US663827A - Car-brake. - Google Patents

Description

No. 663,827. 7 Patented Dec ll, I900.

. P. BOCH.

CAR BRAKE.

(Application filed Mar. a0, 1900.; (N 0 II o d a I.)

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III VENTOH f1 F 1 3 K W THE NORRIS PETERS c0. Pnc'rm |1 o., WASHINGTON. u. a

0.663327. Patented Dec. ll, I900.

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CAB BRAKE.

(Application filed Mar. 30, 1900.1 (Ho Modal.) '4 Sheets-Shut 2.

W/TNESSES INVENTUI? A ZZNEYS' we NORRIS PETERS co, PHOTO-LUNG" WASHINGTON. o. c.

Patented Dec. 11, mm.

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Q A770 NE) P B 0 CH C A R B R A K E Application filed Mar. 30, 1900. s

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INVENTOI? mus wzrzws cu. PNOTKLLITNO" WASNINB NITED PHILIPP BOOH, on NEW YORK, .N. Y.,

ASSIGNOR OF ONE-THIRD TO HENRY MOCK, OF SAME PLACE.

CAR-BRAKE;

SPECIFICATION forming part of Letters Patent No. 663,827, dated December 1 1, 1900.

Application filed March 30,1900. Serial No. 10,721. (No model.)

To (LZZ whom it may concern:

Be it known that I, PHILIPP BOCH, a citizen of the United States, residing in the city of New York, borough of Queens, and State of New York, have invented certain new and useful Improvements in Oar-Brakes, of which the following is a specification.

This invention relates to car-brakes of the class provided with rail and wheel brakeshoes adapted to be forced down upon the rails and against the wheel of a car, such as an electric or other power-driven street-car, the objects of the invention being to provide a brake of the described class which is com- I 5 parativelysimple, powerful in action, quickly applied, and automatically released.

The invention consists of a car-brake which comprises guide-plates suitably supported on the car-truck, side plates guided by said guide-plates, a brake-beam supported by said side plates, rail and wheel brake-shoes attached to the side plates, automatically-operated means interlocking with the brake-beam for holding the brake -shoes released, and means for unlocking the brake-beam and applying the brake-shoes, all as hereinafter described and then particularly claimed.

In the accompanying drawings, Figure 1 is a side elevation of my improved car-brake, showing it applied to a car-truck and ih inoperative or released position. Fig. 2 is a sectional detail view showing the brake-beam, a side plate, anda pair of rail and wheel brake-shoes. Fig. 3 is a sectional side elevation of the brake, showing it inoperative. Fig. 4: is a similar view showing the brake applied, aud Fig. 5 is a broken plan View of the brake.

Similar letters of reference indicate corresponding parts. I

Referring to the drawings, A indicates a portion of the truck-frame of a car which is equipped with my improved brake, said frame having bracket extensions A, connected by a cross-beam B of T shape in section. On these bracket extensions are mounted the working parts of the brake, to which end parallel guide-plates O are fixed on the said extensions at opposite sides of the car-truck by 50 means of clamps Of, which fit over the extensions 0 being screw-bolts which rigidly bind the movable and fixed portions of the clamps down upon the said extensions. The said guide plates are preferably curved or so shaped as that their outer extremities will lie in approximately the planes of the car-wheels.

D indicates the rail-brakes5 E, the-wheelbrakes; F, side plates, to which said brakeshoes are fastened at d and 2, respectively, and G the brake-beam, of T-shaped section and the ends of which are suitably secured to the said side plates F (see Fig. 2) by seating them in saddles F, projecting from the plates F and fastening the same thereto by fastenings F The plates C are provided at points preferably above the axles with inclined-slots c and below the axles with inclined slots 0, which are more greatly inclined away from the brake-shoes than slots 0, for the purpose to be hereinafter stated, said slots 0 c receiv- 7o ing and guiding the pins ff, projecting from plates F. At the inner side of the brakebeam G are lugs or brackets g, to which are pivoted the lower ends of links h, the upper ends of which are pivoted to supporting-rods H, which are guided in logs or brackets 19, secured to the inner side of the cross-beam B. Rods H are screw-threaded at their upper ends to receive nuts h, between which and the lugsb helical lifting-springs I are confined, which springs tend to draw the cheek or side plates F upwardly, and with them the brake-shoes D, which are thereby held raised above the rails T. The pins and slotsfc and f 0 direct the side plates F in such a manner as to permit the springs I to simultaneously draw the brake-shoes E from contact with the car-wheels W.

K K indicate actuating-levers which are connected by cross-rodK, to which is pivoted a draw-rod L, (omitted in Fig. 5,) leading to a suitable point for operation by the motorman or engineer. Said levers K are pivoted to lugs h on the cross-beam B at it, and are also pivoted at their lower ends at 70' to Wedgeshaped depressors M, whose upper and lower surfaces have bearing upon rollers O, mounted in bearings O on the cross-beam B, and upon roller P, mounted in bearings p on the brake-beam G.

Preferably formed integrally with and extending downwardly at right angles to the springs I.

the swinging-link connections h.

depressors M is a hook M, constituting a latch the hooked lower end of which is adapted to engage with the under side of the brakebeam G, so as to positively lock the brakeshoes in inoperative position until released through the action of the lever K.

Normally the brake is in the position shown in Figs. '1 and 3. To apply the brake, a pull is exerted on the draw-rod L in the direction indicated by the adjacent arrow in Fig. 4, which thereby draws in the depressors M, which depressors (having a fixed bearingpoint above) by reason of their wedge'shape act to push down the rollers P and the brakebeam and to simultaneously apply brakeshoes D and E to the rails and wheels, re-

The difierence in the inclination of the slots 0 0 causes the lower portions of the brake mechanism to advance more rapidly than the upper portions and prevents the upper end of the brake-shoes E from firststriking the wheels, which is liable to affect the proper action of the mechanism. In releasing the brake-shoes and moving the parts to the position shown in Fig. 3 the rod L is moved in the direction indicated by the arrowywhich' thereby causes levers K to push out the wedgeshaped depressors M, thus permitting the brake-beam G and the side plates F to be raised and the brake-shoes E D to be withdrawn'from the wheels and rails by the upward action of the lifting-springs I upon the supporting-rods 'H. The brake-beam of course partakes of the movement of the side plates'F; but this does not Wrench or injure the lifting-springs and their rods owing to When the brake-shoes are properly released, the depressors M, guided in an approximately rectilinear direction by the antifriction rollers O P, move the latches M with 'themtoward the brake-beam'and engage the hooked lower ends of said latches with the underside of the brake-beam, thereby automatically looking the brake-beam and responding parts in raised position and the brake-shoes in released. position. The function of the latc'hes'Mis all important, as when by reason of inequalities in or obstructions on'the track the truckframe is subjected toconsiderable jolting,

the brake-shoes, supported in released position only by'the springs 1, might by responding to the jolts moveso far as to contact with the track and wheels were it not for said latches, which, engaging with and latching the brake-beam positively prevent a res ponding movement of the brake-shoes and the movable parts. The strong springs I assist in engaging the latches with the brake-beam, because by raising the latter they permit the same to push the wedge-shaped depressors outwardly by the action of the rollers P on the inclined lower edges of said depressors.

My improved car-brake is strong and durable and every part is accessible when required. Being powerful, it may be applied without taxing the strength of the motorman or engineer, stopping a car within a few feet, while its action when the pull-rod is released is entirely-automatic, even to the locking of the parts against movements. The brake is automatically locked when released, so that it is not continually racked or worn out by the jolting of the car, in consequence ofwhich the 'brakeis long-lived.

Having thus described my inventi'on,=what I claimas new, and desire to secure by Letters 'Patent, is

1. In a car-brake, the combination of suitable guide-pla'tes, supported from the cartruck, side or check plates guided upon said guide-plates, a brake-beam supported bysaid side plates, rail and'wheel brake-shoes attached to 'saidside plates, automatically-op erated means, interlocking with the brakebeam, for holding thebrakeshoesreleased,

and means for unlocking the'brake-beam'and applying the brake shoes, substantially asset forth.

' 2. 'In a car-brake, the combination ofsuitable guide-plates,'supported from the cartruck, side plates, slot-1andpinconnections between theside plates and guide-"plates, said slots'being inclined outwardly,-a brakebeam supported by said side plates, brakeshoes attached to said'side plates, means for automatically locking the break beam in raised position and for holding the brakeshoes released, and means for unlocki'ngnthe brake-beam and applying "the brake-shoes, substantiallyas set forth;

In a car-brake, the combination of'suitable guide-plates supported from the-cartruck, side plates guided'upon-said guideplates, a brake-beam supported bysaid-side plates, rail and wheel brake-shoes attached to said side plates,'a latch, means for automatically engaging said latch with the brake beamywhen the brake is released, whereby the said brake-beam and other mova'ble parts are locked in position, and means for unlocking'the brake-beam and applying thebrake,

substantially as set forth.

4. 'Ina car-brake,the combination of-suitable 'guideplates, supported from the cartruckyside plates guided upon said guideplates,'-a'brakebeam connectedwith said'side plates, rail and wheel brake-shoes,'attached to the side plates, springactuated liftingrods, pivoted lin'ks connecting the brake-beam and lifting-rods, and means for lowering said brake-beam for'applying the brake,substantially as setforth.

5. In a car-brake, the combination'ofsuitable guide-plates, supported from the cartruck, side plates guided upon said guideplates, a brake-beam connected with said side plates, rail and Wheel brake-shoes attached to the side plates, lifting-springs acting on the brake-beam, automatic latches adapted to engage and hold the brake-beam i-n lifted position, and means for lowering said brake-beam for applying the brake, substantially as set forth.

6. In a car-brake, the combination of suitable guide-plates, supported from the cartruck, side plates guided upon said guideplates, a brake-beam connected With said side plates, rail and Wheel brake-shoes, on said side plates, a wedge-shaped depressor guided between the brake-beam and a fixed bearingpoint above, means for pulling upon the said depressor for depressing the brake-beam, means for raising the brakebeain, and means for locking the same in raised position, substantially as set forth.

7. In a car-brake, the combination of suitable guide-plates, supported from the cartruck, side plates guided upon said guideplates, a brake-beam connected with said side plates, rail and WheeLbrake-shoes on said side plates, a wedge-shaped depressor guided between the brake-beam and a fixed bearingpoint above, a latch carried by the said depressor, means for pulling on the said depressor for lowering the brake-beam, and devices for automatically raising the brakebeam and causing the latter, through the depressor, to engage the latch with the brakebeam, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in pres ence of two subscribing witnesses.

PHILIPP BOOH.

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