US448419A - Half to martin a - Google Patents

Description

(No Model.)

W. H. ELMOND.

RAIL BRAKE.

No. 448,419. Patented Mar. 17, 1891.

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UNITED STATES PATENTV OFFICE.

IVIIJLIAM HENRY ELMOND, OF KANSAS CITY, MISSOURI, ASSIGNOR OF ONE- HAIIF TO MARTIN A. PENINGTON, OF SAME PLACE.

RAIL-BRAKE.

SPECIFICATION forming part of Letters Patent No. 448,419, dated March 1'7, 1891. Application iled December 9, 1890. Serial No. 374,008. No model.)

To @ZZ whom t may concern,.-

Be it known that I, WILLIAM HENRY EL- MOND, a citizen of the United St-ates, residing at Kansas City, in the county of Jackson and 5 State of Missouri, have invented certain new and useful Improvements in Rail-Brakes; and

I do hereby declare the following to be a full,

clear, and exact description of the invention,

such as will enable others skilled in the art 1o to which it appertaius to make and use the same.

My invention relates to improvements in rail-brakes adapted for use on cable and other cars; and the primary object of the invention is to provide a brakethe sole of which is detachably secured within and connected to the brake-shoe, so as to permit of its ready removal and replacement by another sole when desirable. y

A further object of the invention is toprovide a brake the sole of which can be adjusted vertically with relation to the brakeshoe in order to compensate for wear on the contact-face of the sole.

A further object of the invention is to provide a clamp or locking device for securing the sole in position in the brake-shoe, which can be easily operated without the aid of any tool to release the sole when desired.

A still further object of the invention is t0 provide a rail-brake which shall be cheaper of manufacture, as eflicient in operation, and much simpler in construction than any device of this kind known to me and at present -in use.

With these and other ends in view my invention resides in the combination of an angular brake-shoe adapted to partially surround a wooden sole and provided near either end with an upwardly-extending lug, a clamping or locking plate connected to the outer face of each of vsaid lugs, and an operating lever fulcrumed or pivoted :in each of said lugs and operating between the outer face of the lug/and the inner face of the upper portion ofthe clamping or locking plate to force the lower edge of said plate tightly against the outer face of the sole of the brake and hold it securely in position within the brakeshoe.

My invention further resides in the peculiar construction and arrangement of parts, as

.will be hereinafter more fullydescribed and claimed. l

In order that others may understand my invention, I have illustrated the same in the accompanying drawings, in which- Figure I is a perspective view of a brakeshoe detached from the car constructed in accordance with my invention. Fig. II is a 6o transverse sectional view on the line :r a: of Fig. I. Fig. III is a side elevation showing the manner of compensating for wear on the contact-face of the sole Y of the brake; and Fig. IV is a side elevation showing the parts in positionto allow of the removal of the sole of the brakeshoe.

Like letters of reference denote correspond ing parts in all the figures of the drawings, refcrring to which- Y A designates the brake-shoe, of iron or any other suitable material, substantially rightangular in cross-section, and the shoe partially incloses the brake-sole B, which preferably consists of a block of wood, which material has by practice beenproved the most effective material for this purpose. Thebrakeshoe A has each end partially closed by a piece C, made integral with the shoe, and these end pieces C serve to prevent endwise So movement of the sole B within the shoe when the saine 'is forced into contact with the rail to stop the motion ot' the car; and the shoe A is further provided on its upper side near either end thereof with an upwardly-extending lug D, one face of the lug D being iiush with the outer face of the top of the shoe A.

Through the lugD passes a short bolt E, and on this bolt is litted a clamping or locking plate F, made of any suitable material and extending from a point some distance above the bolt E to a point about on line with the lower edge of the rear and end pieces of the brake-shoe A. The plate F is held on the bolt E by means of a nut G, and the lower edge of said plate is bent inwardly to form a tooth or biting-edge II, which is adapted to take or be forced into the outer face of the sole B for the purpose of holding the same in position in the brake-shoe. In the outer face of the IOO lug D, near the inner end thereof, is pivoted a wedge-like lever K, which operates between the outer face of the lug D and the inner face of the clamp or plate F, said plate having its upper end grooved or recessed in order to form a socket L for the reception of the lever K. The lever K is of such proportions and shape that when it is in position between the lug and the plate, as shown in Figs. I and III, it operates to force the upper end of the plate F outward a slight distance, and as said plate is prevented from rearward movement on'tho bolt E by the nut G this outward movement of the upper end causes the lower end of the clamping-plate to be moved inward toward the outer face of the brake-sole and thus force the tooth or biting-edge l'I firmly therein.

In Fig. IV of the drawingslhave illustrated means for compensating for the wear on the lower or contact face of the brake-sole B, which very desirable end I accomplish in the following manner: When the lower or contact face of the brake-sole has become worn, so as to avoid contact with the rail when the brake-shoe is depressed,thelever K is raised, which relieves the pressure on the upper end of the plate F, and the biting-edge H can be withdrawn from the face of the brake-sole by slightly pressing on the plate. The brakesole is then lowered the required distance and a iller or strip of wood M of the necessary thickness is forced or wedged between the upper surface of the brake-sole and the inner surface of the brake-shoe to completely ll the space formed by lowering the brakesole. lhe lever K is then depressed again and the lower biting-edge of the clampingplate forced into the brake-sole. It is obvious that the brake-sole can be lowered from time to time as it becomes necessary, so long as the upper edge of the brake-sole remains above the line of the biting-edge of the clamp F and the lower edge of the rear and end pieces of the brake-shoe. W'hen the brakesole becomes worn to such an extent that it is impossible to lower it, in the manner just described, sufficiently to make it effective, or for any other reason it is desired-to replace the old sole with a new one, the lever K is raised and the plate F turned on the bolt E into the position shown4 in Fig. IV, when the new sole can be readily tted into the brake-shoe and locked therein in the manner hereinbefore described.

The operation and advantages of my invention will be readily understood and appreciated by those skilled in the art to which it relates 'from the foregoing description, taken iu connection with the accompanying drawings. t

No means for attaching .the brake-shoe to the body or frame of a car is here shown and described, as the same forms no part of my invention. Any of the common forms of connections now in use maybe used in connection with my improved brake-shoe.

I am aware that changes in the form and proportion of parts and details of construction can be made withoutdeparting from the spirit or sacrificing the advantages of my invention, and I therefore reserve the right to make such changes as fairly fall within the scope of my invention.

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

l. In a rail-brake, the combination, with a brake-shoe and a brake-sole, of the lockingplates, and the wedging-levers operating between thc brake-shoe and the locking-plates, substantially as described, for the purpose specified.

2. In a rail-brake, the combination of a brake-shoe provided with the lugs, a brakesole, and the locking-plates connected to the lugs and engaging the brake-sole, substantiall,Vv as shown and described.

3. In a rail-brake, the combination of a brake-shoe provided with the lugs, the brakesole, the locking-plates detachably secured to the lugs and contacting at one end with the brake-sole, and the wedging-lever pivoted in the lug and operating between the lug and the clamping-plate, all combined and arranged as and for the purpose described.

et. In a rail-brake, the combination of a brake-shoe, the brake-sole tted in the brakeshoe, the connecting-plates intermediate of the brake-shoe and the brake-sole and provided at one end with the tooth or biting-edge and at the other with a socket, and the wedginglevers pivoted on the brake-shoe and operating between the shoe and the plates, substantially as shown and described, for the purpose specified.

5. In a rail-brake,'the combination, with an angular brake-shoe Vprovided with the end pieces and the upwardly-extending lugs, of a brake-sole fitted within the brake-shoe, the

bolts E, passing through the lugs of the brakeshoe, the locking-plates detachably fitted on said bolts and each provided at one end with the inwardly-extending biting-edge and at the other end with the socket L, and the wedging-levers pivoted in the lugs ofthe brakeshoe and operating between such lugs and the locking-plates, as and for the purpose specified, substantially 'as shown and described.

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

VILLIAM HENRY ELHON D.

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