US1716852A

US1716852A - Rivet-setting machine

Info

Publication number: US1716852A
Application number: US236465A
Authority: US
Inventors: Arthur R Havener
Original assignee: Judson L Thomson Manufacturing Co
Current assignee: Judson L Thomson Manufacturing Co
Priority date: 1927-11-29
Filing date: 1927-11-29
Publication date: 1929-06-11
Anticipated expiration: 1946-06-11

Description

June 11;. 1929. A, R HA ENER 1,716,852

RIVET SETTING MACHINE Filed Nov. 29, 1927 5 Sheets-Sheet 1 fzzvem/zforv flrhu/i" 19176112672671 June 11, 1929. R HAVENER 1,716,852

RIVET SETTING MACHINE Filed Nov. 29, 1927 5 Sheets-Sheet 2 f/vue Ta 607"" 2. f/ZLZBIZG)? June' 1' 929. A. R. HAVENER 1.716.852

RIVET SETTING MACHINE Filed Nov. 29, 1927 s Sheetsheet 3 x H JZ Patented June 11, 1929.

UNITED STATES PATENT OFFICE.

ARTHUR R. IIAVENER, OF WAYLAND, MASSACHUSETTS, ASSIGNOR- TO JUDSON L.

THOMSON MANUFACTURING (30., OF WALTHAM, MAS$ACHUSETTS, A. CORPORA- TION OF MASSACHUSETTS.

RIVET-SETTING MACHINE.

Application filed November 29., 192?. Serial No. 238,465.

This invention relates to a rivet setting machine and particularly to a type of machine adapted to rivet together a plurality of layers of sheet material in which the holes for receiving the rivets have previously been punched.

In the machine of this invention the work, which consists of several layers of sheet material, is placed upon a movable anvil which also constitutes a work support and driver, and said anvil has a central. yieldable anvil member which projects through the hole provided in the work to receive the rivet in a manner to position said work to receive said rivet. The rivet is then moved forwardly by a carrier until it aligns with the median axial line of the combined driver and anvil and that of a stationary tln'ust-sustaining member, in which position it is held by the central memberof the anvil. The outer member of the anvil then rises carrying with it the work until the latter is forced upon the rivet. During this time the central member of the anvil recedes into the outer anvil member. until the upper extremities of both of said anvil members are located in a position to co-operate with each other to finally clinch the eXtremity of the rivet against the work.

The object of this invention is to provide a. machine for accomplishing the above-mentioned results said machine including a mechanism for preventing the transfer of a rivet from its holder to the rivet carrier if'for any reason the rivet is not correctly positioned within the rivet holder.

The invention consists in a rivet setting machine as set forth in the following specification and particularly as pointed out in the claims thereof. v

Referring to the drawings: I

Figure 1 represents a front elevation of a rivet setting machine embodying my invention, certain portions of said machine being broken away to save space in the drawing.

Fig. 2 is a left hand side elevation of the machine. i

Fig. 3 is a right hand side elevation of the lustrating a step in the operation of the machine.

Fig. 6 is a view similar to Fig. 5, illustrat ing still another step in the operation of the machine.

Fig-7 is'a plan view of the rivet carrier.

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

In the drawings, 10 is the main frame of the machine and 11 is a stationary stud or shaft upon which a driving pulley 12 is rotatably mounted. Formed integral with the hub of the driving pulley 12 is a pinion 13 which meshes with a gear 14 journalled to rotate upon a crank shaft 15, said gear forming one member of a clutch 16. Another member 17 of said clutch is rigidly fastened to the shaft 15. The two

members

1 and 17 of the clutch 16 are clutched together as one piece by a suitable mechanism, not illustrated in its entirety in-the drawing but well known to those skilled in the art, this mechanism being operated from a foot treadle, not shown in the drawing, by llPfiIlS of a treadle rod 18, see Fig. 4:-

The rivets 19 employed in this machine are of a well-known tubular type and are located in a mass within a hopper 20, from which they are transferred in a well-known manner to a raceway-21, down which they slide and are transferred one at a time by a slide 22 to another raceway 23 from which they drop into a holder-24L. The rivet holder 24 consists of two

members

25 and 26 fast to

springs

27 and 28 respectively. said springs being attached to an auxiliary frame 29 which is mounted upon the top of the frame 10. A spring 30 is also provided for the rivet holder 24, said spring being U-shaped in construction and engaging the outer side surfaces of the

springs

27 and 28.

The slide 22 is operated to transfer a rivet from the raceway 21 to the raceway 23 by a rod 31 which is mounted in a collar 32 in turn mounted upon a. pivotal pin 33 for a lever 84, the operation of which will be hereinafter more fully described. The collar 32 is held in frictional engagement with a side of the l 34 by a spring 35 which is interposed between a side of the collar 32 and side of a washer 36, which is in turn secured to an extremity of the pin 33. lVith each rocking movement of the lever 3a the rod 31 will be operated to move the slide 22, except in certain instances when the improper positioning of a rivet in the slide 22 may cause the latter to am at which time the slide will fail to function because of the frictional engagement of the collar 32 with the lever Set.

After the rivet has been deposited in the holder 24:. it. is transferred therefrom to a carrier 37 which is mounted upon a slide 38 in turn mounted to reciprocate between the auxiliary frame 29 and ways 39 pro vided upon the main frame 10. The rivet carrier 37 is constructed of spring steel and embodies therein a pair of resilient lingers 4L0 upon which the head of the rivet 19 rests and between which said rivet is gripped, see Fig. 7.

Slidably mounted in the auxiliary'frame 29 is a plunger 41, the longitudinal median line of which is coincident with that of the rivet holder A. The plunger ll is connected at its upper end at 42 to one extremity of the lever 3d. The lever 3% is pivotally mounted upon a member 43 in turn pivotally mounted at n to the auxiliary frame 29. A rocking motion is imparted to the lever 3-.t by a connecting member 45 consisting of links =16 and 47, both of which are pivotally connected together at d8, while one end of the link 4C6 is pivotally connected at l?) to the lever 34 and the other end of the link 47 is pivotally connected at 50 to an arm 51 formed integral with a strap 52 which is clamped to a crank 53 of the crank shaft 15.

The end portion of the link 47 which is attached to the link 46 is bifurated at 5% to receive the link 46 and a projection 55 is formed upon the link 4t? having a face 56 for engagement with an edge of the link 46. The face 56 of the projection 55 of the link 47 is held in engagement with the edge of the link 46 by a spring 57, one end of which is connected to the link t6 and the other end being connected to the lever lVhen the links t6 and 47 of the conneeting member 45 are located in their normal operative positions, the axis of the pivotal pin t8 will be slightly out of align ment with a straight line intersecting the axes of the pivotal pins 4.9 and 50.

During the normal operation of the machine, if the rivets are correctly positioned within the rivet holder 24, the connecting member 45 will function in the usual well known manner to rock the lever 34, but if the rivet is not properly positioned within the rivet holder and there is excessive resistance offered to prevent the proper trans fer of said rivet from the holder 24 to the carrier 37, the connecting member 45 will break at the pivot 48 causing the links a6 and 4.7 to assume the positions illus t-rated in dotted lines in Fig. at and prevent the lever 34: and plunger 41 from functioning to complete the transfer of the rivet from the holder to the carrier. After the n'iispositioned rivet has been either removed from the holder or correctly positioned therein, the links ft and t? are replaced in their normal positions as illustrated in full lines in Fig. 4.

A pin 58 is mounted in the anain frame 10, projecting upwardly therefrom and terminating adjacent to the under surface of the rivet carrier 3'1", and said p n acts to support the outer end of the rivet carrier and prevent the same from springing downwardly too far when the rivet is transferred from the holder 24 to the rivet carrier.

Mounted upon the top surface of the main frame 10 beneath the central portion of the auxiliary frame 29 is a thrust sustaining block 59, in which a thrust member 60 mounted, the aeris of said member being in alignment with the axis of the driving in strumentalities.

The rivet carrier 37 is moved from its rearward position beneath the rivetholder flit to a position where the rivet carried thereby will be in alignment with the rivet setting instrinnentalities by a mechanism as follows :-Projecting downwardly from the slide 38 a stud (51 which' is connected at 62 to a link 63 in turn connected at (it to an arm 65 rigidly fastened to a rock shaft 66 mounted in the main frame 10. Another arm 67 is rigidly fastened to the rock shaft 66 and said arm is connected by an adjust-- able connecting rod 68, provided with a turn buckle (59 to a lever 70 which is pivoted at 71 to the main frame 10. One end oi. the connecting rod (38 is adjustaliily secured at 72 to the arm 67 and the opposite end of said connecting rod is pi votally connected at 73 to the lever 70. The lever ill carries a cam roll 7st which is held in engagement with a cam 75 fast to the crank shaft. 15 hi a spring 76. i

The mechanism for driving and clinching}; the rivet is as follows:Slidably mounted in the main frame 10 is a vertically (lisposed plunger slide 77. The slide 77 is provided. with an internal bore 78, in which a combined driver anvil and work support 79 is mounteth being adjustable vertically within said bore by manipuh 1g a nut 8 0 and lock nut 81. At its lower extremity the plunger slide 77 connected at F2 to the forward end of a lever 83 which is pivotally mounted at 84: upon a link which is in turn SUSPQIHIlQd upon a pivotal pin 56 mounted. in the frame 10. At its rear end the lever 83 is connected at 8'? to a screwthreadcd member 88 which is adjui-itablv mounted within an arm 89 which projects dmvnwardly from the strap i The combined driver, anvil and work support 79 embodies therein an outer member 90 which is provided with an internal bore 91, in

loo

which an inner anvil and rivet positioningmember 92 is slidably mounted. The outer anvil member 90 has a clinching surface .93 formed upon its upper extreu'iity and the inneranvil member has a clinching surface 94 formed upon its upper extremity and said inner anvil member is yieldingly mounted upon a spring 95 and is r-ecedable into the outer anvil member 90 until the clinching surfaces 93 and94 are in a post-ion to co-operate with each other to perform the clinching operation upon the rivet 19 as illustrated in Fig. (3. A plug 96, located at the bottom of the anvil member 90 acts as a stop to prevent further downward movement of the inner anvil member 92 when the clinching surfaces of the anvil members are positioned to perform the clinching operation.

The general operation of the mechanism hereinbefore specifically described is as follows :-Assuming the various parts to be in the relative positions illustrated in Figs. 1 to 4 inclusive, the work A,'which in the present instance consists of seve 'al layers of sheet material having various characteristics, is placed upon the upper extremity of the member 90, with the member 92 projecting upwardly through a hole which has previously been punched in the work. The machine is then started by means of a treadle, not shown, and its connecting rod 18 which causes the clutch 16 to rotate the crank shaft 15 and thus the rivets 19 are fed down the

raceways

21 and 23 to be delivered one by one into the rivet holder 24:.

A rivet 19 having been transferred from the holder 24 to the carrier 37 during the la tter part of the previous cycle of the machine, as soon as the machine is again started the cam will immediately cause the slide 38 to move forwardly carrying with it the rivetcarrier 37 until the rivet 19, which is held between the fingers 10 of said rivet carrier, is located in alignn'ient with the axis of the combined driver, anvil and work support 79.

While the rivet carrier 37 is moving forwardly the plunger slide 77 is moving upwardly andwhen the rivet 19 arrives in position in alignment with the slide 77, the upper extremity of the inner anvil member 92 will enter a tubular recess in the low-er extremity of the rivet 19 and will lift the head portion of said rivet from the upper surface of the fingerslO of the. carrier 37 and clamp the rivet against the lower surface of the thrust sustaining member 60 as illustrated in Fig. 5. he rivet carrier 37 will then immediately retreat and the slide 77, carrying with it the combined driver, anvil and work support 79, will continue upwardly carrying with it the work A, until said work has been pushed upon the rivet 19.

During the upward movement of the menr ber 79 the inner anvil member--92 recedes into the bore 91 of the outer anvil member until the lower extremity of said inner anvil member contacts with the upper extremity of the plug 69, at which time the clinching surface 93 of the outer anvil member and the clinching surface 94- of the inner anvil member will co-operate to roll over and clinch the lower portion of the rivet 19 against the under surface of the work and firmly clinch said rivet to said work. The plunger slide 77 will then move dmvnwardly carrying with it the

members

79 and 92, and during said downward movement the member 92 will emerge from the member 79 and return to its normal position. The. work may now be removed entirely from the machine or repositioned to receive another rivet.

While the plunger 77 moving dmvnwardly the crank 53, to which the lever 83 is operatively connected, is moving upwardly and during this upward movement of the crank, the mechanism for transferring the rivet from its holder 2-1 to the carrier 37, which includes the

links

16 and 17, lever 3 1 and plunger a l, is functioning to perform the transfer of said rivet, but if, for any reason, the rivet is not properly positioned between the

members

25 and 26 of the rivet holder and excessive resistance is offered against the downward movement of the plunger ll, the links so and 17 will break t the connection 18 by springing rearwardly into the dotted line position shown in Fig. at, thereby preventing a possible jamming of the rivet in-the holder or improper transfer of the rivet from the holder to the rivet carrier.

'Although a special form of work is illustrated in these drawings,it is evident that any form of work consisting of one or more layers of material may have rivets inserted therein withoutdeparting from the spirit of this invention.

I claim: 7

1. A rivet setting machine having, in combinatioma rivet holder, a rivet carrier. reciprocating means to transfer a rivet from said holder to said carrier, a combined driver and anvil, a thrust sustaining member, means to move the carrier to position the rivet be tween the driver and thrust sustaining member, and means to operate the driver to clinch the rivet. i

2. A rivet setting machine having, in combination, a rivet holder, a rivet carrier, reciprocating means to transfer a rivet from said holder to said carrier, a combined driver and anvil, a thrust sustaining member, means to move the carrier to position the rivet between the driver and thrust sustaining member, and means to operate the driver to first lift the rivet from the carrier into engagement with the thrust sustaining member and finally clinch the rivet to the work.

3. A rivet setting machine having, in combin ation, a rivet holder, a rivet :arrier, means to transfer a rivet from said holder to said carrier, :1 driver embodying therein a positioning pin and having a clinching surface formed thereon, a thrust sustaining member, means to move the carrier to position the rivet between the positioning pin and thrust sustaining member, and means to operate the driver to clinch the rivet.

i. A rivet setting machine having, in combination, a rivet holder, a rivet carrier, means to transfer a rivet from said holder to said carrier, a driver embodying therein a posit-ioning pin and having a clinching surface formed thereon, a thrust sustaining member, means to move the carrier to position the rivet between the positioning pin and thrust sustaining member, and means to operate the driver to first cause the positioning pin to lift the rivet from the 'arrier and hold the same against the thrust sustaining member and finally clinch the rivet to the work.

5 A rivet setting machine having, in combination, a rivet holder, a rivet carrier, means to transfer a rivet from said holder to said carrier, a driver embodying therein an outer work supporting member and a centrally disposed positioning pin, a thrust sustaining member, means to move the carrier to position the rivet between the positioning pin and thrust sustaining member, and means to operate the driver to first cause the rivet to be gripped between the positioning pin and thrust sustaining member, and finally to clinch the rivet to the work.

6. A rivet setting machine having, in combination, a rivet holder, a rivet carrier, means to transfer a rivet from said holder to said carrier, a driver embodying therein an outer work supporting member and centrally disposed yieldable positioning pin, said memher and pin being provided with cooperating clinching surfaces, a thrust sustaining member, means to move the carrier to position the rivet between the positioning pin and thrust sustaining member, and means to opcrate the driver to first cause the rivet to be gripped between the positioning pin and thrust sustaining member, and finally to clinch the rivet to the work.

7. A rivet setting machine having, in combination, a stationary rivet holder, a recip rocatory slide, a rivet carrier attached to said slide, means to transfer a rivet from said holder to said carrier, a driver embodying therein an outer work supporting member and a centrally disposed yieldable positioning pin, said member and pin being provided with cooperating clinching surfaces, a thrust sustaining member, means to move the slide and carrier to position the rivet between the positioning pin and thrust sustaining member, and means to operate the driver to first cause the rivet to be gripped between the positioning pin and thrust sustaining memher, and finally to clinch the rivet to the work.

8. A rivet setting machine having, in combination, a stationary rivet holder, a reciprocatory slide, a rivet carrier attached to said slide, means to transfer a rivet from said holder to said carrier, a driver embodying therein an outer work supporting member and a centrally disposed yieldable positioning pin, said member and pin being provided with cooperating clinching surfaces, a thrust sustaining member, a driving shaft, a cam on said shaft, and means operatively connecting said slide and said cam adapted to move the slide and carrier to position the rivet between the positioning pin and thrust sustaining member, and means to operate the driver to first cause the rivet to be gripped between the positioning pin and thrust-sustaining member and finally to clinch the rivet to the work.

9. A rivet setting machine having, in combination, a rivet holder, a rivet carrier, means to transfer a rivet from said holder to said carrier, said means including means to prevent the operation of said transfer means if excessive resistance is offered by the rivet within the holder, a combined driver and anvil, a thrust sustaining member, means to move the carrier to position the rivet between the driver and thrust sustaining member, and means to operate the driver to clinch the rivet to the work.

10. A rivet setting machine having, in combination, a rivet holder, a rivet carrier, a plunger adapted to engage a rivet within said holder and transfer the same to said carrier, a lever for said plunger, a driving shaft, a crank on said shaft, a collapsible connection interposed between said crank and lever, whereby the plunger is prevented from operating to transfer the rivet if excessive resistance is offered by said rivet within the holder, a combined driver and anvil, a thrust sustaining member, means to operate the carrier to position the rivet between the driver and thrust sustaining member, and means'to op crate the driver to clinch the rivet to the work.

11. A rivet setting machine having, in combination, a rivet holder, :1 rivet carrier, a plunger adapted to engage a rivet within said holder and transfer the same to "said carrier, a lever for said plunger, a driving shaft, a crank on said shaft, a connecting member comprising a pair of links, pivots coimecting said links to each other and to said crank and lever, the axial line of the pivot joining the links to each other being out of alignment with a straight line connecting the axial lines of the other pivots, a combined drivcrand anvil, a thrust sustaining n'iember, means to move the carrier to position the rivet between the driver and thrust sustaining member, and means to operate the driver to clinch the rivet to the work.

12. In a rivet setting machine a rivet holder, a rivet carrier, and means to transfer a rivet from said holder to said carrier, said means embodying therein a plunger adapted to engage the rivet within said holder, a lever for said plunger, a driving shaft, a crank on said shaft, and a collapsible connection interposed between said crank and lever, whereby the plunger is prevented from operating to transfer the rivet from the holder to the car ricr if excessive resistance is offered by the rivet within the holder.

13. In a rivet setting machine a rivet holder, at rivet carrier, and means to transfer a rivet from said holder to said carrier, said means embodying therein a plunger adapted to engage the rivet within said holder, a lever for said plunger, a driving shaft, a crank on said shaft, and a connecting member comprising a pair of links, pivots connecting said. links to each other and to said crank and lever, the axial line of the pivot joining the links to each other being out of alignment with a straight line connecting the axial lines of the other pivots.

14-. In a rivet setting machine a rivet holder, a rivet carrier, means to transfer a rivet from said holder to said carrier and embodying therein alevcr, a raceway, a slide adapted to support a column of rivets in said raceway, means to move said slide to release a rivet, whereby the same will drop into the rivet holder, said means embodying therein a collar having frictional. contact with the lever and rocking in unison therewith, and a rod mounted in said collar and engaging the slide.

15. A rivet setting machine having, in combination, a rivet holder, a rivet carrier, reciproeating means to transfer a rivet from said holder to said carrier, a combined driver, anvil and work support, a thrust sustaining .i'i'iember, means to move the carrier to position the rivet between the driver and thrust sustaining member, and means to operate the driver to force the work upon the rivet and clinch the rivet to the work.

16. A. rivet setting machine having, in combination, a rivet holder, a rivet carrier, a d

, ing member, and means to operate the driver to successively lift the rivet from the carrier into engagement with the thrust sustaining member, force the Work upon the rivet and clinch the rivet to the Work.

17. A rivet setting machine having, in combination, a rivet holder, a rivet carrier, means to transfer a rivet from said holder to said carrier, a driver also constituting a work support and embodying therein a positioning member and having a clinching surface formed thereon, a thrust sustaining member, means to move the carrier to position the rivet between the positioning member and thrust sustaining member, and means to operate the driver to cause the positioning member to lift the rivet from the carrier and hold said rivet against the thrust sustaining member, force the work upon the rivet and clinch the rivet to the work.

18. A rivet setting machine having, in combination, a rivet holder, a rivet carrier, means to transfer a rivet from said holder to said carrier, a driver embodying therein an outer work supporting member and centrally disposed yield able positioning pin, said member and pin being provided with cooperating clinching surfaces, a thrust sustaining member, means to move the carrier to position the rivet between the positioning pin and thrust sustaining member, and means to operate the driver to cause the positioning pin to lift the rivet from the carrier and clamp the Same against the thrust sustaining member, to force the work upon the rivet and clinch the rivet to the work.

In testimony whereof I have hereunto set my hand.

ARTHUR R. HAVENER.