USRE20576E

USRE20576E - Flush valve

Info

Publication number: USRE20576E
Authority: US
Publication date: 1937-12-07

Description

Dec. 7, 1937. w. 1- SL'OAN 20576 FLUSH VALVE.

Original Filed Feb. 5, 1951 ll carried by the main valve.

Reissued Dec. 7, 1937 UNITED STATES PATENT OFFICE Original No. 2,038,135, dated April 21, 1936, Serial No. 513,530, February 5, 1931. Application for reissue April 15, 1937, Serial No. 137,126

9 Claims.

This invention relates to flush valves and has for its object to provide a new and improved device of this description. The invention has as a further object to provide a flush valve with means for adjusting it so as to vary the amount of water passing therethrough at any given operation, the adjustment being made from the outside and the variation in the quantity of water being due to variations in travel of the main valve, and particularly to provide such an adjustment with a non-hold open flush valve. Other objects are more particularly pointed out in the accompanying description.

Referring now to the drawing, Fig. l is a vertical sectional view through one form of valve embodying the invention;

Fig.2 is a sectional view taken on line 22 of Fig. 1;

Fig. 3 is a sectional view with parts omitted showing the adjustable actuating device in a diflerent position from that shown in Fig. 1; and

Fig.4 is a sectional view taken on line 4-4 of Fig. 3.

Like numerals refer to like parts throughout the several figures.

In the drawing, for purposes of illustration, I have shown a diaphragm flush valve, that is a flush valve where the main valve is connected with the diaphragm, but the invention is equally applicable to other forms of flush valves, such as piston flush valves. In the construction shown the valve is provided with a casing made up of the sections l and la, having an inlet 2 and an outlet 3. Within the casing is a main valve 4 which in this instance is connected with the diaphragm 5, the main valve seating on the seat 6.

The main valve divides the interior of the easing into two chambers, the chamber 1 and the chamber 8. A by-pass 9, preferably of small cross sectional area, connects the two chambers. The main valve is provided with a passageway Ill which connects the chamber 8 with the discharge 3 and which is controlled by the auxiliary valve This auxiliary valve is provided with a stem consisting of the telescoping members l2 and I3. The auxiliary valve is opened by moving the stem laterally. In the construction herein shown this is accomplishedby means of an actuating device M which carries an adjustable actuating member or plunger IS. The actuating device (4 is moved laterally by a handle I 6. This handle has an enlargement I! which engages an enlargement l8 on the actuating device. When the handle is moved in any direction the actuating device is pushed inwardly.

A retracting spring l9 moves the parts to their initial position when the handle is released. When the handle is moved and the actuating device l4 moved inwardly, the adjustable actuating member l engages the member l3 of the valve 5 stem and moves. it laterally, thus opening the auxilary valve II. The adjustable actuating member 15 is adjustable so that the length of the part thereof which'projects about the actuating device may be varied. Any suitable means 10 for adjusting this member may be used, and I prefer to arrange some means by which it is adjusted from the exterior of the valve. In the particular construction illustrated, the adjustable actuating member or plunger I5 is shown as an eccentric fastened to the actuating device I l. The end of the actuating device I4 is provided with a notch for the insertion of a tool by means of which it may be rotated. This end with the notch is accessible from the exterior of the valve by simply removing the cap 21. It will be seen that when the actuating device I4 is rotated the position of the eccentric or plunger will be varied so as to shift the vertical position of the plunger, that is to vary the length thereof which projects above the lower end of the stem member I3. Figs. 1 and 2, for example, show the parts in the adjusted position where the maximum length of the adjustable actuatingmember 15 projects above the actuating device l4. Figs. 3 and 4 show the parts adjusted so that a lesser length of the adjustable actuating member projects above the actuating device. The use and operation of my invention are as follows: 1

When the parts are in the position shown in Fig. l the valve is closed. When it is desired to operate the valve the handle IE is moved in any direction. This causes the actuating device It to be moved inwardly and the actuating mem- 40 ber or plunger l5 thereon strikes the member l3 of the valve stem of the valve II and moves it laterally. This opens the auxiliary valve. Water then passes from the chamber 8 out through the passageway l0 and the outlet 3. The pressure of the water in chamber 1 then causes the main valve to be lifted'and the water passes from the inlet 2 through the main valve and the seat -6 and out through the outlet 3.

When themain valve is lifted, so that the part l3 of the stem of the auxiliary valve rises above the top of the adjustable actuating member or plunger l5, this member returns to its vertical position and the auxiliary valve is closed. Water passing through the by-pass 9 then enters the chamber 8 and the pressure will equalize so that the main valve descends. If, now, the handle has been held in its operative position, the member l3 strikes the top of the adjustable actuating member or plunger 15 and slides along the member [2, thus permitting the main valve to close.

It will be seen that the auxiliary valve is held open as long as the actuating member or p1unger engages the member I3. After this actuating member is adjusted so as toshift its vertical position so that the maximum amount projects above the lower end of the auxiliary valve stem, the auxiliary valve will be held open the maximum length of time. When this actuating member or plunger is adjusted to project a shorter length or distance above the lower end of the auxiliary valve stem, the auxiliary valve will be held open a shorter time. The longer the auxiliary valve is held open the greater will be the distance of the upward travel of the main valve and the greater will be the amount of water passing through the valve, and as the time it is held open is decreased the upward travel of the main valve decreases, thus decreasing the amount of water passing through the valve.

It will be seen that by this arrangement the parts may be adjusted from the exterior of the valve so as to vary the amount of water passing through the valve at any given operation, that this adjustment varies the travel of the main valve, and that its action is effective when the actuating handle I6 is held in its operative position, that is with the non-hold open flush valve construction.

Some means is provided for preventing the actuating device Hi from being accidentally turned by the handle l6. This is accomplished by means of a. packing gland 22 which is tightened sufiiciently to compress the packing to prevent the accidental rotation of the actuating device I4.

I claim:

1. A flush valve comprising a casing provided with an inlet and an outlet, a main valve therein dividing the casing into two chambers, an upper chamber and a lower chamber, said main valve being provided with a passageway which connects the upper chamber with the outlet, an

, auxiliary valve carried by the main valve and controlling said passageway therethrough, a stem for said auxiliary valve, a rod mounted in proximity to the end of said stem, means for moving said rod, an actuating member connected with said rod intermediate its ends and adapted to engage said stem when the rod is moved so as to open the auxiliary valve and hold it open a predetermined length of time, and means for adjusting the position of said actuating member so as to vary the length of time it engages said stem to hold said auxiliary valve open.

2. A flush valve comprising a casing provided with an inlet and an outlet, a main valve therein dividing the casing into two chambers, an upper chamber and a lower chamber, said main valve being provided with a passageway which connects the upper chamber with the outlet, an auxiliary valve carried by the main valve and controlling said passageway therethrough, a stem for said auxiliary valve, a rod mounted in proximity to the end of said stem, means including a handle for moving said rod, an actuating member connected with said rod and adapted to engage said stem when the rod is moved so as to open the auxiliary valve and hold it open a.

predetermined length of time, and means ac:- cessible while the handle is in its operative position for adjusting the position of said actuating member so as to vary the length of time it engages said stem to hold said auxiliary valve open, and means for preventing the auxiliary valve from being held open when said actuating member is held in its operative position.

3. A flush valve comprising a casing having an inlet and an outlet, a main valve dividing the easing into two chambers, an upper chamber and a lower chamber, said main valve having a passageway therethrough connecting the upper chamber with the outlet, an auxiliary valve carried upon said main valve and controlling said passageway, an actuating mechanism including a handle movably mounted on said casing for opening said auxiliary valve, and means accessible from the opposite side of the casing on which said handle is mounted for adjusting said actuating mechanism so as to vary the length of time the auxiliary valve is held open in any given cycle of operation of the flush valve.

4. A flush valve comprising a casing having an inlet and an outlet, a main valve dividing the easing into two chambers, an upper chamber and a lower chamber, said main valve having a passageway therethrough connecting the upper chamber with the outlet, an auxiliary valve carried upon said main valve and controlling said passageway, an actuating mechanism including a handle movably mounted on said casing for opening said auxiliary valve, and means accessible from the opposite side of the casing on which said handle is mounted for adjusting said actuating mechanism so as to vary the length of time the auxiliary valve is held open in any given cycle of operation of the flush valve, and means for insuring the closing of said auxiliary valve when the actuating mechanism is held in its operative position so as to insure the closing of the main valve.

5. A flush valve comprising a casing having an inlet and an outlet, a main valve dividing the casing into two chambers, an upper chamber and a lower chamber, said main valve having a pas- 7 5 sageway therethrough connecting the upper chamber with the outlet, an auxiliary valve carried upon said main valve and controlling said passageway, an actuating mechanism for opening said auxiliary valve, said actuating mechanism comprising a rod rockably mounted in the casing and extending across said outlet and having bearings on opposite sides of thecasing, means for moving the rod longitudinally, an actuating member carried by said rod between its ends which engages said stem when the rod is moved longitudinally, said actuating member projecting at varying distances from the rod at different points around the rod, and means for rotating the rod to vary the length of the portion of the actuating member that engages said stem.

6. A flush valve comprising a casing having an inlet and an outlet, a main valve dividing the casing into two chambers, an upper chamber and a lower chamber, said main valve having a passageway therethrough connecting the upper chamber with the outlet, an auxiliary valve carried upon said main valve and controlling said passageway, an actuating mechanism for opening said auxiliary valve, said actuating mechanism comprising a rod rockably mounted in the casing, a handle for moving the rod longitudinally, an actuating member carried by said rod which engages said stem when the rod is moved longitudinally, said actuating member projecting at 1 varying distances from the rod at difierent points around the rod, and means for rotating the rod to vary the length or the portion of the actuating member that engages said stem, said means accessible from the exterior of the casing while the handle is in its operative position.

7. A flush valve comprising a casing provided with an inlet and an outlet; a main valve therein dividing the casing into two chambers, an upper chamber and a lower chamber; said main valve being provided with a passageway which connects the upper chamber with the outlet; an auxiliary valve carried by the main valve and controlling said passageway therethrough; a stem for said auxiliary valve; a handle movably mounted in a side wall of the casing; an actuating device mounted between the handle and the end of said stem and adapted to be moved by said handle to engage said stem when the rod is moved so as to open the auxiliary valve and hold it open a predetermined length of time; and means accessible while the handle is in its operative position for adjusting the position of said actuating member so as to vary the length of time it engages said stem to hold said auxiliary valve open.

8. A flush valve comprising a casing having an inlet and an outlet; a main valve dividing the casing into two chambers, an upper chamber and a lower chamber; said main valve having a passageway therethrough connecting the upper chamber with the outlet; an auxiliary valve carried upon said main valve having a stem and controlling said passageway; an actuating mechanism mounted in said casing for reciprocal movement to open said auxiliary valve by engaging said stem, and for rotative movement about a point eccentric with respect to the portion of the actuating mechanism which engages the stem; a handle for moving the actuating mechanism in its said reciprocal movement; and adjustment means accessible from the exterior of the casing while the handle is in its operative position for imparting said rotative movement to vary the length of the portion of the stem engaged by the actuating member.

9. In a flush valve including a casing provided with an inlet opening and an outlet opening; a main valve in said casing reciprocable between a definite closed position and an indefinite open position to control communication between said openings; means including an auxiliary valve carried by said main valve for causing said main valve to leave said closed position when the auxiliary valve is opened and travel toward a maximum open position until said auxiliary valve is closed, and for causing said main valve to return to closed position responsive to the closure of said auxiliary valve; a control device mounted in said casing and actuatable from the outside to control the opening of said auxiliary valve; the reclosing of said auxiliary valve being responsive to the travel of the main valve away from closed position; interlinkage mechanism interposed between said control device and said auxiliary valve through which the said control over the auxiliary valve is exercised; and means enabling adjustment of the interlinkage mechanism to be made, while all the parts enumerated position before the auxiliary valve recloses.

WILLIAM E. SLOAN.