US288398A - Henby barbatt - Google Patents

Henby barbatt Download PDF

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US288398A
US288398A US288398DA US288398A US 288398 A US288398 A US 288398A US 288398D A US288398D A US 288398DA US 288398 A US288398 A US 288398A
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car
brake
pump
barbatt
henby
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/44—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems
    • B60T8/441—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems using hydraulic boosters

Definitions

  • My invention relates to that class of carbrakes in which the pressure of air, steam, or other fluid is made the means of operating the brake, and has for its object to supply each car with means of applying the brake independent of the usual connection to the locomotive or other source of power; and to this end my invention consists in locating upon a car auxiliary operating means connected directly with the main tube of the ordinary brake apparatus, whereby the brake may be operated by either the main or auxiliary source of power, or by both at the same time.
  • the invention is designed more particularly as an adjunct to and an improvement upon the brake shownand described in my patent numbered 283, 368, and dated August 21, 1883, although it may be applied to any brake belonging to the class mentioned.
  • Figure l is a side view of a part of a car, showing my improvement 5 and Fig. 2 is a modification. 4
  • the car-body is supported upon the usual trucks, one of which is shown in the drawings, having a frame of the usual construction. To this frame is attached a central cross-beam, A, vfrom which the brake bars or .beams D are suspended by links a.
  • the shoes b are pivoted to the beam, so as to bear against the treads of the wheel C.
  • To the cross-beam A is attached one or more cylinders, E, each provided with two pistons, i,
  • each cylinder having rods extending tothe opposite ends of the cylinder, and provided at the extremities with disks or heads e, arranged opposite the inner sides of the brake-beams D.
  • a tube, F opening into the cylinder and connected by means of aiexible pipe to the tube G, which extends throughout the length of the car, and
  • an ordinary air-pump, P having the usual inlet and outlet valves and operating-piston and handle, one of the valves being connected with the main pipe G.
  • This pump may be located in any convenient and' accessible part of the car, and may be of any ordinary and well-known construction. From this arrangement it will be seen that in case of accident by the breakage of connections or otherwise, ready means are furnished for controlling the car.
  • the tube G maybe provided with proper IOO stop-cocks for closingl the openings thereof, which may be operated automatically or by hand.
  • the pump P and connections would bc so arranged as to exhaust the air in thel cylinder, instead of forcing it thereinto.
  • a rotary pumpand this may be connected by any suitable means with one of the car-axles in such a manner that the inertia of the car will drive the pump and produce the pressure required to operate the brake for stopping the car.
  • I have indicated a belt passing over a pulley on the axle and another on the pump; but of course gears or any other suitable connection may be used.

Description

(No Model.)
H. BARRATT.
A GAR BRAKE. NO. 288,398.` A Patented NOV'. 13, '1883.
UNITED STATES PATENT OFFICE.
HENRY BARRATT, OF YORK, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO JACOB O. MILLER, OF SAME PLACE. Y Y i CAR-BRAKE.
SPECIFICATION forming part ofLetters Patent No. 288,398, dated November 13,. 1883.
` Application filed September 1, 1883. (No model.)
1"0 all wibo/12, 25 'may concern:
Be it known that I, HENRY BARRATT, a citizen of the United States, and aj resident of York, county of York, and State of Pennsylvania, have invented certain new and useful Improvements in Car-Brakes, of which the followingis a specification.
My invention relates to that class of carbrakes in which the pressure of air, steam, or other fluid is made the means of operating the brake, and has for its object to supply each car with means of applying the brake independent of the usual connection to the locomotive or other source of power; and to this end my invention consists in locating upon a car auxiliary operating means connected directly with the main tube of the ordinary brake apparatus, whereby the brake may be operated by either the main or auxiliary source of power, or by both at the same time.
The invention is designed more particularly as an adjunct to and an improvement upon the brake shownand described in my patent numbered 283, 368, and dated August 21, 1883, although it may be applied to any brake belonging to the class mentioned.
In the drawings, Figure l is a side view of a part of a car, showing my improvement 5 and Fig. 2 is a modification. 4
In order to more particularly describe my present invention, I have shown it as applied to a brake similar to the one shown in my patent above referred to.
The car-body is supported upon the usual trucks, one of which is shown in the drawings, having a frame of the usual construction. To this frame is attached a central cross-beam, A, vfrom which the brake bars or .beams D are suspended by links a.
The shoes b are pivoted to the beam, so as to bear against the treads of the wheel C. To the cross-beam A is attached one or more cylinders, E, each provided with two pistons, i,
having rods extending tothe opposite ends of the cylinder, and provided at the extremities with disks or heads e, arranged opposite the inner sides of the brake-beams D. At the center of each cylinder is attached a tube, F, opening into the cylinder and connected by means of aiexible pipe to the tube G, which extends throughout the length of the car, and
the pressure is brought upon the fluid in the cylinder, the pistons z' i will be forced outward and the brake-beams D will be carried toward the wheels until the shoes are pressed firmly against the latter, in which condition they will remain until the pressure is removed, when the weight of the beams and appurtenances will carry the shoes away from the wheels and bring the pistons together. Such is the usual operation of the class of brakes referred to in my application previously named.
It sometimes becomes necessary to detach the car from the train or locomotive carrying the means forcontrolling the brake; or the car may become accidentally detached. It is then necessary to have some ready and accessible means whereby the brakes maybe applied by persons upon the detached car. It has been usual to provide cars having the automatic brake with the common hand-wheel, brake-levers, and connections, whereby the car may be controlled. In place of this I have substituted means upon each car for producing pressure upon the air, water, or other fluid, and have connected the same to the main pipe G of the brake, so that in case the car is detached, as above mentioned, or the source of supply is cut off, the requisite pressure may be quickly and easily produced to operate the brakes and control the movement of the car by persons on the car itself. As illustrative of my invention, I have shown an ordinary air-pump, P, having the usual inlet and outlet valves and operating-piston and handle, one of the valves being connected with the main pipe G. This pump may be located in any convenient and' accessible part of the car, and may be of any ordinary and well-known construction. From this arrangement it will be seen that in case of accident by the breakage of connections or otherwise, ready means are furnished for controlling the car.
The tube G maybe provided with proper IOO stop-cocks for closingl the openings thereof, which may be operated automatically or by hand.
In case the vacuum-brake is used, the pump P and connections would bc so arranged as to exhaust the air in thel cylinder, instead of forcing it thereinto.
Instead of areciprocating pump, other forms maybe used-as, forinstance, a rotary pumpand this may be connected by any suitable means with one of the car-axles in such a manner that the inertia of the car will drive the pump and produce the pressure required to operate the brake for stopping the car. I have indicated a belt passing over a pulley on the axle and another on the pump; but of course gears or any other suitable connection may be used.
From the foregoing it is evident that many modifications of iny invention may be made without departing from the principle thereof. .i I am aware of Patent No. 184,507, November 21, 1876, and do not claim anything claimed therein.
1. The combination, with the main conducting-tube of a duid-pressure brake, connected to the usual source of power upon the locomotive, of a pump located upon the car and connected directly to/said tube, whereby thc brake may be operated by either the main or auxiliary source of power, or by both at the same time, substantially as described.
2. The combination, with the cylinders E, provided with the pistons carrying brakeshoes, of the main pipe G, and flexible connections between the same and the cylinder E, and the auxiliary pump l?, connected directly to the tube G, whereby the brake-shoes may be operated directly by the main and auxiliary source of power, substantially as described.
In testimony whereof I have si gned my name to this specification in the presence of two Subscribing witnesses.
HENRY BARRATT.
Vitncsses:
WM. BEITZEL, W. A. MILLER.
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