US729924A

US729924A - Brake-beam.

Info

Publication number: US729924A
Application number: US8914502A
Authority: US
Inventors: Harry W Frost
Original assignee: Chicago Railway Equipment Co
Current assignee: Chicago Railway Equipment Co
Priority date: 1902-01-10
Filing date: 1902-01-10
Publication date: 1903-06-02
Anticipated expiration: 1920-06-02

Description

NO. 729,924. -PATENTED JUNE 2, 1903. H. W. FROST. l

BRAKE BEAM. APPLIoATI'oN nu JAN. 1o. 1902.

Patented J' une 2, 1903. I

Fries.

ArtNr HARRY W. FROST, OF' DETROIT, MICHIGAN, ASSIGNOR TO CHICAGO RAIL- WAY EQUIPMENT COMPANY, OF ILLINOIS.

OF CHICAGO, ILLINOIS, A CORPORATION BRAKE-BEAM.

SPECIFICATION forming part of Letters Patent'No. 729,924, dated June 2, 1903. Application tiled January 10, 1902. Serial No. 89,145. (No model.)

To @ZZ whom. t may concern:

Be it known that I, HARRY W. Fnosr, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigamhave invented certa-in new and useful Improvements in Brake-Beams, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to an improvement in beams and the process for` making the same, especially intended for railway bracebeams, but which may be adapted for other uses; and it consists particularly in such a beam having reduced ends, such reduced ends being formed by cutting elongated notches or slots therein and then closing the slot, thereby reducing the Width of the beam an amount equal to the width ,of the notch or slot, all as more fully hereinafter described,

and particularly pointed out in the claims.

In the drawings, Figure l is a plan view of my beam, showing itfitted for use as a brakebeam. Fig. 2 is a plan view of the end of the beam, showing the notch or slot formed therein. Fig. 3 is a similar plan showing the slot closed and the end thereby reduced. Fig. 4 is a plan similar to Fig. 3, showing the brake-head applied thereto. Fig. 5 is an end elevation of Fig. 4. Fig. 6 is a similar elevation of a slightly-modified form of beam.

A represents a straight solid beam, which in this instance in Figs. l to 5 I show provided with the ilangesB B at opposite edges,

forming what is commonly known as an I-A 4o tail of the cross-section of the beam is imthe inclined side b at the inner end making a slot, the main portion of which is aparallelogram and the end portion of which is tapering, as clearly shown. The beam with the ends thus notched or slotted is then subjected to pressure through any suitable dies or by rolling or other meansso as to close this notch or slot by abutting the two sides thereof and leaving simply a joint c at the point of closure. It will be observed that this slot is formed close to the liange B', so that when the beam is reduced by the closing of the slot the joint will be in close proximity to the said flange.v The effect of this operation is to make a beam having its central portion or web of uniform width and its ends of reduced Width, the thickness of the material in the web being unchanged and undeflected. The beam having these reduced ends may be used for various purposes-such, for instance, as brake-beams-and in that case I apply to the reduced end portion of the beam brake-heads E, apertured to lit the ends thereof and embrace the flange l5', extending across the joint c and overlapping the web, as plainly shown in Figs. 5 and 6.

The brakehead may be secured to the beam by suitable means, such as a rivet or rivets F,passing through the web beyond the joint, so that the fact that the beam is slit will not affect materially its strength.

It will be seen that by making the slot with the straight side a and the inclined side b and then closing the bifurcation or notch the web will be formed with the inclined pore tions G at the point where the inclined side Z9 is formed and that the ends'will be straight, but reduced in width through the portion let tered I'I in Fig. 3. V

What I claim as my invention is 1. A railway brake-beam having marginal anges and a central web, the web being con tinuous from end to end and of uniform thickness having the tapering portion G and the shape of the other side, substantially as the reduced straight portion H. described. ro

2. Abrake-beam having longitudinal mar- In testimony whereof I affix my signature ginal flanges, a connecting-Web, and reduced in presence of two witnesses. 5 ends formed by cutting notches D, the main HARRY W. FROST.

portion of each of which is a parallelogram Witnesses: having its end portion tapered, and having M. B. ODOGHERTY,

the tongue with the straight side pressed into H. C. SMITH.