US333197A - William i - Google Patents

Description

(No Model.)

W. H. CLARKE.

STEAM AND AIR BRAKE SYSTEM.

Patented Dec. 29, 1885.

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Mrs TATES WILLIAM H. CLARKE, OF BROOKLYN, NEW YORK.

STEAM AND AIR BRAKE SYSTEM.

SPECIFICATION forming part of Letters Patent No. 333,197, dated December 29, 1885.

Application filed September 529, 1885. Serial No. 178,509. (No model.)

of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Steam and Air Brake Systems, of which the following is a specification.

My invention relates to the regulation of the motion of railway-trains, and to the class or systems of regulation in which the momentum of the moving mass of cars and locomotives is stored up for use, either to immediately operate the ordinary brakes or to start the train, or to maintain its motion after once accomplished, or to operate the locomotive whistle or bell or other devices common or not common to locomotives and cars.

The object of the invention is to provide means which shall be such an improvement upon those heretofore invented that the result accomplished will be so practical and superior and saving of fuel that it will at once become the popular system and be common to all railroads.

The elements relating directly or indirectly to my invention are an air-chamber in the boiler, a compressing air-pump, a steam airpump-i. e.,apump operated by steam-mechanism geared to said compressing air'pump, and operated by the driving-wheel of the locomotive, brakes of the ordinary kind ,and geared to a piston of a cylinder adapted to receive a gas under pressure, and suitable pipes connecting the above-named elements, as particularly hereinafter set forth. I

Figure 1 is a general view of the locomotive, while Fig. 2 shows one of the details.

As shown, the locomotive, together with its adjuncts, consists of a boiler divided into the two chambers A and B, the former serving for water and steam, and the latter for air, pipes 0 (shown in dotted lines) passing from the furnace D, through the boiler, into the blastchamber E, a compressing air-pump, F, located underneath the boiler and geared to the shaft Gr, provided with the crank H and two small wheels, I, which press upon the peripheries of the driving-wheels J, suspended levers K, which uphold the said small wheels, and which are geared by the connecting-rod L to the piston M of the cylinder N, brake-blocks O, geared to the piston P of the cylinder Q, a

steam air-pump, R, the ordinary steam-cylinder, S, a main air-pipe, T, leading from the air-chamber B, a pipe, U, provided with the valve V, and connecting the pipe T with the ordinary steam-cylinder, S, a pipe, X. connecting the cylinder N with the pipe T through the three-way valve Y, which has a third pipe, Z,

leading to the outside atmosphere, a pipe, at, connecting the air-pump F with the air-chamber B, a pipe, I), having valve 0, connecting the steam air-pump R with the steam-chamber A, a pipe, d, provided with a valve, 6, and connecting the pipe T with the cylinder Q, the

usual eXhaustpipe, f, of the steam-cylinder,

and the gageg connecting with the pipe T. The momentum of the train or the rotation of the driving-wheels cause air to be pumped into the air-chamber through the means consisting of the gearing and air-pump both operated by said driving-wheels. Subsequently this air may be employed for the same purposes as the steam itself, although the air will never do as much work in total as it consumed, for a portion of the energy is practically lost in the form of heat produced by friction. The cylinder N has a piston which, when pressed downward by admitted air under pressure, causes the wheels I, by means of any intermediate gearing, to be pressed against the driving-wheels, so that motion willbe communicated from the latter wheels to the former wheels.

While standing at a station the steam airpump may utilize the steam-power by pumping air into the air-chamber, and when the train is to be stopped very suddenly the brakes may be operated by the stored-up air, and the wheels I may also be set into operation, so that the work consumed in the said operation will tend to stop the train as well as the brakes.

Under ordinary circumstances the force needed to pump air into the cylinder will be sufficient to stop the train, especially as the back-pressure, tending to resist the motion of the air-pump piston, rapidly becomes greater and greater until, when this back-pressure and the momentum of the train balance each other the train halts.

What I claim is- 1. In a locomotive, the combination of a boiler, an air-chamber located in said boiler, a compressing air-pump, a pipe connecting said air-chamber with said pump, a pair of wheels pressing against the peripheries of two opposite driving-wheels, a shaft provided with a crank and connecting the wheels of said pair, and a connecting-rod connecting said crank to the piston-rod of said pump, substantially as and for the purpose specified hereinbefore.

2. In a locomotive, the combination of a boiler, an air-chamber located in said boiler, a compressing air-pump, brake-blocks geared to a piston, a cylinder containing said piston, a pipe connecting said cylinder with said airchamber, a pair of wheels pressing upon the peripheries of a pair of driving-wheels of the locomotive, a shaft provided with a crank, and connecting wheels which press against the said driving-wheels, and a piston-rod connecting the said crank with the piston-rod of said pump, substantially as and for the purpose set forth and described in the annexed specification and drawings.

3. In a locomotive, the combination of a boiler, pipes passing through its entire length from the furnace to the draft-chamber, a par tition dividing the said boiler into two parts, one of which is the boiler proper, and theother an air-compartment, a steam air-pump, and a pipe connecting said pump with said air-chamber, substantially as and for the purpose set forth.

4. In a locomotive, the combination of a boiler divided into an air-chamber and a water-chamber, a steam air-pump, pipes connecting said pump with said water and air chambers, respectively, brake blocks pressing against the peripheries of the driving-wheels of the locomotive and geared to a piston, a cylinder containing said piston, and a pipe connecting said cylinder with said air-chamber, substantially as and for the purpose set forth.

5. In a locomotive, the combination of a chamber containing compressed air, a cylinder, a pipe connecting said cylinder and said chamber, a piston in said cylinder, gearing connected with the driving-wheels, and a lever connecting said gearing with said piston, and said gearing also being connected with an aircompressing pump, which in turn is provided with a pipe which connects with the said chamber, substantially as and for the purpose described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this th day of September, 1885.

WILLIAM H. CLARKE.

Witnesses:

EDWARD P. THOMPSON, THEODORE D. R1011.

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