with an angularly positioned cam
ilnger |22 having tapered surfaces |23 which cor
60 respond and engage with the tapered surfaces of
be moved as a unit relative to the cam groove 2|.
This is effected ‘c_y an adjusting screw |46 (Figs.
4, 6 andj?) which is carried in a bore |41 formed
in a boss |48 of the cam arm 6|.
One end of the
the cam slot. The cam vfinger is formed on the
bottom of a vertical plunger |24 which is slid
screw i's provided with a head which is formed
with a collar |49 which engages the end of the
ably disposed inside the sleeve 62.
-boss and a reduced slotted part |5| which extends
The plunger is moved up and down in the sleeve ~ beyond the collar where it is readily-accessible for
65 to _actuate or impart a b'ack and forth movement l adjustment oi’ the screw by means of ‘a suitable
"to the wedge slide IM. For this purpose the tool. This part' of the screw head’ projects
plunger extends above thel top of the sleeve and .through an opening |52 in a plate |53 which is
carries a collar -|25 which is secured in Úlace by held in engagement with the collar and the end of
a screw |26. The collar is termed with an annu
the boss by a screw |54 (Fig. 6), thus holding the
-70 lai- groove |21 which is engaged by a pair of roll- screw within .the bore against longitudinal move
ers |28 mounted on the inner'ends of pins |29 . ment.
carried in the bifurcated end of a lever |3| (Figs.
'I'he opposite endo! the screw |46 is threaded
2, 3 and' 5).
', and engages with worm teeth |55 (Figs. 6 and 7)
The lever is disposed adjacent the seaming- cam ' formed in the skirt 69 ofthe cam roll bushing 58.
75 41' and at -its'oppositeA end it is mounted on a ‘ By rotating the screw the, bushing maybe turned
< on the screw threads 13 of the'stud 14 and thus
raise or lower the cam roller in its track 2|. Ad
justment of the cam roller in this manner shifts
its axis transversely -of the groove along its
tapered surfaces and simultaneously shifts both
ally aligning said rollers, and adjusting means for
shifting said cam roller in said. cam track for
moving said arms laterally as a unit relative to
said can and cover for effecting a like relative
arms 6|, 8| as a unit moving the seaming roller
lateral movement of said seaming roller while
maintaining its axial alignment with said cam
toward or away from the chuck 26 as the case
may be.
' _
2. In a. seaming head for uniting can covers to
can bodies, the combination of a seaming roller
After completion of the seaming operation the
10 seaming rollers are withdrawn to enable removal
of the closed can. At this time the cam groove
|38 moves the plunger |24 upward and causes the
cam iinger |22 to slide thevwedge slide |0| rear
ward. This action withdraws the wedge |03 from
15 between the rollers |08, | I I so that the rollers ride
oiï the steps |04. This shift in position also
moves the protuberances |05 into engagement.
with a pair of pins i6| , |52_and causes thepins to
ride upon the protuberances. These pins are dis
20 posed one on each side of the wedge slide |0| (see
Fig. 6), the pin |6| being engaged in the upper
arm 6| (Fig. 9) while the pin |62 is engaged` in
the lower arm 8|. Engagement of the pins by
the protuberances |05 spreads or moves the pins
apart causing a relative movement between the
arms in a direction opposite to that hêreinbefore
arm, a seaming roller on said arm for interfolding 10
a part of a said can'and cover, a cam roller armJ
associated with said seaming roller arm, a cam
roller on said arm, ay cam track for guiding said
cam roller and said seaming roller relative to ro
tation between said rollers and said can and cover, 15
means for adjusting said seaming roller arm rela
tive to‘said cam roller armifor axially aligning
said rollers, adjusting means for shifting said cam
roller in said cam track for moving said arms
laterally as a, unitrelative to said can and cover 20
forieñ'ecting a like relative lateral movement of
said seaming roller whilemaintaining its axial
alignment with said cam roller, and means for
moving said seaming' roller arm independently of
said cam roller arm to dis-align said rollers to
permit positioning of a can and cover to be
mentioned. This movement of the slide aided by Seamed and for realigning said rollers to effect
the spring~93 draws the arms 6|, 8| toward each the seaming operation.
other and thus positively withdraws the seaming
3. In a seaming head for uniting can covers to
30 rollers from seaming position. This action shifts can bodies, the combination of a stationary chuck 30'
the seaming roller out of alignment with the cam for holding a can and cover to be searned, a head
roller which disalignment is maintained until the ’frame having rotative movement around said
seaming roller arm isagain moved into seaming ' chuck, seaming devices including a seaming roller
carried o_n and rotating with said head frame,
The closed can is now removed from the chuck contour following devices including a tapered cam
26 by the lowering of the lift plunger 3|. 'This roller also carried on said rotating head frame v
v removal is assisted by a knockout pad |65 (Figs. 1 and cooperating with a stationary ’tapered cam
and?) which normally is housed witliin a recess ' track for guiding said seaming dew'ces around the '
|66 formed in the bottom of the chuck. ÍThe pad
contour of said_ can and cover, means for adiust
ing said~seaming devices relative to said` contour 40
which extends up throughthe center of thé chuck following devices whereby the rollers will be in
26 and cam I9 into the cam sleeve 22 where it' >axial alignment for the seaming operation, auto
joins with a rod |68 by means of a tongue and matic means for moving said seaming roller rela
is carried on the end of a vertical rod |67 (Fig. 1)
groove connection |69. The upper end of the rod tive to said cam roller and towards and away from
45 |68 extends beyond the sleeve 22 and may be actu- ` said can cover 'while' rotating with said head v45
ated by any suitable means .operating in time with
frame for effecting the seaming operation, and
adjusting means for shifting said roller andgsaid
the other moving parts of the machine to strip
the closed can fromthe chuck.
The description of one seaming roll and asso
ciated cam roll mechanism applies equally as well
seaming roller as a unit relative to said chuck
while still maintaining the rollers in ,their axial
to the other seaming and cam roll mechanism,_
4. In a seaming head for uniting' can covers
to can bodies, the combination of a can support
for holding a can and cover during a seaming
there being usually a ñrst and second operation
seaming roll -needed, to produce the well known
double seam between can body `flange and cover operation, a head frame having rotative move- .
» ment relative to said support and the can and
cover carried thereon, a seaming roller arm car
rying a seaming roller for seaming said cover to foregoing description, and it will be apparent that - said canfa cam 'roller arm associated with said
various changes may be made in the form, con
seaming,l roller a‘rm and carrying a cam roller, a
” It is thought that the invention and many of its
attendant advantages will be understood from the
struction and arrangement of the parts without stationary cam track in which said cam roller
departing from the spirit and scope of the inven-V 'operates’for guiding said seaming r'oller, around
tion or sacrificing all of its materialadvantages.,> the contourvof said can and cover,v means for ,
the form hereinbefore -described'being merely a' axially aligningdsaid rollers for the seaming op~
preferred embodiment thereof. '
I claim:
1. In a seaming head for uniting can covers to
can bodies, the combination of a seaming roller
`arm, a seaming roller on said arm for interfolding
parts of a said can and cover, a canr roller arm
70 associated with said seaming’roller arm, a cam
eration while still‘permitting relative movement
`~ between them, and adjusting means operable at 65
will for shifting said cam roller in said camy track
for moving said arms as' a unitV relative'to said
can and cover while maintaining the axial“ align
ment between said rollers.
5. rIn a. seaming head fó? uniting container 70
roller on said cam roller arm, a»cam track for' lcovers to container bodies, the combination o_f ‘a
guiding said >cam roller and'said seaming roller
around a. path coincident with the contour of said
can and cover, means for adjusting said seaming
roller arm relative _to said cam roller- arm for axi
seaming roller for interfolding parts of the con
tainer and cover, a cam roller associated with
said seaming roller and adapted to movey in a con
trolled path relative to saidïcontainer and cover,
a cam track for producing the controlled guiding
of said cam roller, and means for adjusting said
into alignment with said cam roller for-perform
ing the seaming operation.>
rollers 'as a unit relative to said cam track so as
`8. In a seaming head for uniting cancovers to'v
to eñ‘ect a lateral adjustment of said seaming
can bodies, the combination of a seaming roller-
- 6. In a seaming head for uniting can covers to
arm, a seaming roller on said arm for interfolding 5
parts of a can and cover, a cam' roller arm`
can bodies, the combination of a seaming roller
for interfolding parts of the lcan and cover, a cam
associated with said seaming roller arm, a cam
-roller on said cam roller arm, a cam track for
roller associated with said seaming roller and
guiding said cam roller and sai‘d seaming roller
adapted to move in a controlled path of travel - relative to rotation between said rollers and said
relative to said container and cover, a tapered can and cover, and means for adjusting said cam
cam track for guiding said cam r‘oller, and means roller in >said cam track for moving said arms
for adjusting said cam roller in said tapered cam » laterally as a unit relative to said can and cover.
track to laterally adjust said rollers as a unit
9. In a seaming head for uniting container
15 while maintaining axial alignment therebetween. covers to container bodies, the combination of a 15
7. In a seaming head for uniting can covers to seaming roller for interfolding parts of the con
can bodies, the combination of a sea'ïning roller tainer and cover, a cam roller associated with said
for interfolding parts of the can and cover, >a seaming -roller, means for moving the cani roller
cam roller movably associated with said seaming and said seaming roller around said container and
20 roller, a cam track for guiding said rollers as a cover, a cam track" for guiding said cam roller, 20
said cam track having/,inner _and outer tapered
unit around said can cover, means for adjusting
portions disposed in parallel relation, and means
said seaming roller into axial alignment with said _ for adjusting said cam roller relative to said cam
cam roller, means for adjusting said aligned roll
ers as a unity relative to said cam track so as to
track in a direction substantially parallel to the
llongitudinal axis of the container body whereby
effect a lateral adjustment of said seaming roller to eifect a lateral adjustment of said seaming
in respect to said can and cover, and means for roller.relative to said container body.
laterally moving said seaming roller out of and
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