US400542A - Car-brake - Google Patents

Description

(No Modeh) B. BOYER. GAR BRAKE,

Patented Apr. 2, 1889.

MWI/XMIM?,

l .allioi'ney UNITED STATES PATENT OFFICE.

BASSLR BOYER, OF LEBANON, PENNSYLVANIA.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 400,542, dated April 2, 1889.v

Application led February 2, 1889. Serial No. 298,495. (No lmodel.)

To all whom, it may concern,.- v

`Be it known that I, BAssLER BOYER, a citizen of the United States of America, residing at Lebanon, in the county of Lebanon and State of Pennsylvania, haveinvented certain new and useful Improvements in Car-Brakes,

granted to me) by adapting the constructionsA and arrangement of the parts to any number of wheels over a single pair, as will be hereinafter specified. This I accomplish by the mechanical devices illustrated in the accompanying drawings, wherein Figure l is a bottom'plan viewof a carbodyY and trucks having my improvements connected thereto. Fig. 2 is a sectional view taken through the timbers of the truck and a side view of the operating mechanism of the brake.

In the drawings, A designates the bottom .of the car, provided with bottom` timbers, l,

and a central cross-timber, 2, to which the system of operating-levers are fulcrumed.

B denotes the truck on which the car-body is supported by means of bearing-boxes, as usual.

C denotes the cross-timbers, fixed to the bottom of the car centrally between` the wheels of the trucks, the links or rods sustaining the brake-bars being connected to these crosstimbers, substantially as shown. Below the cross-timber C` is arranged a cross-piece, D, a space being left between these two timbers for the purpose of adording room within which to dispose the disks.

E designates the brake-bars, suspended by links or rods 3 from the vcross-timbers C.

These brake-bars are provided with brakeshoes 4, as usual. In the middle rear part of the brake-bars are bearing-blocks 5, having theirinner edge faces concaved to conform substantially to the sweep of the elliptical disks, substantially as shown in the drawings.

F designates the elliptical disks, made of any suitable material, having strength sufficiently to withstand the intended uses,` These elliptical disks are mounted on vertical shafts 6, having bearings in the cross-timbers, or they may be arranged in hangers on the upper timbers. The elliptical disks: are made of such width in transverse section as that when arranged withv their longitudinal center in the direction of the cross-timbers the brakebars will be free to swing inward and leave the brake-shoes free from the wheels.

To restrain the too rapid turning of the disks in applying the brakes and to return the disks to a position of off-brake when the power has been disconnected or released, springs 7 are connected to the respective disks, the force of which restrains the rotation and bear to throw the disks in reverse movement to that extended by the power.

As shown and described in my former Letstaff or by the steam air-brake appliances, or

both in conjunction. The hand-brake leverage is designated by a rod, 8,connected to one end of the disk, the other end being connected to a lever, 9, mounted.on a bearing and having the upper end connected to a rod, l0, connected to one end of a lever, ll, fulcrumed on the bottom of the car. At the other end of the lever ll is connected a brakerod, 12, connected to the brake-staif on the platform of the car. I have not shown this last connection, as it is so well known as not to require special description or illustration. The piston 13 ofthe steam or air brake apparatus 14 is connected to the lever l1, to which is connected one end of a rod, l5, connected at the other end to the disks, substantially as shown in Fig. l of the drawings, the lever connections and movements in this relation being shown in dotted lines. The .interposition of the vertically-arranged lever 9 is intended to provide connection to the disks which will turn them on a horizontal plane and avoid torsional strains; but in a connection involvingadirect attachment to the disks these levers may be dispensed with.

The foregoing description involves the mechanism requisite to the application of my improved brake to the one side o f the wheels of a truck or trucks, and is substantially that shown and described in my cited Letters Patent.

It is the object, as heretofore mentioned, of

IOO

' shown.

my present invention and improvements to adapt the foregoing operating mechanism to brake-bars clamping or braking the Wheels of the truck on both sides, as shown in Fig. 2 of the drawings. Specically describing my improvements, 16 17 denote brakcbars suspended from the timbers of the car by links or chains 18 and arranged opposite to the inner brake-bars, as shown. These additional brake-bars are provided with the usual brakeshoes, 4, and are so hung from the car or supports as to swing free from the Wheels when off brakes. On each of the inner brakebars, being those arranged between the wheels, is connected a bar, 20, having the other ends connected to the opposite outer brake-bar, as This arrangement and connection, it will be perceived, eventuate in simultaneously moving all the brake-bars toward the face of the wheels and upon opposite sides thereof by the turning of the disks, and that all are released when the disks are turned off-brakes. The connections, as shown in the drawings, may be either direct or through the interposition of a lever, 2l, having a connecting-rod leading to the brake-bar.

Having thus described the mechanism i11- volved, I now proceed to particularly point out and distinctly claim the improvements and combinations whichl claim as my invention, to Wit:

l. The combination of the pivotally-supported rotary elliptical disks, the inner suspended 'brake-bars arranged between the Wheels of the truck, a lever to rotate the disks on their axis, the outer suspended brake-bars arranged to brake against the outer faces of the Wheels of the trucks, and connecting-rods from the inner brake-bars to the opposite outer brake-bar, substantially as described.

2. The combination, with the rotatable elliptical disk, and means, substantially as described, for turning iton its axis, of inner and outer brake-bars arranged to brake ou both sides of the Wheels, and rods connecting the inner and outer brake-bars, whereby all the brake-bars move synchronously on and oit brakes, substantially as described.'

In Witness whereof I have hereunto set my hand in the presence of two at-testing wit nesses.

BASSLER BOYER.

Attest:

S. G. HORST, PETER H AUER.

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