US1355988A - Automatic flush-valve - Google Patents

Description

J. McNElL. AUTOMAT'ICIFLUSH VALVE. APPLICATION FILED MAR- 29. 1:911.

1,355,988; Patented Oct. 19,1920.

of Hamilton and btate of UNITED STATES rArENr OFFICE.

JOHN MCNEIL, OF CINCINNATI, OHIO, ASSIGNOR TO THE JOHN DOUGLAS COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

AUTOMATIC FLUSH-VALVE.

Specification of Letters Patent.

Patented Oct. 19, 1920.

Application filed March 29, 1917. Serial No. 158,176.

To all whom it may concern:

Be it known that 1, JOHN MoNmL, a citizen of the United States of America, and lresident of Cincinnati, in the county Ohio, have in vented a new and useful Improvement in iiutomatic-Flush-Valves, of which the following is a specification.

An object of my invention is to produce an improved automatic flush valve for tanks, in which corrosion of the parts will not affect the operation of the valve.

This and other objects are attained in the construction described in the followin spe'cificationiand illustrated in the accompanying drawings, in which:

Fi ure 1 is a cross sectional view or a tank disclosing a valve'embodying my invention, mounted therein.

Fig. 2 is a view ofthe parts disclosed in Fig. l, but showing the valve elements moved to different positions.

Fig. 3 is a sectional view taken on the line 3-3 of Fig. '1.

Fig. 4 is a sectional view taken on the line 44 of Fig. l.

Fig. 5 is a detail sectional view of a pivot joint of my improved valve.

My improved valve consists of a siphon 5 having one of its branches 6 extending through the bottom of the tank and provided with any suitable means, such as the screw threads 7, for connection with the pipe adapted to conduct the flush water from the tank, the opposite branch 8 of the siphon extending to a point adjacent to the bottom of the tank and adaptedto be uncovered by the valve 9 to permit the water to enter the siphon and to be discharged therethrough. Valve 9 is loosely mounted upon an arm 10 pivotally mounted at a point 11 on a bracket 12 extending from the lower end 13 of branch 8 to the siphon. Arm 10, at its pivot point 11, is loosely mounted. Valve 9 consists of a disk 14 of rubber or other suitable yielding material having washers 15 and 16 upon its res ective upper and under sides. These was ers are materially smaller in diameter than the 60 opening of end 13 of siphon 5, so that the yielding material of valve disk 14 will yield when the valve is brought to its closed position and be held therein by the pressure of the water in the tank. Pivot pin 1'7 of valve 9 is very loosely mounted so that the valve may seat itself without difliculty when moved to its closed position. Opposite bracket 12, a lug 18 is formed on end 13 of siphon 5. This lug is adapted to carry guides 19 and 20 which extend dow11- wardly and guide arm 10 in its upward and downward movements, so that valve 9 may be moved to register properly with the opening in end 13. These guides are of sufficient distance apart to permit of free movement of arm 10, so that no corrosion oi the metal thereof will render the valve inoperative by causing its parts to stick.

1 he movable endv 21 of arm 10, is pivotallyconnected at a point 22, with the lower end 23 of a yoke or fork 24. The pivotal connection 22, like connections 11 and 17, is also a very loose one. One branch 25 of yoke 24 including an upwardly extending rod 26 is reciprocally mounted in a lug 27 76 extending from the top 28 of siphon 5, stop nuts 29 being provided on the rod for limiting the downward movement of yoke 24. The mounting of rod 26 in lug 27 is also a very loose one. Between branches 25 and 30 of yoke 24, a rod 31 is located, the rod being loosely mounted in the ends of branches 25 and 30; Upon rod 31 and rigidly connected therewith is mounted a' cup 32, adapted when empty to act as a float by means of which valve 9 is lifted to its closed position, and when filled to act as a weight by means of which the valve is opened. Secured to one side of cup 32 is a hollow member 33 adapted to act as an air chamber to increase the buoyancy of cup 32 and also to restore the cup to such a position that it may act as a float. Located below rod 31 is a pin 34 extending from one side of the cup and adapted to engage the opposite side of branch 25 of yoke 24 from that on which member 33 is located. The purpose of this pin will be hereinafter more fully described. Extending into the tank is a pipe 35 adapted to conduct the water with which the tank is filled, avalve 36 being located at the upper end of the pipe for controlling the rate of delivery of water to the tank.

In describing the operation of my improved automatic flush valve, the tank will be considered as having been filled, the parts of the valve having been brought to occupy the positions disclosed in Fig. 1. In this condition, the water level is increased until the water overflows into the cup as disclosed in Fig. 4. As soon as the cup has been sufficiently filled to overcome its buoyancy, it sinks, its weight and that of yoke 24 and its connected parts, causing valve 9 to open against the pressure of water in the tank. Since the water level, at this time is above the top 28 of siphon 5, the water rises rapidly in branch 8 of the siphon and passes over into branch 6. The fall of the water through branch 6 then produces the siphonic action, causing the water in the tank to be withdrawn until the open end of branch 8 is reached. As the water level drops to its 5 position, hollow member 33 of cup 32 also drops, gradually tipping the cup and emptying its contents. This brings the cup to the position. disclosed in Fig. 2, which figure also shows the water level after operation of the siphon has taken place. Since the delivery of water to the tank through valve 36, is constant, the water level within the tank is gradually increased. As the alter rises, member 33 of cup 32 floats upon the surface and gradually restores the cup to its upright position, stop pin 34 gradually being brought to engage branch 25 of yoke 24 to prevent the cup being moved beyond its normal vertical position such as disclosed in Figs. 1, 3 and 4-. Simultaneously with its restoration to its normal position, the cup lifts yoke 24 and through arm 10 also lifts valve 9 to bring it into engagement with the open end of branch 8 of. the siphon. Since valve disk 14: is of yielding material and since valve 9 is loosely mounted on pin 17 upon arm 10, it is caused to seal the opening of branch 8 quickly and effectually. This prevents the passage of water through the siphon, the parts being so designed that the valve is closed before the water level reaches the point of overflowing from branch 8 to branch 6 of the siphon. As soon as the parts have been restored to the position disclosed in Figs. 1 and 2, the water level gradually rises to overflow into the cup as disclosed in Fig. 4 for the purpose of again repeating the above described operation of emptying the contents of the tank. The periodical operation of the valve may be regulated by controlling the delivery of water to the tank by means of valve 36, the requirements of the apparatus to which the discharge branch 6 of siphon 5 is connected, governing this regulation. r

In my improved construction I have designed a flush valve in which all of the pivot pins as well as all parts where reciprocation occurs, can not be affected by an accumulation of corrosion by which the valve may stick and be rendered inoperative. In addition to this I have provided a valve disk which is of such a yielding nature that particles of corrosion which may accumulate thereon and on the opening it is adapted to close, will not effect the sealing thereof against the seepage of water between it and the siphon.

Having thus described my invention, what I claim is;

The combination of a tank and an automatic flush valve comprising a siphon, a guide secured to the siphon adjacent to its top, a bracket mounted upon the siphon ad- 'acent to its mouth, a guide secured to the siphon opposite to the bracket, an arm pivoted to the bracket engaging the second mentioned. guide, branches extending from the free end of said arm, one of said branches adapted toengage the first mentioned guide, a float pivotally engaging said branches and adapted to be capsized by the emptying oi the tank and to be righted by the filling of the tank, a pin mounted upon the arm beneath the mouth of the siphon and a flexible disk secured upon the flange and of a diameter greater than the diameter of the mouth of the siphon.

In testimony whereof, I have hereunto subscribed my name this 27th day of March, 1917.

JOHN MoNEIL.

lVitnesses IVALTER F. MURRAY. WV. THORNTON BOGERT.

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