US1130231A - Brake-shoe. - Google Patents

Description

G. N. WINTER.

BRAKE SHOE. APPLIOATION FILED NOV.18,1914- Patented Mar. 2, 191 5.

mung/11ml? UNITED STATES PATENT" OFFICE.

CHARLES N. WINTER, 0F MAHWAH, NEW JERSEY, ASSIGNOR T0 AMERICAN BRAKE JERSEY.

BRAKE-SHOE.

Patented Mar. 2, 1915.

Application filed November 18, 1914. Serial No. 872,685.

a citizen of the United States, and a resident of Mahwah, in the county of Bergen and State of New Jersey, have made and invent ed certain new and useful Improvements 1n Brake-Shoes, of which the following 1s a specification.

My invention relates to an lmprovement in brake shoes and more particularly to such as are usually termed open flange shoes for use upon the driving wheel of locomotives,

although, as will be hereinafter seen, the in-- vention is applicable to open flange shoes such as are used on car wheels.

The difficulty heretofore experienced in the production of open flange shoes is the liability of the shoe cracking or break ng at about the center of the length, this being due to the fact that the formation of an opening in the steel back at about the center of its length and recessing or noteh ng one edge of the back opposite said opening for the reception of the vertical sides of the attaching or key lug, leaves but a small amount of stock or metal at the center of I the back, and particularly between the opening and the partially flanged edge of the plate.

The object of my invention 1s to so construct the shoe that this objection will be overcome, this result being effected by employing a continuous rib on the partially flanged edge of the back and outside ofthe body metal, this rib or flange resting against the sand in the mold during the pouring of the molten body metal and thus avoiding the danger of burning the same.

In order to better understand the invention, reference may be had to the accompanying drawings, in which Figure 1 is a perspective new of a back detached from the body of the shoe. Fig. 2 is a top plan view of a brake shoe constructed in accordance with my invention. Fig. 3 is a sectional view taken on the line 33 of Fig. 2. Fig. 4 is a view in perspective of a modified form of the back, and Fig. 5 is a cross-sectional view of ashoe cmploying a back like that illustrated in Fig. 4.

Referring to the drawings, 6 represents the body of a shoe, preferably formed of cast iron and having at or adjacent to the back thereof a reinforcing plate 7 provided at its ends with the flanges 8 extending over the flange 9 of the shoe. At about the center of the length of this back 7 is formed an opening 10, the'unflanged edge thereof being notched or recessed as shown at 11, said opening 10 and recess 11. allowing the vertical sides 12 of the attaching or key lug 13 to pass through the same, and the extreme ends of said lug to be bent and anchored thereunder. Along that edge of the back the ends'of which are formed with the flanges 8, is provided a continuousrib SHOE & FOUNDRY COMPANY, OF MAHWAH, NEW JERSEY, A CORPORATION OF NEW or wall 14 the ends'of the same merging j into the flanges, said wall or rib 14 being bent upwardly at substantially right angles to the plate 7, the top edge of said wall or rib being straight as illustrated in Fig. 1, or, as illustrated in Fig. 4, is made somewhat higher at its center 15, this flange or rib l6 gradually increasing in height from its ends, where it merges into the flanges 17 toward the center 15, thus lending to the plate the greatest strength at the weakest point of the latter. shoe the metal which flows up through the opening 10 and forms the reinforcement 18 of the wrought metal lug 13, as well as the remaining portions of the body metal which flow up, through and over the top of the plate, contacts with one side of the rib or plate 14, the opposite sides of this plate resting against the sand of themold in which the shoe is cast, thus avoiding the burning of the same, as is likely to be the case where the wrought or steel metal is entirely submerged in the molten metal when the shoe is being cast. I have learned upon experiment that a shoe formed in this way is much stronger than when formed as ordinarily, there being no tendency of the same to break or crack while in service, the steel back or reinforcing plate being materially strengthened at that point where the metal is likely to be burned or crystallized, the strengthening wall being so placed or located as to avoid any danger or injury thereto from the casting operations.

What I claim is:-

1. A brake shoe, having at or adjacent to the back of the body a reinforcing plate Flanges, and extending above said body.

2. 1-e1nfor .:1ng back for a brake shoe In the formation of theconsisting of a plate formed with a central opening and with a recess for the attachment of .a key lug, one edge of said plate being flanged near its ends, and a continuous wall connecting said flanges and bent 11pwlardly at substantially right angles to said p ate.

Signed at Mahwah, in the county of Bergen and State of New Jersey, this 16th day of November, A. D. 1914.

CHARLES N. WINTER.

\Vitnesses: v

CHESTER I). J ONES, RUSSELL YOUNG.

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