US935373A - Valve for hydrants, stand-pipes, and the like. - Google Patents

Description

H. s. LANGE. VALVE FOR HYDRANTS, STAND PIPES, AND THE LIKE.

APPLICATION FILED FEB. 16, 1909. v

Patented Sept. 28, 1909.

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H. S. LANGB.

VALVE FOR HYDBANTS, STAND PIPES, AND THE LIKE.

APPLICATION FILED FEB.16, 1909.

' 9355373. Patented Sept. 28, 1909. 2 SHEETS-SHEET 2.

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HANS STEENBU'Cl-I LANGE, OF CHRISTIANIA, NORWAY.

VALVE FOR HYDRANTS, STAND-PIPES, AND LIKE.

Application filed February 16, 1909.

To all whom it may concern:

Be it known that I, Hans Srsnnnuon LARGE, manuii'acturer, citizen of Norway, residing at the city of Christiania, Norway, have invented new and usctul Improvements in Valves for Hydrants, Stand-Pipes, and the Like, of which the following is specification.

In hydrants, stand-pipes and too like hitherto used, the valve or valves through which the water under pressure is supplied are usually arranged in the lower portion of that part of the hydrant which is buried in the earth. If such valves are to be inspected or repaired they must be arranged in such a manner that they can be reached from the outer protecting casing. For this purpose, however, the water under pressure must be first cut-ofl either by a cut-oli cock specially inserted in the conduit to each hydrant or by a cock common to all the hyilrants of a group. Both of these arrangements are inconvenient, especially that last mentioned, because all hydrants in the group are thrown out of operation when one of them is to be inspected or repaired.

The present invention has for its object to obviate the inconveniences above mentioned, and this desideratum is obtained by the provision of the construction hereinafter described in which the hydrant valve proper may be lifted up immediately after having been brought into stopping position.

The invention is illustrated in the accompanying drawings, in which Figure l is a vertical section on the line Il in Fig. 2 through the lower portion of that part of the hydrant or stand-pipe which Fig. 2 is a horizontal section on the line IIII in Fig. 1. Fig. 3 is a vertical section on the line IIIIH in Fig. 2, and Fig. is a section of the valve proper on the line IVIV in Fig. 3.

According to the present invention an auxiliary valve' 2 opening downward is arranged beneath the main or proper hydrant valve 1 and separated from the same. The purpose of this auxiliaryvalve is to cut off the connection between the upper chamber 8 leading to the main valve l and the lower chamber l connect ed through the lateral supply 5- with the conduit for the water under pressure. In the drawing the hydrant is shown provided with two independent outlets -A- Specification of Letters Patent.

Patented Sept. 25%, 1909.

Serial No. 478,285.

and B and special valves for each of them. The auxiliary vaire is arranged on a guiding stem -G- and is normally prc sed up against its seat 8 by the helical spring T. On its upper side the valve carries an upright projection -t which does not come in contact with the projection -lt on-the main valve -lwhen th latter is closed (Fig. In this osi tion obviously the admittance of the water under pressure to the chamber -23 is prevented by the auxiliary valve which takes up this position automatically as soon as the mainvalve is suliiciently near its out oti' position (see the left hand side of Fig. l). lVhe'n the *alve l is opened, however, its projection -10 strikes against the projection -9 and forces the auxiliary valve downward against the action of the spring T and of the water under pressure. 7 The water then can flow up into the chamber I:3 and, further, past the valve lbetween its guides l1, l2 and past the nut -13- oi the guiding cross-head into the outlet the right hand side of Fig. 1).

The guides 12 of the-main valve l are each made hollow so as to form a chamber 1l, the radial side walls of which are provided with a series of holes 15 and the outer wall of which is provided at the base with a single aperture or port -l6, communicating with a channel 17, in the valve seat -1S when the valve assumes its cut-oil position (Fig. 3). The channel 17 leads to cloaca and its purpose is to draw off any water which may remain in the outlets after the hydrant has been used. This emptying takes place by way or the chamber 14 hole 15, ports 16 and channels 17, so that the possibility of water freezing in the hydrant is prevented. If mud, sand or the like should partly obstruct the holes 15, the water under pressure, as soon as the hydrant is opened, will cleanse or rinse the holes 15 during its passage through the ports 16, the chambers 14 and said holes.

The main valve is operated by the stem 19 by means of athrcaded sleeve 20, 2l, into the upper squared hole of which projects the squared lower end 22 of the stem 19-. The upper part 20 of the sleeve is formed on its exterior with rela tively coarse screw-threads -23 adapted to turn in the nut -13 provided interiorly with corresponding screw threads. The lower part 21 of the sleeve 20 is provided with relatively fine screw-threads 2-l and is screwed into the correspondingly threaded hub 25 of the main valve l. The rotation of the valve 1- is prevented by stops, such as small pins 26 engaging the ribs 27 of the guiding cross-head. By means of this arrangement of the sleeve -20, 2l, the valve 1- can be opened by the desired number of rotations of the stem 19 without the necessity of employing fine and consequently weak screw-threads, the movement of the valve by each revolution depending only upon the diiference in the pitches of the threads and 2 The outer walls of the chambers -14 preferably consist of angular pieces (Figs. 3 and a), the vertical parts -28 of which are tightly fitted into grooves provided in the end edges of the side walls as shown in Fig. 4 and the horizontal parts 29 of which project over the upper edges of the ribsof the guide -12 and are attached by screws 30. The latter pass through oblong holes providing free spaces -31, so that the angular pieces are forced out against the edges of the seat 1S* by the pressure of the water in the chamber 14l:-

-(see Fig. 3).

Having now described my invention, what I claim as new and desire to secure by Let-- ters Patent is 1. In a hydrant, the combination of a valve seat having a side passage therein, a main valve, guides on said valve, some of the guides having chambers therein, said guides having passages therein connecting the chambers with the interior of the hydrant, and a lower passage connecting the bottom of the chamber with said side passage when the valve is in closed and nearly closed position.

2. In a hydrant, a casing having an outlet therein, a valve seat having a side passage communicating with said outlet, a main valve, guides on said valve, two of the guides having chambers therein, said guides having passages therein connecting the chambers with the upper portion of the casing, and a lower port connecting the chamber with the side passage when the valve is in closed or nearly closed position.

3. I11 a hydrant, the combination with a valve seat having a side passage therein leading to the exterior of the hydrant, a main valve, guides on said valve, some of said guides comprising perforated, radial side walls, and an end wall forming a cham her, said end wall having a port at its lower end communicating with the side passage when the valve is in closed or nearly closed position.

4-. In a hydrant, the combination of a valve seat having a side passage therein communicating with the exterior of the hydrant, guides for said valve, two of the guides having chambers therein, each comprising perforated radial side valls, and a radially movable end wall, said side walls having grooves at their outer end for guid ing the end wall, and said end wall having a port at its lower end communicating with the side passage when the valve is in or nearly in closing position.

In a hydrant, the combination of a valve seat having a side passage therein, leading to the. exterior of the hydrant, a main valve, said main valve having passages therein, placing the upper valve casing in communi cation with the side passage when the valve is in or nearly in closing position, an inwardly threaded hub 2-5 on the valve, a fixed nut 13 above the valve, a screw sleeve 20 having a lower part 21 with relatively fine screw threads thereon, screwing in the valve hub 25, said sleeve having relatively coarse screw threads thereon screwing into said fixed nut, said sleeve 20 having a polygonal hole therein and thevalve stem having a lower polygonal part passing into said hole.

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

HANS STEENBUCH LANGE.

itnesses RICHARD STOKKE, lWIAGNns Fnaas Buses.

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