US365839A - Car-brake - Google Patents

Description

(No Model.)

GAR BRAKE.

D... V m

no j Pfl ' VNiTeD STATES PATENT Finca0 THOMAS JEFFERSON MEGON, OF BEAVER FALLS, PENNSYLVANIA.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 365,839, dated July 5, 17887.

Application filed January 2l, 1887. Serial No. 25,000. i. (No model.)

To all whom t may concern:

' the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in the art to which it appertains to make anduse the'same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to an improvement in railroad-car brakes, and especially upon the brake that is described and shown in a pending application, filed by myself on the 26th day of May, 1886, No. 203,342, and to which it adds the quality of' easily and securely braking up or stopping themotion of a car when. such car is uncoupled from other cars to go upon a siding or switch-track, and when the automatic brakes are not in position to act, as will be fully hereinafter described and shown; and the invention consists in the combination of special parts, by the construction and arrangement of which the desired result will be fully accomplished when the parts are put in oper'- ation, as described.

In the drawings, Figure l represents a section of a car-frame in side view,with the brake device partly in section as applied to a wheel of a car. Fig. 2 represents al transverse sectional view on line l l of Fig. l; and Fig. 3 is a transverse section on line 2 2, Fig. l.

A represents the longitudinal sills of a car. A represents a transverse end sill of the carframe, and a and a are other transverse tim-` bers necessary in the car-frame, and to which the devices for braking up acar are or may be attached.

B represents a common pedestal, in which the axles B to wheels C are secured in proper boxes or bearings.

D represents a box or case securely attached to the frame-Work of the car and underneath the sills thereof, and ,in which the drawhead D and draw-bar D are secured in any secure manner, and to givethe proper elasticity thereto in starting a car.

E is a perpendicular shaft at the endl of a car, and passes down through the end transverse sill far enough to have a winding-chain, e, secured to its lower end.

E is a hand-wheel or winch upon thetop of shaft E, and by which the shaft is revolved in winding or unwinding the brake-chain e, which extends backward from shaft E to the top of a lever-arm, F, that is pivoted atf to box D or other xed part of the frame,-and at thelower end this arm is connected to link F',` that extends to and is attached to transverse brakebeain G by the eyeboltf,

H -H are brake-shoes, having a groove, 71, betweenopposite sides, which groove is open on the side toward the wheels, and each shoe has friction-rollers h' h between the sides and in the groove, free to revolve on their axles 7i, that have their bearings in thesides of the shoes, which shoes are attached to the transverse brake-beam G, as seen in Figs. l and 3.

I I are the brakes that are forced upon both the Wheels C, and the rails C are made to freely slide in the grooves 71J of the shoes, with their outer edges bearing against the fri ction-rollers h', and are guided in their reciprocations by,

`or file-cut and very hard, by which surfaces the snow or ice is cleaned off the rails, and the file-cut surface will, when hard pressed and upon a downgrade, take hold of and abrade the upper face or tread of a raill and stop the motion of a car sooner than by a smooth sole or by other known means.

= J is a transverse spring-bar secured at Vits center to the cross-girt c, and each of its ends made fast to the top of a brake, I, so that when the force is off that presses the brakes uponV the rail this spring Will exert itself to raise the brakes up and out of contact'with the rails.

The operation of this hand-brake to check' or stop the motion of a car is as follows: By

IOO

turning the shaft E to wind chain e thereon it i causes the upper end of pivoted lever F to vibrate inthe direction of the arrow, while its lower end will vibrate in the opposite direction,whieh, through the link F,will cause the transvesse brake-beam G to force the brakeshoes H,with the brakes I, against the wheels C, and the rotation of the wheels will cause the sliding brakes I down upon the rails C', when it can be locked in that position by the common ratchet-wheel and pawl or by the device J.

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

1. The winding-shaft E, chain e, arm F, link F', and brake-beam G, in combination with the brake-shoes H and sliding brakes I, whereby friction is applied to both the wheels of a car and to the rails of a railway, substantially as described.

2. In a hand-brake for arail car, the combi- 2o nation of the brake-shoes H and sliding brakes I therein, having removable soles I', serrated or file-cut on their lower surfaces, with the wheels C of the car, substantially as and for the purpose described. i 25 In testimony whereof I affix my signature in presence of t'wo Witnesses.

THOMAS JEFFERSON MEGOWN.

Y Witnesses:

NEWTON CRAWFORD, FRANK M. GREEN.

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