US1154582A - Hydrant. - Google Patents

Description

A. HALLOWELL.

HYDRANT.

APPLICATION FILED MAY 20, 1912. 1,154,582.

4 SHEETS-SHEET l.

WITNESSES.-

' MVENTOR: (2% M BY M 26 ATTORNEY.

COLUMBIA PLANOGRAPH 60.,WASMINOTON. D. c.

Patented Sept. 21, 1915.

A. HALLOWELL.

HYDRANT.

APPLlCATION FILED MAYZO, 1912.

1 154,582., Patented Sept. 21, 1915.

4 SHEETS-SHEET 3.

WITNESSES; LQ INVENTOR. W BY 6 4 A TTORNEY.

A. HALLOWELL.

HYDRANT.

APPLICATION FILED MAY 20 I912.

Patented Sept. 21, 1915.

4 SHEETS-SHEET 4 WITNESSES: INVENTOR.

Jfivwzd 2 623 ATTORNEY.

s UNITED TATES PATENT OFFICE.

ALBERT HALLOWELL, 0E LOWELL, MASSACHUSETTS, assreivon To WILLIAM S. A1V[S01\T, or LOWEL MASSACHUSETTS; MARY A; LAMsonExECUTRIX or SAID WILLIAM S. LAMSON, DECEASED.

IIYDRAN Specification of Letters Patent.

Patented Sept. 21, 1915.

Application filed May 20, 1912. Serial No. 698,407.

valve before an additional hose can be at tached makes it of Considerable importance to provide means for opening and closing the inlet-valve as quickly as is possible without injury by water-hammer as a fraction of a minute may allow a fire to get beyond control; In such hydr'ants,when1 some of the nozzles are open, the pressure of tie water in the main with which the hydrant is connected is so great that, a sudden closing of the inlet-valve of Said hydrant is liable to burst the main or the connection between the main and the hydrant. or to cause them to be strained and leak, owing to thewater hammer or concussion caused by the sudden stoppage of the rapidly flowing water, there being usually no air-cushion in the hydrant. For this reason it is usual to provide slowly acting means for admitting the water to such hydrants and for shutting off therefr0in, as a slide-"gate operated by a screw of fine pitch. Some hydrants are provided with vnozzles which may be opened and closed independently of each other, So that when. the inlet-valve is once' opened, it may remainopen until after all the nozzles are closed by their individual valves or gates.

Substantially all hydrants however, are

provided with a waste-valve which opens simultaneously with the closing of the inletvalve, so that the water pressure is being lessened within the hydrant above the inletvalves before the inlet-valve is closed.- This invention is intended forluse'in hydrants in which an independent valve or gate is provided with each nozzle. 7

The object of this invention isfl'toenable the inlet-valve to beclosed rapidly and to maintain an equal pressure on both sides of the valve until the valve is closed and to operate the waste-valve the same maniptt lation used in closing the inlet-valve, but postponing the opening of the waste-valve until the closing of the inlet-valve is completed.

In the accompanying drawing on four if sheets, Figure l is a side elevation of a hydrant provided with my improvement with a part of the inlet-connection; Fig. 2, an

elevation of the otherside of the same with F V hose attached, parts of said hydrant and inlet-connection being broken away and the lower portion of the hydrant and inlet-connection and the (open) outlet-valve being in central crosssection on the line 2 2 in Fig. 9, and the inlet-valve being in vertical section at the left of said Fig. 9 on the line 2 2% Fig. 3, Shows the upper part of the hydrant in side elevation and the lower part of the hydrant including the (opened) inlet-valve and the waste-valve in vertical section on the line 3 din Fig. 8, and also the inletrconnectionincentral vertical section; Fig. l, a plan of the inlet-valve and its opcrating Stem; Fig. 5, a plan'of the same, omitting the stem, Fig. 6, an outside elevation, of the waste-valve and adjacent parts of the hydrant; Fig. 7, aside elevation of the waste valve detached; Fig. 8, is a hori zontal section on theline 8 8 in Fig. 3; Fig.

The remaining figures Show a modification in'which the inlet-valve projects below the body of the hydrant and the inner shell of said valve turns, instead of the outer as 9, a horizontal section on the 99 in Fig.2.

shown in the preceding Figs. 10 and 11 being central vertical sections of the hydrantbody, the inlet-valve and the Waste-valve on the axis of the latter, the inlet-valve being open and the wastevalve being closed in Fig. 10 and'the relative positions of said valvesbeing reversed in Fig. 11; Figs. 12

and 13, respectively, horizontal sections on the lines 12 12 in Fig. 10 and 13 13 in Fig. 11.

pendently controlled nozzles, Figs. 1, 2 and ,3, may be'of usual construction, except as hereinafter stated, having a tubular body A which extends upward from below the ground level B (Figs. 1 and 2) and is connectea below the frost line with the water main I by aninlet-connection 1 in substantially I the usual manner. The lower end of the hydrant-body isgclosed by a plate 0, having a The posthydrant provided with indeend d and a lateral opening al which may age.

be brought into or out of registed with the opening 0 by turning said outer member.

The inner member 0 is represented as provided on top with a central externally screw-threaded stud c which projects upward through a central opening (Z in the top of said outer valve-member and has a flattened side 0 (Fig. 5) to prevent a washer E (which surrounds and fits said stud) from turning thereon. A nut F (Figs. 3 and 4) turning on said stud crowds the outer member D down upon the inner member C and prevents leakage. When the openings 0 d register with each other, the water passes freely from the water main I and connection I to the discharge nozzles H which may be of any usual construction which will allow of their being opened and closed independently of each other.

The inlet-valve is operated by a long stem T or rod which is provided at its lower end with a square or many-sided socket t which engages a corresponding projection d on the top of the member D, and said stem at its upper end is provided with a head 25 which projects through the top of the hydrant-body and above said body is adapted to be engaged and turned by a wrench, in an obvious manner. The stem T passes verti cally through one or more centrally arranged stuffing-boxes 25 to prevent leak- The lower part of the outer member D of the inlet-valve is provided with stops d 03 which are represented as the ends of a slot D formed concentrically with said member in a flange D which projects horizontally therefrom, which stops as the stem and member D are turned strike against a stud a which projects upward through said slot D andis rigidly secured to the plate a, in such a manner that when said stud a is against the end (Z of said slot D (Fig. 8) the openings 0 d register with each other but when said stud a is against the other end d of said slot, said openings are out'of register and the opening al has moved farther from the opening 0 than is necessary to shut oifvthe water, the excess movement being for the purpose of operating the waste-valve J.

The wa'ste-valve'J is represented as having a tubular body y' or shell which leads radially out of the hydrant-body and is jecting rib with parallel sides, said cam having a rest k or portion concentric with the flange D which holds the waste-valve closed when the inlet-valve is open (Fig. 8) and until said inlet-valve is entirely closed and having an eccentric portion which curves inward from the rest 7 and begins to draw the valve-proper j away from its seat after the inlet-valve is fully closed and continues to open the waste-valve until the outer member D of the inlet-valve comes to rest as shown in Fig. 9. Obviously the first effect of the turning of the member D of the inletvalve from the position shown in Fig. 9 to -that shown in Fig. 8 will be to close the waste-valve before the openings 0 d of the inlet valve begin to lap over each other, so that no water will run through the Wastevalve and the full pressure will be at once secured within the hydrant. When the outer member of the inlet-valve is turned in.

the opposite direction fromv that just described the pressure within the hydrant is the same as in the main so there can be no waterhammer, assuming of course, that the nozzles are then closed, and the waste valve does not begin to open until the inletvalve is still closed.

seat Z and allows the water to pass out' 7 through the nozzle to the hose N. When the hose is removed from the nozzle the valve Z is forced to its seat by the pressure of the water in the hydrant or by a spring.

In the modification shown in Figs. 10-13, the inlet-valve is inverted and the outer member D is rigidly secured in a plate a which serves the same purpose as the plate aand different from the latter only in having its central portion within the hydrantbodyraised as near as possible to the wastevalve to diminish the amount of water. which may be left in the hydrant below the bottom of the'waste-valve to lessenthe possibility of the freezingv up of the hydrant.

In these last-named figures the inner valve member 0 is turned by the connection .of the stem T to arc-shaped bars 0 which extend upward from the larger end as shown at 0 to one or more of which bars 0 is connected a hook 0 which engages the notch j in the stem 7' of the waste valve, said stem being inverted from the position shown in Fig. 7. The other parts shown in Figs. 10-13 are like those herein previously indicated by similar letters ofreference.

I claim as myinvention: I

1. In a hydrant, a casing, an inlet valve therein having ported stationary and rotary members, a flange formed concentrically on the rotarymember and having stop shoul-' ders, a projection on the casing engageable with said shoulders, a cam on one side of the flange and having an operative part and a rest part, a waste valve in the casing and having movement radially with respect to the aXis of said inlet valve and being engaged with said rest part of the cam when the inlet valve is open and by said operative part of said cam when the inlet valve is closed.

2. In a fire hydrant the combination with a casing of means for conducting water to said casing, an inlet valve for controlling the flow of water through said casing, said valve having ported stationary and movable members, means for limiting the movement of said'movable member, a cam carried by said movable member and comprising a part eccentric thereto and a part concentric therewith, said casing having a waste passage formed therein and a valve for said passage, said valve comprising a plunger projecting within said casing, said plunger having a transverse groove thereacross with which the edge of said cam engages in such manner that the valve is held in its closed position by the concentric part of the cam when the inlet valve is open and is held in its open position by the eccentric part of the cam.

when said inlet valve is closed.

7 In witness whereof, I have afiiXed my signature in presence of two witnesses.

ALBERT HALLOWELL. WVitnesses:

ALBERT M. MOORE, GRACE CROWLEY.

' Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

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