US638740A

US638740A - Automatic tank-valve.

Info

Publication number: US638740A
Authority: US
Inventors: John T Morrison
Original assignee: Individual
Current assignee: Individual
Priority date: 1899-02-17
Filing date: 1899-02-17
Publication date: 1899-12-12
Anticipated expiration: 1916-12-12

Description

Patnted Dec. I2, |899.

.1. T. MORRISON.

AUTUMATIG TANK VALVE.

(Application led Feb. 17, 1899.)

llaman STATES JOHN T. MORRISON, OF MINNEAPOLIS, MINNESOTA.

AUTOMATIC TAN K-VALVE.

SPECIFICATION forming part of Letters Patent No. 638,740, dated December l2, 1899.

Application led February 17, 1899. Serial No. 705,761. (No model.)

T all wwnt t may concern:

Be it known that l, JOHN T. MORRISON, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Automatic Tank- Talves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an automatic tank-valve of improved construction, and it relates particularly to that type of automatic valve which is operated by' a float to control an intermittent ow of water into a flushing-tank.

The invention consists of the novel devices and combinations of devices hereinafter described, and defined in the claims.

The preferred form of the invention is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views.

Figure l is a view principally in vertical transverse section, but with some parts shown in full, illustrating my improved valve mechanism applied to an ordinary iiushing-tank, some parts of said tank being broken away. Fig. 2 is a similar view to Fig. l, but illustrates different positions of the parts; and Fig. 3 is a view, partly in side elevation and partly in vertical section, on the line x3 ac3 of Fig. 2.

The numeral l indicates an ordinary iiushing-tank adapted normally to contain a body of water e', the normal level of which is indicated in Fig. l. My improved valve mechanism controls the supply of water to this tank, and in its preferred form the valve involves a faucet-like or tubular body, (indicated as an entirety by the character (1,) being composed of two sections o. and a2 and an interposed thirnble-like valve-seat co3. In this preferred construction the valve-seat d3 has screw-threaded ends which work in corresponding internal threads in the adjacentends of the sections d and a2, and it is here very important to note that the said valveseat has valve engaging or seating surfaces a4 at each end, thus adapting it to be reversed end for end for a purpose to be her'aftx` more thoroughly considered. The faucetsection d2 has a shoulder d5, which engages a packing ring or washer o6 to form a watertight joint with the bottom of the tank l, and the lower portion of this section d5 depends through the bottom of the tank l and is provided with screw-threads, on which a nut a7 works to clamp the same in working position. The lower end of the section o2 is in comn1unication through suitable connections (not shown) with a water-main or other suitable source of water-supply.

Rising from the upper portion of the section a is a yoke-like bracket or support l) b', the side as shown, being removably held in place by a screw b2.

A valve-stem c is mounted to reciprocate vertically in a suitable seat formed in the upper portion of the faucet-section a', with its depending lower end working axially through the valve-seat thimble a3 without engagement therewith. At its upper end and between the sides of the bracket b h the valve-stem cis formed with an eccentric-strap or flattened head c', in which a transversely-extended seat c2, having parallel upper and lower edges, is cut or formed. The rear wall of said eccentric-seat is made straight, and thus serves as a stop for the eccentric to prevent undue turning thereof as the valve opens, as will be clearly apparent from Fig. 2. At its lower end the valve-stem cis provided with avalvehead or ball c3, which is preferably of rubber and which, as shown, is clamped between a shoulder cland a nut c5 on the said stern. It is very important to here note that in virtue of the above construction the valve-head c3 is so disposed that it will be closed by the pressure of the water flowingl or tending to flow into the tank.

Working within the seat c2 in the head or eccentric-strap of the valve-stem is an eccentric f, which is rigid on a shaft or pin f', mounted in the sides of the bracket b b. This shaft f is provided with a hub or collar f2, that is adjustably secured thereto, as shown, by means of a set-screw f3. t

Rigidly secured to and projecting from the hub or collar f2 is an arm g, the outer end of which is turned upward to form a stem-section g', the upper end of which is screw- `threaded and is provided with a nut g2.

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lVorking on the stem g', below the nut g2, is an air bulb or float g3, which is free to move up and down between the said nut g2 and the end of the arm g.

The operation of the valve mechanism above described is substantially as follows: Normally the tank l is partially filled with water-for example, asillustrated in Fig. l-and under this condition the float g will be raised and will hold the valve-head cS in its closed position, tightly pressed against the coperating seating surface CL4 of the valve-seat thimble or section d3. In this closed position the pressure of the water in the faucet-section ce2 will cooperate to hold the valve c3 in its closed position. Then the water is drawn 0H from the tank l, as by means of a iiushingvalve, (not shown,) the fioat g3 will begin to lower as the level of the water lowers; but the valve-head c3 will be held closed by the pressure of the water against it until the said fioat falls against the free end of the arm g, and then the said valve-head c3 will be quickly moved into its open position, as indicated in Fig. 2. As is obvious, when the valve-head c3 is in its open position water may readily iiow into the tank l through the faucet a and the tank will be again charged with water. The initial upward movement of the fioat g3 will move it on the stem g unt-il it is brought into engagement with the nut g2, and then the further upward movement of the oat will raise the arm g and move the valve-head c3 back into its closed position. Thus it will be seen that the valve-head c3 is moved into its open positionby the final portion of the floats downward movement and will be moved into its closed position by the final portion of the said iioats upward movement. Furthermore, it is important to note that by adjusting the nut g2 on the screw-threaded stem g the valve may be set to close at any desired altitude of the column of water z. The eccentric f always keeps engagement with the seat c2 in the head of the stem c, and thus positively forces the valve c3 in both direc- -tions in which it moves it and at all times keeps the said valve-head from jumping or vibrating. B v adjusting the hub or collar f2 on a shaftf' the valve-head c3 may be set for any desired clearance with the cooperating surface a4 when opened.

It is a well-known fact that the action of the water and the small particles of sand or dirt usually carried thereby in passing under high pressure between the open valve-head and its seat will in time cut and wear the cooperating surface of the valve-seat, thus in time often rendering the same useless. As one feature of my present invention, which feature has been already noted, I make the valve-seat or thimble-section a3 reversible end for end, and thereby double the length of the life of the same. However, with the arrangement whereby the valve-head or valve proper closes with the pressure of the water which passes through the faucet or valve device, the valve being more quickly and positively closed, less wear is put upon the valveseat than has been the case in prior constructions, wherein the valve is caused to close against the pressure of the iniiowing water.

It will of course be understood that my invention above described is capable of many modifications iu the details of its construction.

lVhat I claim, and desire to secure by'Letters Patent of the United States, is as follows:

l. The combination with the tank, of an inlet-Valve casing provided with the yoke-like guide-bracket, having one of its sides removable, the valve in said casing having the strap on the protruding part of step guided by the yoke-like bracket, a float in said tank provided with an eccentric working within the strap, said strap having a straight portion to form a stop for the eccentric.

2. The combination with the tank, of an inlet-valve casing extended upward beyond the outlet-opening therefrom, a valve in said casing, and means to control said valve comprising a lever ghaving an upturned arm, a float freely sliding on the upturned arm of said lever, means on-said arm to adjust the extent of upward travel of the float, and connections between the opposite end of the said anglelever and the valve.

3. The combination of a tank, of an inletvalve casing extended upward beyond the outlet-opening, a valve in said casing having a stem extending upward therefrom and formed with an eccentric-seat, one of the walls of which acts as a stop to prevent undue turning of the eccentric, an arm secured to said eccentric and a float operative by the water in the tank to move the eccentric.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN T. MORRISON.

Witnesses:

M. M. MCGRORY, F. D. MERcHANT.

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