Патент USA US2130518код для вставки
Sept. 20, 1938. N. P.' BACH 2,130,518 . ÉEAMING HEAD Filed Sept. 3, 1935 5 Sheets-Sheet 2 _RigZ ` aff f” y* ,_ |\ /és $47 "` w, 753 @ U7 ` " @j ' INVENTO sept. 2Q, 193s. ' N. P. BACH f SEAMING ' HEAD 2,130,518` v Filed sept'. 3,' A1935' v . s sheets-sheet s 95 fé /5. .25' / 6/ 75. , » 2/3 ' .25 #9947/ ’.07 ‘ -. if . 18]. 'A L2?? ß ' / 2,130,518 Patented sept. ‘20, 193s 1 UNITED STATES PATENT OFFICE 2,130,518 o v ~ ‘ SEAMINGIIEAD 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. . - , y1_5 '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 30 contour. - » e . 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 ,_ Sthe 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. 45 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; 50 ' , - Fig. 2 is a horizontal sectional .view o_f the seam jing head taken lsubstantially' along the broken 45." _ - 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 aladinoT 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. Hence it is thought necessary to fdescribe only one de vice in detail. ì 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 43.fo`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 3 ’ 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. 25 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 35 45 50 55 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. ' ' 30 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 begins. . 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 60 4 < 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 I‘Ollèl‘. may be. ' _ î ‘ . 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. y 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 35 26 by the lowering of the lift plunger 3|. 'This roller also carried on said rotating head frame v position. ~ ' f ` 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 alignnï‘ent. to the other seaming and cam roll mechanism,_ ` . ~ Y 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- . 55 flange. ~ » , ' ' . » 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: . r i 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, 2,180,518 a cam track for producing the controlled guiding of said cam roller, and means for adjusting said v 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- 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 v10 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 25 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 NEILS P. BACH.