US815768A - Car-brake. - Google Patents

Description

l PATBNTED MAR. 20, 1906. v W. S. WASHBURNL E. S. NILES.

CAR BRAKE. APPLICATION FILED 11111.16, 1905.

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1'* IHIIIIIIIIIIIIINI IIIIIIIIIIIIIIIIIlllllmmn UNITED STATES PATENT `oEEIoE- WILLIAM S. wASHBUEuZoF BRocKToN, ANDEDWARD; S. NIL'ES, or

' BOSTON, MASSACHUSETTS.

y --oAR-BRA'KE'.

Specification of- Letters Patent. PatentedrMarch 20, 1906.* Applicata@ mea January 16,1905.- serin' No. 241,249.

To @ZZ-'whomit may concern:

Be it known that we, WILLIAM S. WASH- BURN, a resident of Brockton, county of Plymouth, and EDWARD S. NILEs,a resident of Boston, county of Suolk, State of 'Massachusetts, citizens ofthe United States, have -1 inventedan Improvementin Car-Brakes, of

Ioy

which .the following description, in connection'l with the accompanying drawings, is a specification, like vnumerals `on the drawings representing like parts.

This invention relates to car-brakesof that class in which the brake-is suspended from or Y l, supported by a, brake-supporting lever which is fulcrumed on the aXle-boXor car-axle.

In `Patent No. 758,177, vdated Aprilv 26,

1 904', a car-brake is shown in which the brakesupporting lever is fulcrumed on the axle-box and carries4 at it'souter end the brake and has its inner end secured` to the `truck-frame in some Suitable way. In this device, however, only one brake is usedfor each car-" wheel. p. l l

' Inksome types of car-trucks it is' customary to have .two brakes for each car-wheel;

and the object of the present invention is to provide the brake-supporting lever of a carbrake, such as shown in said patent or application, with means for supporting two brakes one operating on each side of the wheel.

' In the accompanying drawings, Figure l is j `a side view of a portion of'a car-truck hav- `ing our improved .brake applied thereto, the

brakesupporting lever and brake being shown in full lines and the car-truck in dotted lines and Fi 2 is a plan view, onan enlarged `scaleo the brake mechanism Shown in Fig. 1.

8 designates the wheel-pieces of an ordinary car-truck; 4, the pedestal-jaws between which the axle-box 5 is received; 6, an equalizer-spring 7, the equalizer-bar; 8, the brakebeam; 9, the brake-head, and 10 the brakeshoe. These parts are or may be of any suitable or usual construction..

The brake-supporting lever by which 'the brake is carried is designated by 1 1, and it is arranged to be fulcrumed on the axle-box in Some suitable way. As herein shown, this is accomplished by providing said lever with a centra ring-like bearing portion 1'2, which encircles and has its bearing on a circular ,flange 13, formed about the usual oil-box, all

sult.

` as shown and described in a copending zpplication filed by William S. Washburn, rial No. 241,248. p This, however, is only one of various ways in which the brake-supporting lever could bevfulcrumed von the axle-box, and the present invention is not limited to the particular way of accomplishing this re- The inner end 14 of said lever is secured vto the truck-frame in some suitable way, preferably by extending saidV end through an eye 15 on the usual cap 16 ofthe equalizer-spring. The outer end 17 ofSai-d lever carries a brake, all as shownin said copemling application. In order that said lever may support another brake to act on the 'opposite side of the wheel from the abovementioned brake, said lever is formed with an additional arm orprojection 18, on which a' second brake 191s supported, said brake acting oppositely to the br-ake 9 10, Supported by the outer end of the lever. VThese two' oppoSitely-acting brakes may be Secured to the brake-Supporting lever in-any suitable mounted on the end 17 and arm 18, respec- 7s Vway.` 'They are herein shown as slidably tively,.of the brake-supporting lever, said end and arm each loosely passing through aneye 20,. carried by the rake-head or the brake-shoe or some other suitable part ofthe corresponding brake.

tial to the invention, nor is the manner of supporting the brakes from said lever.y f Neither is it'essential that the two brake-supporting levers at the opposite ends of any car-axle be independent from each other, as our inventionwould not be departed from if they were connected in some other way. We believe, however, that we are the first to provide a Too I pivotally-mounted brake-supporting lever 'y with means for supporting two brakes, and therefore we-desire to claim this broadly. It

Will be obvious, therefore, that many changes in the manner of uleruming eaeh brake-sup porting lever or of seouring'the brakes ton the Y annular bearing-surface, a brake-supporting p lever provided intermediate its ends With a circular bearing to engage the bearing-surface of the axle-box, and a plurality of brakes sustained by said lever.

4. In a car-brake, an axle-box having an annular bearing-surface, a brake-supporting lever provided intermediate its ends With a circular bearing to engage the bearing-surface ofthe axle-box, and a plurality of brakes sustained by said lever, said brakes being adapted to aot on the same oar-Wheel.

5. In a oar-brake, an aXle-boX having an annular bearing-surface, a brake-supporting lever provided intermediate its ends with a eireular'bearing or ulerum portion to engage the bearing-surface of the aXle-boX and a plurality of brake-supporting arms extending from said bearing orfulerum portion in opposite directions, and a brake supported by each arm.

6. Abrake-supportinglever for a oar-brake provided intermediate of its ends with a eiroular bearing adapted to engage an annular bearing-flange on the axle-box, said lever having a plurality of brake-supporting arms proj eoting from said circular bearing.

7. A brake-supporting lever for a oarbrake provided intermedlate of its ends with a circular bearing adapted to engage an annular bearing-flange on the axle-box, said lever having a' plurality of brake-supporting arms proj eoting from said circular bearing on opposite sides thereof.

8. A brake-supporting lever for a oarbrake shaped to present intermediate of its ends a curved bearing to engage and turn about a bearing on an axle-box and provided with a plurality of brake-supporting arms.

9. A brake-supporitng lever for a oarbrake shaped to present intermediate its ends a curved bearing to engage and turn about a bearing on an axle-box and provided with a plurality of oppositely-extending brake-supporting arms. p

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

WILLIAM S. WASHBURN. EDWARD S. NILES.

Witnesses:

LOUIs C. SMITH, BERTHA F. HENSER.

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