US747468A - Valve. - Google Patents

Description

PATENTBD DEC. 22, 1903.

J. W. NETHERY.

VALVE.

`APPLIQMION FILED nov. a, 1901.

N0 MODEL.

INVENTOR. .ose/WDW e272/ UNITED STATES Patented December 22, QS.

PATENT OFFICE.

JOSEPH W. NETHERY, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE NETHERY HYDRAULIC VALVE COMPANY, OF INDIANAPOLIS, INDI- ANA, A CORPORATION OF NEW JERSEY.

VALVE.`

SPECIFICATION'Ai-orming part of Letters Patent No. 747,468, dated December 22, 1903.

' Application filed November 8, 1901. Serial No. 81,545. (No model.)

To all whom it my concern:

Be it known that I, JOSEPH W. NETHEEY, a citizenof the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certainnew and useful Improvements in Valves, of which the following is a specification.

This invention relates to that variety of valves or faucets which when opened will after a predetermined iow of fluid automatically close.

A valve embodying said invention will be rst fully described and the novel features thereof then pointed out in the claims.

Referring to the accompanying drawings, which are made a part hereof, and on which similar reference characters indicate similar parts, Figure 1 is a central vertical sectional view of a valve or faucet embodying my said invention, the main valve and the startingvalve being both shown in closed position; Fig. 2, a similar view, except that the starting-valve has been raised, the parts being shown in the positions they occupy just before the main valve starts to open; and Figs. 3 and 4, horizontal sectional views looking downwardly from the dotted lines 3 3 and 4 4, respectively, in Fig. 1.

Assuming this valve to be arranged in the ordinary way for controlling fluid, such as Wate'r, the iiuid enters from the side through the ingress-opening at 5, as indicated by the arrow at that point, and passes out throughV the main-valve seat to the egress pipe or opening 6, as indicated by the arrow at that point. The body or shell 7 of the valve contains the main-valve seat 8 and is provided with a removable cap 9. This valve is in the main preferably in the form of a cylinder. Within the chamber is the main-valve structure, con

sisting of the main valve 10, a hollow stem 11, and a piston-head 12. Said piston-head is at the opposite end of the stern from the main valve and is of larger diameter than said main valve, so that the valve and the piston-head present dierential surface areas to the pressure of the incoming fluid. The upper edge of the piston-head extends to above the ingress-opening, and thus divides the cylindrical chamber into two compartments,

l one below the piston-head, into which the incoming fluid immediatelydischarges, and the other above said piston-head, to which ingress is had'by a small opening, as by the perforation p. Said piston-head is shown as cupshaped in form, the cup portion being interiorly screw-threaded, with a gasket 13 in the bottom ofthe cup, where it is held by an annular screw-threaded follower' 14.. Said gasket forms a seat for the starting-valve 15, which is formed or carried on the stem 16, which extends to the outside of the main- Valve structure and also extends down into the tubular opening through the main-valve stem 11, and preferably carries upon its lower end a star-shaped guide 17, by which it is guided it its movements, while the passage of fluid is not prevented. Upon the upper end of said stem isa knob or button 18, by means of which the starting-valve is manipulated by the operator. This starting-valve 15 is disk-like in form and its exposed surface is upward when said valve is closed, so that g is guided in opening by the wings 20, as

shown, andas will be readily understood.

The operation of my improved valve is as follows: The main valve being closed, the starting-valve 15 is raised from-the position shown in Fig. 1 to the position shown in Fig. 2. This Vleaves a free passage for the duid which has accumulated in the compartment above the piston-head out through the discharge-way lformed by the orifice in the tubular valve-stem 11, and thus relieves the pressure in said compartment. Thepressure of the incoming fluid (being greater upon the piston-head than upon the main valve by reason of its larger area) forces the main-valve structure up, thus opening the main valve and permitting the incoming fluid to iiow through. As the main-valve structure reaches its uppermost position the gasket 13 in the IOO piston-head 12, which forms the seat for the starting-valve l5, comes against the startingvalve, thus seating it and stopping the flow through the opening in the valve-stem ll. The small quantity of liuid which is entering through the perforation p presently lls the compartment of the chamber-above the pistonhead, equalizing the pressure on the two sides of the piston-head and permitting the pressure on the main valve l0 to force it down onto its seat. Said main-valve structure is accompanied in this movement by the starting-valve, which is kept in contact with its seat on said main-valve structure, as above stated. The time which this last-named operation occupies, and consequently the quantity of Huid which shall be discharged a-t one operation of the valve, is determined by adjusting the effective size of the perforation p, which may be done by means of the slitted screw 2l, which is placed therein.

Having thus fully described my said invention, whatI claim as new, and desire to secure by Letters Patent, is

l. The combination, in a piston-valve, of a shell or body containing a cylindrical chamber and having a main-valve seat at its discharge end and also having an ingress-opening at one side between the valve-seat and the opposite end, a main-Valve structure situated in said chamber composed of a hollow valvestem with the main valve upon one end thereof and a piston head upon the other, said piston-head extending to above the ingress-opening and dividing the chamber into two compartments, a passage from the ingress to the upper compartment, a startingvalve arranged in the upper compartment and having its valve-seat on the upper surface of lthe piston-head, a valve-stem carrying said starting-valve and extending through the head of the main shell or body to the outside where it can be reached by the operator and also extending down through said valve into the orifice in the main-valve stem whereby it is guided, substantially as shown and described.

2. The combination, in a piston-valve, of a main-valve structure having an upper and a lower compartment, a central discharge-ori lice leading from the upper compartment of the Valve-chamber down through to a point adjacent to the main egress-opening, and a starting-valve stem extending up through the head of the main shell or body to the outside, and a starting-valve carried thereby and situated in said upper compartment and adapted to close said orifice, said starting-valve being in the form of a disk at its lower or operative end which presents a surface to the action 0E the uid in said compartment when filled, whereby the pressure of such fluid causes said starting-valve to remain seated until forcibly opened, substantially as shown and described.

3. The combination, in a piston-valve, the main-valve structure wherein contains a discharge-critica leading from the upper compartment down through said structure to a point adjacent to the main egress-opening, of an auxiliary or starting valve situated in said upper compartment, and a valve-stem carrying said starting-valve, the lower end of said stem passing down into the dischargeorifice in the main-valve structure where it is provided with a guide for controlling its movement, and the upper end passing up through a suitable stuffing-box to the outside where it can be reached for operating said starting-valve, substantially as set forth.

In witness whereof I have hereunto set my hand and seal, at Indianapolis, Indiana, this 10th day of October, A. D. 1901.

JOSEPH W. NETHERY.

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