US2292674A - Hydrant - Google Patents

Description

Aug.- ll, 1942. y w. F. TERRELL 'ETAL l 21,292,674

HYDRANT Filed July 2;. y1941 2 sheets-sheet 1` Patented Aug. 11, 1942 HYDRANT Walter F. Terrell and Abraham S. Fisher, Chicago, Ill.

Application July 2, 1941, Serial No. 400,784

4 Claims.

The invention relates to improvements in hydrants, and has for its primary object the pro- Vision of an improved hydrant construction which is simple and ecient in use.

Other objects will appear hereinafter.

The invention consists of the vcombinations and arrangements of parts hereinafter described and claimed.

I'he invention will be best understood by reference to the accompanying drawings forming a part of this specification, in which--` Figure 1 is a side view, shown partially in section, of the upper portion of a hydrant construction embodying the invention; Y

Fig. 2, an enlarged vertical section taken through the lower portion of said construction;

Fig. 3, an enlarged section taken substantially on line 3-3 o-f Fig. 1;

Fig. 4, a section taken substantially on line 4-4 of Fig.2;

Fig. 5, a section taken substantially on line- 5 5 of Fig.2

Fig. 6, a section taken substantially on line 6-6 of Fig. 2; and

Fig. '7, a section taken substantially on line 1--1 of Fig. 2.

The embodiment of the invention illustrated in the drawings comprises a suitable fitting I0 in elbow form adapted and arranged to be placed underground and connected by a pipe II with a water main, as is usual in hydrant construction. The upper portion of the tting I0 has a threaded connection with another tting I2, which in turn has threaded connection with the lower1 end of a discharge pipe I3 extending to the surface and there attached to a hydrant box I4 having an upwardly swinging cover I5, as indicated. The box I4 is equipped with the usual head I6 removably attached thereto by bolts I1, and having a lateral discharge coupling I8 for connection in the usual way with a supply pipe or other fitting for utilizing the water owing through the discharge pipe I3 from the water main, as Will be readily understood.

A check valve I9 is arranged, as indicated, at the bottom of Fig. 2 to reciprocate freely in fitting Ill, being carried by a valve stem 2B operating freely in a guide 2|, and whereby said valve I9 is mounted for free vertical and rotative movements. Valve I9 is double-acting, and for this purpose is arranged to seat either upon a lower valve seat 22 or upon an upper valve seat 23, being guided in said movements by radial guide lugs 24 contacting loosely with the walls of shown, the valve I9 is in umbrella form so as to be more readily lifted and thus closed by water flowing upwardly through the fitting I0, as will be readily understood. By this arrangement a double-acting check valve is provided which will be automatically closed by up-iiowing Water under relatively low pressure; or,` when said pressure is withdrawn, will automatically drop to its lower seat and thus seal the tting against entry of soil seepage when the pressure in the water main is discontinued for any reason.

A valve head 25 has its lower end threaded at 26 in the central portion of the fitting I2, and the upper portion of said valve head is made hexagonal in cross section so that the same may be readily removed through the discharge Apipe Without disconnecting said pipe from said Water main. A valve stem 21 has threaded connection at its upper end with an operating head 28 which in turn has threaded connection 29 with the valve head 25, as shown, and a square valve rod 30 is connected, as shown, with the upper end of the head 28. At its lower end the valve stem 21 carries a control valve 3| adapted and arranged to seat on the valve seat 32 at the lower end of a valve nipple 3 which is threaded in the lower end Y of the valve head 25, as indicated. The valve stem 21 is provided at its lower end with an extension 34 projecting into co-operative contact with the valve |9, and suitable ports 35 are provided in the sides of the Valve head 25 to permit of escape of water into the pipe I3 when the control valve 3| is open, as indicated in Fig. 2. By this arrangement, by turning the valve rod 30, the control valve 3| may be opened or closed as desired. When opened, the extension 34 will contact with the top of the valve I 9, also opening with the valve to permit of the escape of water into pipe I3, as will be readily understood. When the valve head 25 is removed from the discharge pipe, the valve I9 will be released by removal of the extension 34 and will automatically seat against the seat 23, thus sealing the discharge pipe against escape of Water. In this way the control valve and its seat may be readily removed from the hydrant for repairs without disconnecting the discharge pipe from the main. If at any time the water is turned off in the main, the valve I9 will automatically drop to the seat 22, thus sealing the tting I0 against the entry of soil seepage and consequent contamination of the Water supply.

A conical valve 36 is loosely mounted on the stem 21 to seat upon a valve seat 31 in the casing I0, as will be readily understood. As the valve head 25, being yieldingly pressed square socket 4| in the rotatable nipple 42 at the bottom of a wrench head 43, mounted in a socket 44 in the tting I8, and whereby operative connection is afforded with the valve 3l as and when desired.

It will be noted that there is a space between the upper end of the valve rod 30 and the bottom of the socket 4l whereby pounding or blows upon the wrench head 43 will not be communicated to the valve mechanism below and thus preventing consequent damage thereto.

By this arrangement a hydrant construction is provided in which the entire valve unit may be readily removed from the discharge pipe without disconnecting the same from the water main; contamination of the water supply is prevented when the supply in the main is turned oif; injury to the valve parts by pounding or blows at the top of the valve rod is prevented; a check valve is provided which Will operate under low pressure; and a freely rotative check valve is provided which will automatically clean itself during operation. The specific form and arrangement of parts is a simple and effective one for the purpose.

While we have illustrated and described the preferred form of construction for carrying our invention into effect, this is capable of variation and modification without departing from the spirit of the invention. We therefore do not wish to be limited to the precise details disclosed, but desire to cover the variations and modifications included in the appended claims.

We claim:

1. A hydrant comprising a discharge pipe; means connecting the entry end of said pipe with the water main; spaced opposed valve seats in said pipe; a reciprocating check valve arranged between said valve seats to scat against one seat automatically upon outward movement induced by outward flow of water through said pipe, and to seat against the other seat automatically upon inward movement when said flow ceases; a control valve for said pipe; means for automatically opening said check valve when said control valve is open; and means for manipulating said control valve from the discharge end of said pipe.

2. The construction specified in claim 1 in which the control valve manipulating means has free longitudinal movement relatively thereto.

3. The construction specified in claim 1 in which the control valve manipulating means is in the form of a socket Wrench having free longitudinal movement relatively thereto.

4. The construction specified in claim 1 in which the discharge pipe is vertically arranged; the check valve reciprocates vertically therein; and the control valve is located above the upper check valve seat and carries an extension arranged to open the check valve when the control valve is opened.

WALTER. F. TERRELL. ABRAHAM S. FISI-1ER.

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