US50755A - Apparatus for bending and punching the frames of draw-heads for railroad-cars - Google Patents

Description

A P. L. WEIMER. Apparatus for Bending and Punching the Frames of Drawheads for Railway Cars. No. 50,755. Patented Oct. 31, 1865.

UNITED STATES PATENT OF ICE.

PETER L. WEIMEB, OF LEBANON, PENNSYLVANIA.

APPARATUS FOR BENDING AND PUNCHING THE FRAMES 0F DRAW-HEADS FOR RAILROAD-CARS.

Specification forming part of Letters Patent No. 50,755, dated October 31, 1865.

To all whom it may concern:

Be it known that I PETER L. WEIMER, of Lebanon, in the county of Lebanon and State of Pennsylvania, have invented a new Machine for Bending and Punching Metal to Form the Draw-Head Frames for Railroad-Oars; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the accompanying drawings, making a part of this specification, in which- Figure lis a perspective view of the machine, showing clearly that end upon which the ends of the bars are punched and bent. Fig. 2 is a perspective view, showing clearly the wedge which is used for confining the bars upon the machine While bending them. Fig. 3 is a perspective view of the machine, showing clearly that end upon which the bars are punched at the middle of their length. Fig. 4 is a longitudinal section through the machine, taken in a vertical plane. Figs. 5, 6, and 7 are views showing the perforated bar, the bent bar, and the frame.

Similar letters of reference indicate corresponding parts in the several figures.

This invention consists in a machine for makingthe frames of draw-heads preparatory to applying the pins and heads to the same, said machine beingconstructed with die-beds and perforated holders, and also provided with means for punching and bending the bars into the required form to receive the pins and heads upon the finishing-machine, which shall form the subject of another application for a patent.

To enable others skilled in the art to understand rny invention, l will describe its construction and operation.

Arepresents a standard, which is constructed with projections B G, that form punchingbeds, as will be hereinafter described, and also with vertical or flat sides for the purpose of allowing the bars shown in Fig. 5 to be bent as represented in Fig. 6.

Between the punching-beds B O is an elevation, D, which has a square hole longitudinally through it for receiving a key, E, Fig. 1, which is used to confine the bar, Fig.

5, down upon the horizontal bed F, previouslyv to bending this bar into the form shown in Fig. 6. The surface of the bed F is depressed below the surface upon which the key-wedge E bears, for the purpose of affording side guides or abutments for the bar in adjusting and securin g it upon the machine, as above described.

The punching-bed B has a flat or horizontal surface, which-is formed by means of a perforated die-plate, a, that is fitted into a recess in said bed, and held securely therein by means of a plate, 11, on the removal of which the dieplate can also be removed and another substituted in its stead.

Gris a hinged lever, havingtwo holes through it of different sizes, which correspond in their diameter and distance apart with the diameter and distanceapartof the holes through theends of the bar, as shown in Fig. 5. The lever G is pivoted in a recess, 0, so that when it is brought down it willassume the position shown in Figs. 3 and 4t and hold the end of the bar to be punched firmly in position. The principle object of the lever G is to afford guides for the punches which are used for punching the bar. These punches are made of a tapering form, as shown in Fig. 4, for the purpose of dropping freely through the die-bed as soon as the bar is punched through.

The punching-bed O is constructed similarly to the bed B, with the exception that but one hole is made through the bed 0 and the lever H, to receive a punch which forms the central hole through the frame shown in Fig. 7, after this frame has been bentinto the proper form. The lever H has a transverse slot formed in its bottom surface for receiving and confining the frame of Fig. 7 in place while it is being perforated.

The operation. of making the frames in question is as follows: A fiat bar of the required length and thickness is first heated at the ends and the tenons worked on these ends, as shown in Figs. 5 and 7. A sufficient length of the end of the bar being again heated, the tenon is inserted into the recess 0 and the guide-lever brought down, so as to confine the bar in place upon the bed B, after which it is punched. When both ends of the bar are punched the bar is heated at about the center of its length and placed on the bed F. The large key E, Fig. 2, is then driven over it, and both ends of the bar are hammered down on the vertical sides of the standard A. By the time this operation is performed the frame, Fig. 6, is too cold to be punched. It is heated again and placed upon the punch-bed O, and the large hole n punched through it, as shown in Fig. 7.

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

1. The improved apparatus or machine, substantially as herein described, for the purpose set forth.

2. The perforated lever G, in combination with the punchin g-bed B and the recess 0, substantially as described.

3. The bending-bed F, in combination with the key-post D and key E, substantially as described.

4. The combination of punching-bed G and transversely-slotted and vertically-perforated lever H, substantially as described.

P. L. WEIMER.

Witnesses:

D. M. KARMANY, R. T. CAM'PBELL.

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