US354891A - Louis dube - Google Patents

Description

. .Il Il f 1. ....rL

L. DUBE.

GAR BRAKE.

--(No Model.)

Patented Dec. 28, 1886.

MMM?

UNITED .STATES LOUIS DUB, OF ALBANY, NEW YORK, ASSIGNOR OF ONE-HALF TO PATENT rrici. 'd

ANTHINE F. LA ROSE, OF SAME PLACE.

GAR-BRAKE.

SPECIFICATION forming part of Letters Patent '1 \To. 354,891, dated December 28, 1886.

Application' filed April 24, issu.

To all whom, t may concern/.-

Beit known that I, LOUIS DUB, a citizen of the TJnited States, residing at Albany, in the county of Albany and State of New York,

5 have` invented certain new and useful Improvements in Car-Brakes, of which the following is a specification.

My invention relates to brakes for cars in which areemployed the devices and elements, and combinations of devices and elements, hereinafter particularly described, and specifically set forth in the claims.

The object of my invention is to produce a simple and efficient mechanism by means of which the driver or brakeman can readily apply the brake-shoes to the periphery of the car-wheels with greater or less force, as may be required, for checking the speed of the car or for holding the same from running. I attain these objects bythe means illustrated in the accompanying drawings, forming a part of this specification, in which- Figure l represents the bottom of a horse` car with the improvements in this invention applied to it and viewed from below. Fig. 2 is a sectional view of the same, illustrating` the brakeshoes in action with the wheels of a car or truck.

The san'ie letters of reference refer to similar parts throughout the several views.

In the drawings, A A represent the wheels of a car (or truck.) BB are the axles. C C are the brake-shoes, employed in pairs and secured to the brake-bars C in any suitable manner, and suspended from the bottom of the car.(or a fixed piece of a truck) by means of the suspensionlinks a a.

In Fig. 2 the shoes C C are represented as being drawn tight against the periphery of the wheels A, while in Fig. l they areshown-to be Iout of contact with the same.

Y D D are levers pivoted to the lower side of the car (or to a xed piece of the truck) by means of-bolt d, suitably supported by bracket b, secured to the car (or truck.) Arranged at right angles to these levers and connected with the same are arms E E. Connected with the outer ends of these arms E are cams E', having operating-faces c made in the form of curved Serial No. 200,038. (No model.)

the friction-rollers F F, which have their bearings on pins or bolts f, that are supported in housings G of suitable form. These housings are suitably connected with the respective brake-bars O, so as to move the latter accordingly as they are moved.

H H are suitable brackets securely attached to the car, for supporting the housings G and their connected draw-straps g, which connect them to the brake-bars. These brackets are preferably so arranged and secured to the car that they give firm support to the housings. and prevent `them from being tilted in either direction, and in each of them is provided a slot, h, and the housings are each heldin place by bolt f of roller Fworking through the slot h in bracket H, andbolt h working in slot h of the bracket H, Beingthus secured with the said brackets, the said housings will be suitably supported and guidedin their movements in either direction.

In a side of the body of each cam Eis made a groove, e, which is parallel with the face o of the cam, and projecting from one ofthe links of housing Gr on the draw-strap g, vconnected with the same, is the guidepin e', working in groove e. These guide-pins at all times hold with their respective grooves and operate to move the housings and their connected brakebars off from wheels A when the arms E, carrying cams E,are turned back from direction indicated by arrows in Fig. 1.

I I are draw-rods provided each with a drawchain, i, which connect the ends of operating levers D with the respective drums J, at each platform. In the drawings, only one platform and one of these drums withthe adjuncts is shown, and as these drums and their adjuncts are substantially the same in construction and arrangement and operation, a description 'of one shown will apply to the others not shown. These drums are mounted on suitable bearings secured to the platform and preferably to the lower side of the front sill of the same,and are free to be revolved. Connected with drum J 5o inclines, as shown in Fig. 1. These curved is a cog-gear, K, and working with this cogroo gear is the toothed rack L, provided with footpiece Z. This rack is suitably supported and guided with its teeth in engagement with the cog-gear in any suitable manner. A latch, M, pivoted with the platform,is provided for holding the rack L to any point it is moved to by engagement with the cogs of said rack.

In operating my improved brake, the operator will press with his foot on the end of footrack L and force the same down fromposition of dotted lines, Figf2, to that of full lines in the same figure, when this rack will, through cog-gear K, revolve the drum J and wind up the draw-chain z', and thereby pull on rod I and move levers D from position of full lines, Fig. 1, to that of dotted lines in the'same figure, when arms E-.will be moved to carry the Y cams E in direction of arrows 1,when the faces of said cams will be made to progressively move against the friction-rollers F and crowd housings G rearwardly or outwardly from position of full lines in Fig. 1 to that of dotted lines in the same figure, when the draft or pull will be on the straps g in direction of arrow 1 in Fig. 1, and thereby draw the brakebars toward wheels A and force the shoes C against the peripheries of said wheels. A reacting-spring, S, Fig. 2, suitably coiled and connecting with pivot d and bracket b, as in the manner of torsion-springs, operates to move levers D and their connected cam-arms E in direction reverse to that of arrow 1 in Fig. 1. If preferred, a reacting spring 0r springs may be employed at any suitable place between the arms E or levers D, and the car for reversing the movement of said parts and their connected adjuncts. By this reactingspring S the arms E, levers D, and cams E will be reversed, and the movements of said cams in the reversed direction will, through their grooves e, operating with pins c', move the housings holding the friction-rollers and the straps g in direction to carry the shoes attached to the brake-bars away from the wheels of the car or truck. l A

I am aware the brake-bars or brake-heads of cars have been operated by means of crossbars or lever-s pivoted to the lower side of the car, and carrying by one or more of its arms anti-friction rollers, which were forced at will against the back ofthe brake head or bar. I therefore do not broadly claim such crossarms as my invention; but cross-arms having one or more true cams as employed by me in connection with corresponding friction-rollers carried by a movable housing are, I believe, new with me, and effect novel results not before obtained where cross arms have been enlployed.

These above-describedimprovements can be applied to trucks of railway-cars which are pivoted t'o their bodies by 'making suitable modifications of some of the parts, and without materially changing the character and operations of the principal elements above described.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. In car brakes, the combination, with brake-bar C, of friction-roller F, draw-strap g, connecting said roller with said bar, cam E', carried by arm E,'which is pivoted with a 1ever to the car and operated at will by adrawrod and drum from the platform of the car, substantially as and for the purposes set forth.

2. In car-brakes, the combination, with the wheels of the car or its truck, brake-bar provided with shoes C C, draw-strap connected with said brake-bar, housing G, connected with said draw-strap and carrying frictionroller F, of the cam E', working against said f roller and moved by an arm which is connected with the lever D, and draw-rod I, provided with draw-chain z', connected with a drum which is revolved by the operator at will, substantially as and for the purposes set forth. 3. In car-brakes,the combination,with lever D, connected by means of an arm with a cam working against a friction-roller mounted in a movable housing, G, which is connected with the brake-bar, of the drum J, cog-gear K, foot toothed rack L, and draw rod and chain I i, substantially as and for the purposes set forth.

4. In a car-brake, the combination, with the foot toothed rack L, operating the cog-gear-of 4a. drum which is connected with the drawchain i of the draw-rod of the brake, of the button or latch M, pivoted to the platform and 4 operating with the cogs of said rack, substantially as and for the purposes set forth.

5. In a car-brake, the combination, with the movable housing G, of a friction-roller which is connected with thebrake-bar by draw-strap g, and the guide-pin e', `connected with said strap or housing of the groove e in the cam E', attached to arm E, which is connected with the pivoted lever D, and the reacting-spring S, substantially as and for the purposes set forth.

Louis DUBE.

W'itnesses ALEX. SELKIRK, THOMAsRoCHE.

Images