US1171519A - Reducing-valve. - Google Patents

Description

F. HODGKINSON.

REDUCING VALVE.

APPLICATION man IAN-30. I915.

1 1 7 1 5 1 9, Patented Feb. 15, 1916.

.J a V F-R IN VENTOR.

H18 ATTORNEY IN FACT UNITED STATES PATENT OFFICE.

FRANCIS HODGK INSON, 0F EDGEWOOD PARK, PENNSYLVANIA, ASSIGNOR TO WEST- INGHOUSE MACHINE COMPANY, A CORPORATION OF PENNSYLVANIA.

REDUCING-VALVE.

Application filed January 30, 1915.

To all whom it may concern:

Be it known that I, Fiuxcis Honouixsox, a subject of the King of Great Britain and Ireland, and a resident of Edgewood Park, in the county of Allegheny and State of Pennsylvania. have made a new and useful Invention in Reducing-Valves, of which the following is a specification.

This invention relates to reducing valves and has for an object to produce an improved valve which is simple in construction but is more effective in operation than valves now in use or known to me.

This and other objects, which will be made apparent to those skilled in the art throughout the further description of my invention, are attained by means of apparatus embodying the features herein described and illustrated in the drawings accompanying and forming a part hereof.

In the drawing I have shown a diagrammatic sectional view of a reducing valve mechanism embodying my invention.

The apparatus illustrated consists of a reducing valve 3, of the puppet or balanced type and is inclosed within a casing 4, havin; an inlet port 5 communicating with a source of high pressure fluid, and an outlet port 6 through which the fluid is delivered to the reduced pressure line or receiver. The valve stem 7 of the valve 3 is connected by means of a link 8 and a lever 9, which is fulcrumed on an oscillating rod 10. The opposite end of the lever is pivotally connected to the rod 11 of a pressure controlled piston 12. which is located within a cylinder i A spring 14 is shown located within the cylinder and so arranged as to force the piston 12 toward one end of the cylinder which is provided with a port 15 adapted to ronnnunicate with the low pressure line or receiver. 'ith this arrangement. the pres sure of the spring 14 against the piston 12 is opposed by the fluid pressure admitted to the cylinder through the port 15. and the piston will occupy different positions within the cylinder in response to variations in the pressure of the lluid delivered through the port 15 or by the valve The end of the cylinder. or that end in which the spring 14 is located, is shown provided with a port it".

Specification of Letters Patent.

Patented Feb. 15, 1916.

Serial No. 5,250.

which is adapted to communicate with the atmosphere or some region of pressure lower than that ordinarily encountered in the reduced pressure line or receiver.

The oscillating rod 10 is shown connected to an eccentric 17 and is arranged to shift the position of the fulcrum point of the lever 9 and consequently to periodically reciprocate the lever 9. \Vith this arrange ment the eccentric 17 will periodically impart an opening and closing movement to the valve 3, and the amount of the valve opening, during its reciprocations, will depend upon the position of the piston 12 in the cylinder 13, or upon the pressure in the reduced pressure line.

The weight of the valve is so proportioned with relation to the weight of the piston 12 that slight oscillations are imparted to the piston by the eccentric 17 for the purpose of overcoming the friction of a rest between it and the walls of the cylinder, and of rendering the piston more sensitive.

During operating conditions the piston 12 will shift the limits of the oscillatory motion of the valve 3 so that its effective opening will vary in inverse proportion to the pressure delivered to the piston 12 through the port 15. \Vhen the pressure delivered to the piston 12 is such that the valve reaches its seat before the eccentric rod 10 has reached the end of its throw, the piston 12 will move in opposition to the fluid pressure in the cylinder so that the rod 11 will in effect form a yielding fulcrum for the lever 9.

While I have illustrated but one embodiment of my invention, it will be apparent to those skilled in the art that various changes, modifications, substitutions, additions and omissions may be made in the apparatus illustrated without departing from the spirit and scope of my invention.

'hat I claim is:

1. In combination with a reducing valve. means responsive to the pressure delivered by the valve for actuating the valve, and means for oscillating the valve during its operation. 7

'1. In combination,a balanced valve.nleans responsive to the pressure delivered by said valve for controlling the operation of the valve, and means for periodically moving said valve toward and away from its seat.

2;). In combination, a reducing valve, an oscillating member for moving said valve toward and away from its seat, and means responsive to the fluid pressure delivered by the valve for controlling the effective opening of the valve.

4. In combination, a reducing valve, means responsive to the pressure delivered by said valve for controlling the effective opening of the valve, and a periodically reciprocating agent for imparting an oscillatory motion to said valve-and to said means.

In combination, a reducing valve, means for periodically reciprocating the valve, and

' a piston responsive to the pressure of the with relation to the Weight of the valve that oscillations are imparted to said piston by said means.

6. In combination, a reducing valve, a pressure responsive piston for controlling the operation of said valve, a lever operatively connected to said piston and said valve, and a reciprocating member on which said lever is mounted; the weight of said valve being so proportioned with respect to the weight of said lever that oscillations are imparted to both the valve and the piston by said members 7 In testimony whereof, I have hereunto subscribed my name this 21st day of January, 1915.

FRANCIS HODGKINSON.

Witnesses C. Vf M CGHEE, E. W. MCCALLISTER.

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