US448727A - Hydrant - Google Patents

Description

(No Model.)

S. H. ORWIG.

HYDRANT.

Patented Mar. 24

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UNITED STATES PATENT OFFICE..

SAMUEL H. O RWIG, OF LEVVISBURG, PENNSYLVANIA.

HYDRANT.

SPECIFICATION forming part of Letters Patent No. 448,72*?, dated March 24, 1891.

Application filed May 24, 1890- tion.

The object of my invention is to so construct a hydrant that the valve will be automatically closed by the pressure ot' water or other liquid, a further object being to improve and simplify the construction as a inatter of economy, as more fully set forth hereinafter. 1

In the accompanying drawings, Figure 1 is a sectional elevation of a hydrant constructed in accordance with my invention. Fig. 2 is a similar View illustrating a modification; and Fig. 3 is a sectional plan on the line 1 2, Fig. 1.

In the drawings the parts are made of full size, the height of the hydrant being reduced in order that its construction may be more clearly shown.

The base portion A is provided with an internal screw-thread a, adapted to be connected to a source of water-supply, and supportedin this base is a valve-chamber B, of the peculiar form shown, the upper end of the portion B supporting the valve-seat in the form of a ring C, which is securely clamped in position by means of a nut D, which also acts to hold the casing of the valve-chamber in position; or, if desired, the valve-chamber B may be cast in one piece with the base A, although the construction shown is preferable, as the` parts may be more readily cleaned.

On the periphery of the upper portion of the nut D is screwed the outer casing 0f the hydrant, consisting in the present instance of a pipe E, into the upper end of which isv screwed the top piece F. Vithin this outer casing E is a water conducting pipe G,

screwed at its lower end into the nut D and at its upper end to a ring I-I, screwing into the top piece F and forming with the top piece a pocket for the reception of packing h.

The valve-rod consists of a tube J, open at its lower end and provided with a ball-Valve k, its upper end terminating in an operatinghandle K.

In the nut D is formed achamber n, con- Serial No. 353,039. (No model.)

taining a ball-valve n and communicating with the water-pipe G by means of an orifice fm, its upper end opening into the space between the pipe G and the outer casing E.

In using the hydrant the water entering the base-chamber A will pass up into the valve-chamber, and entering the tube J will compress the air therein to a certain extent, dependent upon the pressure of the incoming water, which is suilicient to hold the valve lc tightly to its seat. When it is desired to open the valve, a sufficient amount of pressure is exerted upon the handle K to overcome the resistance of the Water and will open the valve, permitting the water to pass up the pipe Gand out through the nozzle q. When the pressure upon the handle K isremoved, the body of air in the tube J, which was compressed by the opening of the valve, will expand and close the valve against its seat. If, however, it is desired to maintain a constant flow of Water for any period of time, the handle K, being depressed to open the valve, is turned,and the screw-thread j upon the upper portion of the valve-rod J will engage with the thread j in the upper end of the top piece F. IVhen the valve is open, a portion of the Water will pass from the pipe G through the opening m into the chamber n, and will press the valve n closely toits seat o, preventing any escape of water from the chamber While the valve is opened and the pressure of water continues. When the valve lo is closed, however, the water in the pipe G will gradually sink from the lever of the nozzle q down to the opening 0, gradually passing from the pipe G through the chamber n and the orifice n2 into the ground, the pressure of water not being sufficient to hold the valve fn. to its seat.

As a further precaution in guiding the yvalve k to its seat, I may extend the tube J down below the level of the curved portion b of the casing B, as shown in Fig. 2, in which case Athe orifice through which the waterA passes from the base A tothe valve-chamber will be enlarged, preferably in the manner shown in the modification in Fig. 2, in which a. series of serrations or grooves fr are formed in the portion B to permit of the passage of the water around the tube J.

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upper end an escape-port, the water-pipe G, I5 a passage from said pipe to the chamber N, said passage being,` above the main valve, and a Heating valve inthe said chamber, adapted to close the escape-outlet when the hydrant is open, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

SAMUEL H. ORVIG.

W'itnesses:

SAMUEL SLIFER, P. L. CLINGAN.

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