US1675773A - Rivet holder - Google Patents

Description

July 3, 1928. 1,675,773

J. TISSLER RIVET HOLDER Filed Nov. 29, 1926 2 Sheets-Sheet 1 I l i g l Inventor July 3, 1928.

J. TISSLER RIVET HOLDER 2 Sheets-Sheet 2 Filed Nov. 29, 1926 wwaaaqq w jkrnq Patented July 3, 1928.

UNITE STATES rmwe wear rrrssnna. or

rmmnnnmmrnansrwm;

i mum. EQLDEB. i

mu eum; mdmv wh at. 191 1 S r al ITO-151.6479.

The present invention relates to a rivet hold r, and aims to provide an improved structure for holding a rivet in ariveting machine in suchja manner that the holding means is released when thewrivet spreading means comes into operation.

Another very important object of the 'vention lies in the provision of a movable rivet holder which will release the :rivet when pushed by the spreading device a prede mi amo nt. a

Anothervery important ob'eotof invention lies in the provision oflarivet holder of this character which is simple in its con struction strong and durable, inexpensive to manufacture, not likely to easily become out of order, reliable and efficient, and otherwise well adapted for the purpose for which it is designed.

With the above and numerous other objects in view as will appear as the description proceeds, the invention resides in certain novel features of construction, and in the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawings Figure 1 is a side elevation of the device embodying the features of my invention.

' Figure 2 is a front sectional elevation thereof, and

Figure 3 is a top plan view of the rivet holder per se.

Referring to the drawing in detail it will be seen that the numeral 5 denotes a supporting structure of any suitable formation. A plunger 6 is mounted in the supporting structure 5 for vertical rectilinear movement, being operated in any suitable manner. The lower end of this plunger 6 is reduced as is shown in Figure 3 and this reduced end 7 has its lower end tapered as at 8, and the extremity is concaved as at 9. A skirt 10 is slidable over the reduced end 7 and has longitudinal slots 11 through which cross member 22 to with "the recess 17 having in the bottom thereof a down a dly xte diw Po k 18 formed with an intermediatey disposed shoulder 19. A head 20 is formed with 1:1 depending shank 21 verti ally movable in the .PQ Cket 1 8. A cross member '22is threadedly .engagedpn the threaded portion 23 of the [intermed ate ortion of the shank 21 adjathe hea -20. A spring 24 impinges against the shoulder 19 and :againstthe cross m mb 2 n rmally holdi g thhead 20 in a -raised osition. A cross bar 25,is pro 'ylded at t e base of the head 20 and has upstanding projections 26 with slots 27 therein. L Q ar pi ote on h extremities of the cross member 22 and are pivoted to intermediate portions of fingers 29 which project through the slots 27 and then extend upwardly and then inwardly over the top of the head 20. The other ends of these fingers are directed downwardly and have pins 30 projecting into arcuate slots 31 provided in the side walls of the recess 17. The lower edges of these arcuate slots 31 function as cams. Suitable bufling material 33 is disposed in the bottom of the pocket 18.

When the parts are disposed as in Figure 1, it will be seen that a rivet may be rested on the head 20 andheld in place by the fingers 29. a When the plunger 6 1s forced downwardly, the lower edge of the skirt 10 will first engage with the material and be disposed about the upward projecting end of the rivet, thus guiding the reduced end 7 into engagement with the rivet in proper relation for spreading the extremity of the rivet. As the plunger proceeds downwardly and engages the rivet the head 20 will be forced downwardly, thus contracting the spring 24 and at the same time causing the ull downwardly on the links 28 thereb pul ing downwardly on the fingers 27 an the downwardly and outwardly curved cam slots 31, therefore, will cause the pins 30 to move to the lower ends thereof, thus causing the releasing positions of the fingers 29 to occur, at which time the shank 21 will have engaged the proper material 33 and stopped so that the end of the rivet is flattened or spread as desirable.

It is thought that the construction, opera-' tion and advantages of this invention will 'now be apparent to those skilled in this art without a more detailed description thereof. The present embodiment of the invention has been disclosed in detail merely by way of 'ficing any of its advantages.

Having thus described the invention, what a I claim as new and desire to secure by Letters Patent is I 1. A device of the class described, including a supporting structure having a recess and a pocket in the recess, a shank movable in the pocket, a head on the shank in the recess, a cross member adjustable on the shank, links pivoted to the cross member, fingers pivoted intermediate their ends to the links; the side walls of the recess being provided with slot-s, said fingers having pins extending into the slots, a spring means normally urging the shank upwardly and the top of the head, said to direct the fingers away froxn-the head the fingers in a position to engage the rivet on the top of the head, said slots being curved to direct the fingers away from the head when the head is moved downwardly.

2. A device of the class described, in-

cluding a supporting structure having a rep cess and a pocket in the recess, a shank movable in the pocket, a head on the shank in the recess, a cross member adjustable on the shank, links pivoted to the' cross member, lingers pivoted intermediate their ends to the links, the side walls of the recess being provided with slots, said fingers having pins extending into the slots, a spring means normally urging the shank upwardly and the fingers in a position to en ge the rivet on fits being curved when the head is moved downwardly, and rivet spreading means for pushing said head downwardly. I

In testimonywhereofI afiix mysignature.

J OSEF TISSLER.

Images