US1370130A - Valve - Google Patents

Description

C. W. LARNERL VALVE.

APPLICATION FILED DEC-6, 1917.

Patented Mar. 1, 1921.

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VALVE.

T 0 all whomit may concern:

Be it known that I, CHESTER W. LAB-NEH, a citizen or" the United States, residing at Cleveland, in the county of ()uyahoga and State of Ohio, have invented certain new useful Improvements in Valves. of wh ch the of convenience in the fitting, assemblage and mounting of the parts, is formed of chambered sections 5, 6 and 7, which have screw thread connection, as indicated. 7

The section 6 has a centrally apertured diaphragm or partition 8, the aperture constituting a valve-way and having its bottom wall provided with a ground seat 9. A

valve 10 is fitted to the seat and its spindle 11 is provided with adjustable weights 12 and with a bail or lifting ring'13. A plate 14 closes the section 6 and forms an inclosed space or chamber above the valve 10, which has a waste-way 15.

Section 7 is provided with superposed seats 16 and 17 to accommodate a double disk valve 18. The smaller disk 19 establishes and dis-establishes flow between ports 20 and 21, and the larger disk 22 forms with the surrounding walls a chamber 23 below the weighted or drop valve 10. Chamber 23 communicates through a port 24 with a source of pressure not shown. When the pressure in chamber 23 is reduced to .the

point for which valve 10 is weighted. the latter drops and the pressure in said chamber is discharged through the waste-way 15. At the same time the double valve 18, which has been held to its respective seats by the pressure in chamber 23. rises due to the pressure on the bottom disk 19. The result of this is that water or other fluid flowing from port 20 is discharged through the waste port 21.

It is evident that this device is operative irrespective of what the pressures at 20 and 23 may be because the ratio of areasat top and bottom of valve 18 may be varied to suit any individual case. For example, if

v Specification of Letters Patent. Pa ten-trad"Ria 1, 1921 Application filed December 6 1917. Serial No. 205,723;

' thelp ressure below the disk 19 is forty pounds per square inch and it is desired to discharge this water as soon as the pressure at some other point shall be reduced to ten pounds per square inch, itis only necessary;

to.have the'eftectivearea of the larger disk a little more than four times-the area. of the smaller disk.

The above described device is capable of many applications. However the inlet 24 may be connected with a sprinkler system at a point where a drop below a given pressure shall operateto close a main supply valve controlled by discharge of pressure from 20 to 21. Both 15 and 21 are designated waste connections because their principal function is to discharge pressure, but this they do from diiierentchambers.

It willbe obvious to those skilled in theart to which the invention relates that changes and modifications may be made without departing from the spirit and scope thereof. Hence the invention is not limited other than required by the state of the prior art.

Having described the nature and object of the invention, I claim 1. Apparatus of the character specified,

comprising- 2 pressure chamber with supply and waste connections, a valve intermediate said connectionsand adapted to be unseated in response to a predetermined reduction in pressure and having means for manual oper-' mally held to its seat by. the pressure in said chamber.

' 2QApparatus of the character specified,

comprising a pressure chamber with supply and waste connect1ons,a drop valve intermediate said connections and adapted to be unseated in response to a predetermined reduction in pressure and having means for manual operation, and an auxiliary valve for controlling fluid flow through other inlet and outlet connections with which it is provided and normally held to itsseat by the pressure in said chamber.

3. Apparatus of the. character specified, comprising a pressure chamber with supply and waste connections, a weighted. valve having a ground seat intermediate said connections and adapted to be unseated in response to a predetermined reduction in pressure, fluid supply and waste connections, and

a valve for the same including disks of different area 'WllGI'GOf the larger is exposed to the pressure in said chamber.-

4-. An apparatus of the character specified Comprising the combination of a casing having a pair of pressure chambers each having independent supply and vvaste connections, a valve chamber between said pressure chambers, an unbalanced double disk valve arranged in said valve chamber and having one disk smaller thanthe other, the latter being in said valve chamber and cooperating with the inlet of one of said pressure cham-- hers, a partition having a valve seat, and arranged in the other of said pressure chambers between its inlet and waste, and a Weighted valve for the last mentioned valve 7 seat, substantially as described.

5. Apparatus of the character specified comprising in combination a pressure chamber having supply and Waste connections, a Weighted valve intermediate said connections and adapted to be unseate'd in response to a predetermined reduction in pressure in said chamber, main fluid supply and Waste connections, and an auxiliary valve one end of Which controls the last named connections and the other end of which is exposed to the interior of said chamber, substantially as described. 7

- In testimony whereof I afiix my signature.

CHESTER W. LARNER.

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