US1846623A - Sanitary frostproof hydrant - Google Patents

Description

Fe%. 23, 1932. VQLK ET AL 1,846,623

SANITARY FROSTPROOF' HYDRANT I Filed Oct. 7, 1930 INV E/NTORS PE 75/? VOLK AND Ammo/WM WUEBBEN Patented Feb. 23, 1932 f UNITED STATES PATENT OFFICE PETER VOLK AND ANTHONY J'. WUEIBBEN, OF DAYTON, OHIO, ASSIGNOBS TO PHILIP HAAS COMPANY, INC., 0]? DAYTON, OHIO, A. CORPORATION 013 OHIO SANITARY FROSTPROOF HYDBANT Application filed October 7, 1930. Serial No. 488,959.

Our invention consists in the novel features herein after described, reference being had to the accompanying drawings which show one embodiment of our invention, selected by us a for purposes of illustration, and said invention is fully disclosed in the following description and claims.

Our invention consists in a novel frost proof hydrant, in which a connection with the sewer is provided below the frost line to drain any water remaining in the pipe, which connection is closed tightly when the inlet valve body is in open position,and in which a combined inlet and check valve for the water inlet is employed below the drain aperture, held open by pressure in the main, when the valve body with which it is connected is in open position but capable of instantly closing the water inlet in case the pressure in the main should at any time fall below that in the portion of the hydrant above the said inlet aperture. This check valve insures that no contaminated water which may enter the valve casing through the drain aperture while the valve body is in the closed position can possibly pass into the supply pipe and contaminate the water therein, or be drawn therefrom through other taps or faucets which may be connected therewith.

Referring to the said drawings,

Fig. 1 is a vertical sectional view of a frost proof hydrant embodying our invention.

Fig. 2 is an enlarged detail sectional view of the valve body and associated valves shown in Fig.v 1.

Referring to the accompanying drawings 1 represents the main tubular casing or pipe of the hydrant having a lower portion extending below the ordinary frost line, indicated by a dotted line in Fig. 1, and an upper portion extending to any usual or preferred distance above the ground level. The lower end of the pipe, 1, is provided with a valve casing, 2, which is hollow, being preferably a cored casting of brass or other suitable material provided with a central vertical passage, 3, and a vertical by-pass, 4, communicating with the passage, 3, at two points in different horizontal planes, as indicated at 5 and 6. The upper end of the casing, 2, is provided with a large interiorly threaded aperture, 7, coaxial with the passage, 3, through which a boring tool may be inserted for boring out the passage, 3, to provide truly cylindrical and smooth walls therefor. The upper end of the casing is connected with the lower end of pipe, 1, directly or by a reducer, 8, as shown, to accommodate varying diameters of the hydrant pipe or casing. The lower end of the valve casing is provided with any usual means for connecting it with a water service main or supply pipe, 9. In this instance the lower end of the-casing is provided with a portion coaxial with the passage, 3, below the by-pass, 1, and exteriorly threaded to receive a coupling member, 10. The lower portion ofpassage, 3, indicated at 3", is of smaller diameter than the bored portion, and is provided with a valve seat, 11, coaxial with the bored portion and adjacent to the lower connection thereof with the bypass, 4.

Between the upper and lower ends of the by-pass, 4:, the valve casing is provided with a lateral drain passage, 12, communicating at its inner end with the bored portion of passage, 3, and extending through a projection, 13, on the valve casing, which is provided with means, 14, for attaching a drain pipe, 15, which is connected with a soil pipe or other pipe leading to a sewer.

16 represents a valve body which is of general cylindrical form and is provided centrally of its length with an annular recess, 17. The cylindrical portions of the valve body are of a diameter to guidingly but easily engage the bored portion of passage, 3, and the lower cylindrical portion is provided with an annular recess, 18, to receive an annular valve sleeve, 19, of rubber, which is of such thickness as to fit the bored portion of passage, 3, and form a valve for completely closing the drain passage, 12, when the valve body is in the raised or valve open position. This valve sleeve can be stretched in placing it over the valve body and will contract into the recess, 18.

The valve body is hollowed out through its upper part for which it is p aperture, 21, ct

diameter. e upper end of the 3, is counter-bored and interiorly at 22, to receive the lower threaded end of a valve actuating rod, 24, to which it is connected directly or bya reducer, 28, as shown.

The-lower end of the valve body carries a combined check and cut-oil valve, which is movable vertically and also rotatably with respect to the valve body but is connected therewith. A valve stem, 25, extends through the guiding aperture, 21, in the valve body and is provided with an enlarged head, 26, within the chamber, 20. The lower end of the stem, 25, which extends a considerable distance below the body, 16, is reduced in diameter as at 27, and fits an aperture in the check valve body, the lower face of which is recessed to receive a valve washer, 29, and a screw, 30, extends through the washer, 29, and engages a hole in the stem, 25, thus holding the washer, 29, .body, 28, and stem, 25, in assembled relation. The head, 26, of the stem is provided with means as a screw kerf to receive a screw driver, to hold the stem from turning while the screw, 30, is turned up tightly.

The upper end of the hydrant pipe, 1, is provided with a head having a spout or discharge member and means for imparting vertical movement to the rod, 24:. In this instance we have shown the upper end of the pipe, 1, provided with a head casing, 31, threaded thereon and provided at its upper end with a detachable closing plug, 32, having a threaded aperture engaging a threaded actuating stem, 33, provided with a hand operating device, 34, and the casing, 31, is also preferably provided with a packing gland, 35, and packing washer, 36, around the stem, 33. The head casing 31, is also provided with a discharge aperture, 37, to which a spout or delivery member, 38, is connected in any usual or desired manner. The stem, 33, is connected rigidly with the rod, 24, and is preferably provided adjacent to the lower end of its threaded portion with a sealing washer, 39, above an annular shoulder, -10, for engaging the lower face of plug, 32, when the stem and rod are fully raised and the valve body is in open position, thus limiting the upward movement of the valve body and further acting in conjunction with the gland to prevent leakage around. the stem, 83.

These hydrants are usually installed outside of buildings and connected with the water service pipe which supplies nearby taps or faucets from which water for drinking and like purposes may be drawn. Fig. 1 shows the parts in the closed position in which the drain connection to the sewer is necessarily in open connection with the interior of the valve casing, so that the standing water in pipe, 1, will be drained to the sewer after a previous use of the hydrant. In this osition of the parts the combined check an cut-oi? valve,

29, is seated, and pressed firmly to its seat by raised bringing the annular valve, 19, over i the drain passage, and releasing the check and inlet valve, which is raised by the water pressure in the main, and the water flows upwardly through the by-pass, and pipe, 1, to the delivery aperture. In case of a sudden reduction of pressure in the supply main, the check and cut-off valve would immediately drop upon its seat so that no water which has once passed into the valve casing can possibly return to the main. When the valve body is lowered, the check and cutoff valve, 29, will be forced to its seat and the cylindrical valve, 19, will be moved below the drain aperture to drain the casing, 1, and prevent freezing of water therein.

Should the sewer back up as often occurs, it is possible that contaminated water might be forced into the valve casing and hydrant pipe. If this should occur, at a time when a reduction of pressure exists in the water supply pipe, the operation of the hand piece, 34:, of the hydrant to raise the valve body would bring the drain valve, 19, over the drain outlet to completely close the latter, and the check and cut-off valve, 29, would remain closed and prevent the possibility of the contaminated water entering the main and passing to another tap or faucet. If the pressure in the main is suilicient, when the valve mechanism is moved to open position, to lift the check and cut-ofi' valve from its seat, the water would pass upwardly through the hydrant and drive out any contaminated water therein.

The construction of our improved apparatus is extremely simple and cheap to manufacture, and is very efiicient in operation. It

' is also very durable as the only parts subject to wear are the rubber cylindrical valve, 19, and the valve washer, 29. If either becomes worn, the plug, 32, can be unscrewed and the valve actuating rod, and valve mechanism can be entirely Withdrawn to insert a new Valve part, 19 or 29, and replaced. The valve washer, 29, which is the part most subject to wear is further protected by being rotatably connected with the valve body, so that while it is free to rotate, it will be held stationary as soon as it engages the valve seat and is not subjected to a rotary action thereon as pressure is applied to it. The parts can also be produced with a minimum of machine work, as accurate fitting of the metallic parts of the valve mechanism is unnecessary.

What we claim and desire to secure by Letters Patent is 1. A sanitary frost proof hydrant comprising a vertical pipe provided at its upper end with a discharge orifice and valve rod actuating means, and at its lower end with a valve casing provided with a main bore, and a by-pass communicating with the bore at points in different vertical planes, and provided with a horizontal valve seat adjacent to the lower end of said bore, said valve casing being provided with a sewer connection communicating with said bore between the points of connection of the by-pass therewith, a vertically movable valve body within said bore, provided with lateral valve portions engaging said bore for closing said sewer connection, when the valve body is raised, and a combined check and cut off valve operatively connected with said valve body, for preventing back flow of sewage into the water supply on reduction of pressure therein when the valve body is in raised position, and a valve rod connecting said valve body with said valve rod actuating means.

2. A sanitary frost proof hydrant comprising a vertical pipe provided at its upper end with a discharge orifice and valve rod ac tuating means, and at its lower end with a valve casing provided with a main'bore, and a by-pass communicating with the bore at points in different vertical planes, and provided with a horizontal valve seat adjacent to the lower end of said bore, said valve casing being provided with a sewer connection communicating with said bore between the points of connection of the by-pass therewith, a vertically movable valve body within said bore, provided with an annular recess of substantially uniform depth, a cylindrical valve adapted to be stretched over said valve body and to fit in said recess and to project therefrom into contact with said bore to close said sewer connection when the valve body is in raised position, said valve body being provided with a vertical bore, a valve stem engaging the bore of said hollow body and having a limited vertical movement with respect to said valve body, a combined check and cut off valve carried by said stem for engaging said horizontal valve seat, to prevent back flow of sewage into the water supply on reduction of pressure therein when the valve ing being provided with a sewer connection communicating with said bore between the points of connection of the bypass therewith, a vertically movable valve-body within said bore, provided with an annular recess of substantially uniform depth, a cylindrical valve adapted to be stretched over said valve body and to fit in said recess and to roject therefrom into contact with said re to close said sewer connection when the valve body is in raised position, said valve body being hollow, and provided at its lower end with a guiding aperture of reduced diameter, a vertically movable valve stem engaging said guiding aperture and having an enlarged head above the same, a combined cutoff and check valve detachably secured to the lower end of said stem to prevent back flow of sewage into the water supply on reduction of pressure when the valve body is in raised position, and a valve rod having a threaded connection with said valve body and havin its upper end connected with said valve ro actuating means.

In testimony whereof we aflix our signatures.

PETER VOLK. ANTHONY J. WUEBBEN.

Images