US820937A - Metal-working device. - Google Patents

Description

PATENTED MAY 15, 1906.

R. OHEARN. METAL WORKING DEVICE.

APPLIGATION FILED MAR. 16, 1905.

2 SHBETS-SHBET 1.

No. 820,937. PATBNTED MAY 15, 1906.

R. OHBARN METAL WORKING DEVIGE.

APPLIOATIUN FILED MAR.16, 1905.

2 SHEETS-SHEET 2.

UNITED s'rn r ns RICHARD OHEARN, OF MONTEREY, KENTUCKY.

METAL-WORKING DEVICE Specification of Letters Patent.

ratented May 15, 1906.

Application filed March 16. 1905. Serial No. 250,4;04.

To all whom it may concern.-

Be it known that I, RICHARD OHEARN, a

citizen of the United States, residing at Monterey, in the county of Gwen and State of Kentucky, have invented certain new and useful Improvements in Metal-Working Devices, of which the following is a spec fication.

' My invention pertains to metal-working devices; and it consists in the peculiar device hereinafter described and claimed, designed more especially for cutting off the heads of and displacing the rivets employed to connect auxiliary carriage-top bows to a main bow and replacing the said rivets with new rivets.

In the accompanying drawings, forming part of this specification, Figure l is a side elevation of the device constituting the present and preferred embodiment of my invention. Fig. 2 is a transverse section taken in the plane indicated by the line 2 2 of Fig. 1. Fig. 3 is a perspective view of the rectilinearly-movable punch of the device removed from the body thereof. Fig. 4 is a perspective view of the anvil removed. Figs. 5 and 6 are views of a punch and an anvil designed to be substituted for those shown in Figs. 1 to 4 when the device is to be used to displace a rivet, and Figs. 7 and 8 are views of a punch and an anvil which I contemplate employing in lieu of those mentioned when a new rivet is to be headed.

Referring by letter to the said drawings, and more particularly to Figs. 1 to 4 thereof, A is the body of the device, which is preferably though not essentially of cast-iron and of a size to be conveniently grasped and securely held in one hand. The said body is bifurcated at a and is provided in its portion 1) at one side of the bifurcation with a bore 0 and in its portion (1 at the opposite side of the bifurcation with a bore a, alined with the bore 0. It is also provided in the wall of the bore 6 with a threaded aperture f, which receives a screw 13, Figs. 1 and 2, designed to serve a purpose presently set forth.

0 is a punch of cold steel or other suitable hard metal disposed and movable rectilinearly in the bore e of body A. The said punch is provided in its side at an intermediate point of its length with a recess g, designed to receive the inner end of the screw B, and is also provided with an inner chisel-point h, disposed off its longitudinal center for a reason which will presently be made apparent.

The screw B, in conjunction with the recess 9, serves to retain the punch C in the body A while permitting free rectilinear movement of said punch in the body.

D is a solid anvil, preferably of soft steel, arranged on the Wall of the bifurcation a opposite the inner end of the punch C and having a stem m removably seated in the bore 0.

My novel device, as shown in Fig. 1, is designed to be used to cut off the heads of old rivets precedent to the displacement of the same from the auxiliary bows and the main bow of a carriage-top, and the manner of its use is as follows-viz., the workman holds the body A in his left hand, with the upper side of the anvil D below and against the perimeter of the rivet-head to be removed, and strikes the upper end of the punch (I one or more sharp blows with a hammer. When this is done, the head of the rivet will obviously be quickly removed, and this with but a minimum amount of effort on the part of the workman.

When the device is to be used to displace a rivet after the head is removed from the rivet, the punch C and the anvil D, Figs. 5 and 6, are used in the body A in lieu of the punch C and the anvil D, respectively. The anvil D is of hard steel or other hard metal and is provided with a bore p, and hence it will be seen that when the device is held in proper position relative to the rivet to be displaced and the outer end of the punch C is struck a sharp blow the said punch will operate to force the rivet out of the bows and through the bore p of anvil D.

The punch C and anvil D of Figs. 7 and 8 are designed to be used in lieu of those previously described when a rivet properly placed in the bows is to be riveted. In using the device for the last-mentioned purpose the body A is held with the anvil D against one end of the rivet, and the outer end of the punch C is struck one or more blows until the opposite end of the rivet is properly headed or upset.

While I prefer to use the punches and anvils described interchangeably in the body A, I desire it understood that each punch and its complementary anvil may have a body of their own without involving departure from the scope of my invention, in which event it obviously will not be necessary for the punch and the anvil to be removable.

It will be gathered from the foregoing that with the aid of my novel device the rivets used to connect the bows of carriage-tops may be expeditiously and easily removed and replaced with new rivets. I do not desire, however, to be understood as limiting the device to such use, as it may obviously be used to advantage in other connections.

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

A device for the purpose described, comprising a body, of a shape and size to be held in one hand, having a bifurcation in one of its edges, a longitudinal bore in one wall of the bifurcation and a longitudinal bore in the other wall thereof, an anvil removably ar- I 5 ranged in the latter bore, and a rectilinearlymovable punch arranged and retained against casual displacement in the first-mentioned bore of the body and having a chisel-point h arranged at its inner end and off its longitudinal center, for the purpose set forth.

In testimony whereof I afiix my signature in presence of two witnesses.

RICHARD OHEARN.

I/Vitnesses:

O. B. NIcHoLs, W. H. JOHNSON.

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