US852819A - Valve. - Google Patents

Description

APP-LIOATIOH FILED JAlLlB, 1905.

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ATTORNEYS THOMAS BRICK,VOF NEW YORK, N. Y.

VALVE.

Specification of Letters Patent Patented May '7, 1907.

v Application filed January 18,1905. Serial No. 241,569-

To all whom it may concern:

Be it known that I, THOMAS BRICK, a citizen of the United States, and a resident of the city of New York, Long Island City, borough of Queens, in the county of Queens and State of New York, have invented a new and Im roved Valve, of which the following is a ful clear, and exact description.

The object of the invention is to. rovide a new and improved valve, designed or use as a reducing-valve, safety-valve, equalizingvalve or a high or low ressure valve for steam, water or other fluid, the valve being simple and durable in construction and arranged to dispense with the usual packing, at the same time avoiding leakage and insuring at all times a proper and accurate working of the valve.

The invention consists of novel features and arts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims. Apractical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, 1n WhlCh similar characters of reference indicate corres onding parts in both views.

igure 1 is a sectional side elevation of .the improvement; and Fig. 2 is a side elevation of the bushing, parts being broken out.

The valve-casing A is provided with an inlet A, and an outlet A standing at an angle to the inlet'A, and the said valve-casing 1s rovided with an enlarged bore A into whlch i its a bushing B provided with o enings B and B of which the opening registers with the inlet A and the opening B registers with the outlet A. A valve-seat B is formed at the opening B, and the top of this valve-seat is preferably flush with the bottom of the opening, B registering with the outlet A In the bushing B is mounted a piston-valve C, normally seated at its lower end in the valve-seat B, and the said valve is ada ted to slide upward in the bushing, accor ing to the pressure of the fluid entering the inlet A, so that the valve 0 controls both openings B and B that is, the flow of the fiuld from the opening A to the outlet A The upper portion, that is, the part above the opening B is provided with suitable metalhc packing-rings D, to prevent leakage into the bushing B, ast the pistonvalve C. The valve-stem of the istonvalve C extends through a sleeve F avlng an external screw-thread engaging a flange G fastened by bolts H to the end of the valvecasing A, and the said threaded sleeve F is provided at its upper end with a ploygonal portion F for the convenient application of a wrench or other tool, to allow of screwing the sleeve F up or down in the flange G. When the sleeve F has. reached the desired osition, then it is locked against movement 1n the flange G by a suitable jamnut F On the stem E inside of the bushing B, is

piston-Va ve C and abutting with its other end on a washerJ restin on the inner end of the sleeve F it being un erstood that by adjusting the sleeve F, that is, screwing the same in or out of the flange G, any desired tension can be given to the s ring I, according to the use made of the va ve at the time.

--The bushing B is seated at its lower end upon a flat seat A of the casing and abuts at its upper end against the flange G. It is also exteriorly provided near its .upper end with a conical portion B seated on a counterpart seat formed at the upper end of the casing. The seats at A and B are tightly fitted, preferably by grinding at the same time in the usual manner so that both will be fluid tight. When therefore the flange G is forced down %on the bushing B by tightening the bolts all leakage of fluid between the inlet and outlet and between the bushing and casing is completely prevented. that the upper end of the bushing B is provided with a flange B which is also shown as seated against the top of the casing, whereby its bearing against the flange G is increased in extent, and that the flange G is shown as having a tubular extension projecting down 'into the bushing B, whereby the length of the threaded bearing of the sleeve F is increased. These features are of advantage but not are essential.-

By the arrangement described, the fluid passing under pressure into the inlet A acts on the spring-pressed piston-valve C, and when the pressure is suflicientto overcome the tension of the spring I, then the pistonvalve C opens and the fluid can pass to the outlet A and when the pressure falls below the tension of the spring I, then the latter causes the piston-valve C to close immediately, thus forming the valve into a reducing-valve. In case the piston-valve should stick it can be lifted by a suitable handle E I on the outer end of the valve-stem E.

The valve may be used for various pur- It will be notedcoiled as ring I resting with one end on tlie poses, and hence I do not limit myself to the particular use mentioned or to the particular construction shown and described, as the same may be varied without deviating from the spirit of my invention.

The improved valve is very simple in construction', and in case the bushing is worn out it can be readily replaced by a new one without disturbing the valve-casing A.

Instead of using the valve in the manner described it may be so arranged that the flow of the fluid is reversed, that is, passes in at the opening B and out through the seat B and the opening A; the piston-valve C in this case not being controlled by the pressure of the fluid but by external means, such as levers, etc. a

Having thus described my invention, I claim as new and desire to secure by Letters Patent: v I A valve comprising a valve casing having an enlarged bore and provided with an inletand an outlet for the fluid, a bushin removably fitting the enlarged bore of t e valve casing and having openings registering with the inlet and outlet, a flange abutting against the top of the bushing a flange upon the easing in proximity thereto, and adjustable means for drawing the two flanges together, the bushing being seated at its lower end against the valve casing and having a part projecting between the flanges and seated down upon the top of the casing, and a pis-' ton valve in the bushing and fitting fluid tight above the inlet and outlet openings, the bushing having formed thereon the seat for the valve, substantially as described.

In testimony whereof I have signed my

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