US659626A - Riveting-machine. - Google Patents

Description

No. 659,626. Patentedf oct.' 9, |900.

H. C. PMERDY,

RWETINGMAGHINE.

(Application filed Dec. 1l, 1899;)

(No Modal.) f 2 Sheets-Sheet l.

fame/ 5037,

lidiar/mugl arten STATES PATENT OFFICE.

HENRY C. POIWIEROY, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-FOURTH TO FRED H. SMITH, OF SAME PLACE.

RIVETING MACHINE.

SPECIFICATION forming` part of Letters Patent No. 659,626, dated October 9, 1900.

Application filed. December 11,1399. seria No. 739,984. iNo model.)

To all whom t may concern:

Be it known that I, HENRY C. POMEROY, a citizen of the United States, residing at Chicago, in the county of Cook, State of I-llinois, have invented certain new and useful Improvements in Riveting-Maohines, of which the following is a speciication, reference being had therein to the accompanying drawings.

This invention relates to riveting-machines, and particularly to improvements in the means for retaining in position the rivets prior to their insertion through the material to be operated upon.

The invention has for an object to provide an improved structure whereby a rivet may be supported upon a post by its head or base and its shank projected upward beneath the material to be operated upon, or the rivet may be supported above said material with its shank projecting downward toward the material.

Other objects and advantages of the invention will hereinafter appear in the following description, and the novel features thereof will be particularly pointed out in the appended claims.

In the drawings, Figure l is an elevation of the machine with the foot-power mechanism applied thereto. Fig. 2 isa vertical section through the post for supporting the rivet with its shank upward. Fig. 3 is a vertical section through the jaws for supporting the rivet with its shank downward and illustrating a modied form of supporting-spring for said jaws. Fig. 4 is a rear elevation of the rivet-supporting jaws. Fig. 5 is a detail perspective of the rivet-supporting jaws with the parts separate and illustrating the supportingspring shown in Fig. l, and Fig. 6 is a detail showing the means of connecting the foot-power mechanism with the operatinghandle of the machine.

Like letters of reference indicate like parts throughout the several figures of the drawings.

The letter A designates any suitable form of framework for supporting and containing the several parts of the riveting mechanism and is mounted upon any desired supportfor instance, as shown at B. In the present instance the framework is shown as provided with a pivoted vise-j aw A', adapted to be operated by means of a threaded rod A2 and hand le A3, said jaw being automatically opened when the rod is rotated in one direction by means of a spring A4. The upper part of the frame is also provided with the usual pivating-lugs A5 for supporting the handle C. This handle is provided with the usual camsurface C and operates upon a plunger D for the purpose of forcing the rivet through the material and afterward heading the same. The foregoing parts may, however, be of any desired construction, as my invention relates particularly to improvements in the rivet-holding mechanism to be hereinafter described.v

For the purpose ot' supporting a rivet with its shank upward I have devised an improved structure of post over that shown in my allowed application filed July 27, 1898,Serial No. 687,035. The forward part A6 of the frame A is provided with a recess A7, having an aperture AS at it-s base. Into this recess a removable supporting post and sleeve are introduced, as shown at Fig. 2. The post E is provided at its lower portion with a supporting-block `E and at its upper portion with a sleeve E2, adapted to support material above the shank of the rivet resting upon the post E. This sleeve is normally held in an elevated posi-r tion, as shown in Fig. 2, by means of a coiled spring E3, operating against an annular flange E4 upon the inner face of the sleeve E2, and the lower portion of said sleeve is seated in a recess E5, formed in the block E". Beneath the flange E4 is a depending stop E6 to limit the downward movement of the sleeve when the same has passed below the upper face of the supporting-head E7 upon the post E. It will be seen that the annular flange E4 limits the upward movement of the sleeve, while the stop E6 limits its downward movement, and all of the parts of the post, sleeve, block, and spring are so riveted together that they may be removed from the socket or recess A7 in the frame and replaced by a different size of sleeve and post for use in connection with various sizes of rivets. This removal is effected by means of a tool introduced through the opening A8, by which the block E' may IOO be forced upward Vto remove the post, sleeve, block, and spring from the recess. It will thus be seen that rivets having different sizes of head or base can he used in the machine by simply changing the size of post and sleeve located in the recess. The plunger D in its descent forces the rivet through the material and heads the same, as described in the abovementioned application and is common in this art. If it be desired, however, to support the rivet with its shank projecting downward, the jaws F may be used. These jaws are pivoled upon a collar F by means of a stud F2 at the back thereof, and each jaw is provided with an angle arm or finger F3, provided with a tapering seat F4, within which the rivet may be supported. The jaws may be secured upon the stud F2 by means of a securing-nut F5 or in any desired manner and are held in contact with each other and withfa centering-stop F6 by means of a tension-spring F7, supported upon the stud F2 and provided with angular ends F8, adapted to engage each of the jaws, preferably by entering a recess in the same. The collar F' is provided with an aperture F9, through which the plunger D passes, and said plunger is provided atits lower .end with a tapered portion D', which in its downward movement engages the tapering sockets F4 in the arms F3 of the jaws F, thus forcing the same apart and releasing the rivet when the shank of the saine has come into contact with the material operated upon.

For the purpose of permitting a preliminary downward movement of the jaws before the same are separated for the releasing of the rivet the jaws may be yieldinglj7 supported by means of a spring or springs, preferably as shown in Figs. 1 and 5, wherein a spring G is provided with a coiled portion G' and projecting end G2, adapted to be secured to the frame A, while the opposite end G2 of the spring G is pivotally connected to the collarF by means of pivot-pins G3 upon each side of the collar. By this means the collar will be moved downward by the pressure of the plunger exerted upon the head of the rivet and uprights and centers the same until the shank of the rivet comes in contact with the material. The increased pressure then separates the jaws of the holder and permits the shank of the rivet to pass through the material and be released from the jaws when the continued pressure upon the rivet expands the shank of the same upon the post E, thus heading the same upon the opposite face of the material operated upon.

In Fig. 3 Ihave illustrated a modified structure for supporting a collar F', which consists of a sleeve H, secured to the collar and extending upward into a recess H', formed in the head of the frame A. Surrounding this collar is a retracting-spring H2, which rests upon the base of the recess at its lower end and at its upper end bears againstatension and guiding nut H3. It will be understood in each instance that the plunger D is properly elevated by any suitable form of spring-for instance, a spring D2-bearing against a head D3, carried by the plunger,

and seated in the recess D4, formed in the frame A.

In passing rivets through material where greater pressure is required than can be ordinarily exerted by the hand upon the lever O it has been found desirable to provide a simple and readily-attached foot-power mechanism, and for this purpose I have devised a structure embodying a foot-lever I, pivoted at I to any suitable support and normally elevated by means of a tension-spring I2 or other suitable spring extending from said lever to a fixed support. Extending upward from the lever is a link I3, to which there is pivoted at I4 parallel arms I5, extending upon opposite sides of the machine and pivotally connected at their upper ends IG to lugs C2, extending outward at opposite sides of the handle C. This structure of foot-power mechanism can be readily applied to the hand-machine whenever desired and detached therefrom by simply disconnecting the arms I5 from the lugs C2, and the pivotal connection at I4 permits the parts to be folded in a small and convenient space for the purpose of packing and transportation. It will be seen that pressure upon the lever I will depress the cam-lever (l, thus effecting the riveting operation, while the spring I2 will return the parts to an elevated position. I

The operation of the rivet-holding mechanisms and the foot-power device will be apparent from the foregoing description, and it is also obvious that While the rivet-holding devices are adapted for coperation with each other, thus producing a machine adapted to operate with the rivet-shank upward ordownward, still either of these devices might be omitted and the remaining one used alone. It will be seen, further, that the post E can be used either to support the head of the rivet or to upset the shank thereof when it is passed through the material and that the plunger D will operate to upset the extending shank of the rivet whose head is su pported upon the post E,while the arms F3 of the jaws will rest upon the upper surface of the material operated upon, thus holding the same Iirm While the rivet passes through the material. When the jaws are used to support a rivet with its shank downward, it will be seen that the sleeve E2 will rest upon the under surface of the material, thus always holding the same during the riveting operation.

It is obvious that changes may be made in the details of construction and conguration without departing from the spirit of the invention as defined by the appended claims.

What is claimed isl. A rivet-holding pocket comprising a recessed block,asupportingpost secured within said block and recess and having a head at its upper end, a sleeve surrounding said head IOO IIO

gage beneath said head, a spring surrounding said post between said sleeve-flange and l5 block, an extension carried by the sleeve below said flange and adapted to contact with said block in the downward movement of the sleeve; substantially as specified.

In testimony whereof I affix my signature 2o in presence of two witnesses.

HENRY C. POMEROY.

Witnesses: Y

FRED H. SMITH, E. FLORENCE SMITH.

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