US508371A - Riveting-machine - Google Patents

Description

(No Model.) i 3 Sheets -Sheet 1.

J. R. CONNOR. RIVETING MAG'HINE.

No. 508,371. Patented Nov. 7, 1893.

NHIIII W/TN ESSES: INVENTOI? c .flm/m %J7?M ATTOHNE r51 E NATIONAL LITHOGRAFNING COMPANY.

(No Model.) 3 SheetsSheet 2 -J. R. CONNOR. RIVETING. MACHINE.

No. 508,371. Patented Nov. 7,1893.

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n VWI/TNESSES: INVENTOI? A TTOBNEXS' (No Model.) 3 Sheets-Sheet 3.

J. R, CONNOR. RIVBTING MACHINE.

' No. 508,371; v Patented Nov. 7, 1893.

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UNITED STATES PATENT OFFICE.

JOHN R. CONNOR, OF FRANKLIN, PENNSYLVANIA, ASSIGNOR OF FIVE-SIXTHS TO CHARLES STRATTON, OF SAME PLACE, CHARLES E. STRATTON, HENRY STRATTON, AND J. C. OSBORNE, OF

VILLE, PENNSYLVANIA.

RIVETING- ERIE, AND J. F. WHITE, OF MEAD- MACHINE.

SPECIFIGATION forming part of Letters Patent No. 508,371, dated November 7, 1893.

Application filed June 15, 1892.

To all whom it may concern.-

Be it known that I, J OHN R. CONNOR, a citizen of the United States, residing at Franklin, in the county of Venango and State of Pennsylvania, have invented certain new and useful Improvements in Riveting-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to riveting machines and consists in certain improvements in the construction thereof, as will be hereinafter r 5 fully described and pointed out in the claims.

The invention is illustrated in the accompanying drawings as follows:

7 Figure 1, is a side elevation. Fig. 2, is a front elevation. Fig. 3, is a vertical section on the line 11, in Fig. 1. Fig. 4, is a longitudinal section on the line 2-2, in Fig. 2, with the scale increased. Fig. 5, is a fragment of the horn or mandrel A in like section to Fig. 4, on a still larger scale. Fig. 6, is a transverse section of the horn A in the line 44 in Fig. 4. Fig. 7 is a top or plan view of the horn A with parts broken away to show construction. Fig.8, is a perspective View of the rivet conveyer D of the horn A removed. Fig. 9, is a side elevation of the rotating rivet hopper L with parts broken away. Fig. 10, is an end View of the hopper L partially in vertical section.

The machine is intended for riveting arti- 3 5 cles made of sheet metal, leather, canvas, &c.,

, such as stove pipes and other sheet metal tubes, hoops, tin ware, leather and other belting leather and canvas bags or tubes, such as hose and many other like objects.

The machine here illustrated is provided with a long slim horn or mandrel A and is intended for tube riveting, and can be used on any light objects. Where the work is heavier such as barrel hoops the horn would better be made stronger than is shown in the drawings.

The machine feeds the rivets from the hopper to the point where they are to be riveted Serial No. 436,324- (No model.)

and. there first punches the rivet through the material and then upsets or rivets it.

I The construction and operation of the-machine is as follows, reference being had to the drawings and the letters of reference marked thereon.

,A, is the base or column of the machine, and A the horn, mandrel or anvil, that sustains the rivet and the matter to be riveted, and is preferably cast integral with the column. V

A is the upper frame work or cross arm, with upwardly extending arms A A in which are formed journals (1 a of the driving shaft B.

O, is the driving wheel which is loose on the shaft and communicates motion to the shaft through the sliding clutch E, which may be feathered to the shaft and engage the wheel 0 in any common manner. The clutch E is moved by an elbow lever E which is operated from a treadle E in convenient position for the foot of the operator as he stands at the end of the mandrel. The connection between the treadle and the elbow lever is through the rod E lever E which is pivoted at 6 and the spring connecting link e On the vertical end of the elbow lever E below the yoke which engages the clutch E, there is a sliding block 6, and on the Wheel 0 there is a cam c, and below the block 6 there is a spring e which holds the block up. When the block is up the cam a will contact with it and throw the lever E back so as to disengage the clutch. The lever E at its inner end rests upon a pinon'said block, and therefore, when the treadle is depressed the block will be depressed by the lever E, at the same time said lever raises the outer end of the lever E. Hence when the treadle is depressed the block e is drawn down out of reach of the cam O, and the clutch can engage and keep in engagement with the Wheel 0; butas soon as the foot is removed from the treadle the block will be pushed up by the spring e and the cam 0 will contact with it and disengage the clutch positively and before the shaft can make a full revolution.

On the front end of the shaft 13, just outside of the bearing a there is acrank B. A pitman F connects this crank with a wrist f that extends back from a sliding block F that is guided in ways a a on the front face of the frame work A A revolution of the shaft B will, through the crank B, and pitman F cause the block F to reciprocate vertically. A plunger G is held in lugs on the face of the block F and is adjustable by nuts 9 g and in the lower end of the plunger is a riveting bit G A sleeve G surrounds the lower end of the plunger and is guided within the lower lug on the block F, and on the lower end of this sleeve are two laterally yielding parts G which extend below the riveting die and form a female punch die. At the top of the sleeve G there is a bridge piece g which is firmly fixed to the sleeve and extends across it and lies within a slot in the plunger. In the same slot and above the bridge g there is pivoted at 9 an elbow lever G the depending shortarm of which rests on the top of the bridge, and while this lever bears on the bridge the sleeve and plunger will move as one piece, but when the lever is removed from the bridge, as shown by dotted lines in Fig. 3, the sleeve can move up on the plunger, or rather the plunger can move down through the sleeve, and this will occur when the parts G are pressed down upon the horn A. The lever G is moved at the proper time to allow the sleeve to become free of the plunger by the long or horizontal arm of said lever coming in contact with the lower of two pins 0. on the guide a and it is moved back again by said arm contacting with the upper of said pins when the plunger moves up. Around the sleeve G below the block F and above the pieces G3 is a coiled spring to cause the pieces G3 to exert pressure upon the metal below it after the lever G has been thrown away from the bridge. After the sleeve has been thus made free from the plunger and the parts G are in contact with the metal below them the plunger continues to descend upon the riveting die, passes between the parts G3 and strikes upon the rivet.

The operation of punching and riveting may be herein briefly stated as follows: The object to be riveted lies upon the horn A below the punching and riveting means, and the rivet is in place upon the horn below the material to be riveted. The plunger descends carrying the sleeve with itand the female punching die G is forced down upon the material to be riveted directly above the rivet and thereby the rivet is punched up through the material; at this point the lever G is tripped off the bridge g and the plunger G is free of the sleeve and will continue to descend within the sleeve and the riveting die G2 will push aside the parts G and press upon and upset the rivet.

The means for feeding the rivets into place below the punching and riveting device are as follows: On the cross arm A of the frame snee /1 work, just back of the upright A a rivet hopper is located. As illustrated this hopper L is a rotary device and is operated by a belt running over a pulley Z on the driving shaft B. I do not intend to be limited to the use of a rotary hopper for there are many forms of feeding hoppers that can be used in this connection. However, I consider my revolving hopper advantageous and preferable and also novel and shall claim the same as new. The hopper L consists of two dish formed disks placed with their concavities facing each other thus forming a hollow disk-formed receptacle. The two parts are placed sulficiently distant from each other to form a circumferential slot, or opening, M around the inner cavity that is of such width as to admit the stems of the rivets which are contained in the hopper. As the hopper revolves the rivets will find their way into the slot M. At intervals there are tangential channels N which are wide enough to admit the heads of the rivets and by these channels the rivets R can escape. At theinner mouths of the channels N there are guards P that prevent the rivets entering the channels except such as have their stems within the slot M. In Fig. 9, an arrow shows the direction of motion of the hopper, and a rivet R is shown as just leaving the outer mouth of one of the tan gential channels N. It will there be seen that the rivets in leaving the hopper move by gravity in the opposite direction from that in which the hopper moves. The rivets are prevented from leaving the hopper except when at the proper point of discharge, by gates S that are kept closed by springss except when the opposite cam-faced ends of the gates come in contact with a block S and move them back against the action of the springs s. This construction is clearly shown in Fig 10. On the hopper there are pins 0 that are located in advance of the gates S. These pins will remove any rivets that may have caught in the mouth of the channel L before a new rivet is deposited at that point by the hopper. As the rivet leaves the hopper it falls into a vertical channel L. By observing Fig. 4, it will be seen that the rivets in descending in said channel are intercepted bya worm wheel K on the'vertical shaft K that is actuated by the shaft B through the miter-gears 7c, and as this shaft K only revolves when the riveter is in action the passage of rivets past the worm K will be periodical. the rivets striking in the channel L after they have passed the worm a tappet hammer I is made to strike the channel at each revolution of the shaft B by being caughtby the catch arm I that is on a vibrating lever D and pulled back and then released and allowed to fall by gravity against the channel; a catch 4; on the hammer I and 'i on the arm 1 serving to establish the engagement.

In a channel a on the top of the horn A there is a reciprocating rivet conveying bar D having catches d atintervals thereon.

ICC

To prevent The rivets R ride on the bar D with their heads down and stems sticking up through a slot between the two side lips a a The conveyer'bar D is connected with a sliding block D that is connected by arod d with a vibrating lever D that is yoked arounda cam D on the shaft B and is pivoted above the cam at d to a bracket. The cam D acts to vibrate the lever D and it in turn reciprocates the block D and conveyer bar D Rivets are drawn from the lower mouth of. the channel L by a clawR (see Figs.4 and 8) which rides up on a cam r by its arm 0" coming in contact with said cam and drops over the end of the cam and back of a rivet, and then as the block D moves back it passes below the cam r and draws the rivet back with it and places it on the conveyor bar D in position to be conveyed through the channel on the horn. As the conveyer D moves forward, the projections 61 carry the rivets ahead and when the bar D moves back the rivets are held against going back by spring dogs Hin the side of the channel as seen in Fig. 7. When the rivet reaches position under the riveter it comes against, and its head slips under a holder D as seen in Figs 5 and 7, most clearly. In Fig. 5, it will be seen that the bar D has also taken position above the head of the rivet. As soon as the punching operation is completed and just before the riveting is done the holder D and bar D are drawn back ofi the rivet head. The bar D is drawn back in its ordinary reverse action and the holderD byaforward movement of a bar D within the born A to which the holder D is pivoted at d, which movement allows the holder to drop down out of the way, the horn A being cut away to permit this. See a Fig. 5. The bar I) is moved by the lever D that is connected with the lever D by a link d The lever D acts by its heel against a spring d". The bar D is reacted by a spring d (See Fig. 4:, for the best illustration of this construction.)

What I claim as new is 1. In a riveting machine, the combination of an anvil for supporting the object to be riveted and the rivet, a reservoir for the rivets, a conveyer in said anvil for conveying the rivets from the reservoir to the point of use, a holder for holding the rivet, a reciprocating plunger acting above and in vertical line with said holder and carrying a female punching die the former being within the latter and a riveting die that act successively upon the rivet first to punch the rivet through the material, and next to upset the protruding end of the rivet and means for operating the moving parts in timely order.

2. In a riveting machine, the combination of a horn or anvil for sustaining the rivet and the article to be riveted, a conveyer in said horn for conveying rivets to the point of use, a holding device in said horn for holding the rivet in place for use, a reservoir or hopper for holding rivets, a feeding device for feeding rivets from the hopper to the rivet conveyer in the born, a plunger carrying a female punching die and a riveting die that act upon the rivets when in place upon the horn, and proper mechanism for moving the acting parts in timely order.

3. In a riveting machine, the combination of an operating shaft, a driving wheel loose upon said shaft, a clutch operated by a treadle for bringing the shaft into operation from said driving wheel, a reciprocating plunger driven from said shaft, a female punching die carried by said plunger, arivet feeding mechanism driven from said shaft, a horn or anvil for holding the rivet and article to be riveted and a conveyer in said anvil for carrying rivets to the point of use that is operated from said shaft.

4. In a riveting machine, the combination with the driving shaft, of a vertically sliding block F, the plunger G, carrying die G2 and held upon said block, the sleeve G carried by said plunger and having at its lower end the female punching die G the bridge g on the sleeve G within a slot in a plunger and the tripping lever G carried by said plunger and acting upon said bridge.

5. In a riveting machine the combination with the anvil A of the holder D the sliding bar D carrying said holder, the lever D that moves said bar, and gearing for actuating said lever from the driving shaft B.

6. In a riveting machine the combination with the anvil or horn A of a rivet way formed in the top of said anvil, extending from the base of the same to its outer end, a conveyer bar D for moving the rivets'in said way, a reciprocating block D that carries said conveyer bar and gearing for moving said block from the action'of the driving shaft B.

7. In a riveting machine, the combination with the horn or anvil A of a rivet way formed in the top of said horn, a reciprocating bar D having shoulders d for moving the rivets forward and spring dogs H for bolding the rivets against reaction as the bar D moves back.

8. In a riveting machine the combination with the horn or anvil that supports the article to be riveted and the rivet, of achannel formed in the top of said horn extending from its base to the outer end a conveyer in said channel for carrying the rivets to the point of use, a hopper for holding rivets and a feeding device for transferring rivets from the hopper to the conveyer in the horn.

9. In a riveting machine, the combination with a rivet conveying channel, of a rotating disk-formed hopper having a peripheral slot, M, for receiving the stems of the rivets and tangential slots, N, for receiving the heads of the rivets.

10. In a riveting machine, the combination with the rotating disk-formed hopper L having discharging channels N and the sliding gates S over the mouths of said channels, of the feeding tube or channel L and means for opening said gates as the discharging mouths L and the rotating discharging hopper L of come opposite the receiving mouth of said pins 0, on the periphery of said hopper, that feeding tube. are in advance of the discharge openings from [5 11. In a machine of the class herein shown, said hopper, and serve to clear the mouth of 5 the combination with the actuating parts of the channel L in advance of the depositing a hollow, disk-formed, rotating hopper having therein of a new rivet. the interior circumferential channel M, the In testimony whereof I aifix my signature in tangential discharging channels N and movpresence of two witnesses.

able gates closing the outer mouths of said JOHN R. CONNOR. 1o discharging channels. Witnesses:

12. In a machine of the class herein shown, J NO. K. I-IALLOCK,

the combination with the receiving channel H. O. STRATTON.

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