USRE19536E

USRE19536E - parks

Info

Publication number: USRE19536E
Authority: US
Publication date: 1935-04-16

Description

April 1e, 1935. AM'. @PARKS Re. 19,536

l METHOD OF MAKING ANDIAPPLYING GASKETS T0 JAR CAPS original Filed Deo. 4, 19:50 ,s sheets-sneu 1 M. G. 'PARKS April 1 6, 1935.

METHOD oF MAKING AND APPLYING GAsxETs To- JAR CAPs original Filed Dc. 4. 1956 5 sheets-shea 2 April l16, 1935. v M. G. PARKS METHOD OF MAKING AND yAPPLYING GASKETS TO JAR CAPS Original Filed Dec. 4, 1950 3 Sheets-Shed?,

.un llll ln Remue Apr. 1s, 193sl UNITED STATES lasse METHOD OF MAKING AND APPLYING GASKETS T JAR CAPS Merritt G. Parks, Dayton, Ohio, assignor to Crown Cork Seal Company, Inc.

Original No.

Serial No.

1,899,524, dated February 28, 1933, 499,908, December 4, 1930. Application for reissue February 20, 1934, Serial No.

13 Claims.

The invention relates generally to the manufacture of jar caps having plastic gaskets attached thereto. and more particularly it relates to a method of forming and applying such gaskets to the caps.

The primary object ofthe invention is to provide a new and improved method of making plastic gaskets, of such a character as to insure uniforrnity of size and shape even lwhenproduced in large quantities and at high production speeds.

Another object is to provide a new and improved method whereby gaskets oi' raw rubber or other, plastic material may be formed and applied to jar caps quickly and uniformly at a cost substantially lower than has heretofore been possible.

Another object is to provide such a method wherein the gasket is formed from an elongated strip or strand of material and applied in circular form to the cap so as to unite the ends oi the `strand and compress the material to the desired shape in adhering relation to the cap.

For the purpose of illustrating the practice of the present invention, I have illustrated in the accompanying drawings and will herein describe in detail a preferred form of apparatus adapted to utilize the new method, but it is tobe understood that this apparatus is not to be taken as a limitation of the invention. .'20 In the drawingsr" Fig. 1 is a fragmentary side elevational view of an apparatus adapted to utilize the invention. Fig. 2 is an end elevational view showing the left hand end of the apparatus illustrated in :ifi 1.

Fig. 3 is a fragmentary vertical sectional view taken through the gasket forming and applying means substantially along the line 3-3 ofY Fig. 6.

Fig. 4 is a frag'mental view similar to Fig. 3 showing the parts in the positions occupied upon the compl1tion of the gasket applying operation.

A Fig. 5 is a tragmental plan view taken in section along the line 5 5 of Fig. 6. Y

Fig. 6 is an end elevational view taken through the machine along the line 6 6 of Fig. `3 with certain parts oi' the vmachine removed.

Fig. '7 is a vertical sectional view taken along thc line l-l of Fig. 1, looking in the direction of the arrows.

Fig. il is a vertical sectional view the machine along the line.88 ci' Fig. 1, looking in the direction of the arrows.

Fig. 9 is a vertical vsectional view taken along the line 9--9 of Fig. 1 looking in the direction of the arrows. v s

taken through along the line lI-II of Fig. 6 and showing the feeding clamp in its open and closed positions respectively.

'In accordance with the preferred practice of the method, an elongated strand is formed from 10 a heated mass of raw rubber or the like and is fed directly to a continuously operating machine which forms a succession of annular gaskets directly from the strand, and applies such gaskets to the jar caps. The formation-of the gaskets from the strand is accomplished by arranging the end of the strand in a circle of a size suitable for a gasket, holding the remainder o! the strand adjacent to the circularly formed portion and then severing this portion from the remainder of the strand. The circularly formed portion of the strand is then compressed against a jar cap and during such compression it is conilned so as to limit its expansion in a radial direction whereby to insure uniformity of the gaskets. In the compression of the circularly formed portion oi' the strand, its opposed ends are united to form a continuous annular gasket adhering to the The apparatus generally The apparatus shown herein comprises a strand forming machine 6 (Fig. 2), preferably in the form of an' extruding device of well known construction, through the die 'l of which a continuous 35 strand 8 of gasket material such as raw rubber may be discharged- As the strand 8 is formed, it is fed toward a gasket-forming and applying machine, which, generally considered, consists of a gasket-forming and applying device I 0, sup. 40 ported in axial alinement with a reciprocable plunger Il. An indexing holder l2 operates to i'eed jar caps I4 one by one into a position between the plunger il and thevforming and applying device l0 so that gaskets formed by the de- 45 vice maybe pressed onto the caps I 4 by coordi `nated approaching movements of the plunger 'and the device while theholder remains stationann Thegasket forming and applying mechanism 5 In the machine shown herein, 'a strand 8 of gasketmaterial, preferably ci' round cross section,

is taken directly from the ystrand forming machine l, and uy'axeedipg f n :la end taining the thickness and dimensions of the gasket substantially uniform at all points thereof.

means are in the present case, both rotatable in character and are arranged to act in succession to draw the end portion of the strand over the desired path to form the annulus. Considered generally, the feeding means preferably comprises a disk I1 (Figs. 1f6, 9, 11, and 12) fixed on a shaft I8 mounted in standards I3 and 28 of the frame 2l and carrying a releasable feed clamp 22 (Figs. 6, 11, and 12) for grasping and moving the end of the strand 8. VAs indicated by the arrow in Fig. 6, the feed clamp 22 on the diski1 moves the end of the strand8 along the adjacent periphery of an oppositely rotating coaxial mandrel 23, which yin the present case constitutes a part of the circle forming means. This feeding of the strand by the disk I1 continues until the strand is within the range of a clamp 24 (Fig. 6) carried by the winding mandrel. After automatic operation of the clamp 24 so as to grasp the strand 8, the feed clamp 22 is released so that continued rotation of the mandrel 23 may draw the strand into circular form about the mandrel. y

In order; that the end of the strand 8 may .be held close to the mandrel 23 and within the vrange of its clamp 24 as it is fed by the disk I1, the feed clamp 22 is carried on a slide 25 which is movable radially ofthe disk I1 as shown in Fig. 6 on rods 25, and is pressed radially outwardly of the disk I1 by springs 21 surrounding the rods 28. The clamp 22 is best shown in Figs. 11 and 12 and-is in the form of a lever extending radially with respect to the disk I1 and pivoted at 28 upon theA slide 25 so that its outer end is in opposed relation to a stationary finger 301carried by the slide and forming the other member of the clamp..

The clamp 22 is normally lpressed to its open position, shown in Fig. 11, by a spring-3| acting on one end thereof, and is closed by movement of the opposite end of the clamp along a cam surface 32 formed on a stationary plate 33 (Figs. 1, 2 and 10) which` in the present cas-e, is in the form of a disk mounted on the frame of 'the machine at one side of the feed disk- I1.

Rotational movement imparted to 4the disk I1 moves the feed clamp 22 toward the end of the v strand 8 (Fig. 6) and the cutaway portion 34 of the cam surface 32 (Fig. l0) along which the clamp moves, permits the clamp to be opened by the spring 3i. A detailed view of the cam plate 33 is shown in Fig. 10, which is taken from the far side of the plate as lshown in Fig. 2. This view shows the formationof4 the various cam surfaces. By the action of the springs"'21, the clamp 22 is held in its outward radial position until the two opposed members and 22 are positioned on opposite sides of the strand 8. To insure proper positioning of the strand, guide rollers 35i are positioned in opposed relation to the feed disk I1 and theclamp 22 is arranged to grasp the strand between the two guide rollers 35. The action'of the cam surface 32 along which the clamp 22 moves causes the clamp to be closed 4until it has passed to a second cutaway portion The mandrel 23 is mounted within a sleeve 31 'A for rotation therewith, the sleeve being rotatably mounted in a bearing head 38 of the frame 2|.

One end of the mandrel 23 (the left in Fig. 3)

normally projects from the end of the sleeve 31 to provide a surface about which the strand `8 may be wound, and the clamp 24 is arranged to operate by pressing the strand against the end 44of the sleeve 31. l The feeding means and the circle forming The clamp 24 is preferably mounted. principally within the mandrel 23, which is of sleevelike form to provide space for the clamp and its operating parts, and as shown herein the clamp comprises a movable member in the form of a lever 43 extending diametrically of the mandrel (Figs. 3, 4 and 6) One end ofl the lever 40 has a ypair of spaced` clamping fingers 4I formed thereon adapted to project through the mandrel 23 and upon pivotal movement of the lever 40, to press the strand 8 longitudinally of the mandrel into vcontact with the end'of the sleeve 31.

The clamping lever 40 is pivoted lat 4II"L inter- 44 which is longitudinally slldable in the mandrel and which insures `an unbroken surface in the clamp is operated, and in the present case the clamping fingers 4I project 'through a plate the mandrel at the point where the strand is wound. .The clamping lever 40 is normally held in its open position by a spring 45 (Fig. 3) extending through the wall 43 and connected to the lever 40 and to a cross head 41 which is fixed to the outer sleeve 31 in a manner which will later appear.

-To pivot the clamping lever 48 to its operative position at the desired point in the rotating movement' of the mandrel 23.` a rod 43 is employed which is slldable longitudinally through the wall 43 and into contact with the inner end ofthe lever 40. A spring 50 acting on the rod 48 normallypresses the'rod toward the lever 48 but its movement is restrained by a trigger 5I (Figs. 1 and 3) Aengaging an abutment 52 on the rod and arranged to be released at a predetermined point in the rotative movement of the mandrel.

4A shaft 53 connected to the crosshead 41 and serving to rotate the mandrel, also serves to support the trigger 5I through collar 54 fixed on the shaft. The trigger 5I, which is pivoted on the collar 54 extends longitudinally of the shaft 53 and is operatedby a plunger 55 which projects diametrically through the shaft 53.

the mediiun of a One end of the plunger 55 is connected to the trigger 5| so as to transmit movement 4thereto in two directions as'shown at 55 (Fig. 3), and the trigger is moved toward its operativeposition by a spring 51 surrounding the other end of rthe plunger and acting between the plunger and As the mandrel rotates, it draws the end of the.

strand 8 into the 1longitudinally opening annular channel formed between the mandrel 23, the end of the sleeve 31 and an annular sleeve Bila which forms apart of the bearing 38, and by the action' of the sides of this channel. the annular portion of the strand is maintained in the sired form.

Means is provided for automatically returning the rod 49 to the position `shown in Fig. 3 after the rotative movement of the mandrel has been completed. so as to permit the clamp 24 to be opened by its spring 48.

As shown in Figs. 1 and 3, this means comprises a plate 6I fixed on the rod 49 so as to be engaged by the end of a movable lever 32 to withdraw the rod to a position wherein the abutment 52 is behind the shoulder of the trigger DI. The lever 82 is mounted on a bracket 63 (Fig. 1) and is actuated through a link 34 connected to a similarly pivoted lever 65. The lever '35 carries a cam roller 66 engaging a grooved cam 31 fixed' on a shaft 68 which rotates in timed relation to Y the rotative movement of the mandrel 23.

The sleeve 31 is'utilized to move the gasket along the mandrel 23 and to press it into position on the cap I4, and .for this purpose the mountingl Vyielding lost motion connection, best shown in Fig. of the'drawings, wherein it will be seen that cross head 41 extends through longitudinal slots 1I formed in the mandrel 23. The mandrel 23 is normally projected longitudinally from the end of the sleeve 31 by springs 12 acting between the cross head 41 and the transverse wall 43 of the mandrel, the springs 12 being mounted about rods 13 which extend through the cross head 41 and the wall 43 and have heads thereon which limit the movement of the parts by the springs 12.

During the initial part of the advancing movement of the sleeve 31, the annulus formed from the strand 8 is severed from the remainder of the strand by a knife` 15 (Figs. 3, 4 and 10) positioned closely adjacent to the upper surface of the sleeve 31 (Figs. 3 and 4) and acting as a shearing edge past which the annulus is forced by the sleeve 31. .The portion of the strand 3 which is held by the feed clamp 22 extends along the face `of the knife at an angle to the cutting edge of the knife and since this portion cannot pass the knife 15, it will-be-apparent that the annular portion of the strand which is being moved by the sleeve 31, will be sheared from the held portion of the strand so as to leave angularly disposed ends on both portions of the strand. It will be noted that in the present case the knife is secured on the stationary plate 33 (Fig. 3) and the body of the knife, therefore, forms a part of the cam surfaces 32, 34, and 36 (Fig. 10).

Since the sleeve 31 must move longitudinally of the mandrel to press the strand onto the cap I4, .the clamping fingers 4I of the lever 40 are arranged to slide radially through the plate 44, into `an out-of-the-way position shown-in Fig. 4, and

in such movement the lever 40 is guided by a pin 45 projecting radially inwardly fram the plate 44 and loosely engaging an opening in th lever. The withdrawing movement of the lever 40 is obtained by pivotal movement of the lever 42 upon which the lever 4U is mounted, against the action of a spring 43 which normally tends to move the lever 42 so as to project the fingers 4I outwardly of the mandrel to theposition shown in Figs. 3 and 6.

After the pointed end edge of the mandrel 23 has moved into abutment with the cap I4, the continued movement of the cross head 41 serves to withdraw the fingers 4I of the clamp 24 radially into the mandrel. This is accomplished by a cam 18 formed on the cross head 41 and arranged to engage a cam roller 11 on the adjacent end of the'lever 42 to move the lever against the force of the spring 48 to lthe position shown in Fig. 4. Thus, the path of the sleeve 31 is cleared and its movement is continued until the annulus is pressed within the flange I4* of the cap I4. The mandrel 23 provides an internal support for a the gasket from the time it is formed until it is applied to the cap, thus insuring the gasket maintaining its preformed shape while being bodily moved by the sleeves 31 from the mandrel to within the cap. v

It will be noted that the advancing movement of the plunger II presses the cap I4 positively towardA the yielding mandrel 23 until the flange I4* of the-cap is positioned within and is laterally supported by the sides of an annular recess 18 formed in the outer end oi'l the collar 60 (Figs. 3 and 4), and while it is thus held the jannulus is compressed to rectangular cross sectional form between the cap I4, its flange I4, the mandrel 23 and the end of the sleeve 31. It will be seen that the annular recess 18 provides an annular space in which the flange I4 may be placed with its inner surface alined with the inner surface of the collar 60, and the compressing action of the sleeve`31 widens the strand 3 to fill the space -between the flange I4a and the mandrel 23. Such compression serves effectively to join the adjacent, angularly cut ends of the strands, and a continuous annular gasket is thereby formed having substantially the same thickness and width at all points thereof. The ends of the gasket may be tapered or inclined so that when the gasket is applied to the cap, the abutting ends will overlap along an inclined line that cuts or intersects the inner and outer circumferences of the gasket. In other words, the line of cleavage is at an angle to a radius of the arc of the gasket in order to form a joint of the same uniform dimensions as the intermediate or remaining portion of the gasket.

To remove the cap I4 from the recess 18 upon completion of the attaching operation, a pair of U-shaped rods 19 are mounted in the transverse wail 43 (Figs. 3, 4 and 6), with their cross members disposed on opposite sides of the axisof the mandrel 23 and adjacent the clamp 24. One side member 30 of each rod 19 extends longitudinally through the mandrel 23 and out of the other end thereof (Fig. 3), and both are guided in ears 8| on the collar 54. Extending from the collar is a bracket 82 between which and the rods 19 a pair of springs 33 are arranged to act to press the rods toward the cap I4 positioned at the other end of the mandrel. f Thus, when the plunger II is withdrawn, the rods 19 push the cap I4 away from the mandrel 23 and into the indexing holder I2 so that the nnished cap will be moved out of the machine'as a new cap is moved into position.

In the withdrawing movement of the sleeve 31, the mandrel resumes its normal position shown in Figs. 3 and 6, and the fingers 4I of the clamp 24 are projected through the mandrel so as to be ready for the next clamping operation.

vThe indexing cap holder shaft 35 mounted in the bracket 86 (Fig. 1) be-J neath the forming device I0 and extending ythrough the standard I9 of theframe. At equally spaced points about its periphery, the disk I2 has a plurality of segmental pockets 31 formed therein opening outwardly of the disk and of sufficient .width to permit a cap I4 to enter edgewise thereinto. The disk I2 is moved intermittently to position the pockets 31 successively between the mandrel 23 and the plunger II, the uppermost pocket on the disk being the one which is positioned adjacent the mandrel. As shown in Fig. 9, the disk I2 is moved in a counterclockwise direction, and the caps I4 are fed to the pockets 31 of the disk through an inclined chute 33 which discharges a vertically positioned cap I4 into each pocket just before it reaches the uppermost position. It

will be seen that the open lower end of the chute 3l is located opposite a position in whichv the The plunger 11 and its `mounting` The reciprocating plunger I I is mounted on one end of a shaft 33 (Figs. 1 and 2) which is slidable through a standard 3i of the frame and is actuated by a lever 32 pivoted at one end to the.

other end of the shaft 33. Intermediate its ends. the lever 32 is pivoted on an adjustable support `3 3 carried by the standard 3i, while at its other end it carries a roller 94 engaging a 'grooved cam Il mounted on the end of a constantly rotating shaft 33. By adjusting the support 93, the stroke of the plunger II mayv be adjusted to bring the cap I4 accurately to the desired position.

If desired. the plunger II, as well as the chute Il may be heated by suitable electric heaters 33 and IUI and the strand I5 may be drawn from the forming machine 6 through an electrically heated'guideway IIII (Figs. 2 and 9) so as to render4 the strand more easily workable and insure firm adherence of the gasket to the caps. In other words, each cap I4 as it is moved into the 'gasket applying position is sufilciently heated to insure the gasket when applied under pressure to be pressed to the desired conformation and adhere to the cap.

The Adriving mechanism All of the parts of the machine are preferably driven in timed relation to each other from a each revolution of the shaft 63it being understood that the cam 95 has but 'a single' lobe.

The constantly rotating shaft 63 also drives theindexing Work holder I2, through the medium of a Geneva movement, having a disk II2 xed to the shaft 68, with a pin` II3 (Fig. 9) adapted to engage radial slots II4 in a Geneva wheel II5 which is xed on the .shaft 85 of the Work holder. The number of slots II4 in the Geneva wheel I I5 corresponds to the number. of cap-receiving pockets 31 so that each rotation. of the shaft 68 moves a new pocket 81 intov position opposite the mandrel 23.

'Ihe -desired intermittent rotary movement of the feed disk I1 and the mandrel 23 is preferably obtained from the shaft 85 upon which the indexing holder I2 is mounted. To ,this end the shaft 35 is extended through the standard 20 'and carries a gear II1 (Figs. land 'D'Which through an idler II3 drives a gear IIS on'the shaft 53. The idler II8 is preferably made wide enough to permit longitudinal movement of the shaft53 in the gasket applying operation.

The gears II1, II3 and IIS are proportioned to impart one complete revolution tothe mandrel 23 during each advancing movement of the work holder I2,v and it will be seen that this rotation of the mandrel takes place while-the movement of work holder is taking place. .Y

The feed disk I1 is oppositely rotated in timed relation to and at the samespeed as the shaft 53 by meshing gears |20 and I2I fixed respectively on the two shafts, and the gear I2I is made of suillcient thickness to maintain the two gears in mesh during longitudinal movement of the shaft 53.

Operation i1 1s such that the end or the strand a is adjacent to the mandrel l23 as shown in Fig. 6, while .the ngers 4I of the clamp 24 project through the mandrel adjacent to the end of ,the strand. When opposite rotation of thev feed disk I1 and the mandrel is started, the clamp 22 moves across the adjacent periphery of the mandrel, and due to outward radial movement of the clamp 22 by the springs 21, the end of the strand is held close to the mandrel 23 for an appreciable distance. During such movement of the strand 3; its end is automatically secured to the mandrel 23 by the nger 4I of the clamp 24 which presses the strand` against the adjacent end of the sleeve 31.

Itiwill be recalledthat the clamp 24` is normally projected through the mandrel 23 by the spring 48, and is held in its unclamped position by the spring 43, and its automatic clamping movement is obtained through the action of a cani upon the plunger which releases the trigger 5I (Flg.,3) and permits thespring pressed rod 43 to strike and actuate the lever 40.

After the clamp 24 has been closed, the cut away section 3B of the cam 'surface 32 permits the clamp 22 to be opened s o as to release the strand from the feed disk I1 and permit it to be drawn by the clamp 24 into a circle in the space between the mandrel 23, the collar Ell* and the' y sleeve l1.

Just prior to the completion oi' a iull revolution i of the sleeve 31 which acts as a shearing member in cooperation with the knife 15 to cut` the strand at an angle close to the clamp 22 which is then stationary. 1

Asl the sleeve 31 advances, (to the lelt'in Fig. 6) the Aclamp 24 is opened by withdrawal of its actuating rod 49, to a position wherein itis held by the trigger 5|, this being accomplished by the lever B2 (Fig. l) operated from the lever 65 which reclprocates the sleeve 31. At substantially the same time, the projecting fingers 4I of the clamp 24 are drawn radially inwardly of the mandrel by the action of the cam 18 which moves with the sleeve 31 and acts to rock the lever 42 upon which the clamp 24 is mounted.

During such advancing movement of the-sleeve 31, the mandrel 23 moves longitudinally with the sleeve by reason of the springs 12 (Fig. 5) and approaches the cap I4 which is then being advanced toward the mandrel by movement of the plunger II. While the ycap I4 is being positioned by the cooperative action of the plunger Il and the mandrel 23 and the recess 13, the advancing movement oi' the sleeve 31 continues. and after the positioning lof the cap is completed the annular strand is compressed onto the cap into rectangular cross sectional form with .united ends, as shown in Fig. 4.

The withdrawing movementof the plunger I I and the sleeve 31 then takes place, and the 1inished cap is moved back intothe pocket 81 ofthe indexing holder I2 by the action of the spring pressed rods 19, the springs 83 of which have been compressed during the gasket applying operation.

As the sleeve 31 is withdrawn, the springs 12 move the mandrel 23 to the left relatively to the sleeve, so that the end of the mandrel projects from the sleeve as shown in Figs. 3 and 5. This relative movement withdraws the cam 16 and permits the spring 48 to project the clamping lingers 4I outwardly through the mandrel.

'I'he mechanism is then conditioned for another rotative movement to form another annulus from the strand B, and such movement occurs automatically due to the driving connection between indexing holder I2 and the strand feeding and circle forming devices. y

During such rotative movement of the mandrel to form another annulus, the work holder I2 moves the finished cap I4 out oi.' the machine and advances another cap from the chute 88 to a po- I claim:-

1. The method of forming and applying plastic gaskets to jar caps which consists in forming a strand of raw rubber composition material,

"forming the end of the strand into a circle,.sever ing the circularly formed portion of the strand from the remainder thereof, holding the end of the remainder of the strand during `and after the severing operation, and compressing saldportionagainst a jar cap to unite the ends of said portion and ailix it to the cap while conning said portion to limit the radial width to which it may be expanded by such compression.

2. The method of forming annular gaskets or the like which consists in extruding a continuous strand from a heated mass oi' raw rubber compositionV material, and forming said strand into a succession of circles severed `from each other and each having opposed ends, and uniting the ends of each circle while maintaining the material in a heated. condition.

3. The method `of forming and applying plastic gaskets to jar caps which consists in compressing a circularly arranged strand of gasket material of round cross-section and with opposed ends onto a cap to form a gasket of rectangular cross-section with the adjacent ends of the strand joined.

4. The method of forming and applying plastic gaskets to jar caps which consists in drawing the end of a strand or rawv rubber composition material through an annular channel recess to form a circle from said strand confined by said recess,

severing the circularly formed portion of the strand from the remainder ofthe strand, placing a jar cap in closing relation to'said recess, and moving said circularly arranged strand through the recess to compress the strand onto the cap to form a continuous annular gasket.

5. The method of forming and applying gaskets to caps or the like which consists in providing a strand of gasket material, shaping the end portion of the strand into aA preformed gasket by movement of the strand lengthwise along a line corresponding to the coniiguration of the gasket to be formed, internally supporting the preformed gasket, and pressing the gasket into a heated cap,

whereby to vcause the gasket to adhere to the cap.

6. The method of forming and applying gaskets to jar caps or the like which consists in providing a strand of compressible gasket material, shaping the end portion of the strand into substantially circular' form by moving the same lengthwise around a predetermined center, internally supporting the circularly formed portion and while it is internally supported directly pressing the same into a cap under pressure sufcient to cause the same to retain the circular shape and heating the cap to cause the gasket to adhere thereto. l

.7. The method of forming and applying gaskets to jar caps or the like which consists in providing a strand of compressible gasket material, shaping the end portion of the strand into substantially circular form by moving the Asame lengthwise around a predetermined center, supporting the circular formed portion and while it is supported directly pressing the same into a cap,under pressure suilcient to cause the same to be brought to the desired shape and to adhere to the cap while maintaining the cap heated, whereby to cause the gasket to adhere to the cap.

8. The method of forming and applying gaskets to jar caps or the like which consists in providing-a strand of compressible gasket material,

shaping the endl portion of the strand into substantially circular form by drawing the strand and moving the same lengthwise around a predetermined center, internally supporting the circularly formed portion and while it is internally supported directly pressing the same into a cap under pressure suillcient to cause the same to be distorted to the desiredv Snape and to adhere to the cap. while maintaining the cap heated whereby to cause the gasket to adhere to the cap.

9. 'I'he method of forming and applying gaskets to caps or the like which consistsv in providing a strand of gasket material, shaping the end portion of the strand into a preformed gasket by movement of the strand lengthwise along a line corresponding to the coniiguratlon of' the gasket to be formed, internally supporting the preformed gasket fromthe time it is formed substantially until it is applied to a cap, positioning the cap with its inner surface toreceive the preformed gasket wholly within the marginal edge thereof, and moving the preformed gasket against the inner surface of the cap.

10. The method of forming and applying gaskets to jar caps or the like which consists in providing a'. strand of compressihle gasket material, shaping the end portion of thestrand into a substantially circular 'form by movement of the strand lengthwise Aaround a predetermined cen-v ter, internally supporting the circularly formed portion from the time it is formed substantially until it is applied to a cap, positioning the cap with its inner surface to'receive the' preformed gasket wholly within the marginal edge thereof,

and moving the preformed gasket against the inner surface of the cap with sufllcient pressure to cause the gasket to adhere to said surface.

11. The method of forming and applying gaskets to Jar caps or the like which consists in prolasse viding astrand of compressible gasket material,

shaping the end portion of the strand into a substantially circular form by movement of the strand lengthwise arounda. predetermined center, internally supporting the circularly formed portion from the time it is.formed substantially until it is applied to a cap, severing the circularly formed portion from the remainder of the strand, positioning the cap with its inner surface to receive the preformed gasket wholly within the marginal edge thereof, and moving the preformed gasket against the inner surface of `the cap with suicient pressure to cause the gasket to adhere to said surface. Y

12. The methodof forming and applying gaskets to caps or the like which consists in providing a strand of gasket material, shaping'the end portion of the strand into 'a preformed gasket by movement of the strand lengthwise along a line corresponding to the conguration of the gasket to be formed, and moving the preformed gasket into a cap against the inner surface of the top thereofA and wholly within the marginal edge of the cap under sulcient pressure to cause the gasket to adhere to the cap.

13. The method of forming and applying gas- .kets to caps or the like which consists in provid-` ing a strand of gasket material, shaping the end portion of the strand into a preformed gasket by movement of the strand lengthwise along a lline corresponding to the conguration of the gasket to be formed. and moving the gasket into a cap against the inner surface of the top thereof and wholly within the marginal edge of the cap while maintaining the shape of the preformed gasket and under suillcient pressure to cause the gasket to adhere to said surface.

BEERRI'IT G. PARKS.