US449630A - Half to john - Google Patents

Description

(No ModeL) W. R SEIDERS.

GAR BRAKE.

No. 449,630. Patented Mar. 31,1891.

Qwi/Mwooao Y Moan:

, wheel, respectively.

UNITED STATES PATENT OFFICE.

\VILLIAM R. SEIDERS, OF READING, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO JOHN F. MOGLINN, OF SAME PLACE.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 449,630, dated March 31, 1891. Application filed December 15, 1890- Serial No. 374,714. (No model.)

To aZZ whom it may concern:

Be it known that I, WILLIAM R. SEIDERs,

a citizen of the United States, residing at Reading,in the countyof Berks, State of Pennsylvania, have invented certain Improvements in Oar-Brakes, of which the following is a specification.

This invention relates particularly to brakes for cars having one or more four or six wheeled trucks. Heretofore such brakes have been provided with brakebeams arranged front and rear of each pair of wheels and with mechanism for pressing the shoes attached thereto against the wheels. The evident and important advantage of such an arrangement is that the pressure of the shoes in opposite directions against the wheels avoids the objectionable wear and tear upon the journals and journal-bearings produced by the use of a single beam for each pair of wheels. What has prevented the more general use of the double-beam arrangement is the comparatively complex and unsatisfactory mechanism required to operate them.

The object of my invention is to provide an improved arrangement that will overcome this objection, and it is fully described in connection with the accompanying drawings, and is specifically pointed out in the claims.

Figure 1 is a plan view showing my improved brake arrangement in connection with a car having two four-wheeled trucks. Fig. 2 is a side elevation, partly in section, of one of said trucks. Fig. 3 is a plan showing a slightly-modified arrangement.

a represents the car-frame; 11, the truckframe; 0, the wheels mounted on axles d; e, the trnckbolster, by means of which it is connected with the car-body. The brake-beams 1, 2, 3, and 4 are provided with shoes 5, and are suspended from the truck-frame b by means of hangers 11 in front and rear of each The mechanism employed to operate these brake-beamsincludes a lever 7, preferably located between the front and rear beams, for one pair of wheels, as shown in Fig. 1, between beams 3 and 4, and running crosswise of the car. A rod 15, pivoted to this lever a suitable distance to one side of the center linear is connected to the beam 3, and another rod 8 connects the beam 3 with the corresponding beam 1 for the other pair of wheels. On the opposite side of said center line the lever 7 is connected by a compression-rod 10 with brake-beam 2, and by a tension-rod or extension 9 with brake-beam 4. The connections with the brake-beams are made adjustable by means of nuts or otherwise, as indicated,so as to regulate the sim ultaneous contact of the shoes upon beams 1 and 3 with their respective wheels, and likewise with beams 2 and 4.

In Fig. 1 it will be noticed that the brake mechanisms of the two trucks are connected, so that both can be operated by means of either of the hand-wheels 12, one of which is located at each end of the car, and that the sum of the power applied simultaneously to the two wheels will be conveyed to the brakes equally.

The operation from either end is as follows: .Upon turning the hand-wheel 12 the end of lever 7, to which it is connected by a chain or tension-rod-l3,is pulled toward the wheel 12, carrying with it brake-beams 2 and 4, the former of which is pushed against the wheel by the compression-rod 10, while the latter is pulled against its wheel by the tension-rod 9. At the same time the beams 1 and 3 are pulled against their respective wheels by the tensiona rods 15 and 8, each pair of beams serving as a fulcrum for operating the other pair. The connections 14 between the levers 7 7 of the two trucks convey the strain from the handwheel to which each is most directly connected to the mechanism of the other truck, so that both systems are simultaneously applied by the operation of either wheel.

In Fig. 3 I have shown the lever 7 located between the two pairs of wheels at about the center of the truck. The objection to this construction, however, is that this point of the truck is ordinarily crowded and inaccessible, whereas at the point indicated at Fig. 1 it can be easily gotten at, and, moreover, the connections let are made as short as it is pos sible to make them. It will be noticed that the lever 7 is supported exclusively from the with all of said brake-beams by means of ten sion and compression rods pivoted thereto on opposite sides of the car center line, the sole support for said lever being; from the brakebeams by means of said connecting-rods, and mechanism for rocking said lever, substantially as set forth.

In a car-brake, the combination, with brake-beams suspended in front and rear of each pair of wheels, of the brake-lever 7, l0- eated between the front and rear beams for one pair of wheels and connected with all of said brake-beams by means of tension and compression rods pivoted thereto on opposite sides of the ear center line, substantially as set forth.

In testimony whereof I at'lix my signature in presence of two witnesses.

\VILLIAM R. SEIDERS.

Witnesses:

PHILIP L. ZIIEl-EER, GEO. N. DELANY.

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