US178469A - Improvement in check-valves - Google Patents

Description

S. RUE.

CHECK-VALVE. N.o.178.469. Patented June 6,1876.

UNITED STATES PATENT SAMUEL RUE, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN CHECK-VALVES.

Specification forming part of Letters Patent No. 178,469, dated J one 6, 1876; application filed February 24, 1876.

To all whom it may concern:

Be it known that I, SAMUEL RUE, of the city and county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Cheek-Valves; and I do hereby declare the following to be a clear and exact description of the nature thereof, sufficient to enable others skilled in the art to which my invention appertains to fully understand, make, and use the same, reference being had to the accompanying drawings, making part of this specification, in which- Figure 1 is a central longitudinal section of the valve embodying my invention. Figs. 2 and 3 are similar views ofmodifications thereof.

Similar letters of reference indicate corresponding parts in the several figures.

I have found that the sticking up of valves is, in a great measure, due to the rotary or whirling motion of the water in the valve, whereby the force is exerted under the valve before it gets to its seat. In order to obviate this defect I change the current of the water from rotary to a perpendicular or horizontal right-line action, and lead it against the upper or inner face of the valve in such a manner that the valve is forced to its seat before the water can have any lateral force acting under the valve.

Referring to the drawings, A represents the shell or body of the valve; 13, the branch leading from the water-supply, and O the branch leading to the boiler. D represents an annulus, constituting a partition or wall, which extends transversely within the shell A, so asto form therein chambers a a on opposite sides of the partition. E represents the valve, and F a plug, which is fitted within the shell.

In Fig. 1 the plug is hollow and fits closely the inner circumference of the annulus, and the walls of the plug are formed with openings b b, of which the openings b communicate with the chambers a, and the openings b with the chamber a, whereby the water returning from the boiler by the branch 0 enters the chamber a, passes through the openings b into the interior of the plug, and is thus forced against the valve perpendicularly, and at right angles to the inner face of the valve, this plug performing the whole action on the water, the annulus acting only as a partition 'to allow a larger chamber around the plug.

In Fig. 2 the plug fits closely the inner circumference of the annulus, and said plug is hollow and water passes therethrough, and is thus directed perpendicularly and at right angles to the inner face of the valve, the same as in Fig. 1, the annulus acting as a partition. In Fig.3 a space exists between the plug and the annulus, answering the purpose of both openings b and b in Figs. 1 and 2, the plug serving as a guide for the stem of the valve; but the valve may be otherwise guided to and from its seat d and the plug otherwise constructed, the plug and annulus both acting as deflectors or guides for the water.

Inthe several figures the valves are shown closed from the boiler.

It will be seen that, as the water under pressure from the boiler returns to the chamber 0 it receives from its contact with the rounded sides of the valve a motion which is rotary or whirling, and exerts its force on the valve unequally, and in this state it would ordinarily pass with a curved motion toward the branch B in advance of the downward motion of the valve, as shown by the dotted figure and thus exert a force under and prevent the closing of the valve, holding it balanced, this constituting what is known as the sticking up of the valve; but the annulus and plug interpose an obstacle to such action, for they deflect the water from its rotary motion or tendency to a perpendicular or horizontal right-lined movement directly against the inner face of the valve, whereby the latter is quickly driven to its seat and closed before the water gets under and exerts any lateral force. In the reverse action of the valve, when the water is forced against the under part of the valve it raises it as far as the plug will allow, and the water enters the openings b b, and so through into the boiler.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A check-valve having an interior deflector, whereby the currents of water from the boiler are forced from a rotary action to a perpendicular or horizontal right-line action on the valve before it can obtain any lateral against the upper or inner face of the valve, motion, substantially as described. substantially as and for the purpose set forth.

2. The annulus D and plug F, in colnbina-' SAMUEL RUE. tion with a valve, whereby the rotary motion Witnesses: of the water is changed, and it is directed in JOHN A. WIEDERsHEI-M, aline at right angles to and strikes directly A. P. GRANT.

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