US934921A - Head-seaming mechanism for can-bodies. - Google Patents

Description

L. o. KRUMMBL. HEAD SEAMING MBGHA'NISM PQR CAN BODIES.

APILIOA'IIION FILED NOV. l2, 1908. 934,921 Patented SeptfZl, 1909.

a SHEETS-SEEE; 1.

IMM.,

"Zi j@ L. C. KRUMMEL; HEAD SBAMING MEGHNISM EORUAN BODIES.

APPLICATION FILED NOV. 12, 190B.

' Patented Sept. 21, 1909.

3 SHEETS-SHEET 2.

Suma/toa null LOUIS C. KRUMMEL, OF

CLINTON, CONNECTICUT. y

HEAD-SEAMING MECHANISM FOR CAN-BODIES.

Specification of Letters Patent. lPatented Sept. 21, 1909.

Application filed November 12, 1908. Seriall No. 462,229.

' linton, in the county of Middlesex, State of Connecticut, have invented certain new and useful Improvements i'nHead-Seaming the center rod. Fig'. 7 is a side viewof the 't-heseaming head= is a similarvie'w with the head- 1n positionr l'lechanism's `for Can-Bodies, of which the following isa description, `reference being had to the accompanying drawing, and to the letters and figures of reference marked thereon. g

The invent-ion relates-to new and useful improvements 'in head seaming mechanisms for cans and other receptaclesof the type wherein a sanitary can may be produced; v. c., a can having its top secured to the can body solely by crimping and seeming, commonly known as a double seemed can. VIn the present machines of this type, the candnring the closingv operation,` is either revolved, lifted or otherwise moved. The movement of the filled can often causes a spilling` of thecontents, which soon causes an unclean and unsanitary condition of the apparat-us andA is objectionable in many Ways.

The primary object of the invention is toprovide a seaming head that .will permit of seeming the cover on to the body of a filled can without either revolving or lifting thevcan, or moving. the same in 'any way. l-t is obvious, however, that theA invention in its'broader aspects. is capable of -other uses.l It also obvious that-'certain features of the invention, as lwill hereinafter be pointed out, are well' capable of use in machines wherein the can is rotated relative tol the'v seaming rolls 'czr-rI-'ier during "the closing operation. l

The invention consists in the parts, improvements and arrangements i hereinafter shown, described and pointed .out in the appended claims. i

ln the drawings which show by f'wayrof illustration one embodiment of the invennom-Figure 1- is a side View 'bfgavcan seaminginachlne'having my improved vseainin'gA head' thereon; F10'. 2 1s a sectional View of when expanded-glj`1g. 3

to finish flattening theseam; Fig. 4c is a side View of the seaining-head, showing the means for limiting the movement of one sleeve relative to the' other; and Fig. is a. sectional view on the linev 5-.5, of Fig. 2` Fig. (i a side view-of the cam for operating Qsockets at the low-erfendv of the pocketsfgmc cam for operating the shaft" which supports the seeming head.

In carrying. out my invention, I have herein shown a standard 11, 'on which is mounted and operated my improved closing head. Said. standard is providedv with a laterally projecting table 2, which is stationary, and which has `a smooth'. unbroken surface on which the cans rest during the closingoperation. Y

By providing a table of the above character, there are nopockets in which the content-s spil-led from thel filled cans may lodge, and, therefore, the table may be quickly and readily cleaned by wiping oli' the smooth unbroken surface of the same. i

The standard 1 is provided with laterally y projecting bearing lugs 2, 3, in which is mounted a hollow sh'aft Il, carrying at its lowerend my improved lseeming head. Said A seaming head comprises an inner sleeve 5, Which'is threaded on to t-he end of the hollow shaft 1, as clearly shown in lFigs. 2 and Said inner sleeve 5 is provided withl an outwardly extending flange 6, and with a downwardly extending cylindrical: portion 7. The head also comprises an outer sleeve 8, whichy is provided with a centralrecess 9, sot-hat said outer sleeve fits over the dependingcylindrical portion 7 of the inner sleeve.

The outer sleeve, as shown in Fig. '5,l is also provided with segmental pockets or recesses 1,6, 10. Located with-in the pockets 10,- are,v as herein shown, two bolts l1 'and l2. Said bolts 11 and 12 extend up throughA 5.A The `bolts 1l and 12 are threaded'flto areprovided at their upper` ends with heads 13,14. The purpose of the'bolts 1l 'and 12:'

is to limit the movement ofthe outer sleeve away -from the inner sleeve. Buffers 15 .and 1=6surround the bolts 13 vand lit, and are locatedl in suitable recesses in the upper face of the inner sleeve.

If my' improved seaining head be located tically, the outer sleeve'fniay be moved away` from the inner. sleeve by the force of grave ity alone; norder, however, to insure thc expanding ii'my scaming head with certainty, I-`preferably provide' springs 17 and v18 (see Fig. 4f.) which are coiled about the bolt-s 111 and 12,-,and rest at one` end on the.

las shownin Fig. 1, sofas to operate .ver-

l l. (l

bottomf walls of the pockets 10, and at their other endssaid springs bear against the sleeve.

While I have shown herein two bolts serving to limit the movement of the outer sleeve relative to the inner sleeve, it is ob` vious that any number of bolts may be used, or other limiting means may likewise be used, if desired. 'The outer sleeve 8 carries the pivot bolt.

the levers which support the seaming rolls. 'llie lever 19 is mounted in a vertical recess in the outer sleeve on a pivot bolt' 20. 'I he sleeve is cut awayhorizontally at 21 (see Fig. 4), in order to allow the insertion of The lever 22 is. mounted in a similar ie'cessin the outer ringvon a pivot bolt 23. The lever 19 carries a curling roll 24, and the leverI 22 (as herein shown), carries 4a flattening roll 25. It will be obvious that instead of providing two levers, one carrying a curling roll and the other a flattening roll, that any desired num- Y ber of seaniing rolls may be provided.

The leverl 22 is provided with an outwardly projecting -stud 26, which engages an eye' in a rod 27, passing through a lug 28 extend ing from the side wall of the outer sleeve. A spring 29 surrounds the rod 27, and engages a nut 30 at the upper end of the rod 27.` The stud 26 is so located relative. to the pivot bolt 23, that the spring 29 serves to turnthe lever 22 and throw the lower vend thereof outward, while the upper end of the lever is thrown inward.L 'A similar spring is provided for the lever 19, which also holds the seaming roll 24 outward away from the can body. The inner sleeve 5 is provided with a cani 31, which is secured loosely to the inner. sleeve by means of a bolt 32. A rubber pad 33, or other suitable cushion device is located under cam 31 on the inner sleeve, and engages the rear side of the cam 31.

4 `The lever 22 is provided with a cam plate 34, which is pivoted by a pivot bolt 35 in a cut away portion in the inner face of the lever 22. A screw 36 serves as aineans for determining the vposition of the cam plate 34, relative to the lever 22. The cam surface of the cam plate34, coperates with the inclined face of the cam 31. As the inner sleeve is moved downward relative to the outer sleeve, the inclined face/of the cam 31 will force the upper end of the llever 22 outward against the action of the spring 29, and bring the seaining roll 25 into contact with the can. A cam,.37 is also secured to the inner sleeve by a bolt 38, which holds the cam 37 in a recess formed in the outerr face of t-he depending portion of the inner sleeve.

The lever 19 is provided with a latch cam i 39, which is pivotedto the lever 19 by a pivot ,bolt,40. A springl 4.1 secured at one end tothe latch cam 39 and at its other end i inclined face 44, said cam is cut away. When the inner sleeve is moved downward relative to the outer sleeve, the inclined face 44 will engage the camv latch 3,9, and crowd the upper end of the. leverv 19 outward and 'against the actionof its spring, and thus force the seeming roll carriedthereby 'into contact with the can. As soon, however, as the nose of the latch cam 39 reaches 'the cut away portion of the cam 37, the spring 2,9 will move'tli'elever 19 so as to move the seaniing roll out of contact Wit-h the can top.

When the seaming head is expanded, and the outer sleeve moved away from the inner sleeve, the cam latch 39 will turn about its pivot, so that said latch inay pass the shoulder on the cam 37.

Coperating with the seaiiiing .rolls is av .chuck 45, which, as herein shown, is threaded on to a chuck shank 46, extending up through a central opening in the outer sleeve 8. The chuck shank 46 is .provided with a bearing head or flange 47 at its upper end. Ball bearings 48 are interposed betweenthe chuck and the outer sleeve, so that the outer sleeve may rotate freely u on the chuck shank and chuck. The chuc however, will be moved toward and from the inner sleeve with the outer sleeve. Centrally of the chuck is a center pad 49, which is so shaped as to fit within a' recess iir the lower face of the .chuck 45. The center pad 49 is rigidly secured to a center rod 50 4which extends up through the hollow chuc shank and up through a central opening in the inner sleeve 5, and through the hollow shaft 4,

which supports the seaming head. 'llie chuck shank is vconnected to the center rod 50, by means of a groove and spline connec' tion 51. This spline connection between the" chuck and limits the downward movementv thereof, as will be hereinafter more fully described.

It will be noted that the center rod is not only supported by the inner sleeve, but through the chuck shank it is also supported by the outer sleeve, and I have by this con# struction provided a .head which is very steady in operation.y

The center rod 50, near its upper end is threaded into a sleeve 53, which is pivoted between the outer forked ends of a lever 53, carried' by a bearing 5,4in the. standard of the machine. The otherA end of thelever 53 carries a roll 55 rnnningin a. cam groove 86 "in the face of a rotating cain57a. Saidl rotating cam is carried by a short shaft 56' opei'ated by the Worm gear 57, which gearsV with a worm on a shaft 58 which in turn is driven Iby the main shaft 59.-

The' hollow shaft 4 which supports the` ciprocate the hollow shaft 4 carrying 4the sea'ming head. The seaming head is rot-ated by means of a gear 66, which is splined on to the hollow shaft 4 and coperates with a gear 67 carried by the end of the shaft 58.

'The cams carried by the shaft 56 are so constructed, that in the operation of my dcvice, the center pad 46 is first Vmoved down on to the cover of the can which is to be closed. This downward movement of the center pad may be adjusted by turning the hand wheel 68 at the upper end of the center rod. lSaid center rod is threaded ,intoV vthe' sleeve and by rotating the hand wheel 68tlic center rod may be moved upand down in said sleeve. lVhen the parts are properly adjusted, the center pad will come down onto thel can, so as to hold the same lightly but firmly, on the supporting :tablel 2. After the center pad engages the top of the can., the lever 63 is 'then operated so as to lower the seaming head.. This movement ofthe center pad down oii'to the cover inadvance of the seaming head serves to properly place or seat the cover on the can body, whereby a perfect joint may be made. The inner and ou'ter sleevestirst move down together until the chuck engages the slioulderx52 on the center pad, at which time lthe lower face of 4the chuck is substantially -iiush with the lower face of thecentei" pad,

and fthe chuck properly positioned on the cover orI top of thel can. Further downward movement: of the vouter sleeve is thus prel` vented by the center pad, and athef'inner sleeve continues its downward movement,

coni'iressinffv the s rinffs 17 and 18, located l n p a:

between lthe inner and outer sleeves. The caml 3 7' first contacts with,y the/ am 'latch 39 so as to swingJ the lever/ 19 n d move the curling roll '24 into engagement Iwith tire headsof the can top and they edge of the-can It shouldbe'borne in' mind that the 'seaming head is rotated continuously-bythe bev-" eled gears 67, 66. The centetrot," however,

is stationary, and inasmiicli as the chuckis" splined thereto, it. also is stationary. Asl

soon as the -iiiner sleeve hasdescended sufficient-ly to complete the curling of the edges of the can top and can body, the cam latch passes into the cut away portion in the cam 37,'-and the spring at once swings the lever- 19 so as to bringfthe curling roll out of engagement with the edge of the can. The cam 31` meanwhile has been swinging the lever 22 vso that the fiattening roll carried thereby is brought into contact with the curled edges of the can, and the seam fiattened and finished. The downward in'ovement of the inner sleeve is just sufficient, so as to properly finish the closing 'seam when the lever 63 is swung in the opposite direction and fthe sea-ming head raised.

During'the first part of the upward movi mentof the seeming head, the inner sleeve moves out of the kouter sleeve, and the chuck remains in contact with the top of the can. The seeming rolls are moved 'out of contact .with the edge of the can by the springs which 'control the same. lVlien, however, 'the' outward extending flange 6 of the inner sleeve 5 engages the heads of the bolts 13 and 14, the movementof the inner sleeve relative to the outer sleeve ceases, and the outer sleevev is then moved with the inner sleeve. rl`his movement of the outer sleeve liftsl the Achuck ofi' from the top of the can. The'lever for operating the center pad lis so vcontrolled. by its cain that the center pad still rmainsin contactl with the cover or 4top ofthe can-until after the chuck is raised to'a positiony shown in Fig. 2. The center pa'd will, therefore, operate to strip the can from the chuck, should the closing of the seam bind the can top on the chuckf l During 'the entire operation of closing the seam, the can is stationary, for theK reason that the center pad which has no rotating movement, iisii'st moved down onto the can cover, properly centering, seating and holding the cover, and then the chuck which also has no rotating movement,` is moved down on tothe can top. The friction be- `tween the edfreof the can top and the chuck,

due to the closingof the seam, is a sliding friction. That is to say, if there is any r'movement between the can and the chuck,

the can must Slide on the chuck. The friction -dueto the rotating parts, (i. c., his closing rolls), is a rolling friction, and it is well known that a sliding friction is very "much greater than a rolling friction, and,

therefore, the can will be held stationary by the stationary center pad and chuck,

' while theseaming head Vrotates about the can.

I have/found in practice, that it is not necessary/io make the chuck fit with great.

accuracy into the top ofthe cover, but 'that there may be consider: le clearance between, the chuck and them. r face of thc can top,/r

and still the sliding friction between the can and the chuck will prevent the rot-ation of the can relative to the chuck. rlhis is of considerable importance, for the reason that it' it were necessary lto have the chuck of eX- actly the same size as theinner face of the cover, the chuck would soon wear so as to be too small to properly operateito hold the can. lVhile I have described my invention a particularly adapted for 'closing a can which is absolutely stationary during the closing operation, it \vill readily be seen that the connection herein shown between the center rod and the shank of the chuck, so that lthe chuck and the centerA rod have n'o rotating movement relative to each other, would be of great value in lthat type'ot' machine where the can rotates, and the seaming rolls are stationary, as the rotating chuck and center pad would rotate the can with little or no slipping, and after the can is closed the center' pad would readily operate to-strip the can from the chuck. So far as these features of the invention are concerned, I do not, therefore, desire-to be limited tothe use of my invention, for the purpose of closing a can without -giving tothe can any movement.

By my improved device, wherein the chuck and center pad are stationary and-move down one after the other onto the can, I have found that it is not necessary to clamp vthe can in any way on the table. Suitable guides may, if desired, be placed on the,

table, in order to locate the can centrally under the seaming head. Instead of placing the can byhand under the seaming head, automatic means may be devised for feeding the cans one after another under the seaming head. The particular way of placing the can under the seaming -head is no part'ot` the present invention, and it should be distinctly understood that my improved seaming head may be used in connection with any desired feeding mechanism, or the cansl may be fed thereto by hand, it' desired. By adjusting the screw 3G, it will be obvious that the pressureof the fiattening roll on the seam may be varied. The'cushion 33' serves to .relieve the strain on the flattening roll when passing over side seams or the like.

It will be obvious that minor changes in the details of construction may be made without in' any way departing from the spirit o'f-my invention, or sacrificing its principles.

Having thus described my invention, what I claim as new and desi-re to secure by Letters Patent, is

l. A seaming head including in combination, a rotaryzspindle, an innersleeve carried thereby, an outer sleeve located beneath said inner sleeve, and havinga' recess adapt-` ed to' receive said inner sleeve, seaming rolls v .carriedkby saidouter, sleeve, a ehuckcarried by said outer sleeve, and meansfor holding said chuck from rotating with said outer sleeve. e

2.' A seaming heady including in combination, a rot-ary spindle, an inner sleeve carried thereby, an outer sleeve arranged below said inner sleeve and having a recess adapted to receive said inner sleeve, seaming rolls carried by said outer sleeve, a chuck, a chuck stem carryin said. chuck, said chuck stem being journa ed in saidgouter sleeve and.

means for preventing said chuck from rotating with said outer sleeve.

3. A seaming head including in combination, a rotary spindle, an inner sleeve carried thereby, an outer sleeve arranged below said inner sleeve and having a recess adapted to receive said inner sleeve, a chuck, a chuck stem carrying said chuck, said chuck stem being journaled in said outer sleeve,` ball bearings between said chuck and said outer sleeve, means for holding said chuck from moving longitudinally relative to said outer sleeve, and means for holding said chuck from rotating with said outer sleeve.

LA seaming head including` in combination, a rotary spindle, an inner sleeve carried by said rotary spindle, an .outer sleeve mounted `below said inner sleeve and having a recess adaptedto receive said inner sleeve,

said outer sleeve having radial recesses formed therein, levers pivoted in said radial recesses in the` outer'sleeve, seaming rolls carried by said levers and means for swing- Cing said leversn about their pivots, whereby the seaming rolls are operated.

5. A 'seaminghead including in combination a rotary spindle, an inner sleeve carried thereby, an outer sleeve mounted below Asaid inner sleeve andL having a recess adapted lto receive said inner sleeve, said outer sleeve having radial recesses formed therein, levers pivoted in said radial recesses, 'seaming rolls carried by said levers, and cams carried by said inner sleeve and cooperating with said levers. p

6; A seaming head including iii combina.- .tion`, a rotary spindle, an inner sleeve. carried by said rotary spindle, an outer sleeve mounted beneatlusaid inner sleeve, and havl i ,sleeveyacenter rod extending through said bolts tor limiting the movement of said outer sleeve, seaniing rolls carried by' said outer sleeve, a chuck, means whereby said chuck is journaled in said outer sleeve, and means tor holding said chuck from lrotating with said outer sleeve. v

SMA seaining head including in combination, a rotary spindle, an4 inner sleeve threaded to said rotary spindle, an outer sleeve mounted beneath said inner sleeve and having a recess adapted toreceive said inner the flattening roll.

slee-ve, Asaid outer sleeve having radial recesses, levers pivotally supported in said recesses; in the outer sleeve, .seaming rolls carried by said levers, cams carried by said inner sleeve and cooperating with said levers, a center rod, means for holding said center rod from rotating with the seaming head, al chuck, a spline for connecting said chuck to said center' rod whereby the same may move longitudinally on said center rod, and means whereby said chuck is journaled in said outer sleeve. ,v

il). A can seaininghead including in combination, a plurality of seaming rolls, opel'- ating levers therefor pivoted to saidhead, a

vcam slide for actuating said operating levers,

cams carried by said slide and engaging said levers, a cushion for yieldingly supporting the operative end, of the cam-which operates 11. A can seaniing head including in'com` bination, a seaining roll, a 'pivoted lever carrying said seaming roll, 'a cam slide for actuating said lever, a cam carried by said slide, a cam plate carried by said cani slide, and means-for adjusting the position of said .cam plate.

12. A can seaming head including in com` bination, a seaming roll, a pivoted lever carrying' said-seaming roll, a cam for operating` said pivoted lever, means for supporting and movingA said cam relative'to said lever, a rod connected to said lever, a perforated lug carried by, said head through which said rod extends, a spring surrounding said rod and operating to hold thel pivoted lever in contact with its operating cam.

13. A can seaming head including in com` bination, a seaming roll, a pivoted lever carrying said seaming roll, apivotedlatch cam carried by said levr, a spring normally holding said latch cani on its seal in the lever, a cani slide, a cani carried thereby and coperating with said latch cam, and a spring for holding said pivoted lever in contact with its operating cam.

l. A can se'aiiiing head including in coinbination, an outer sleeve having` a central re.- cess, an inner sleeve fitting said central recess, and having an outwardly extending flange, pivoted levers carried by said outer sleeve, seaniing rolls mounted on said levers, cams carried by said inner sleeve and operating said levers, springs interposed betweenv said outersleeve and said inner sleeve, and means engaging said flange forA limit-ing thc movement of lthe outer sleeve relative to the inner sleeve.

15. A can seaining head including in coinbination, an outer sleeve having a central recess, an inner sleeve fitting said central recess, and having an outwardly extending fiange, pivoted levers carried nysaid outer sleeve, seaming rolls mounted on said levers, cams carried by said inner sleeve and oper` ating Said levers, spr1ngs interposed between .said outer sleeve and said inner sleeve, and l bolts carried by said outer sleeve and extending through openings in the flange of the inner sleeve, the heads of said lbolts opel-at` ing to limit the movement' of the outer sleeve relative to the ,inner sleeve.

16. A can seaming head including in conibination, an outer sleeve, seeming rolls car-l iied thereby, a chuck, means for connecting saidI chuck to said outer sleeve, wherebysaid outer sleeve inayzrotate freely Irelative to said chuck, a center pad located centrally otsaid chuck, a center rod connected to said center padvand extending upwardly throughi said clnick and outer sleeve, means for hold- 'ing said center rod `from rotatingwith said outer sleeve, and means for connecting said center rod to saidchuck, whereby said chuck is held from rotating relative to said center rod andsaid chuck is free to move longitu` dinally'on said center rod.

f 17. he combination with a stationary table on which the can is` adapted to restduring the entire seaming" operation, of a seaming head, mea-ns 'for reciprocating said seaming head, said seaming head includingseaming rolls, pivoted leversicarrying said seaming rolls, a cam slide, cams carried thereby and operating said 4pivoted levers, a chuck, means for' connecting said chuck to said seaming head, whereby it is reci procated therewith, and whereby said seaming head may rotate freely relative to said chuck, and means for positively holding said chuck from rotation.

18. The combination with a stationary table on which the can is adapted to rest. during the entire seeming operation` of a seeming head, means for reciprocating said sea-ming head, said seaming headincluding seaming rolls, pivoted levers carrying said seeming rolls, :roam slide, cams carried thereby and operating said pivoted levers, a chuck, means for connecting said.s chuck to 5 said seaming headJ whereby it is reciprooated therewith, and whereby )said seeming `head may rotate freely relative to said chuck, a Y

center pad, a center rod connected to said center pad, and a spline for connectlng sind chuck to said center rod, whereby said chuck l0 is held fromrotating relative to the center rod. l

In testimony whereof I allx my signature, in presenceL of two witnesses.

LOUIS C. KRUMMEL. Witnesses WM. G. BIssELL, EZRA VE. POST.

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