US2176494A - Ball cock - Google Patents

Description

L-AUHHHUI J. l GARSKE BALL COCK Filed lay 5, 1938 2 Sheets-Sheet 2 Patented Oct. 17, 1939 UNITED STATES PATENT OFFICE BALL COCK Joseph Lawrence Garske, Vallejo, Calif.

Application May 5, 1938, Serial No. 206,265

7 Claims.

This invention relates to an improved ball cock and. refill valve casing assembly for toilet flush tanks or the like.

It is an important aim of this invention topro- "5 vide an improved refill apparatus for fiush tanks which will be noiseless in operation and having means whereby the valve is constructed to be non-siphoning should the pressure in the water I v supply pipe be shut oif and the valve control- '-l'0 ling the refilling apparatus become displaced from its valve seat to permit the water to recede from the refilling pipe.

It is a further object of the invention to provide novel means whereby the pressure of the water in the supply pipe will assist the float in retaining the valve in a closed position.

Other objects and advantages of the invention will hereinafter become more fully apparent from the following description of the drawings, which 20 illustrate a preferred form of the invention, and

wherein:

Figure l is a vertical sectional View of a flush tank showing the refill apparatus forming this invention mounted therein, in addition to a flush 25 pipe and valve, shown in dotted lines,

Figure 2 is a horizontal sectional view taken on the line 22 of Figure 1,

Figure 3 is a vertical sectional view taken on the line 3-3 of Figure 2, and

"30 Figure 4 is a vertical sectional view taken on the line 4--4' of Figure 2.

Referring more particularly to the drawings wherein like reference characters indicate like or corresponding parts throughout the different 35 views, designates generally a conventional flush tank, H the flush pipe, l2 the tank outlet fitting having the valve seat I3 to receive the valve l4 and a branch i5 to receive the lower end of a pipe l6 and comprising the after flow 40 pipe. Tank I0, and the parts shown in dotted lines in Figure 1 including the parts designated H, l2, [3, I4, I5 and 16 are conventional in form and shown merely to illustrate the application of the ball cock apparatus designated gen- 45 erally IT.

The ball cock ll includes the threaded end l8 which projects through an opening [9 in the bottom of tank [0 and is secured in a watertight connection therein by means of the gaskets 50 and nuts designated generally 20. The threaded end I8 is adapted to be secured to a supply pipe, not shown, to furnish water to the passage 2| which has the restricted downwardly extending portion 22 opening into the enlarged central por- 55 'tion23 of 'the valve casing 24. Casing 24 forms a part of the ball cock assembly designated generally I1, and has a depending annular flanged opening 25 in which is slidably mounted the cylindrical portion of a valve designated 26. The cylindrical portion of valve 26 is provided with an annular groove 21, as best seen in Figure 4,

in which is mounted a sealing ring 28 to prevent leakage through opening 25. The reduced upper end 29' of valve 26 is provided with an annular recess containing a disk shaped packing 30. Pas- 9 sage 22 projects into the enlarged portion 23 of casing 24 forming a tit 3| adapted to engage the packing 30 to close the passage 22.

The ball cock I1 is provided with an elbow shaped branch 32 adjacent the bottom of tank I6 having a passage 33 communicating with end i8 and passage 2i, and an internally threaded outlet in which is mounted the threaded end of a pipe 34 which projects upwardly therefrom and forms a cylinder adapted to receive the depending end of a piston 35. An inverted cup-shaped washer or gasket, preferably formed of leather or the like, is secured to the lower end of piston 35 by a screw 31 which engages a threaded open- A ing 38 in the end of the piston. Cup-shaped washer 36 is held against the bore of cylinder 34 by the pressure of the water therein as will hereinafter be described. The opposite end of piston 35 engages a recess 39 in the lower end of the valve 26.

One end of a shank of the float 46 is pivotally connected to the portion 4! by means of an eye screw 42 as seen in Figures 2 and 3. The shank designated 43 has an enlarged portion 44 engaging a slot 45 in piston 35, and an internally threaded socket 46 at its free end into which is fitted a threaded end of the rod 41, the opposite end of which is removably connected to the float 40.

Referring to Figure 4, it will be seen that the enlarged portion 23 of casing 24 is provided with a branch 48 disposed at right angles tothe plane of passage 2| and communicating with the portion 23. Branch 48 is provided with an internally threaded depending open end 49 in which is mounted the threaded end of a pipe 56 which depends downwardly therefrom and which opens below the plane of the valve seat i3 which forms the low water level of the tank ID. Branch 48 is also provided with an upwardly extending ex- 50 ternally threaded outlet M to which is connected the tube 52 by means of the socket nut'53 and ferrule 54. Tube 52 has a relatively restricted bore, as indicated by the dotted lines in Figure 4, as compared with the other passages of the ball 55 cock assembly ii, and has a hooked shaped end 55 which opens into the upper end of the pipe It.

From the foregoing it will be seen, that when rod 56 is raised to lift the valve M out of engagement with the seat l3, and held in a raised position by any suitable means, not shown, until the supply of water in tank H) has passed out through pipe H to the toilet fixture, not shown, to be flushed, the float til will fall to the position as seen in Figure 1 since the water level in tank ID will be approximately at the level of valve seat l3. Float Ml in its lowered position will have opened valve 25, so that it will be in the position as seen in Figures 3 and 4 thereby permitting the water supplied through the inlet Hi to pass upwardly as indicated by the arrows through passage 2l, into the enlarged portion 23 of valve casing 24, through branch at and downwardly through pipe 50 to be dispensed through the open end of the pipe 50 which is as seen in Figure 1 beneath the level of valve seat l3 and beneath the low water level. Flush valve I4 now being closed, the water entering tank it! through pipe 50 will begin to raise the water level therein and with it the float 40. At the same time, water will be forced through tube 52 and into pipe l6 due to the back pressure in pipe 5% caused by the pressure of the water in tank is. The water supplied to pipe 55 will pass through fitting l2 beneath the valve M, through pipe H to the toilet bowl, not shown, to supply the after flow for refilling. As the level of the water rises in tank in, float 40 will rise until packing 35 engages the tit 35 to close passage 22 to shut ofi the flow through 2i. As seen in Figure 4, slot 55 is substantially longer than the width of portion Mi so that shank 43 may move relatively thereto. As a result, when float 4E3 begins to raise the valve 25 the weight of the float will be relieved from the piston 35, and the pressure of the water in cylinder 34 impinging against washer 35 will assist float 4E3 in completely closing passage 22 when the level of the water in tank H) has reached a predetermined point.

Since the size of the bore of cylinder 34 is greater than that of passage 22, there is a greater pressure against the lower end of piston 35 than against the upper end of valve 26 so that the valve will be held in a fully closed position until the weight of float ll! combined with the pressure in the upper end of passage 2! overcomes the pressure in cylinder 34 to again open the valve, which will occur when the water level has again fallen in tank it). Since pipe 5?] opens beneath the low water level of tank ill the refilling of the tank will be accomplished without any noise ordinarily caused by the water entering the tank, and since valve 26 will positively close passage 22 as soon as it comes into engagement therewith, as heretofore explained the pressure in the upper end of the passage 2i cannot delay the closing of the valve 26 as is usually the case. As a result, a full flow of water continues until the valve engages the tit 3! at which time it is immediately and fully closed eliminating any noisy vibrations of the valve in closing.

Should for any reason, the pressure in the supply pipe cease and the valve 25 thereafter become open caused by a fall in the water level in the tank, the pipe 50 will not siphon the water out of tank i 0 since the tube 52 which opens into pipe 16 will act as a vent for the casing 24 and the passage 2|.

The construction as illustrated in the drawings may be readily repaired and adjusted, since the only moving parts are the Valve 26, float 40 and piston 35, which may all be readily removed by merely removing the screw 42 after which shank 43 can be disconnected from piston 35, which can then be lowered in cylinder 34 to disconnect it from valve 26 which may then be withdrawn from casing 24, after which piston 35 may be raised into casing 24 and thus disconnected from cylinder 34 so that it can be removed.

Various modifications and changes in the construction and arrangement of the parts forming the invention may obviously be made and are contemplated without departing from the underlying principles thereof, and the right is expressly reserved to make such variations and changes in the construction and arrangement of the parts forming the invention as do not depart from the spirit and scope of the appended claims.

I claim as my invention:

1. A device of the class described comprising a casing adapted to be connected to a supply pipe, a pipe forming a part of said casing and extending upwardly, a depending valve casing formed integral with the upper end of said pipe and communicating therewith, a valve slidably mounted therein and adapted to close said valve casing, said pipe being provided with an elbow joint adjacent its lower end and opening upwardly, a pipe extending upwardly from the open end of said joint forming a cylinder open at its upper end, a piston slidably mounted in said cylinder having its upper end in engagement with said valve, 2. float pivotally connected to said pipe and connected to the piston to actuate said valve, and an outlet pipe connected to and communicating with said valve casing and depending therefrom, said valve being adapted to be closed by the combined upward movement of the float and the pressure on the lower end of said piston.

2. In a device of the class described, a valve casing assembly adapted to be connected to a supply pipe, said assembly including a pipe extending upwardly and having an enlarged depending valve casing formed integral with its upper end and communicating with the pipe, said valve casing having a restricted flanged opening at its lower end, a valve slidably mounted in said opening and provided with a recess in its bottom, a cylinder connected to said assembly and communicating with said pipe, a piston slidably mounted in said cylinder and having its upper free end in engagement with the recess of said valve, a float pivotally connected to said assembly and operably connected to said piston, and an outlet pipe communicating with said valve casing and depending therefrom, said valve being raised by the rising of the float to close the communication between the valve casing and pipe, said piston cooperating with the float in closing said valve.

3. A refill pipe for toilet flush tanks adapted to be connected to a supply pipe, a valve casing formed integral with the upper end of said pipe, communicating therewith and depending therefrom, a valve slidably mounted in said casing, a cylinder connected to said pipe and disposed beneath and in spaced relationship to said Valve casing, a piston having one end slidably mounted in said cylinder and the opposite end positioned to abut against the lower end of said valve, an outlet pipe communicating with said valve casing and opening at substantially the level of the lower end of the refill pipe, and a float pivotally connected to said pipe and operably connected to said piston to raise the valve to close the passage between the pipe and valve casing when the float rises, the pressure of the water on the lower end of said piston cooperating with said float to close the valve, said valve being opened by the pressure in the pipe when the piston is retracted by the float.

4. In a noiseless refill pipe for toilet flush tanks, a pipe having a main passage and a branch passage, a valve casing formed integral with said pipe and having an inlet communicating with the main passage of the pipe, a cylinder connected to the branch passage of said pipe and disposed beneath and spaced from said casing, a float adapted to be operated by the liquid level in said tank, a piston having one end mounted in said cylinder and operably connected to said float, a valve slidably mounted in the casing and operably connected to said piston whereby upward movement of said float aided by the liquid pressure in said cylinder moves the valve to close the inlet to the casing, said casing having an outlet spaced from said inlet, said piston being retracted out of engagement with said valve by the downward movement of said float so that the valve will be opened by pressure in the pipe.

5. A device of the class described comprising a liquid supply pipe for flush tanks having a restricted depending outlet end, a valve casing formed integral with and depending from said outlet end, said casing having a restricted open end, a valve slidably mounted in said casing end to close the outlet end of said pipe, said valve having a recess in its bottom, a tube disposed beneath said valve casing and communicating with said supply pipe, a piston mounted in said tube and having its upper end extending into the recess in the valve, and a float having a lever pivotally connected to the supply pipe and in engagement with said piston, said float being adapted to be actuated by the liquid level in the flush tank for actuating the valve, and the piston being adapted to be urged upwardly by liquid pressure in said tube to co-act with the float for closing the valve.

6. A flush tank valve comprising a valve casing mounted on the outlet end of a liquid supply pipe and having an outlet in its side, said casing having an annular flanged opening aligned with the outlet end of the supply pipe, a valve slidably mounted in said flanged opening for closing the outlet end of the supply pipe when in a fully closed position, said valve having a recess in its outer end, a cylinder having one end connected to and communicating with said supply pipe, a piston having one end slidably mounted in the cylinder and its opposite end projecting into the recess in the valve, said piston having a slot adjacent said last mentioned end, and a float, adapted to be actuated by the liquid level in a flush tank, having an arm extending through the slot and pivotally connected at its free end to the supply pipe for closing said valve, the piston being adapted to be urged by liquid pressure in said tube to co-act with the float in closing the valve.

7. A flush tank valve comprising a valve casing mounted on the outlet end of a supply pipe and having an open cylindrical walled end, a valve slidably and movably mounted in said open end and having one end projecting into the casing to engage and close the outlet end of said pipe, the valve being adapted to be urged to an open position by liquid pressure in said pipe, a cylinder spaced from said casing, a piston slidably mounted therein and having one end engaging the outer end of said valve, said cylinder communicating with said supply pipe whereby the pressure therein will urge the piston outwardly to counterbalance the outward pressure in the valve, and float means, adapted to be actuated by the liquid level in a tank, connected to said piston to move it toward the valve for closing it and for moving it away from the valve whereby the valve will be opened by the pressure in the supply pipe.

J. LAWRENCE GARSKE.

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