US415519A - Governor for fluid compressors or pumps - Google Patents

Description

(No Model.) I

F. LANSBERG. GUVBRNOR POR FLUID GOMPRESSORS 0R PUMPS.

Patented Nov. 19, 1889.

N. PETERS. Phntolllhugnpher. Wnhngon. IILCV UNITED STATES PATENT OEEICE.

FRANK LANSBERG, OF ST. LOUIS, MISSOURI, ASSIGNOR TO THE LANSBIERG BRAKE COMPANY, OF EAST ST. LOUIS, ILLINOIS.

GOVERNOR FOR FLUID COMPRESSORS OR PUMPS.

SPECIFICATION forming part of Letters Patent No. 415,519, dated November 19, 1889.

Application led April 29, 1889. Serial No. 308,937. (No model.)

' To all 'wh/0712, t ntf/.y concern:

Be it known that I, FRANK LANSBERG, of the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Governors for Fluid Compressors or Pumps, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification, and which is a vertical section.

My invention relates to the construction of a valve for air-brakes wherein the supply of steam to work the air-pump is automatically cut oit when the air has reached a certain pressure.

Referring to the drawing, l represents the inlet-pipe of the cut-oit (or the pipe from the boiler) and 2 the outlet, (or the pipe to the pump.)

3 represents the valve through which the steam passes.

4 represents the air-inlet of the cut-off with which the train pipe, or the pipe from the pump, operated by means ot' the steam passing through the ports l and 2, communicates.

\Vithin the housing 5 is a valve 6, with downwardly-extending wings 7, which is secured to an upwardly-projecting valve-stem 6, which latter projects loosely through a valve 8, having a small port 9, and terminates at its upper end under a valve 3, opening downwardly and adapted to be closed by the opening of the valve 6. Secured to or made integral with the valves 3 and 8 is a neck or sleeve 16, and located within this sleeve, under the valve 3 and surrounding` the valve-stem and passing through the valve S and resting upon the valve 6, is a spring 19, adapted to hold the valve 3 to its scat and the v'alve 8 off of its seat against their own gravity. Located below the valve-wings 7, in a chamber l4,is a piston l0, having an upwardly-extending n eck ll and guide-wings l2., f

13 represents a blow-oft or escape valve.

The operation is as follows: The steam passes through the port l, opens the valve 3, passes out through t-he port 2, and is conveyed to and operates the pump. Then the air has reached a certain pressure in the pipe which connects with the port 4, it raises the piston l0 by entering the chamber 14 beneath the piston. This causes the neck ll to abut against the Wings 7 and raise the valve (i from its seat, which action allows free passage of the steam down through the port .9,whence it escapes past the valve 6 ria the passage 17, and leaves' theA housing through the exhaustcock 13, thus relieving a portion of the pressure above the valve 8 and rendering the latter more easily lifted. As the valve 6 moves upward, it comes in contact with the valve 8 and raises the latter from its seat,wh ile by the same pressure the valve 3 is closed and the source of steam cut olif from t-he port 2, and the steam remaining in the latter allowed free escape past the valve S. As soon as the pressure in the pipe 4c diminishes until it is less than the steam-pressure on the inlet side ot' the valve 3, the valve 3 is opened again and steam passes through to again operate the pump. Then, as soon as the air-pressure is raised again to exceed the steam-pressure, the valve 3 is closed, as already stated.

The valve 8 is not absolutely essential to the operation of the device. Its ofce is simply to relieve the valve 6 of the greater portion of the steam-pressure, and this it does by remaining on its seat while the valve 3 is open, it only allowing the pressure that can be produced through the port 9, which is slight in comparison with that to which the whole area ot' the valve 8 is subjected.

2O represents a valve by which the air-pressure may be cut oit,\vhile the operation of the valves 3, 6,and 8 will not be interfered with, so that the air can be entirely closed oft without interfering with the operation of the pump.

2l represents a screw located in the top of the cut-off, and which may be turned down against the wings 22 of the valve 3,if desired, to open thelatter,in case itshould stick. The screw 2l is preferably provided with a jamnut 23,which maybe screwed down tight upon the housing 5', t0 form a tight joint when the screw 2l is raised.

I claim as my inventionl. In a governor for air-compressors, the combination of the valves 3 and 8, connected together, and piston l0, arranged to raise said valves, the valve 8 having a port 9. for the escape of steam, substantially as and for the purpose set forth.

IOO

2. In a governor for air-compressors, the combination of the valves 3, S, and 6, piston 10, and valve 13, the Valve S having` a port 9, and thevalve 6 having' passage-wayshetween it and the housing, substantially as and for the purpose set forth.

3. In a governor for air-compressors, the combination,with the housinghaving apiston therein and the eXhaustport and ports 1 and 2, of two Valves 3 6, opening in opposite directions, located in said housing between the exhaust-port and port 1, and adapted to be operated by said piston, and a connection between said valves, substantially as set forth.

4. In a governor for air-compressors, the

combination, with the housing having,` the ports 1 and 2 and exhaust-port, and the piston 10, having neck 11, of two valves 3 6, opening in opposite directions, located in said housing between the port 1 and exhaust-port, and a valve 8, located between the Valves 3 and 6, and having the port 9 and being` secured to the valve 3, substantially as set forth.

FRANK LANSBERG.

In presence of- EDW. S. KNIGHT, THOMAS KNIGHT.

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