US1537413A - Valve - Google Patents

Description

May 12, 1925'. 1,537,413

' c. w. DAKE 'VALVE Filed Sept. 2, 1920 I fizve n60?- Z/a i mp3s C'iamZepf Z1 flake Patented May 12, 1925.

UNITED STATES PATENT OFFICE.

CHARLES W. IIAKE, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE PYLE-NATIONAL COM- PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW JERSEY.

VALVE.

Application filed September 2, 1920. Serial No. 407,620. To all whom it may concern: slem C. It is adapted to be screwed in the Be it known that I, CHARLES IV. DAKE,

a citizen of the United States, residing at.

Chieago,in the county of Cook and State of Illinois, have lnvented a certain new and useful Improvement in Valves, of which the following is a specification.

This invention relates to a steam valve and particularly to a valve of the type which is adaptable for use with a steam turbine or motor generator set. One of the objects-of this invention is to produce a valve which is more nearly balanced than is generally the case with valves of this type.

" Other objects will appear from time'to-time throughout the speci cation and claims.

The invention is illustrated in the accompanying drawings, wherein Fig. 1 illustrates the valve as positioned in a steam turbine. The associated parts are diagrammatically illustrated only so far as necessary;

Fig. 2 is a horizontal section 2-2 of Fig. 1. v

Like'parts are described by like characters throughout.

A is a valve casin having the central bore A. The two in ct ports A A and the two outlet ports A A which are in communication with the annular groove A about the valve casing. From these outlet ports steam is discharged through the port A toward the nozzle of the turbine. Bis

along the line a bushing in the lower and narrower part of the valve casing, and-is relatively long to give a long bearing for the valve operating stem C and therefore diminishes the escape of steam. The bushing B with an inclined upper surface B and is smaller than the cavity within which it rests. Thus it furnishes means whereby any sediment in the steam can be carried away from the valve stem and deposited in the pocket about it so as to minimize valve operating stem. C is the valve piston set within the valve casing and provided with the annular grooves C C 'by means of which a water packing is established. C is'a perforation in the part C through which steam may pass. C is an extension from the valve piston and is provided with the lateral enlargement C against which the spring D -bears. E is a cap or plug enclosing the spring D and the upper end of the valve is provided valve casing and to compress the spring in order to adjust the setting of the valve. The valve stem 0 is made of'sufiicient length that when the valve is properly adjusted, its upper end may be even with the upper surface of the cap E which is perforated and through which the valve stem is adapted to penetrate. The valve assembly is fitted in place in the turbine and is there secured by means of the plug F. The plug F encloses a spring G which is secured within it and bears upon the top of the cap E, thus controlling the the valve parts in a spring secured relation. II is a lever in contact with the lower end of the valve operating stem. The lever H is connected with a governor not here shown, the detailsof which form no part of this invention. The valve is operated in response to the governor which causes the lever H to rise and thus move the valve upward and cuts off the discharge port of the valve, and thus either limits or entirelycuts off the steam supply.

The valve stem 0 which as above suggested cap or plug so as to hold furnishes a very satisfactory index whereby the operator can tell when the valve inside the casing is properly adjusted, that is when its valve stem is flush, the valve is in the proper place, and is of course held in that place against thepressure of the spring D y the governor. For the purpose of illustrating this feature, I have applieda very diagrammatic governor adjustment, the idea being that the rock shaft K is rotated by the governor, and it has keyed thereon a quadrant K, slotted as at K. The arm H is rotatably mounted on; the shaft K and is adapted to be locked to the quadrant K by means of a hand screw and wheel K When the operator is going to adjust the valve so that the'governor will hold it at an open position-for normal running, he will releasethe-hand wheel K and with the governor-in, its normal position will'rotate the leverH in or out, as thecase may be, until the valve stem 0* is flush with the cap E. He will then tighten the parts together,-:-knowing that he has set the zero of the governor at such point that the valve will be wide open.

I claim:

1. A valve comprising a valve casing, a

spring controlled plug, a valve operating stem, and a valve piston suspended between said plug and said stem and in contact with said stem.

2. A valve comprising a valve casing, a spring controlled plug a valve operating stem, and a valve piston suspended between said plug and said stem and in contact with said stem and adapted to be operated therement, a hollow plug surrounding said ex- .tension and in contact with said enlargement a spring within said plug and adapted to bear against said plug and said enlargement, a valve operating stem in contact with but separate from said valve piston.

-5. A valve comprising a'valve casing a valve piston therein an upper extension from said piston having a lateral enlargement, a hollow plug surrounding said extension in contact with said enlargement a spring within said plug and adapted to bear against said plug and said enlargement a valve operating stem in contact with but separate from said valve piston and adapted to move said piston in opposition'to said spring.

valve piston within said casing an extension from said valve piston lying within said plug, a lateral enlargement on said exten- S1011 in contact with the interior of said plug, a spring within said plug in contact at one end with said plug and at the other with said enlargement a hole in said plug through which said extension penetrates "and b means of which the position of saidvalve ody may be observed.

8 A steam valve comprising a casing having inlet and outlet ports, one end of said casing being closed a vzdve piston in said casing and adapted to close said outlet ports, said valve piston perforated to permit the passage of steam therethrough, and a valve operating stem in contact with but unconnected with said valve piston. v

9. A. steam valve comprising a casing having inlet and outlet ports one end of said casing being closed a valve piston in said casing and adapted to close said outlet ports said valve piston perforated to permit the passage of steam therethrough a valve operating stem in contact with but separate from said valve piston and a bushing in the lower end of said valve casing surrounding said stem the surface on the upper end of said bushing inclined away from said stem.

10. A steam valve comprising a casing having inlet and outlet ports one end of said casing being closed a valve piston in said casing and adapted to close said outlet ports said valve piston perforated to permit the passage of steam therethrough a valve operating stem in contact with, but separate from said valve piston anda bushing in the lower end of said valve casing surrounding said stem, the surface on the upper end of said bushing inclined away.

from said stem and said end being smaller than the interior of the valve casing.

11. In a fluid engine a governor valve, a

socket enclosing the valve an indicator associated with the valve, and visible from without the socket for indicating the position of the valve, and an adjustable governing 1 connection for the valve, where the operator may with reference to the indicator set the valve at the" initial position.

12. In a fluid engine, a valve casing, a valve reciprocating therein, an adjustable governing connection adapted to exert a governing impulse thereagainst, the stem of the valve being adapted to project through the wall of the casing and serve as an indication of the position of said valve.

13. In a fluid engine, a valve casing, a valve reciprocating therein, an adjustable governing connection for the valve, the stem of the valve being adapted to project through the wall of the casing and serve as an indication of the position of said valve.

Signed at Chicago county of Cook and State of Illinois, this30th day of August,

- oH RLEs'w. DAKE.

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