USRE14709E - Process of - Google Patents

Description

.. C. W. GRAHAM.

PROCESS OF APPLYING GASKETS 0R RING LINERS.

APPLICATION FILED JUNE 3.1918.

5 SHEETS-S HEET I.

Reissued Aug. 19, 1919.

l l l I I I I c. w. GR-AHAM. v PROCESS OF APPLYING GASKETS 0R RING LINERS.

A"PL|CATION FILED JUNE 3.1918.

Reissue d Aug. 19,

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GRAHAM, OF AILENDALE, NEW JERSEY, assroxon (JAN COMPANY, OF NEW YORK, 11'. -Y., ACOBPOBATIOK OF NEW JERSEY.

PROCESS OF APPLYING GASKETS OB RING Specification of Reissued Letters Patent. Reissued Aug. 19,1919.

.Orilnal Io. 1,164,245, dated September 21, 1915, Serial No. 788,800, filed December 16. 1812. Application for reissue filed June 8, 1918. Serial No. 238,049;

Drvrsron B.

To all whom. it may concern:

a citizen of the United-States, residing in Allendale, in the county of Bergen and State of New Jersey, have invented a new and useful Improvement in Processes of Applying Gaskets or Rin -Liners, of which the following is a speci cation.

This invention relates in general to an improved method or process of applying gaskets or ring liners of paper or other delicate material to the seaming flanges of can ends such as are used in themanufacture of what are commonly termed sanitary or double seamedcans.

An object of the invention is to provide for the cutting of the gasket or annular liner from aweb of paper or the like and for the a plication of the ring .thus produced to t e can end in such a manner that danger of deforming the ring or tearing it is minimized.

The invention in this particular contemplates a positive conveyance of the cut liner to the can end Without depending upon gsvity and without transferring the liner m one conveying member to another.

A further ob]ect of the invention is the provision of a simple method or process for accomplishing this result which will consist in a minimum number of steps and which can be carried on by ganged machines.

I am aware that prior to my invention attempts have been. made 'to ,provide annular gaskets in seaming flanges of can ends but considerable difliculty has been experienced by reason of the light, delicate and fragile nature of the gasket forming material.

Other objects and advantages of the invention will be a parent as it is better understood from t e following description of a preferred embodiment of the invention and also of a machine or mechanism adapted for this accomplishment.

On the drawings,

Figure 1 is a front elevation of a machine adapted for the producing of a process. embodying my invention;

Fig. 2 is a partial vertical section taken substantially on the line 22 of Fig. '1;

. engaging in the groove of Fig. 3 is a transverse vertical section taken substantially on the line 3-3 of Fig.1;

Figs. 4 ad 5 are horizontal, sectional views taken respectively on the lines 4-4 and 55 of Fig. 3;.

Fig. 6 comprises a plurality ofvertical,

sectional views of the compound punch and die mechanism;

Fig. 7 is a longitudinal, vertical, sectional view of the multiple. can end carrier detached and is taken substantiallyon the line 77 of Fi 5' Fig. 8 is a detail, sectional view, taken substantially-on the line 8-8 of Fig. 2; and

Fig. 9 is a diagrammaticview, lllustratlng two complete cycles of movements of combined punches and cutters, as controlledby their operating cams.

In the drawings, the machine as shown comprises a base plate 10, having upri ht standards 11 anda horizontal bed 12. xtending upwardly from the bed 12 on opposite sides thereof are a pair of uprights 13, the same bein provided at their upper ends with suitabfie journal boxes 14, in which'is mounted a power shaft 15, driven from any suitable.source (not shown) as by means of a 'pulley 16. Fixed on said shaft 15 are a pair of cams 17, more particularly hereinafter described, which are adapted to reciprocate 'a cross head 18, mounted in guides 19 secured on the uprights 13. Secured to the end of the shaft 15 is a bevel gear 20, which is adapted to operate a main driving shaft 21, extending longitudinally of the machine, throu h the intermediary of bevel gear 22, vertica shaft 23 andbevel'gears 24 and 25. Mounted on the bed 12 is a bolster plate 26fwhich supports a plurality of compound dies 27, with which cooperate a corresponding number of compound punches 28 mounted in the cross head 18, the number of said compound dies and compound punches shown in the drawing being that more or less may be employed, 1f desired. Reciprocally mounted on the bed 12 in ways 29 is a multiple can end carrier 30, operated from a cam 31 onthe shaft 21, through a forked rod 32, having a roller the cam 31, said four, but it will be understood adjusta 'ary, outer member 59,

rod 32 having a yieldable connection 33 with a second rod 34 pivotally connected to a lever arm 35, which in turn has plvoted thereto at its outer end a link 36, pivoted to the rear side of the carrier 30.

As more clearly shown in Fig. 2, the bolster late 26 is provided with a threaded, file stop 37 b which the carrler is brought to rest at t e end of forward stroke, to thereby properly positlon the can ends carried by it in allnement' with the punches and dies, as hereinafter described, any excess movement ofthe carrier whlch would be imparted to it by the cam 31 being taken up by the yieldable connection 33. The carrier 30 is provided with a pluralit of circular pockets 38 (Flg. 5), the

num r of said pockets corresponding to thenumber of ,the dies and punches, each pocketbeing of a diameter large enough to permit can ends 39 to pass therethrough, and each being provided with a stationary segmental ledge 40 and fa "retractable segmental ledge 41, formed on an arcuate-member 42 pivotall connected to and operated by a bell cran 43, all of the bell cranks 43 being in turn pivotally connected to an operating bar 44, longitudinally slidable on the carrier and held in normal position by spring 45,butadapted to be operated by a sprlng-controlled, pivotally mounted trip 46 on the bed 12 as the carrier is retracted.

From the foregoing description, it will be seen that can ends which are fed -to thepockets38 will be held in position therein until the operating bar 44 engages the trip 46, whereupon all the can ends will be released simultaneously and allowed to drop ontoan endless belt conveyer 47 (Fig. 3), mounted on suitably supported rollers 48 and adapted to be driven by vmeans of a sprocket gear 49' (Fig. 1), secured to the end of one of the rollers, said sprocket gear 49'being driven'by means of 1 a sprocket chain 50, running over a sprocket gear 51, secured to the shaft 21. The cam 31 is so designed that the carrier 30 'is given a dwell or period of rest at each end of its reciprocation, and while in its rearmost position, a plurality of can ends are adapted to be fed from stacks and dropped into the pockets 38 simultaneously, by means of a plurality of feeding mechanisms 52 mounted on a bridge 53, extending over the carrier 30, said feeding mechanisms 52 each including a spiral gear 54 operated'by means of corresponding spiral gears 55, mounted on a longitudinally extending shaft 56, driven by means of a spiral gear 57 on the end thereof, and which meshes with a spiral gear 58 secured to the vertical shaft 23.

'By referring to Fig. 6, it will be seen that each compound die comprises a stationhaving a guideway 60 therein on its upper face, for a web 61 of paper or other suitable fibrous gasket forming material. Slidably mounted in a circular recess 62,, formed in the member." 59, is an annular female die 63, normally held in its uppermost position by a spring 64, the upper face of the die 63 being normally flush with the bottom of the guide 60, so that the web 61 lies fiat thereon. Secured tothe female die 63, and movable therewith, ,is a discharge tube 65, down which the, circular disks 66, punched from the web of gasket material, are adapted to pass and be discharged from the machine.

Each punch 28, cooperating .with a die 27, comprises an outer, annular cutting member 67, and a perforating punch 68 slidably mounted within the annular cutting member 67 and normally projected in advance of the cutting face 69 of the member 67'by means ofv a spring 70. The annular gasket or ring liner is cut from the web of gasket material 61 as follows: As the compound punch descends, the perforating member 68 thereof, being in advance, will first punch out a circular disk 66 from the web .by passing into the annular female die 63, as shown in'view b of Fig. 6, and as the descent of the compound punch continues, the face 69 of the annular cutting member 67 will engage the uncutv portion of the web and press the female die 63 down with it against the action of the spring 64, thereby cutting anannulargasket 164 from the web, as shown in view 0, Fig. 6. As the compound punch is startedon its up-stroke, the 190 emale die 63 will move upward y therewith,

thus serving to positively retain the cut ring uppermost normal position. Upon the con- I tinued upward movement of. the compound punch, the ring liner will be carried thereby since .the same will be held by frictional contact to the outside of the perforating punch 68, as shown in view d, Fig. 6.

Although not essential to the successful operation of my mechanism, the annular cutting member 67 of each punch may be provided with a chamber 71, having a plurality of passageways'72 leading therefrom to the cutting face 69 and the chamber connected by means of short pipes 73 to a chamber 74 mountedon the cross head 18, said chamber 74 being common to all' of the punches and being connected to a com.- bined vacuum and blast pump (not'shown), so regulated that'a vacuum is created in the chambers of the stroke,

punches during thefup' and an increased pressure or blast caused at the end of the short down stroke and' is pulled or fed'intermittentl on atransversely extending shaft 76, there being a separate roll of material for each set of punches and dies. through a slot 77 in the bed 12 and bolster plate 26, over a roller 78, along the guide 6;),

y t e following arranged mechanism. he strap of the web asses between two rollers 79, '7 9 longitudina ly. (Fig. 3) arranged on the front of the machine and common to all the webs being fed, said rolls being mounted in suitable journal boxes, one of which is preferably adjustably and yieldably mounted, as shown in Fig. 2. The ends-of the shafts supporting the rollers 79 are provided with meshing gears 80, the lower one of which is provided with a ratchet face 81 (see 'Fig. 8) and rotated step by step by means of a spring ressed pawl 82 located in a gear 83, rotata ly mounted on the extended shaft of the lower roller 79, and oscillated by means ofa rack bar 84, which receives a reciprocating movement by means of a bell cranklever 85 from a cam 86 mounted on the operating shaft 21, the cam 86 being so timed that the webs of paper will be pulled through the dies vwhile the punches are in elevated position. As shown'in Fig. 6, each die is provided with a plate 87, provided with a suitable openin 88, through which is ada ted to pass t e compound punch, said p ate preventing the lifting up of the scrap of the web of gasket material during the upstroke ofjthe punch and servin as a stripper:

he operation of the machine during a complete cycle is as follows: Starting with the parts in the position as shown in Fig. 3, in which position the gasket is just being deposited 1n a can end 39, a continued rotation of the cams. 17 in thedirection indicated b the arrow :2; through the angle included betweenthe radial lines 1" and s will lift the cross head 18, carrying the unches 28 therewith; a distance corresponding to that between the points R and S on the diagrammatic outline of the cam shown in Fig. 9. Immediately after the punches are started on this. part of their short upstroke, the carrier 30 Wlll be retracted, during which.

movement the assembled can ends and gaskets will be released, as hereinbefore described, and the carrier finally brought to a position where the can end pockets 38 are in alinement with the feeding devices 52', i

and the carrier will then have a period of rest long enough-to permit of the deposition of the canends 1n the pocket. As the earns 17 continue to rotate throu h the'angle between the radial lines 8 and t Fig. 3), the cross head 18 will descend an amount "corresponding to the'distance indicated between the points Sand T on the diagrammatic outline, Fig. 9. During this downstroke, the

perforating and cutting operations will take The web passes place in the manner described in connection 4 with the detailed description of the com--.

pound unches and compound dies. Upon the contlnued rotation of the cams 17 through the angle between the radial] lines It and u, the cross head will be raised as indicated by the line between the points T- and U, in Fig. 9, and during this upward movement, after the unches'have been raised above the level of t e topof the carrier 30,'the latter will begin to move forward, carrying with it the can ends or .closures "which have been deposited in the pockets 38. During this upward -movement of the cross head and punches, the paper web 61 will be fed through the dies 27 to thereby position a new portion of the web in position for another gasket to be cut therefrom. Upon the cams 17 continuing their rotation an amount'correspondin to .the angle between the radial lines 11. an r, the'cross head with the punches will descend the len and thegaskets carried by the punches will be deposited inthe can 'ends'onthe carrier,"

which will have been brought to rest prior to the punches reaching their lowermost point in'the short down stroke. ment of the cross head and punches is degth of the short stroke This-move noted in [Fig 9 by the line between the points U and R. As will be understood, the foregoing cycle of operations will be repeated for each complete rotation of the cams 17.

It will be manifest from the foregoing that the gaskets-or ring liners are given a minimum opportunity to become torn or injured between the time that they are cut flanged can bodies, thus producing what is known in the .art as sanitary cans. Theperipheral edge of the can ends constitutes an outstanding seaming flange surrounding a shouldered portion.

The liner rings are placed on this seaming flange withthe shouldered portion extending through the central opening of the liner rin In assemblin can'ends, thus lined wit flanged can bod1es,the shouldered portions of the can ends pass into the openmgs of the can bodiesfand the liners carried on the flanges of' the can ends lie in contact and ontop of the flanges of the can bodies in proper position to be fully inclosed within the folds of the interlocking flanges as they are being formed into the well known double seam. v I

It is thought that the invention and many of its attendant advantages will be under stood from'the foregoing description, and it will be apparent that various changes may be made 1n the'form, construction and arcontrolof it indivldually, and reciprocating rangement of the parts without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the

form hereinbefore described being merely a preferred embodiment thereof. I do not 230,805, filed April 25, 1918, of w 1011 this present application is a division.

I claim: I '1. A process of lining can ends which consists in first simultaneously cutting a liner from a web of suitable material and securing said liner in safe ition and maintaining said liner without movmg it edgewise an deliveringsaid I. liner onto a can end before releasing'itr a I 2. A process-.of lining can ends, which consists in ching a ring liner from and through a flat piece of paper or the like ma- .terial, holding and maintaining said liner in a flat condition in planes parallel with the lane of said material wh1le removing said iner away from theplane of cuttin and in a direction at ri ht angles to said-p ane, introducing an unlinedIcan end into the path followed b said ring liner as it was so removed, an moving said liner back in said patlh and setting it against a face of said can an 3. A process of lining can ends, which consists in unching a ring liner in an axial di-' rection ymaking two separate and concentric cuts at one. operation in and through a piece of flat materialsuch as paper or. the like, withdraw'in the ring liner in an axial direction from sa1d materlal, placing an unlined can end in the ath of said ring liner, and then returnin the ring liner along the same axial line an path and applying it to said can end., .1

4. A process: of. lining can ends, which consists in punching a ring liner from a piece of flat material such as paper by maklng at one operation two separate spacedapart cuts through said material, then withdrawing thecut liner away from the lane of said material, then (placing a flange canend in the returning t ring liner, and then ering liner along the same path anal applying it on .to the flange of said can en w a 5. A process of forming and applying annular gaskets to the flangesof shouldered .can ends, comprising the followingv steps: moving flat, thin and flexible gasket mate path of sai rial between gasket forming-elements, movin *one of said forming elements to engage sa1d fiat material and form an annular gasket therefrom, maintaining said enga ement of said gasket after forming to hold it in positive control, moving said formed gasket away from said place of forming by means of'one of said forming elements,'moving a flanged and shouldered can end into axial" alinement with said gasket while held and controlled the latter forming element, and then movin said gasket axially and passing it around t e shoulder and on to theflange of said can end.

6. A method of forming, controlling and applying annular flat gaskets to' the flanges o shoulderedcan ends, consisting of the followin steps: moving a webof thin, flexible and at gasket material between axially alined forming elements, bringing said forming elements together to engage said web of asket material, and while so engaged formmg therefrom an annular asket, maintaining enga ement of said gas et by one of said elements means of frictional contact with an edge 0 said formed gasket, moving said forming element with said gasket away from said place of forming, moving a shouldered and flanged can end into assembling alinement with said gasket while engaged and held by said forming member, and then moving said gasket out of the engagementand control of said member and passing it around-the shoulder and on to the flange of the said positioned can end.

7. A method of forming, controlling and applyin annular flat kets to the flanges of shou dered can ens, consistin of the following steps: moving a web of t in flexible flat gasket material between axially alined forming elements, bringing said forming elements together into contact with said web, whereby a portion of said web is perforated and severed and an annular ring gasket formed therefrom, one of said forming elements entering within the central opening of said annularring asket and frictionally engaging the inner e ge thereof and thereby maintamin positive control of the gasket and positive y holding said gasket against distortion or displacement while moving the same away from said place of formin moving a shouldered and flanged can en into assembling relation with said annular gasket, and then causing the shoulder of sa d can end to enter the central opening of said gasket and the gasket to be released by sa1d control and to be seated on the flange of said can end.

CHARLES W. GRAHAM

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