US317554A - Cae beake - Google Patents

Description

(No Model.) 2 Sheets-Sheet. 1. K. H. H. LEINEWEBER.

OAR BRAKE.

Patented IVfay 12, 188;)

Win/65866. jwwjar a. mum MM. wm m;

UNITED STATES PATENT OFFICEQ KARL H. H. LEINEWEBER, or SOUTH CHICAGO, ILLINOIS.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 317,554, dated May 12, 1885.

Application filed December 30, 1884. (No model.)

To all whom it may concern:

Be it known that I, KARL H. H. LEINE- WEBER, a subject of the Emperor of Germany, residing at South Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Car- Brakes, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to an improved carbrake.

The object of the invention is to provide a simple and effective brake; and to that end it consists of the novel devices and combination of devices, as will be described and claimed.

Reference will be made to the accompanying drawings, in which Figure 1 is a plan view of a truck; Fig. 2 a section through the same;

Figs. 3, 4, 5, parts used for shifting cars; and

Fig. 6, a detail of the draw-head.

Like letters refer to like parts in each view. A represents the longitudinal beams of the truck-frame; A, suitable cross-pieces; B, the

wheels; and D the draw-head. Draw-head D is mounted in a frame, E, and is adapted to move therein. This frame is secured to a cross-beam, E, and a bolt, F, passes through said cross-beam and through the end of the draw-head.

Secured to bolt F, between the rear of frame E and the rear of the draw-head, are twosprings, a a, the former being a light spring and extending the entire length of the bolt between the points named when the drawhead is in its normal position, while the spring a is heavier and extends about half the distance and abuts, when no pressure is applied to the draw-head, against the rear of frame E only. Similar springs, 12 b, are situated upon bolt F within the draw-head, and both abut against a head, 0, formed on the end of said bolt, the heavy spring extending but about half-way of the distance, as shown. When no pressure is applied to the draw-head, the light springs a I) are sufficient to hold the drawhead in its proper position; but if the drawhead is drawn forward by the pull of the engine its end is finally brought against the end of spring b, which is sufficiently strong to stand the strain, the heavy spring a serving a like purpose when a back-pressure is applied.

Upon the lower face of the draw-head is formed a-rack', d, the teeth of which mesh with a pinion, e, keyed to a shaft, G, Fig. 1, so situated that it will be revolved upon the forward or back movement of the draw-head. Keyed to shaft G are pulleys f, one upon each side of the truck. Secured to each pulley are the split ends of a rope, g, which extends back and is secured to a lever, h. Secured to the same leveris a cord,7c, which is connected also with a lever, Z, which in turn is connected by a cord, m, to a spring, a, said spring being secured to a crossbeam, as shown. Levers hZ are pivoted each in a frame, 0, and are provided on their lower ends each with a camhead, p. Frames 0 are mounted each at one end upon a bolt, q, secured to the central beams of the truck-frame, and at their opposite ends upon bolts .9, secured to suitable cross-pieces, tov

which the brakeshoes H are secured. Bolts 8 pass through the frames, and are each provided with a head, t, against which one end of a spring, 1;, abuts, the opposite end of each of such springscontacting with the end of its frame 0, and the head of each of such bolts occupying a position which will allow the camheads of levers h l to contact therewith.

The operation of the device as thus far described is as follows: The normal position of the brake-shoes when the car is at a standstill is such as to contact such shoes with the wheels. If the car is started forward the pressure applied to the draw-head draws it forward, and the springs b bact as described. By this forward movement of the draw-head the pinion e and its shaft G are operated through the medium of rack d. In this manner the pulleys f are partly revolved and serve through the medium of the ropes described to operate levers h Z. The cam-heads of these levers being thus forced against the heads of bolts 8, the beams to which the brake-shoes are secured are operated to carry the shoes from the wheels. As soon as the forward pressure is removed from the draw-head, the parts assume their normal position and the brake is applied again.

A similar result to that above described is brought about bya back-pressure upon the draw-head.

Should the rope 9 break, the spring a will serve to keep the brake-shoes from contact with the wheels.

In Figs. 3, 4, 5, I have shown mechanism to be employedwhen it is desired to shift the car on the track without attaching an engine. As shown, the shaft G is squared on each end and protrudes out sufficiently to receive a wrench, K.

Secured to each squared end of this shaft is a star-shaped disk, w, which rests in a socket, as shown in Fig. 1. In the face of the beam in which the shaft has bearing and at points between the points of the star-disks are formed openings 00, adapted to receive the end of a pin, L. At a suitable point pin L is provided with a grooved collar, 3 into which one arm of disk 10 is adapted to enter.

The manner of using this part of the invention is as follows: The shaft G being partly revolved through the medium of wrench K sufficient to free the brakes the pin L is inserted into one opening 90 and one arm of the disk inserted into collar '2, the pin being thus held in position and serving to prevent the brakes being applied While the car is being moved. When it is again desired to apply the brakes, the pin is removed and the parts carried to their normal position by the springs.

What I claim iS 1. In a car-brake, the combination, with a draw-head, a bolt passed through the rear end. thereof, light and heavy springs situated upon said bolt to the rear of the draw-head, and

ion 6 and pulleys f, of cords k, vertical levers h Z, intermediate mechanism for operating brake-shoes from the levers, and cord in and spring'n, as set forth.

4.. In a car-brake, the combination of the following elements: a shaft, brake-shoes, intermediate mechanism for operating the shoes from the shaft, a Wrench for revolving the shaft, a star-disk secured thereto, and a pin for holding the parts in any given position, as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

KARL H. H. LEINEWEBER.

Witnesses:

W. J. OLAGETT, LOUIS NOLTING.

Images