US262378A - Car-brake - Google Patents

Description

(ModeL) L. D. DAWLEY & A. R. SPAULDING.

CAR BRAKE.

No. 262,378. Patented Aug. 8, 1882.

WITNESSES INVENTOR N. PEYERS, Pmwumn n nu, wmmgnm, o. c.

UNITED STATES PATENT @FFiCEe LAFAYETTE D. DAWLEY, OF ADA, AND ADDISON R. SPAULDING, OF LAKE CITY, MINNESOTA.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 262,378, dated August 8, 1882.

Application filed May 17, 18852.

To all whom at may concern Be it known that we, LAFAYETTE D. DAW- LEY, of Ada, in the county of Norman and State of Minnesota, and ADDISON R. SPAUL- DING, of Lake City, in the county of Wabasha and State of Minnesota, have invented a new and useful Improvement in Gar-Brakes, of which the following is a full, clear, and exact description.

to Our invention relates to improvements in automatic car-brakes; and it consists in the pcculiar construction and arrangement of parts, as hereinafter more fully set forth.

Reference is to be had to the accompanying drawings, formingpart of this specification, in

which similar letters of reference indicate corresponding parts in all the figures.

Figure lis a sectional elevation ofa railroadcar and trucks having our new and improved momentum-brake applied thereto. Fig. 2 is an inverted plan view of the same; and Fig. 3 is an end elevation, partly in section, showing the-means for swinging the buffer out of line with the buffer of the adjacent car. The body A and the trucks B B of the car may be of any approved construction, and the cross pieces or bars 0 G, to which the brakeshoes D D are attached, are of ordinary form, and are suspended in the ordinary manner from the bottom of the car or from the frame of the truck by means of the chains, rods, or links 0 0. Upon the cross-piece O, in the center thereof, is pivoted the angle-plate or housing E, which carries thebuffer-rod F and coiled or other spring G, placed upon the rod F. The outer end of this rod Fis enlarged to form the buffer plate or head 0, and is provided within the housing E with the adjustable collar e, for adjusting the tension of the spring G, and the rod is held loosely in the said housing or plate, so that it is adapted to have longitudinal movement therein against the action of the sprin H is a lever attached at one end to the but- 4 5 fer-rod F, and is pivoted to the end or platform of the car, as shown at i, for swinging the butfer-rod and housing-plate upon the pivot to (shown in Fig. 2) out of line with the center (ModeL) of the car, as shown in dotted lines in Figs. 2 and 3. Forholdinglever, buffer, rod ,andhous- 5o ing at any desired position the bent ratchetbar J is provided, with the teeth of which the spring plate or pawl j engages, as will be un; derstood from Fig. 3. Leading from the crossbar (J is the connecting-rod M.

To the centerpiece, K, of the truck B isattached the hanger L, in which the angle-plate or housing E is held so as to be adapted to have longitudinal movement. This plate or housing is precisely similar in construction to the plate E. It holds loosely the outer end of the connecting-rod M and the coiled or other spring G placed upon the rod the same as the housing E holds the buffer-rod F, except that the plate E is riveted and is adapted to move upon the rod M against the tension of the spring G, whereas the plate E is held rigid against all'longitudinal movement. The tension of the spring G is adjustable bymeans of the collarf, placed upon the rod.

Pivoted to the housing E is the bent bufferrod F, the outer end of which is enlarged to form the buffer plate or head g, and is held by the pivoted lever H, which latter is in all respects like the lever H, and serves a like purpose of throwing the butter-rod F out of line with the center of the car, so that it will not come against the buffer of the adjacentcar, in which position the brakes will have no automatic action.

To the cross piece or barO is pivoted the ordinary brake-lever O, which is connected with the cross-piece O by means of the connectingrod P, and with the hand-wheel Q by means of the rod, chain, or similar connect-ion R, for applying the brakes in the ordinary manner when the automatic or momentum mechanism for applying the brakes is out of action or when not sufficient to control the train.

l/Vhen the automatic or momentum mechan- 9o ism for applying the brakes is arranged for operation, which is done by bringing the buffers by means of the lever H or H in line with the center of the car, so that the heads of the buffers throughout the train will come together when the speed of the train is retarded by slackening the speed of the engine, the bufferrods will crowd against each other and be forced forward and rearward against the springs G G by the pressure ot'the butler-rods against each other, due to the momentum of the cars, and thus will force the cross piece or bars 0 and 0 toward the wheels of the truck and automatically apply the brakes.

Vhen the bufl'ers are thrown out ofline by o ierating the lever H or H it will be understood that the ears may be drawn in any direction without operating the brakes, and it will be understood that the bufier-rods must be a littlelonger than the draw-heads and ordinary buffers of the cars, so that they will have sufficient backward and forward movement for applying the brakes, and instead of using the adjustable springs on the butter-rods other meehanismsuch as levers, cranks, eccentric-may be used and not depart from the spirit of our invention.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. The combination, with the erosspieeesO O, of the bufl'er-rods F F and plates or housings E E with the springs G G, substantially as described.

2. 'lheeombination ot the cross-pieces O U of" the buffer-rods F F, the plates or housing 0 E E, the springs G G, and the levers H H for throwing the buffer-rod out of line, substantially as shown and described.

3. The combination, with the lever H, pivoted to the end of the car, and the crossbar 5 G, of the plate-housing E, pivoted to the bar U, the butter-rod F, provided with the head 0, the spring G, and the adjusting-collar 0, substantially as and for the purpose set forth.

LAFAYETTE 1 DALEY. ADDISO) 1t. SPAULDING.

itnesses to Lafayette 1). Dawleys signa ture:

H. M. HUNTING, D. S. WEs'r. lVitnesses to Addison R. Spauldings signature:

E. M. CARD,

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