US236151A - Automatic valve to check the waste of water - Google Patents

Description

(No Model.)

- E. E. FURNEY. Automatic Valve -to Check the Waste of Water. No.236

Patented Jan. 4,1881.

' 71 42); asses:

UNITED STATES PATENT OFFICE.

ELLIOTT E. FURNEY, OF ST. LOUIS, MISSOURI.

AUTOMATIC VALVE TO CHECK THE WASTE OF WATER.

SPECIFICATION forming part of Letters Patent No. 236,151, dated January 4, 1881.

Application filed March 15, 1880. (No model.)

To all whom it concern:

Be it known that I, ELLIOTT E. FURNEY, of the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Automatic Valves to Check the Waste of Water, of which the following is afull, clear, and exact description, reference being had to the accompanying drawings, making part of this specification.

My present invention relates to improvements on the devices referred to in Letters Patent No. 232,483, granted to me on the 21st September, 1850.

The drawings are axial sections of the apparatus, except that the valve and the piston carrying it are in side elevation Figure 1 shows the valve and its piston descending after the hydraulic discharge has been closed; and Fig. 2 shows valve and piston ascending, as they do during the flow of the hydraulic discharge.

I will first describe the parts in general which are found in my former application,and which in the present have substantially the same construction.

A is the outer cylinder or case, of any suitable form, with an ind notion-opening, B, and an eduction-opening, (J. At the inner end of the eduction opening or passage 0 is avalveseat, D, against which closes the valve E, to stop the flow of water after it has flowed for a time. I prefer to make the valve E of-some soft material-india-rubber for instance; but this is not essential. I

The valve E is attached to the top of a piston, F, of greater specific gravity than water, and working freely in a cylinder, Gr, open at top and bottom, and which (the cylinder) I prefer to make vertically movable in the case A, being guided in the case by knobs H, attached to either the cylinder or case and working against the other. In its lower position, as shown in Fig. 1, the cylinder rests upon the bottom A of the case. In Fig. 2the cylinder is shown elevated by the hydrostatic pressure, so that the water flows beneath its edge.

I will now describe the features proper to this application and those modified from the form shown in my former application.

The piston F has one or more circumferential grooves to contain tallow or other material, f, not wetted by contact of water, as by means of such material, even if there is quite a space between the piston and cylinder G,

the water will not pass through the space not that pointand restraining the passage of the liquid by capillary repulsion there, and by the capillary attraction of the piston below. By the use of the described device f the piston may be made to work in the cylinder almost without friction, because the piston need not be closely fitted to the cylinder, and because it is held in position strictly concentric with the cylinder by capillary repulsion. As a valuable result the piston may be made of greater specific gravity, so as to increase the rapidity of its descent in the cylinder on the closing of the hydraulic discharge.

It will be seen that the pressure of the hydrostatic over the hydraulic head has to overcome both the friction and the weight of the valve-piston in the water, (that is, the whole weight of the piston and "alve minus the weight of water displaced and consequently for any decrease in friction addition may be made to the weight of the friction.

I is a stop-ring fixed to the. interior of the cylinder G. lt arrests the descent of the piston in the cylinder.

J is a piston working in the cylinderGr beneath the ring or interior rib I. This piston J is shown made in cup form, to increase its bearing upon the cylinder without adding materially to its weight. In the top of the piston J is a water-orifice, K, to allow the water to enter the spacein the cylinder between the pistons F and J to force the piston'F upward while the hydraulic discharge is open.

L L are-perforations or orifices in the cylinder Gr, communicating from the interior of the cylinder to the water-space M between the cylinder and the case A. The circumference of these holes may be tangential to the upper and lower edges of the piston J in its two positions, as shown in Figs. 2 and 1, respectively. The purpose of these holes is twofold: First, when the piston J is raised by the first flow of water on the opening of the cock or other hydraulic discharge, the water passes through the orifices L to water-space M; second, when the cook or other hydraulic discharge is closed, the piston J drops and the water escapes freely from beneath the piston F, through the orifices L,upward through space M, and into the top of the cylinder above the valve-piston F, so that said piston quickly descends to its lower place. The position of the parts when the cock is opened and the flow going on is shown in Fig. 2, and the position of the parts after the closing of the cock is shown in Fig. 1, the direction of movement of the water and the valve-piston F being indicated by arrows.

It will be understood that when the valve E closes, the pressure beneath will be greater than that above it. This would continue even after the closing of the cock, and would prevent the piston sinking in the water and opening the valve E. To meet the case I use substantially the same expedient described in the former application by the provision of a small hole, 11, in the eduction-pipe above the valveseat. On the closing of the cock a very small flow of water through the orifice n will equalize the pressure above and below the valve, and then-the cylinder being heavier than its bulk of water -it will quickly descend to the ring I.

The operation is as follows: The inductionpipe B, having been connected with the hydrostatic head and the eduction-pipe G with the hydraulic discharge-pipe, and the latter pipe being opened either by opening the dischargecock or by other means, the water rushes through E and raises the piston J until the water is allowed to escape under said piston through the holes L, and to pass through the space M to the eduction-opening C; but at the same time, since the pressure under the piston J is greater than the pressure above the piston F by an amount equal to the weight of both pistons minus the weight of water they both displace, the water will be forced through the small hole K and slowly raise the valve E until it shall close the eduction-pipe G, and then no more water is allowed to escape than can pass through the small hole n. Should the hydraulic discharge have been opened very wide, where the holes L have not area great enough to allow sufficient water to pass, then the pressure beneath the piston J will lift the cylinder G until the required escape has been provided under the lower edge of the cylinder. When there is sutficient head to allow it, the stop-ring I maybe placed lower down, so that when the piston J is raised it will close the holes L, and the whole discharge would be beneath the cylinder G. (In such case the holes L would only have a single purpose-viz., to allow the rapid transfer of water from beneath to abo e the valve-piston F when said piston is descending.) Now, if the hydraulic discharge, which is still going on through the small hole n, be closed by the closing of the discharge-cock, the difierence in pressure above and below the valve E will cease, and the pistons-J first and then Ewill descend to their lower positions ready for another discharge to take place on the opening of the discharge-cock.

I claim as my invention 1. The combination, with the case A, having induction and eduction openings, and cylinder Gr therein, of the orifices L in said cylinder, and piston J, actuated by waterpressure to direct or stop the flow of water through the orifices, substantially as set forth.

2. The combination of case A, cylinder G, movable therein, water-orifices L, piston J, with opening K, and piston F, with valve E, closing the eduction-opening 0, all substantially as and for the purpose set forth.

3. The combination, with the piston F, of the circumferential surface or surfaces J, devoid of capillary attraction for water, for the purpose set forth.

ELLIOTT E. FURNEY.

\Vitnesses:

SAML. KNIGHT, Gno. H. KNIGHT.

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