US423118A

US423118A - Valve

Info

Publication number: US423118A
Authority: US
Publication date: 1890-03-11
Anticipated expiration: 1907-03-11

Description

G. BIRKERY.

VALVE. I

Patented Mar. 11, 1890..

(No Model.)

UNITED STATES PATENT OFFICE.

CORNELIUS BIRKERY, OF HARTFORD, CONNECTICUT.

VALVE.

SPECIFICATION forming part of Letters Patent No. 423,118 dated March 11, 1890.

Application filed April 8, 1889. $e1'ial No. 306,328. (No model.)

To all whom it may concern:

Be it known that I, CORNELIUS BIRKERY, of Hartford, Connecticut, have invented certain new and useful Improvements in Valves, of which the following is a specification.

My invention relates to the class of valves used for water-closets and cisterns, which are automatically opened and closed by the vary ing levels of water in a tank or fioat-chamber.

The object of the invention is to construct a valve of this class which is so balanced that under widely-differing pressures it will operate easier, surer, and with less hammering than prior valves of this class.

Referring to the accompanying drawings, Figure 1 is a sectional view of a tank, show ing the valve in side elevation. Fig. 2 is a view in central longitudinal section of the valve on enlarged scale. Fig. 3 is a cross section of the valve on plane denoted by the broken line so 00 of Fig. 2. Fig. l is a detail side view of the valve-disks.

I11 the drawings, a indicates a tank; I), an automatic valve adapted to keep the water in the tank at the desired level, and c an ordinary outlet for emptying the tank of water. The casing b of the valve is cast to shape with a cylindrical body having a threaded hub 61 at one end, whereby the valve may be attached to a water pipe. A channel f is formed from the inlet e through the hub d to the opening g into the chamber gin the opposite end of the casing. The front end of the cylindrical hub h, which projects into the chamber g, forms the disk-seat, and the opening through this hub leads from the chamber g into the outlet-spout t'. The valvedisks m and n are connected together and held with a space between them by rods 0, the outside diameter of these disks being equal to the diameter of the chamber g. The disk on extends entirely across the chamber. Its packing makes a water-tight joint with the walls of the chamber, and when it moves up and seats itself against the front end of the hub h the passage of water through the valve is stopped, while the disk at has a central opening which fits the hub h, the packing of this disk making a water-tight joint with the walls of the chamber g, also with the hub 7t. A spindle Z is secured to the disk m, and after extending through the cap j and stuffing box rise and fall, and consequently adjust the opening and closing of the valve as the level of the water in the tank changes. tis an escape for any water that leaks back of the packing of the disk at, and t is an escape for water which leaks past the packing of the disk m. These small openings 25 and 25' also permit air to slowly enter into or escape out of the chambers back of the disks, so that air-cushions are formed which retard the movementof the disks and prevent them from any quick and jerky movement in opening or closing, thus preventing water-hammer.

W'ater entering the passage 6 traverses the channel f through the opening 9' into the chamber g, between the disksmand n. When water is drawn from the tank and the float drops, the disk m is pulled away from its seat against the end of the hub h, and Water passes through the hub 77. and spout c' into the tank until the float is raised sufficiently to force the disk m against its seat. It will be noticed that the water-pressure upon the disks 1%. and n is in opposite directions, which so balances the pressure that the disks are easily moved, but a few ounces of weight are required to open the valve, and but a small float is necessary to close it, which operations, also on account of this balancing, are free from the usual hammering. Another advantage resides in the fact that the disks move in closing in the direction of the departing water, and dirt and grit will not become caught be tween the disk m and its seat, the balancing of the disks and the air-cushions back of them making the disks move slowly in closing and allow the escaping water to draw away any sediment liable to be caught between the face of the disk and the end of the hub. This is not so where a valve closes suddenly or is pulled up against the force of the current.

The invention is illustrated and described in connection with a tank, but obviously it can be used in connection with cisterns and.

water-closets without departing from the invention.

I claim as my invention- 1. In a valve, a casing having an inlet, a disk-chamber, a hub projecting into the diskchamber, and an outlet, in combination with a disk-packing and a ring-packing located in the disk-chamber upon opposite sides of the inlet-opening, with an air-chamber back of them, the disk being adapted to close the outlet and the ring to retard the movement of the disk, and means for automatically opening and closing the valve, substantially as specified.

2. In a valve, a casing having an inlet, a channel from the inlet to an opening into the disk-chamber, a hub projecting into the diskchamber, and an outlet spout, in combination with a disk adapted to seat itself against the end of the hub and a ring connected to the disk adapted to slide upon the hub,'and'a spindle, lever, and float for automatically opening and closingv the valve, substantially as specified.

3. A valve-packing consisting of a disk and a ring-piston rigidly connected with a space between them, said disk reciprocating in the disk-chamber of a valve on one side of the inlet and adapted to open and close the outlet, said piston being mounted on the outlethub and reciprocating in the disk-chamber on the opposite side of the inlet to regulate the motion of the disk, substantially as specified.

CORNELIUS BIRKERY. Witnesses:

HARRY R. WILLIAMS, A. B. JENKINS.