US2079329A - Water flushing device - Google Patents

Description

WATER FLUSHING DEVICE Filed July 22, 1927 2 Sheets-Sheet l 33 1937- A. w. MOSELEY WATER FLUSHING DEVICE Filed July 22, 1927 2 Sheets-Shee t 2 Y Patented May 4, 193'? acrea e WATERFLUSHDIG nnvron Alexander W. Moseley, Evanston, BL, assignor to Sloan Valve Company, Chicago, Ill, a corporation of Illinois Application .liuly 22, 1927, Serial No. 207,622

6 Claims.

closet to the source of water supply is prevented.

Under certain conditions it may sometimes happen, when flush valves are used for flushing water closets that water from the flush valve brings about a condition in the pipe leading to the closet which may cause the contaminated water to flow back from the bowl through the flush valve into the water system, so as to contaminate the same. The present invention has as one of its objects to prevent this backward or reverse ilow of the water and thus prevent the contamination of the water system.

The invention has as a further object to pro- 20 vide a flushing device which will prevent objectionable noise.

The invention has as a further object to provide a flushing device which will secure a proper refilling of the bowl.

The invention has further objects which are more particularly pointed out in the accompanying description.-

Referring now to the drawings, Fig. 1 is a view showing one form of flushing device embodying the invention.

Fig. 2 is an enlarged sectional view through the flush valve shown in Fig. 1.

s Fig. 3 is an enlarged sectional view taken on the line 33 of Fig. 2.

' 35 Fig. 4 is an enlarged sectional view taken on the line 3-4 of Fig. 3.

Fig. 5 is a view showing a modified construction of device.

Fig. 6 is a vertical sectional view through the device shown in Fig. 5. g

Like numerals refer to like parts throughout the several figures.

Referring now to the drawings, I have shown a flushing device consisting of a flush valve I connected by a pipe 2 with a source of water supply, said valve being connected by a pipe 3 with a water closet bowl 6. The flush valve i is arranged so that when it is operated water passes from the source of water supply through the pipe 2 and the valve I and is discharged by the pipe 3 into the bowl l. It sometimes happens that the water in the pipe 3 causes a reverse flow in this pipe, due to the siphon action and thus contaminated water from the bowl is drawn up through the flush valve andv enters the water system through the pipe 2. I have illustrated certain means for preventing this result.

Referring now to Fig. 2, it will be seen that the flush valve i has an inlet 5 which is connected by the pipe 2 with the source of water supply. Any desired flush valve may be used and the particular flush valve illustrated in the drawings is provided with a main valve 6, which is connected with a diaphragm l dividing the valve into the lower chamber 8 and the upper chamber 9. This main valve seats on the upper end H] of the cylinder II. There is an opening 12 through the main valve which is controlled by an auxiliary valve l3, shown as a tilting valve, and which is provided with an actuating device consisting oi the members M and I5, which are free to slide relatively for a portion of their length, and the actuating part l6, which engages the lower member so as to move the two members to open the auxiliary valve. The actuating part 16 is moved by a handle I! having an enlarged end 18 enclosed in the enclosing device l9, which enlarged end engages the end 20 of the actuating part IS. A retracting spring 2| moves the actuating part and handle to their initial positions when the handle is released. A by-pass is arranged between the chambers 8 and 9, so that water may flow from one to the other in order to cause the main valve to be seated. This by-pass is shown as a passageway 22 leading from the chamber 5 to the chamber 9. When the auxiliary valve [3 is tilted, the Water in chamber 9 is .discharged and the pressure in chamber 8 lifts the diaphragm I in the main valve so as to permit the water to pass from the pipe 2 into the discharge pipe 3, and thence to the bowl. When the valve I3 closes water then passes from the chamber 8 through the by-pass 22 up into chamber 9, and the main valve is then closed.

- It sometimes happens that the contaminated water from the bowl will pass up through the pipe 3 and into the cylinder II and past the auxiliary valve l3, and then through the bypass 22 into the pipe 2 so as to contaminate the water supply. In order to prevent this, I provide a siphon breaking device 23 which may be located in the valve body itself or in the discharge pipe 3, and which is arranged to prevent water remaining in the pipe 3 after the valve is flushed. This device is also arranged to prevent fluid from escaping therethrough either when water is being device consists of a casing having an air passageway 24 therethrough, the air passageway being connected to the atmosphere outside of .the pipe 3 by any suitable connection. This connection, as shown, is made by a screw 25, having a passageway 26 extending therethrough and communicating with the passageway 24. The screw 26 has a threaded engagement with the casing of the siphon breaker and a washer 21 between the casing and the inner wall of the pipe 3, and prevents leakage around the exterior of the screw. Within the casing of the siphon breaker is a closing device 28, which rests upon the removable bottom 29 of the casing and over the hole 30 in said bottom. This closing device is'arranged to close the passageway 24 when there is any pressure tending to force water through the siphon breaking device. In the con.- struction shown, the passage 24 has a narrow section. 3| and the closing device has a closing piece 32 adapted to close the narrow portion 3| oi the passageway when the closing piece is lifted by the pressure. The closing device is provided at its bottom with one or more openings 33,-so that air or water may freely pass downwardly through the passageway 24 and out the opening 30.

In Figs. and 6 I have shown a modified construction wherein the siphon breaker consists of a casing 34 having a passageway 36 therethrough and provided with a removable bottom 36 having an opening 31 therein. A screw 36 fastens the casing 34 to the casing of the valve I and is provided with a passageway 39 extending therethrough, communicating with the passageway 35. A- washer 40 is inserted between the flush valve and the casing 34. The passageway 35 is enlarged at ti and is provided with a closing device 42 loosely held therein. Aiscreen 43 preferably extends across the opening 31. The enlarged portion 4| of the passageway through the casing 34 is preferably provided with an inclined When the parts are in position and it is desired to flush the closet, the handle I I is moved in any direction. This causes the actuating piece l6 to engage the partiland open the auxiliary valve l3. The water in chamber 9 then escapes through the cylinder and the pressure in chamher 6 lifts the main valve and permits the water to flow from the inlet 6 through the valve and out through the discharge pipe 3 into the bowl,-

so as to-flush it. When the main valve has opened the proper amount, the auxiliary valve l3 closes so as to shut oi! the discharge of the waterdrom the chamber 9. Water then. flows from the chamber 6 up through the by-pass 22 into the chamber 9 and the main valve is moved to its closed position. Water discharged through pipe 3 sometimes remains in this pipe and, after the water has ceased to flow through the flush valve. it sometimes happens that this water by a siphon action, will cause the water from the bowl to be drawn up through-the flush valve,

past the auxiliary valve l3 and through the bypass 22. into the main source of water supply,

thereby contaminating the same. Where the siphon-breaking device herein shown is used, this result is prevented, as air flows through the siphon breaking device intothe discharge pipe 3 so as to break the vacuum therein. In Figs. 1 to 3 this air passes through the passageway 26 and the screw 26 and through the passageway 24 out through the opening 30 in the bottom 29. This prevents the backsyphonage of any water from the bowl up through the flush valve. The siphon breaker must be arranged so as to prevent the leakage of fluid from the pipe 3' under all conditions, whether normal or abnormal; In vorder to secure this result it is desirable to have the passageway 26 through the screw properly protected so as to prevent the. escape of water when the water is passing downwardly through the pipe 3, or to prevent the escape of water in the event there should be a backward flow terial, is moved under such conditions so as to close .the portion 3| of the passageway 24, d thus prevent any fluid from passing out thro h the passageway 26.

In the construction shown in Figs. 5 and 6, the closing device 42, which may be of rubber or any other suitable material, is moved under such conditions so as to close the passageway- 35.

When the present device is used water is prevented from being held or trapped in the discharge pipe andother passages and this water insures a full refill flow of water into the bowl each time the flush valve acts so that there is always provided a suflicient amount of water to insure the proper water seal in the device to be flushed.

I claim: v

1. A flushing device comprising a connection leading from the source of water supply to the device to be flushed, a valveforming a part of said connection for controlling the flow of the water therethrough, a casing located on the interior of'said connection and having a passageway therethrough having an upper and lower contracted portion and an enlargedportion intermediate the contracted portions, a part having a connected passageway which connects the passageway in the casing with the exterior of said connection, and a normally open closing device in said casing and located in the enlarged portion of said passageway intermediate the contracted portions adapted to close the passageway therethrough when moved upwardly to the end of the upper contracted portion so as to prevent flow of liquid through such passageway.

2. A flushing device comprising a connection leading from the source of water supply to the device to be flushed, a valve forming a part of said connection for controlling the flow of the water therethrough, a casing located in said con- 'nection and closed at the top, said casing having a passageway extending therethrough, a support connected with said casing and having a passageway therethrough communicating with the passageway in the casing.

3. A flushing device comprising a connection leading from the source of water supply to the device to be flushed, a valve forming a part of said connection for controlling the flow of the water therethrough, a casing located in said pas- 7 10 termined conditions.

sageway between the valve and the device to be flushed and closed at the top, said casing having a passageway extending therethrough, 'a supporting screw extending through the wall of said connection and through the wall of said casingand having a passageway therethrough communicating with the passageway in the easing, and a closing device in said casing for closing the passageway therethrough under prede- 4. In a flush valve, a casing having an inlet chamber and an outlet chamber, a valve controlling communication between the inlet and outlet chambers, means for causing the valve to 15 seat automatically against the supply pressure in the inlet chamber, the casing being provided with an air vent chamber therein separate from the outlet chamber, and valve means interposed between the air vent chamber and outlet cham- 20 her for normally admitting atmospheric air to the last named chamber, said means being operative by an upward movement thereof, to close communication to.the air vent chamber during the flush valve operation.

5. A flush valve device comprising a connection leading from the source of water supply to the device to be flushed, a valve 'forming a part of said connection for controlling the flow of the water therethrough, a hollow part below said valve, a movable closing device therein, a contracted passageway connecting said hollow part with said connection below said valve, the closing device normally supported at the upper end of said contracted passageway, the connection between the hollow part and said contracted passageway being open when the closing device is supported at the upper end thereof, the hollow part and the part containing the contracted passageway being removably connected together, and a wall above said closing device having a passageway therethrough that communicates with the outside atmosphere whereby water is prevented from passing said closing device and back syphonage is prevented.

6. i. flushing device comprising a connection leading from the source of water supply to the device to be' flushed, a valve forming a part of said connection for controlling the flow of the water therethrough, a casing located in said connection between the valve and the device to be flushed and closed at the top, said casing having a passageway extending therethrough, a support connected with said casing and having a passageway therethrou'gh communicating with the passageway in the casing.

ALEXANDER W. MOSELEY.

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