US1597456A - Cut-out valve - Google Patents

Description

Fede ated Aug. 24, 1926.

UNITE STATES EVERETT S. MINARD, 0F FRESNQCALIFORNIA.

our-our VALVE.

Application filed August 3, 1925. Serial No. 47,713.

My invention relates to a cutout Valve, and more particularly to that form which is used to cut off a flow of fluid in which there is great pressure in the intake pipe with which the cutout is connected which is transmitted to the interior of the valve.

Qbjects I have attained is the construction of a cutout valve of the character de scribed, which is easy to operate, quick to act, and which when opened gives an un0bstructed passage for fluid between the intake and outlet openings. 1

I accomplish these and other objects hereinafter set forth by means of the device hereinafter described and illustrated on the accompanying drawing, in which Figure 1 shows a sectional view of the valve, illustrating the throttle mechanism. Figure 2 is a fractional, sectional view of the housing and showing the lever for turning the t-hrot tle and means for making fluid proof the opening through which the throttle passes. Figure 3 is a sectional view partly in plan of the device along the broken line 3-3 in Figure 1. Figure 4 is a top view of the diaphragm.

In said drawing 7 is the valve body, or shell, having an intake opening 8 and an outlet opening 9. This shell is preferably made tubular and is closed at both ends. The wall surrounding these openings is shown as threaded on the outside, although it can be threaded on either the outside or the inside as desired. The inside of the shell forms a closed chamber with the exception of the intake and outlet openings. The throttle is shown as 10, and consists of a cylinder or tube 11, which has approximately the same bore as the outlet and inlet openings. The ends of tube 11 are curved to conform to the inside periphery of the valve body or shell, but it should fit loosely, so that the fluid can readily flow between the ends of the cylinder or the tube 11 and the shell 7 To the tube 11 I- have attached a throttle shaft 21, which shaft extends through the shell 7 and has attached on the outside thereof a handle 20, said shaft handle and tube 11 being constructed and assembled so that by turning handle 20, the tube 11 can be turned within the housing so that its open ends register with the intake and outlet openings, or it can be turned to other positions.

For the purpose of making air tight the bearing through which shaft 21 extends, I

have attached a rubber disc 22 to the shaft, so that the portion of the face near the periphery thereof will rest against the inside wall of the shell, around the opening through which the shaft passes,'as shown in Figure 2, said rubber disc acting as a check valve by the pressure of the fluid against the disc and the disc against the wall of the shell. I

On the outside of tube 11 I have formed aflat surface and a, boss on saidflat surface for the purpose of attaching the diaphragm assembly. This diaphragm assembly is the active agent in obstructing or shutting off the flow of the fluid through the outlet opening. The diaphragm assembly consists of a ring 14, which is curved on the top to conform to the inside wall of the shell 7 surrounding the outlet opening and makes a water tight fit. This is shown in Figure 1. The under side 14 of ring 14 is flat. I have formed a spring diaphragm 13, a top view of which is shown in Figure 4, the outside edge of the face being ground to a water tight fit with the under face 14 of ring 14. For the purpose of holding ring 14 and diaphragm 15 in position to make a fluid tight fit, Ihave formed a flanged member 16, the flange being annular and of such size that it fits snugly within the opening in ring 14. Said flanged member has a depending annular extension 16 which extends downward around the boss 12. The diaphragm 13 has a hole in the center and fits over the boss and is clamped in position thereon under ring 14 by the flanged member 16, the assembly being held together by a screw 17. A ring 23 around the throttle shaft is adapted to abut one face of the rubber disc 22.

In operating this valve, it Wlll be noted that if a pressure of fluid is introduced into the shell or throttle valve body through in take 8, the fluid pressure is not against the outside of the tube 11 only, because the fluid can pass between the ends of the cylinder and the walls of the valve body. The pressure on the inside and top oftube 11 will equalize the pressure on other portions thereof, and the only pressure against the fitting part of the valve will be the pressure onthe under side of ring 14, and the diaphragm 13.

By the reduction of the pressure as herein described, the throttle of the valve can be turned more easily than otherwise.

This type of valve is especially valuable in connection With fire department apparat us, and other apparatus Where the pipes have great pressure therein; Insome in'' stances said pressure is 200 lbs. per square inch and in the form of valves non in use" the friction created by such pressure makes the movement of the throttle a laborious act. v,

Having described my invention, I claim a's-n'evv' and ask for Letters Patent 1". In" a cutout valve the combination of a cylindrical chamber having an inlet 'aiid outlet opening between the ends oi the shell, a throttle composed of a tube adapted to fit loosely Within the cylindrical shell and pivote'd therein in a position which permits the throttle to be swung so that the openi'n'gs'in thetuberegi'ster with th'einta'ke and outletopenings, a closure for the outlet opening;eensistingef a ring adapted to'surreun'd the outlet opening, and positioned on tile inside of the shel'l, and fitted therein, a diaphragm fitted on the inner' side' of the ring, and reta'ini'i'i'g means adapted to clamp the d'i'aphragi'n to the" outside portion of the" tube. I

21 In a cutout valve the" combination of a chamber'havingan outlet and an inlet opening, a pivoted member within the shell operable by means extending through the shell, an" annular ring adapted to fit around the" outlet opening against the inside Wall of the shell to forin'a fiiii'd tight fit, retaining means forsaid ring attached to the pivoted member and adapted to hold the annular ring and pivoted member in constant rela-' tion and a diaphragm clamped to" tl1epivoted member adapted to press against the under side'of saidan'nular ring, and thereby forming a fluid tight fit.

3, In a cutout valve the combination of ashell enclosing a chamber, aninlet opening and an outlet opening in said chamber, a pivoted member Within the shell adapted to be positioned so there will be an unobstruet'ed passage between the intake opening and the outlet opening, and means for cutting oft the flow from the interior of the chamber to the outlet opening consisting of an annular ring fitted around the outlet opening sothat the upper surface of the ring conforms to the Wallsurface of the chamber adjacent to the ring, adiaphragm attached to the pivoted; member and posi tioned so that an annular portion of the face of the diaphragm\Vill'bear against the under face of the annular ring, retaining meansto hold tli'e pivoted meinber, diaphragm and annular ring in" a constant relation to each other. i

l. In a cutout valve, the con'ibination or an enclosed chamber, having inlet and outlet openings, :1 pivoted member within the chamber adapted to be moved so that there will be anun'obstr icted passage bet-Ween the outlet and intake openings, means for moving said pivoted member, and means for closing the outlet opefii' Qgiv consisting of an annular ring fitted on its upper surface to the inside Wall of the shell around the outlet opening and surfaced to a plane on theiunder' side, a diaphragm having an annulaf' lace adapted to" fit againstthe plane surface on said annular ring, retainhig means for holding the annular ring and diaphragm face in saith relation to each other, and adapted to be moved Wit-h said pivoted membel" sot-hat the outlet opening can be closed or opened at will.

.EVERETT s. MIN-ARE.-

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