US671117A - Car-brake. - Google Patents

Description

No. 67|.||.7. Patented Apr. 2, |961.

` E. e.' mcEwANvEn.

CAR BRAKE.

(Appiieazio med July 25, 1900.

(N o M o del IN VEN TDR EDVVIN G. NICEWANER, OE .IOI-INSTOWN, PENNSYLVANIA, ASSIGNOR TO TI-IE LORAIN STEEL COMPANY, OF PENNSYLVANIA.

CAR-BRAKE.

SPECIFICATION forming part of Letters 1-"atent No. 671,117, dated April 2, 1901. Application led July 25, 1900. Serial No. 24,786. (No model.)

To all wlw-nt t may concern:

Be it known that I, EDWIN G. NIOEWANER, of Johnstown, in the county of Cambria and State of Pennsylvania, have invented a new 5 and useful Improvement in Car-Brakes, of which the following is afull, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specification.

ro My invention has relation to car-brakes,

and more particularly to that class of carbrakes known as track-brakes, because of the fact that the brake-shoes are arranged to engage the track-rails in braking instead of t5 the car-ndieels.

My invention is designed to provide a simple and efficient brake of this type which can be readily applied to different types of carrueks; and it consists in the novel construczo tion and combination of parts, all as hereinafter described, and pointed out in the appended claims, reference being had to the accompanyin g drawings.

In the drawings, Figure l is a plan view of a portion of a car-truck equipped with my imthe axles, and C the side frames, of a truck.

D designates the brake-shoes, which are preferably of considerable length. and which may he provided with any suitable or ap- 3 5 proved braking-surfaces d.

E represents suitable castings,which are designed to be bolted, riveted, or otherwise rigidly secured to the truck-frame. In the particular truck shown these castings form the supports for the brake-shoes and their operating devices and are secured to the inner sides of the truck-frames; but it is obvious that the form of the supports may be changed to suit the particular truck in hand and that they may be secured to a cross member or other suitable part of the truck-frame.

E is a rock-shaft which extends transversely across the central portion of the truck and is provided at its ends with bearings fin the castings E. Said shaft at each end portion has a projecting arm F', to Whose The letter A designates the car-wheels, B.

free end portion is pivotally connected a short vertical rod G, and to the lower end of this rod are connected two short diverging links I-I, which are in turn connected to the adjacent ends of the longer arms of oppositely-extending levers K. These levers are respectively fulcro med in depending arms E of the castings E, and to their shorter arms are connected short links L, which are in turn 6o connected to the respective end portions of the brake-shoe. Coiled about the rod G is a helical spring M, whose upper end bears against a web or flange e on the casting E and whose lower end seats against a iange or collar g on the rod G.

It will be readily seen that if the shaft F be actuated to raise the arms F the longer arms of the levers K will also be raised, thereby depressing their shorter arms and forcing 7o the brake-shoes down into engagement With the track rails. The springs M are compressed by this operation and act to return the shoes to their normal positions as soon as braking` pressure is released. I have shown the sh aft E as having a lever-arm F2, to which is connected a brake-rod P, which is connected to the usual brake-staff of brake-lever (not shown) on the car-platform.

Since slight modifications within the scope 8o of the mechanic may be readily made in adapting the above-described brake to diierent types of trucks, I do not wish to limit myself to the exact construction and combination of parts which I have herein shown and described.

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

1. In a car-brake, the combination of a 9o brake-shoe adapted for braking engagement with a track-rail, a pair of oppositely-eXt-ending levers horizontally pivoted to fixed supports intermediate their ends and connected to the respective end portions of the said shoe, a vertically-reciprocating member attached to the adjacent arms of said levers,and means for actuating the said member.

2. In a car-brake, the combination of a brake-shoe adapted for braking engagement roo with a track-rail, a pair of oppositely-extending levers horizontally pivoted to fixed supports intermediate their ends and connected to the respective end portionsof said shoe, a vertically-movable rodloosely connected to the adjacent arms of said levers, and means for actuating the said rod. 3. In a car-brake, the combination of a brake-shoe, adapted for braking engagement with a track-rail, and a pair of oppositely-extending horizontally-pivoted levers having shortarms loosely connected to the respective end portions of said shoe, and long arms loosely connected to devices for operating said levers. v

4:. In a car-brake, the combination of a brake-shoe, adapted for braking engagement with a track-rail, a pair of horiZontally-pivoted levers, a vertically-movable actuatingrod, link connections between the said rod and the adjacent arms of said levers, and link connections between the opposite arms of said levers and the respective end portions of the brake-shoe.

5.- In a car-brake, the combination of a brake-shoe, adapted for braking engagement with a track-rail, a pair of horizontally-pivoted levers, link connections between the outer and shorter arms of said levers and the respective end portions of the brake-shoe, a vertically-movable actnatingfrod link-connected to the inner and longer arm of each of said levers, a spring acting upon said rod in one direction, and a rocker-arm and actuating means therefor for moving said rod in opposition to the said spring.

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

E. G. NICEWANER. Vitnesses:

BLANCHE M. SMITH, H. W. SMITH.

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