US1173571A - Rivet and cap setting machine. - Google Patents

Description

A. R. HAVENER.

RIVET AND CAP SETTING MACHINE.

APPLICATION FILED JAN-6,1915.

1,173,571. Patented Feb. 29, 1916.

3 SHEETS-SHEET l- THE COLUMBiA PLANOGRAPN co., WASHINGTON, D. c,

A. R. HAVENER.

RIVET AND CAP SETTING MACHINE.

APPLICATION FILED JAN.6,1915- I 1,173,571. Patented Feb. 29,1916.-

3 SHEETS-SHEET 2.

d/Umes s es 177116712 307".

THE COLUMBIA PLANUCRAPH CD., WASHINGTON. D. cv

A. R. HAVENER.

RIVET AND CAP SETTING MACHINE.

APPLICATION FILED mm. 1915.

1 1 73,571 V Patented Feb. 29, 1916.

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37 @721; 6 Rio 7? ARTHUR R. HAVENER, F WALTHAM, MASSACHUSETTS, ASSIGNOR T0 JUDSON L. THOMSON MFG (30., A CORPORATION OF BIASSAGHUSETTS.

RIVET AND CAP SETTING MACHINE.

Application filed January 6, 1915.

This inventlon relates to machines for inserting rivets in sheet material and clenching them within a rivet cap.

The object of the invention is to provide a machine of the character set forth which shall automatically feed rivets and rivet caps one by one into proper arrangement and alinement with each other and then insert said rivets in a piece of sheet ma terial, driving the same through said sheet material and clenching it in a rivet cap, the caps being so arranged that when the riveting operation is completed the material will be free from pressure and thus be in condition to be fed by the operator to receive a new rivet and cap.

The invention relates particularly to that portion of the. mechanism for handling and positioning the rivet caps in correct position relatively to the rivet, the anvil and the rivet setting instrumentalities.

The invention consists in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the claims.

Referring to the drawings: Figure 1 is a left hand side elevation of the machine. Fig. 2 is a front elevation of the same. Fig. 3 is a plan view of the work-support and mechanism for feeding the rivet caps to and along said work-support, Fig. 4 is a sectional elevation taken on line 44 of Fig. 3, with a portion of the rivet setting instrumentalities shown in connection therewith. Fig. 5 is a sectional elevation taken on line 55 of 4. Figs. 6, 7 and 8 are detail sectional elevations taken on line 6-6 of Fig. 4 and illustrating the relative positions assumed by the rivet setting parts at different steps in the setting of the rivet in the rivet cap. Fig. 9 is a detail plan section taken on line 9-9 of Fig. 1.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings. 10 is the frame of the machine in which is journaled a main driving shaft 11 whichhas a pulley 12 and a Specification of Letters Patent.

Patented Feb. 2a, was.

Serial No. 863.

pinion 13 fast thereto. The pinion 13 meshes into a gear 14 which forms one member of a clutch 15 constructed to rotate a shaft 16 in a manner well known to those skilled in this art.

The rivets are contained in a hopper 17 and are fed from said hopper down a raceway 18 to a transverse feed slide 19, whereby the rivets are fed one by one to an auxiliary raceway 20 in a manner well known to those skilled in this art and the rivets pass down the auxiliary raceway 20 into a rivet carrier 21. The rivet carrier 21 is supported upon a slide 22 to which a vertical reciprocatory motion is imparted by a lever 23 pivoted at 24 to the frame of the machine and having a vertically extending arm 23 upon which is journaled a cam roll 24 which bears against the periphery of a cam 25 fast to the shaft 16. A spring 27 holds the cam roll 24' against the periphery of said cam 25, so that the slide 22 and rivet carrier 21 are moved downwardly by the cam 25 and upwardly by the spring 27.

A rivet driver 28 is fastened to a slide 29 to which a reciprocatory motion is imparted by a crank pin 30 fast to the cam plate 25, said crank pin being connected by a link 31 to a pair of toggle links 32 and 33. The toggle link 32 is pivoted at 34 to a portion of the frame 10; the toggle link 33 is pivoted at 35 to the upper end of the slide 29. By this means a reciprocatory motion is given to the slide 29 and to the driver fast thereto in order to drive the rivet through the goods and clench it in a rivet cap.

Rivet caps are contained in mass in a hopper 36 which contains a rotary member, not shown in the drawings but rotated by a universal joint 37 to which rotary motion is imshaft 38, gear 39, pinion 40 and pulley 41. The pulley 41 is rotated by means of a belt 42 driven from the hub 44 of the gear 14. The rivet caps pass from the hopper 36 down a raceway 45 (see Figs. 1 and 2) which terminates at its lower end in a vertically inclined portion 46 having a curved lower terminal portion 47 which opens into the rear end of a slot 48 located between the opposing edges of two parts 49 and 50 forming together a work-support 51. The parts 49 and 50 are provided in their opposing edges with grooves 52 and 53 which are formed to receive the opposite sides of a rivet cap, (see Figs. 3, 4 and 5).

parted by a The parts 49 and 50 with the grooves 52 and 53 and the slot 48 therebetween form, as a whole, a work-support for holding the material to be riveted and a raceway for guiding the rivet caps into alinement with the rivet. Said parts 49 and 50 are pivoted upon studs 54 and 55, respectively, and are slidable upon said studs, being held normally in the position illustrated. in Fig. 5 in contact with a portion of the bracket arm 56 forming a portion of the frame 10 by springs 57 which encircle the studs 54 and 55. 'Stop-pins 58 and 59 project through slots provided in the parts 49 and 50, respectively, and limit the distance to which the work-support can be moved upwardly by springs 60 and 61. The slot 48 terminates at the free end of the work-support 51 in a chamber 62 adapted to receive the rivet cap when it has been pushed forward by mechanism hereinafter described. The upper and lower opposing edges of the parts 49 and 50 are beveled as at 63 and 64, respectively, above and below said chamber 62. An anvil, 65 has screw-threaded engagement with the bracket arm 56 of the frame and isprovided in its upper face with a recess 66 adapted to receive a rivet cap. The rivet caps are moved along the slot 48 by a slide 67 which isfastened to and forms, in effect, one piece with a slide rod 68 arranged to slide in the arm 56 and having an extensionpiece 69 pivoted thereto by a pin 90. One end of a spring 7 0 is connected to said extension piece 69, the opposite end of said spring being connected to a pin 91 fast to a bell-crank lever 71 and projecting into a slot 92 provided in the extension piece 69. The bell crank lever 71 is pivoted at 72 to the frame of the machine andis connected by a link 73 to a crank 74 which is fastened to the eccentric pin 30. A stop pin 75 (Fig- 4) is arranged at certain times to bear against the next to the lowermost rivet cap 76 in the portion 46 of the raceway 45 and said pin is fastened to a lever 77 which is pivoted at 78 to the arm 56 on the frame of themachine. Springs 79 hold the lower curved end 80 of the arm 77 against the upper edge of the slide plate 67 when the parts are in the position illustrated in Fig. 4.and at this time the pin 75 is out of engagement with the rivet cap 76. l/Vhen the slide plate 67 is moved toward the left (Fig. 4) and out of engagement with the lower end of the arm 77 then the stop pin 75 is drawn by the springs 79 into engagement with the rivet cap 76 and holds said rivet cap, together with the column of rivet caps in the raceway. 45 stationary, while the lowermost rivet cap 81 drops out of the portion 46 of the raceway 45 and into the slot 48 between the two parts 49 and 50 of the work-support 51.

WVhen it is desired to hold the column of rivet caps in the raceway 45 independently of the stop 75 on the slide 67, a manually operated lever 82 is utilized. This lever is pivoted at 83 to the bracket arm 56 and has a projection 84 at its lower end adapted to project through an orifice 85 in the back of theraceway 46 and beneath the rivet cap 76. \Vhen the lever 82 is employed, as hereinbefore set forth, a spring 86 is connected to said lever 82 through a hole 87, thus holding the lever 82 in position temporarily. The hand operated lever 82 is utilized when it is desired to move the slide plate 67 out of its normal position relatively to the work-support 51, as, for example, when a rivet cap becomes blocked in the work-support.

The general operation of the mechanism hereinbefore specifically described is as follows: Assuming the parts to be in the relative positions illustrated in Figs. 1 and 4, the sheet material, into which therivets are to be inserted and clenched, is placed upon the work-support 51. The machine is then started by means of a treadle and rod (not shown in the drawings) which causes the clutch 15 to rotate the shaft 16 and thus the rivets 89 are fed down the raceways 18 and 20 to be delivered one by one into the rivet carrier 21.

- In Fig. 4 a rivet 89 is shown in position in the rivet carrier ready to be driven by the driver 28. The rivet caps are fed from their hopper down the raceways 45 and 46 and the slide plate 67 and slide rod 68 are moved toward the left (Fig. 4) by means of the bell crank lever 71, link 73 and crank 74 until the right hand end of the slide plate 67 (Fig. 4) has retreated sufficiently to allow the lowermost rivet cap 81 to descend into the slot 48 in the work-support 51. When said slide plate 67 has moved rearwardly as hereinbefore described, the stop arm 77, the lower end 80 of which rests against said slide plate 67 when the parts are in the position illustrated in Fig. 4, willbe drawn by the spring 79 toward the left (Fig.4) until the stop pin 75 engages the next to the lowermost rivet cap 76. This will occur just be fore the lowermost rivet 81 is released by the slide 67 passing rearwardly therebeyond, so that the column of rivets will then be held in their raceway by the stop pin 75.

Upon a continuation of the operation of the machine the slide plate 67 will advance toward the right (Fig. 4) and will move the rivet cap '81 whichhas descended into the raceway formed by the parts 49 and 50 of the work-support 51 and will push said rivet cap forward into the chamber 62 provided therefor in the free end of said Work-support.

The machine is so timed that the-rivet carrier 21 and driver 28 will then descend to the position illustrated in Fig. 6 and the rivet 89 will be forced downwardly in the carrier 21 until it engages the uppersurface of the sheet material 88. At this time the rivet cap 81 is located in the recess 66 in the upper surface of the anvil 65 ready to receive the end of the rivet and clench it therein. lVhen the parts are in the position illustrated in Fig. 6 the rivet carrier comes to a stop while the downward movement of the driver 28 continues spreading open the two sides of the rivet carrier and driving the rivet 89 out of the rivet carrier and through the material 88, with its lower end projecting downwardly into the rivet cap which is so formed as to spread the end of the rivet outwardly and clench it therein in a manner well known to those skilled in the art.

When the parts move from the position illustrated in Fig. 6 to that illustrated in Fig. 7 the pressure of the rivet upon the material while being driven therethrough presses downwardly upon the work support 51 which, in turn, moves upon its pivotal studs 54 and 55, the springs 60 and 61 yielding to allow said work-support so to operate, and as the outer end of said rivet when the pressure is released upon the worksupport said work-support will be moved upwardly by the springs 60 and 61 until it stops in engagement with the stop pins 58 and 59 in the position illustrated in Figs. 1 and 4 and as soon as said work-support has moved upwardly to a sufficient extent the two parts 49 and 50 will be moved toward each other by the springs 57, the upper beveled edges 63 of the two parts 49 and 50 engaging the rivet cap and moving it slightly upward out of the chamber 62 to the position illustrated in Fig. 8. The material, the rivet and the rivet cap are now free to be moved into another position so that another rivet may be set in another rivet cap and the operation hereinbefore described is repeated.

It will be seen that in case any rivets or caps become entangled or blocked in the slot 48 either one of the parts 49 or 50 can be moved either sidewise or up or down, to-

gether or independently of each other as may be desired, so as to remove the cap which has become blocked in the slot 48 and the parts upon being released will return to their relative positions as illustrated in that in case there i any obstruction to the free movement forward of the slide plate 67, due to an obstruction in the slot 48 or for any other reason, the spring will yield, thus causing the slide plate 67, slide rod 68 and extension piece 69 to stop in their forward movement, and when the bell crank lever moves backwardly or toward the left (Fig. 1) said parts will be moved toward the left, the machine stopped and the obstruction can then be removed. This construction, whereby a yielding means is interposed between the bell crank lever 71 and the extension piece 69 and slide pieces 67 68, prevents amming the rivet caps, the slide thus being moved forward by yielding means and backwardly by positive means, namely, by the pin 91 which projects into the slot 92 and abuts against the left hand end of said slot under normal conditions and always when the slide 67 is being moved toward the left or away from the anvil 65.

The parts 49 and 50 have lateral projections 93 and 94 thereon located at the end of the slot 48 adjacent to the chamber 62, these projections being for the purpose of eifectually locking the rivet cap in the chamber 62 after it has once entered said chamber, and especially during the withdrawal or backward movement of the slide 67. It will be noted that these projections 93 and 94 are of less height than the depth of the grooves 52 and 53 in the parts 49 and 50, so that as the rivet cap is moved along in the slot 48 by the slide 67, when said slide encounters the projections 93 and 94 the parts 49 and 50 will be forced apart the springs 57 yielding to allow them so to do, but the rivet cap cannot fall out of the slot and out of the work-support by reason of its being still supported upon the projecting flanges below the grooves 52 and 53.

While it is preferable to have two projections 93 and 94 on the two parts 49 and 50, the device would be operable with one projection, as 93 on the part 49 or with one pro ection 94 on the part 50, and either construction, that of the single projection or of the two projections may be utilized without departing from the spirit of my invention.

Having thus described my invention, what I claim and desire by Letters Patent to secure is:

1. A machine for driving a. rivet in a piece of sheet material and clenching the same within a rivet cap having, in combination an anvil, a work-support constituting rivet cap onto said worlnsupport and mechanism constructed and arranged to feed said rivet cap along said work-support and into alinement with said anvil while said rivet cap is still supported by said work-support.

2. A machine for driving a rivet through a piece of sheet material and clenching the same Within a rivet cap having, in combina tion, an anvil, a yielding work-support constituting a raceway constructed and arranged to support and guide said rivet cap into alinement with said anvil and arranged to contact with said sheet material, a driver oppositely disposed to said work-support, mechanism constructed and arranged to move said driver toward and away from said anvil, means constructed and arranged to feed said'rivet cap onto said work-support and mechanism constructed and arranged to feed said rivet cap along said work-support and into alinement with said anvil while said rivet cap is still supported by said wmrk-support.

3. A riveting machine having, in combination, an anvil, a work-support constituting a raceway constructed to support and guide said rivet cap into alinement with said anvil, said WOI'li-SUPPOIt being constructed in two independently movable parts, means constructed and arranged to move said parts simultaneously in a vertical direction, a driver oppositely disposed to said worksupport, mechanism constructed and arranged to move said driver toward and away from said anvil, means constructed and aranged V to feed said rivet cap onto said work-support and mechanism constructed and arranged to feed said rivet cap along said work-support and into alinement with said anvil while said rivet cap is still supported by said work-support.

at. it riveting machine having, in combination, an anvil, a work-support constructed in two independently movable parts arranged to be moved simultaneously in a verticaldirection and also to be moved transversely relatively to each other, a driver oppositely disposed to said work-support, mechanism constructed and arranged to move said driver toward and away from said anvil, means constructed and arranged to feed said rivet cap onto said work-support and mechanism constructed and arranged to feed said rivet cap along said work-support and into alinement with said anvil.

5. A riveting machine having, in combination, a rivet carrier, a driver, an anvil, a yielding work-support constituting a raceway constructed to support and guide said rivet cap into alinement with said anvil, said work-support being adjacent to said anvil, said anvil and work-support being oppositely disposed to said rivet carrier and driver and means to move said driver toward said anvil and work-support, mechanism to move said carrier longitudinally of said driver and toward said anvil and worksupport, means constructed and arranged to feed said rivet cap to said work-support and mechanism constructed and arranged to move said rivet cap along said work-support and into alinement with said anvil while said rivet cap is still supported by said work-support.

6. A; machine for setting a rivet in a piece of sheet material and riveting the same within a rivet cap having, in combination, a rivet carrier, a driver, an anvil, mechanism constructed and arranged to move said rivet carrier and driver in the same direction and toward said anvil, a yielding worksupport, said work-support being constructed in two parts, each of said parts having a groove extending longitudinally thereof, said grooved parts cooperating to form a raceway for said rivet cap and arranged to support and guide said rivet cap into a'linement with said anvil, means constructed and arranged to feed said rivet cap to said work support and mechanism constructed and arranged to move said rivet cap along said work-support into alinement with said anvil while said rivet cap is still supported by said work-support.

'7. A machine for inserting a rivet in a piece of sheet material and clenching the same within a rivet cap having, in combination, an anvil, a yielding work-support constituting a raceway for rivet caps, a slide adapted to engage a rivet cap and feed the same along said work-support to a position above said anvil, while said rivet cap is still supported by said work-support, a rivet carrier, and a driver oppositely disposed to said anvil and constructed and arranged to engage a rivet within said rivet carrier, insert said rivet 1n sald sheet material and clench sald rlvet within said rivet cap.

8. A riveting machine having, in combination, an anvil, a work-support constructed and arranged to hold a rivet cap and position the same upon said anvil, a raceway, a slide constructed and arranged to support a column of rivet caps within said raceway, said slide constructed and arranged to engage thevlowermost of said rivet caps in said column and to feed said rivet cap through sald work support to a posltion above sa1d' anvil, a rivet carrier, and a driver oppositely disposed to said anvil and constructed and arranged to engage a rivet within said rivet carrier, insert said rivet in said sheet material and clench said rivet within said rivet cap. i

9. A rivet setting machine having, in combination, an anvil, a work-support constructed in two parts, said parts being constructed and arranged to yield both in unison 'and independently of each other, a

, groove extending longitudinally of each of said parts, said grooved parts cooperating to form a raceway, a feed slide constructed and arranged to support a column of rivet caps, yielding means constructed and arranged to feed said caps one at a time through said work-support to a position above said anvil, a rivet carrier, and a driver adapted to engage a rivet within said rivet carrier and drive said rivet through a plurality of layers of sheet material and clench said rivet within said rivet cap.

10. A rivet setting machine having, in combination, an anvil, a work-support con structed in two parts, said parts being constructed and arranged to yield both in unison and independently of each other, a groove extending longitudinally of each of said parts, said grooved parts cooperating to form a raceway, a slide constructed and arranged to support a column of rivet caps, a spring-actuated stop arranged to engage the second rivet cap from the bottom of said column of caps and support said column of caps while the lowermost cap is being released by said slide, mechanism to actuate said slide and feed said cap through said work-support to a position above said anvil, a rivet carrier, and a driver adapted to engage a rivet within said rivet carrier and drive said rivet through a plurality of layers of sheet material and clench said rivet within said rivet cap.

11. A machine for setting a rivet through a piece of sheet material and clenching the same within a rivet cap having, in combination, rivet driving instrumentalities, mechanism constructed and arranged to feed a rivet cap to said driving instrumentalities consisting of a feed slide arranged to support a column of rivet caps, a springactuated stop constructed and arranged to engage said feed slide and to be released by said slide during the retreating movement of said slide, whereby said stop will be moved to engage a cap on said column above the lowermost cap therein and support said column of caps while the lowermost cap is being released by said feed slide and mechanism to actuate said slide including a spring interposed between said mechanism and said slide.

12. A machine for setting a rivet through a piece of sheet material and clenching the same within a rivet cap having, in combination, rivet driving instrumentalities, mechanism constructed and arranged to feed a rivet cap to said driving instrumentalities consisting of a feed slide arranged to support a column of rivet caps, a spring-actuated stop constructed and arranged to engage said feed slide and to be released by said feed slide, mechanism constructed and arranged to reciprocate said slide consisting of a crank, a bell crank lever, and a link connecting said "crank and said bell crank lever and a spring, one end of said spring being fastened to said bell crank lever and the other end to said feed slide, whereby the forward movement of said slide will stop when abnormal resistance is encountered by said slide.

13. A machine for driving a rivet through a piece of sheet material and clenching the same within a rivet cap having, in combination, rivet driving instrumentalities, an anvil, mechanism constructed and arranged to feed a rivet cap to said driving instrumentalities consisting of a raceway adapted to retain the rivet caps in a column, a stop constructed and arranged to alternately support and release said column of caps, a manually operated stop adapted to engage and support said column of caps, a pivotally mounted yielding work-support constructed in two independent parts. having a raceway extending therethrough and terminating in line with said anvil and a yieldingly operated feed slide constructed and arranged to cooperate with said firstnained stop to release said caps one at a time and to feed said caps one at a time through said work-support to a position above said anvil.

14. Amachine for driving a rivet through a piece of sheet material and clenching the same within a rivet cap having, in combination, rivet driving instrumentalities, an anvil, mechanism constructed and arranged to feed a rivet cap to said driving instrumentalities consisting of a raceway adapted to retain the rivet caps in a column, a stop constructed and arranged to alternately support and release said column of caps, a

manually operated stop adapted to engage and support said column of caps, a worksupport constructed in two parts, said parts being adapted to yield in unison and independently of each other, a groove extending longitudinally of each of said parts of said work-support, said grooved parts cooperating to form a raceway, and a yieldingly operated feed slide constructed and arranged to cooperate with said first-named stop to release said caps one at a time and feed said caps through said work-support to a position above said anvil.

15. A machine for inserting a rivet in a piece of sheet material and clenching the same within a rivet cap having, in combination, an anvil, rivet inserting instrumentalities, and a pivotally mounted work-support comprising two independent parts movable transversely relatively to each other interposed between said rivet inserting instrumentalities and said anvil, said work-support having a slot therein arranged to guide a rivet cap into alinement with said anvil.

16. A machine for inserting a rivet in a piece of sheet material. and clenching the same'within a rivet cap having, in combination, an anvil, rivet inserting instrumentalities, a pivotally mountedwork-support comprising two independentparts movable transversely relatively to each other interposed between said rivet inserting instrumentalities and said anvil, said work-support having a slot therein arranged to guide a rivet cap and mechanism constructed and arranged to move a rivet cap along said slot into alinement with said anvil.

17. A machine for inserting a rivet in a piece of sheet material and clenching the same within a rivet cap having, in combination, an anvil, rivet inserting instrumentalities, a pivotally mounted work-support comprising two independent parts movable transversely relatively to each other interposed between said rivet inserting instrumentalities and said anvil, said work-support having a slot therein arranged to guide a rivet cap, means arranged to feed a rivet cap into said slot, and mechanism'constructed and arranged to move said rivet cap along said slot into alinement with said anvil.

18. A machine for inserting a rivet in a piece of sheet material and clenching the same within a rivet cap having, in combination, an anvil, rivet inserting instrumentalities, a movable work-support interposed between said rivet inserting instrumentalities and said anvil, said work-support having a slot therein arranged to guide a rivet cap while supported on said work-support to a position in alinement with said anvil, a raceway constructed to hold a column of rivet caps, means constructed and arranged to deliver said rivet caps one by one to the slot in said work-support, and a slide ar ranged to operate said means and also to move said rivet caps along said slot and into alinement with said anvil.

' 19. A machine for inserting a rivet in a piece of sheet material and clenching the same within a rivet cap having, in combination, an anvil, rivet inserting instrumentalities, and a pivotally mounted work-support interposed between said rivet inserting instrumentalities and said anvil said worksupport having a slot therein arranged to guide a rivet cap into alinement with saidanvil while said rivet cap is still supported by said work-support.

20. A machine for inserting a rivet in a piece of sheet material and clenching the same within a rivet cap having, in combination, an anvil, rivet inserting instrumentalities, a movable work-support interposed between said rivet inserting instrumentalities and anvil, said work-support comprising two independent yieldingly mounted parts having a slot therebetween and constituting a raceway for a rivet cap and mechanism constructed and arranged to move said rivet cap along said slot and into alinement with said anvil.

21. A machine for inserting a rivet in a piece of sheet material and clenching the same within a rivet cap having, in combination, an anvil, rivet inserting instrumentalities, a movable work-support interposed between said rivet inserting instrumentalities and anvil, said work-support comprising two independent pivotally' mounted parts, said parts being slidable'toward and away from each other, having a slot th-erebetween and constituting a raceway for a rivet cap and mechanism constructed and arranged to move a rivet cap along said slot and into alinement with said anvil. V

22. A machine for inserting a rivet in a piece of sheet material and clenching the same within a rivet cap having, in combination, an anvil, rivet inserting instrumena rivet cap having, in combination, rivet inserting instrumentalities, an anvil provided with a recess in its upper face, and a work support in two parts interposed between said rivet; inserting instrumentalities and said anvil said parts being movable away from each other and yielding means normally acting to move said parts toward each other, said parts having a chamber between their opposing edges arranged to receive a rivet cap.

24. A machine for inserting a rivet in a piece of material and clenching the same in a rivet cap having, in combination, rivet inserting instrumentalities, an anvil provided with a recess in its upper face, a work-support in two parts movable away from each other interposed between said rivet inserting instrumentalities and said anvil and yielding means normally acting to move said parts toward each other, said parts having a chamber between their opposing, edgesarranged to receive a rivet cap, the edges of said parts being beveled below said chamber whereby when said beveled edges contact with said anvil said parts will be forced apart and said rivet cap deposited in said recess.

25. A machine for inserting a rivet in a piece of material and clenching the same in a rivet cap having, in combination, rivet inserting instrumentalities, an anvil provided with a recess in its upper face, a work-support in two parts interposed between said rivet inserting instrumentalities and said anvil and movable toward and away from said anvil, said parts movable away from each other and yielding means normally acting to move said part-s toward each other, said parts having a chamber between their opposing edges arranged to receive a rivet cap.

26. A machine for inserting a rivet in a piece of material and clenching the same in a rivet cap having, in combination, rivet inserting instrumentalities, an anvil provided with a recess in its upper face, a work-sup port in two parts interposed between said rivet inserting instrumentalities and said anvil and movable toward and away from said anvil, said parts movable away from each other and yielding means normally acting to move said parts toward each other, said parts having a chamber between their opposing edges arranged to receive a rivet cap, the edges of said parts being beveled below said chamber whereby when said beveled edges contact with said anvil said parts will be forced apart and said rivet cap deposited in said recess.

27. A machine for inserting a rivet in a piece of material and clenching the same in a rivet cap having, in combination, rivet inserting instrumentalities, an anvil provided with a recess in its upper face, a worksupport in two parts interposed between said rivet inserting instrumentalities and said anvil and movable toward and away from said anvil, said parts movable away from each other and yielding means normally acting to move said parts toward each other, said parts having a chamber between their opposing edges arranged to receive a rivet cap, the edges of said parts being beveled below and above said chamber for the purposes specified.

28. A machine for inserting a rivet in a piece of material and clenching the same in a rivet cap having, in combination, rivet inserting instrumentalities, an anvil provided with a recess in its upper face, a worksupport in two parts interposed between said rivet inserting instrumentalities and said anvil said two parts being movable away from each other and yielding means normally acting to move said parts toward each other, said parts having a chamber between their opposing edges arranged to receive a rivet cap, said parts being normally separated by a slot arranged to guide a rivet into said chamber.

29. A machine for inserting a rivet in a piece of material and clenching the same in a rivet cap having, in combination, rivet inserting instrumentalities, an anvil provided with a recess in its upper face, a work-support in two parts interposed between said rivet inserting instrumentalities and said anvil said two parts being movable away from each other and yielding means normally acting to move said parts toward each other, said parts having a chamber between their opposing edges arranged to receive a rivet cap, said parts being normally separated by a slot arranged to guide a rivet into said chamber and mechanism constructed and arranged to move a rivet cap along said slot and into said chamber.

30. A machine for inserting a rivet in a piece of sheet material and clenching the same within a rivet cap having, in combination, an anvil, rivet inserting instrumentalities, a movable work-support interposed between said rivet inserting instrumentalities and said anvil, said work-support c0mprising two independent yieldingly mounted parts having a slot therebetween, said parts having their proximate opposing edges grooved and constituting a raceway for a rivet cap and mechanism constructed and arranged to move said rivet cap along said slot and grooves and into alinement with said anvil.

31. A machine for inserting a rivet in a piece of sheet material and clenching the same within a rivet cap having, in combination, an anvil, rivet inserting instrumentalities, and a movable work-support interposed between said rivet inserting instrumentalities and said anvil, said work-support comprising two independent yieldingly mounted parts having a slot therebetween, the proximate oppositely disposed edges of said parts being grooved and constituting a raceway for a rivet cap, said parts having a chamber between their opposing edges arranged to receive a rivet cap, said slot and chamber communicating with each other, one of said parts having a lateral projection thereon within its respective groove adjacent to said chamber, whereby a rivet cap may be locked within said chamber.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ARTHUR R. HAVENER.

Witnesses CHARLES S. Goooms, SYDNEY E. TAFT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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