USRE5505E - Improvement in steam-power air-brake devices - Google Patents
Improvement in steam-power air-brake devices Download PDFInfo
- Publication number
- USRE5505E USRE5505E US RE5505 E USRE5505 E US RE5505E
- Authority
- US
- United States
- Prior art keywords
- power
- car
- brake
- wheels
- steam
- Prior art date
Links
- 230000001808 coupling Effects 0.000 description 22
- 238000010168 coupling process Methods 0.000 description 10
- 238000005859 coupling reaction Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 6
- 206010022114 Injury Diseases 0.000 description 2
- 101710040692 PARPBP Proteins 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
Images
Definitions
- the present invention relates more particularly to an improvement on the invention secured to me by Letters Patent of the United States, dated April 13, 1869; and it consists in an improved construction and combination of devices for operating the brakes by the power of compressed air, substantially as hereinafter described and claimed.
- the frame-work AA of the car, the wheels B, brake-bars b, rubbers or shoes b, and truckframe B are of the usual or any known con struction.
- Power is communicated to the brakes by any suitable arrangement of rods ce 'and levers a.
- the brake-cylinder D receives compressed air by the air-pipe d, and power is communicated from it by a piston-stem in the manner described in the patent hereinbefore mentioned. Connection is made from the piston-stem to the rod c by means of a hollow sleeve, D, which permits the rod c to play back and forth,when the brakes are being operated by hand,without destroying the power connection.
- a connecting-rod, c leads forward to the brake-lever, as shown.
- This lever is pivoted to the car at the junction of the arms e e. rlhe connecting-rod c that leads to the brake-lever is pivoted to the outer end of the longer arm e, and the rod c', leading from the piston-stem in the sleeve D", is pivoted to the outer end of the shorter arm e'.
- the power acting .on the end of the shorter arm e will at' first give a rapid throw to the rod c and cause the brakeshoes to approach the that, as the rods c c come into line, and the brake-shoes engage the wheels, the power will be applied more slowly, (the leverage being lessened,) but with greater effect.
- a spring, f of any suitable form, (but preferably a spiral, as shown,) with the longer arm c, substantially in the manner shown in Fig. 3.
- the spring while being compressed, comes gradually into line with its own pivotingpoint'f and the pivoting-pointy of the bent lever; and the power expended in compressing it lessens at the very time when the maximum of power is required on the brake-shoes. Then the brakes are let olf the shoes partially clear themselves at once from the wheels.
- the object of the spring f is to cause them to clear the wheels entirely.
- Fig. l which represents the apparatus as applied to only half va car
- I have shown the air-pipe d as branching toward the end ofthe car into two pipes, d df, with flexible ⁇ ends.
- the same pipe d branches at the other end of the car in the same way.
- Fig. y2 I have shown these branching pipes in an enlarged l view as they are applied on the opposite ends of the same car, and with an arrangement of male and female co plings presently to be eX- plained.
- the couplings at each end are united together. This is usually done .when the ears-are not in use, and is also done on the rear end of the last ear of a train, the better to exclude dust and preserve the couplings from injury.
- a bent lever receiving power by its shorter arm from the pistonstem and communicating the same from its longer arm to the brake-lever, arranged and combined sub,- stantially as described.
- a spring arranged in connection with the lever in' a power car-brake apparatus, so that the spring will act with a continually-increasing power in causing/the brake-shoes to clear the Wheelasubstantially as described.
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