US777944A - Car part and method of making same. - Google Patents

Description

PATENTED DEC. 20, 1904.

v E. I. DODDS. v v GAR PART AND METHOD OF MAKING SAME.

APPLICATION FILED FEB. 23. 1904.

N0 MODEL.

INVENTOR WITN UNITED STATES Patented December 20, 1904.

PATENT OFFICE.

ETHAN I. DODDS, OF AVALON, PENNSYLVANIA, ASSIGNOR TO PRESSED STEEL OAR COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORA- TION OF NEII JERSEY.

CAR PART AND METHOD OF MAKING SAME.

SPECIFICATION forming part of Letters Patent No. 777,944, dated December 20, 1904. Application filed February 23, 1904. Serial No. 194,644.

To all whom it may concern:

Be it known that I, ETHAN I. Doom, 2. resident of Avalon, Allegheny county, Pennsylvania, have invented a new and useful Car Part and Method of Making the Same, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

v The drawings show the application of my invention to the manufacture of bolsters.

Figure 1 shows the blank from which the bolster is made. Fig. 2 is a diagrammatic end elevation illustrating the method of making the bolster from the blank of Fig. 1. Fig. 3 shows-the bolster in elevation. Fig. 4 is a similar view showing a modified form of the bolster. Fig. 5 illustrates a double bolster made in accordance with my invention. Figs. 6 and 7 are vertical cross-sections on the line m w and y 3/ of Figs. 4 and 5, respectively. Fig. 8 is an end elevation of the bolster shown in Figs. 3 and i. Fig. 9 is a vertical section illustrating a modification. v

The purpose of my invention is to provide means by which car parts, such as brakebeams and bolsters, can be made cheaply and of great strength with as little waste of metal as possible. It also enables the car parts to be made with the least possible amount of riveting.

In carrying out the invention I cut a flanged beam with a longitudinal slit or cut through the web and press out the metal of the web into bowed or bellied form to impart the required strength and rigidity.

In the drawings I show my invention as applied to the manufacture of bolsters.

The blank 2, which is a channel-beam or an I-beam, is slit longitudinally through the web, with a cut I) b and with transverse cuts Z5 at the ends of the cut 6 7). Then by means of suitable dies the flanges of the blank, which are originally in the position shown by the dotted lines 2 of Fig. 9, are bent into the position shown by the full lines 0 and the web is pressed out, so as to form the two side members (Z (Z with the intervening space 6. This constitutes the bolster, which may then be suitably braced by top and bottom plates 3 4 connecting the side portions. Fig. 3 shows a truck-bolster, and Fig. 4 a body-bolster, made in this way.

The truck-bolster shown in Fig. 5 is constituted by superimposing two bolster members like that shown in Fig. A and fixing them together by tie-plates 5 5. This construction is shown in vertical section in Fig. 7

In Fig. 9 I show a modified construction in which instead of producing a fish-belly bolster, such as shown in Figs. 3 and 4, the dies are so shaped as to press down the web portion cl d abruptly on the cross-cut lines 6 6, thus producing a bolster whose convexity of protuberance is of equal depth from end to end. Such a bolster is suitably reinforced at the ends to compensate for the lessened strength of the bolster as compared with the fish-belly construction of Fig. 3.

Within the scope of my invention as defined in the claims the parts may be modified in many ,ways by the skilled mechanic, since What I claim is 1. The method herein described of making car parts, which consists in slitting a flanged piece with a longitudinal cut through the web, and with cross-cuts, and pressing out the web so cut to form a protuberance or belly on the part; substantially as described.

2; The method herein described of making car parts, which consists in slitting a flanged piece with a longitudinal cut through the web, and with cross-cuts, and pressing out the web so cut to form a flanged protuberance or belly on the part; substantially as described.

3. A car part having in an integral flanged piece a web and a belly or protuberance pressed out from the web divided along its middle and flanged along its opposing edges; substantially as described.

In testimony whereof I have hereunto set my hand February 20, 1904.

ETHAN I. DODDS.

Witnesses:

JOHN MILLER, H. M. (JoRwIN.

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