US1114575A - Ball-cock for flush-tanks of water-closets. - Google Patents

Description

K. S. BLANCHARD. BALL 000K POR PLUSH TANKS 0F WATER uLosETs.

APPLICATION FILED OGT. 5. 1912.

Patented Oct. 20, 1914.

anto@ W @Hom/m C0.. PHOTO-LITHO.. wASHlNGrON, D. C.

THE MORRIS PETERS uNrrnn srArns @PATENT onirica KIRK s. BLANCHARD, or BROOKLYN, NNW YORK..l

BALL-COCK FOR FLUSH-TANKS OF WATER-CLOSETS.

Specification of Letters Patent.

Application le October 5, 1912. Serial No. 724,167.

l To all 'whom t may concern Be it known that I, KIRK S. BLANCHARD,

vply of water to a tank is controlled by a fioat operated valve. I am aware that a great many different devices have been employed for this purpose, but my invention 1s restricted to that class in which the plunger' valve is closed endwise with an end thrust against a seat surrounding the inlet port by means of a ioat andl suitable connections between the lioat lever and valve so that the pressure of the valve against its seat` is in direct opposition to the iiuid pressure at the inlet port. One of the advantages of this type of valve is that it opens `full instantly when the opposing pressure of the float is relieved by the flushing of the tank, the pressure of the fluid at the inlet port serving to assist the instantaneous opening of the valve. Under such conditions, the pres# sure of the fluid,` tending to open the valve, is constant and one of the primary objects of my present invention is to assemble the float lever andits connection with the valve in such manner that a comparatively light upward pressure yupon the float will produce amaximum degree of pressure upon the valve, tendingto hold it to its seat against thepressure of the fluid.

Another object is to provide simple means for preventing the forcible exit of water along the valve through the open end of the valve chamber so as to permit the use of a plain metal plunger without packing.

A still further object is to limit the range of movement of the float lever to a relatively short arc in openingv and closing the valve, thereby obviating the usual long travel of the float fromthe normal water level to the bottom ofthe flush tank.

Other objects and uses will be brought out in the following description.

In the drawings-*Figure 1 is a longi-l tudinal vertical sectional view, partly in elevation, of one form of my improved ball cock and a portion of the tank and water Patented oet. so, 1914. j*

supply pipe,'the valve ycase being secured to A the top of the tank while thejsupply pipe extends through the bottom of the tankand is connected to the valve case by a slip joint.

lFig. 2 is asimilar sectional view, Lpartly in elevation, of another form of my invention in which the vvalve case is secured to the top of the tank while the supply pipe leads to the valve case from the ,top of the tank. Fig. 3 is a longitudinal vertical sectional lview of a still further modied form of my invention in which the kvalve case is'secured directly to the bottomy of the tank Vand the link connectionbetween the float lever and of the valve both in its open andclosed positions. 1 f

In Fig`.-l, I have shown a valve case 1 as provided with a laterally projecting bracket 2h secured by suitable fastening means, as a screw -3-, yto the upper edge or top of a flush tank -A-, the main body of the valve being disposed in an upright position some distance above thebottom of the tank and isprovided with an open lower end for slip connection with a water supply l7o valve is disposed at a slight angle to the axis pipe --a-i, extending through the bottom of the tank and connected thereto in any suitable manner to prevent leakage.

The lower end of the valvej case .-1- isk threaded externally and yprovided with a packing 5 to prevent leakage. The supply pipe zpasses through` the central aperture in the cap 4.- and packing -5-` thereby permitting the valve case to lbe adjusted vertically along the upper end of the r`centrally apertured screw-cap 4..- andl leakage at the joint between the valve case and supply pipe.

The upper end of the valve case is ofse laterally in the opposite direction from the bracket --2-w and is provided withy a cylindrical valve chamber -6-, having an inlet port .7- and an o-utlet port ,-8-, the in-l n I let port being in constant communication with the supply pipe `while the outlet port is normally cut olf from communication by a valve, presently described, and is provided vwith a conduit -9 leading downwardly for directing the inflowmg water into the interior of the tank.

A cylindrical plunger valve +10- is fitted with anl easy sliding t and movable within the valve chamber -'-6-, but isv somewhat longer than the distance between the valve seat as T and outer-end of the chamber so as to allow the outer end of the valve to project some distance beyond the valve case when closed. The opposite end of the valve is recessed and provided with ay packing -11 of rubber, leather or other suitable material, closing with an end thrust against the valve seat -7.- which surrounds l the inlet port -T-L The intermediate portion of the valve -10` is, provided with an annular groove -12'- locateda distance from the packing end oi' said valve less than the distance between the valve seat -7-' and inner end of the valve caseor open end of the valve chamber and is movable with said valve into and out of registration with an auxiliary discharge port M13- This auxiliary outlet leads downwardly so as to discharge inte the interiorot the tank andis located a distance from the valve seat -7- slightly greater than the distance between the packing end of the valve and annular groove -12- so'that the auxiliary port is normally closed by the valve when the latter is closed against its seat -7-, but is open by registration with the groove -12- as soon as the valve recedes from its seat. The object of this annular groove and auxiliary port is to neutralize or relieve as far as possible they pressure ot the fluids tending to follow along the valve through the open outer end of the valve chamber, which would be detrimental particularly in valves which are secured to the top of the tank as in the device just described.

The outer end of the valve, which protruoes beyond the valve case, is pivotally connected to a link 1awhich, in turn, is pivotally connected to a float lever -15--, the latter being pivoted at -16- to a suitable lug 17H on vthe underside of the inner end or" the valve case, preferably at the inner side of the auxiliary discharge opening '18-. This tloat lever is provided with a vertically adjustable section 16'- carrying a float -17- which is adapted to be ope ated by the rise and Jfall of the water within the tank. This adjustment of the float supporting section 1(5- relatively to the main body of the lever -15- is effected by connecting these parts by means of a clamping bolt -18- which may be loosened at will when the adjustment is required and retightenedto hold the supporting section -lG- in its adjusted position.

` rlhe pivot w16- upon which the lloat lever -15- is adapted to rock vertically is located in a plane below and some distance from the pivotal connection between the valve lO- and link -14-- toward the packing end of the valve while the main body oi the lever extends from said pivot across the extended axis of the valve some distance to the opposite side of the pivotal connection between such valve and link while the pivotal connection between the lever .and link is located in approximately the direct line of movement of the valve or near the extended axis of such valve when the latter is closed so as to cause the lioat lever to exert a direct end thrust pressure upon the valve to hold the same closed when the float is suiiiciently elevated by the water in the tank. This disposition oi the connecting link m1t between the valve and iloat lever also establishes a toggle look between the link and lever to more effectively hold the valve against its seat under the buoyant pressure of the water upon the float.

As previously intimated in the'statement of the object of the invention, the lever and its connections with the valve are arranged so as topermit only a relatively small movement of the lever from its closed to its extreme open position and for this purpose the pivoted end of the lever is extended toward the main body of the valve case and provided on its upper side with a flat abutting face 19 for contact with an opposed abutting face -1J- on the lower side of the outer end oii the valve case, said abutments being` disposed a short distance from the pivot -16- toward the main body of the valve case and are normally operated only a slight distance when the valve is closed with just enough clearance to allow the valve to 'open before the abutments are brought into contact, thereby liiniting the downward movement of the float irrespectiveof the recession ,of the water in Vthe flush tank during the flushing operation.

The construct-ion shown in Fig. 2 is very similar to that shown in Fig. 1 except that the connection between the supply pipe, as and valve case is coaxial with the valve chamber and valve and allows the ball cock to be connected to the tank without carrying the supply pipe through any part of such tank.

1n the ball cock shown in Fig. 3, the valve case is secured directly to and passes through the 'bottoni of the tank to which it is connected by any suitable water tight joint, otherwise this ball cock is very similar to that shown in Figs. 1 and 2 with the single exception that the portion of the float lever as -15- between its pivotal connections with the valve case and link is straight and that the pivotal connection between the lever and link is adapted to move slightly above and below the extended axis of the valve, but in all of these several devices, it will be observed that the pivotal connection between the float lever and valve case is below the valve and some distance from the pivotal connection between the link and valve toward the valve seat.

1t will be observed that by pivoting the lever -15- to the valve case some distance below the valve and then pivot-ing the link --lll-v to the lever approximately in line with the axis of the valve when such valve is closed; the pivotal connection between the lever and link may move through and above and below the extended axis of the valve with the assurance that when the valve seat and valve wears the upward movement of the float lever will always crowd the valve to its seat. This action is also due to the fact that the pivots for the lever and link on the casing and valve respectively are located at one and the same side of the pivetal connection between the link and lever and that the lever pivot is below the valve, thereby causing` the pivotal connection between vthe lever and link to swing through an arc which intersects the extended axis of the valve at an oblique angle with the center of such arc below the valve.

-What I claim is:

l. A ball cock comprising; a Valve case having' an inlet port and separate outlet ports at different distances from the inlet port, a plunger valve coaxial. with the inlet port for opening' and closingthe same and movable across the outlet ports, said valve having' an annular channel registering with the outlet port farthest from the inlet port', a float lever pivoted to the valve case at a point some distance below the valve and be yond the farthest outlet and extended across the produced axis of the valve some distance beyond the outer end thereof, and a link'- Copiesof this patent may be obtained for pivotally connected to the valve and to the considerably less than the distance between the lever pivot and its pivotal connection with the link. i

2. A ball cock comprising a valvek case having an inlet port and an outlet port, a plungervalve coaxial with the inlet port for opening` and closing' the same and movable across the outlet port, a ioat lever pivoted to the valve case at a point some distance below the valve and extended some distancebeyond the valve and across the produced axis thereof, means for limiting the downward movement of the lever, and a link pivotally connected to said lever and to the outer end of the valve in approximately the horizontal plane of said axis, the distance between the pivotal connections of the link with the valve and lever being considerably less than the distance between the pivotal connection of the link with the lever and the pivotal support of the lever, while the distance between thel pivotal connection of the valve with the link and the inlet port isa considerably greater distance than the dishandthis 28th day of September 1912.

KIRK S. BLANCHARD. Witnesses A. NE1L WILoox, C., H. MERRITT.

five .cents each, by addressing the Commissioner of lateilts,r-

Washington, D. C.

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