US2010194A - Valve - Google Patents

Description

Patented Aug. 6, 1935 PATENT OFFICE VALVE Ferrell Thomas McNeelan and Jimmie L. Garrison, Overton, Tex.

Application April 6,

2 Claims.

The present invention relates to new and useful improvements in valves for use particularly in water feed lines to boilers such, for example, as are used in connection with oil well drilling rigs but it will be understood, of course, that a valve in accordance with the present invention may be used for any purpose for which it may be found adapted or desirable.

It has been found that when the valve in a boiler feed line is nearly closed, as when but a small flow is desired, considerable damage is done to the valve seat and head, much more so than when the valve is substantially fully opened, thus rendering premature repairing or replacement of the valve necessary. To overcome this it has been the practice to provide a large or main valve in the feed line and construct a by-pass therearound, said by-pass having interposed therein a comparatively small valve of sufiicient capacity to meet the usual requirements when the main valve is closed.

The primary object of the present invention is to eliminate the necessity of the aforementioned by-pass and by-pass valve by providing, in a single unit or device, a main or large valve which may be opened when desired, together with a second valve of comparatively small capacity which may be opened when the main valve is closed to meet the usual requirements.

Another important object of the invention is to provide, in a manner as hereinafter set forth, a valve of the aforementioned character which may be expeditiously disassembled when necessary to permit the parts thereof to be repaired or renewed.

Other objects of the invention are to provide a valve of the character described which will be comparatively simple in construction, strong, durable, highly efficient and reliable in operation, compact and which may be manufactured at low cost.

All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views, and wherein:-

Figure 1 is a view in end elevation of a valve constructed in accordance with the present invention.

Figure 2 is a view in side elevation thereof.

Figure 3 is a vertical sectional view, taken substantially on the line 3-3 of Figure 1.

Referring now to the drawings in detail, it

1935, Serial No. 15,131

will be seen that the embodiment of the invention which has been'illustrated comprises a body I having a replaceable seat 2 therein. Rising from the body I is an internally threaded neck '3 in which an annulus 4 is threadedly engaged. The end portions of the body I are internally threaded, as at 5, for connection with the pipes.

Integral supports '6 rise from the annulus 4 and have formed integrally with the upper ends thereof a ring 1. Journaled in the ring 1 is a 1 sleeve 8 having an actuating wheel 9 secured thereon by screws l0. The ring 1 is'provided with an internal flange II and the sleeve 8 is rotatably secured in said ring I through the medium of an external flange l2 which is provided on said sleeve 8 and which is engaged be-- tween said flange II and a retaining ring [3 which is secured by screws [4 on said ring I, as illustrated to advantage in Figure 3 of the draw- 1ngs.

A tubular stem I5 is threadedly mounted in the sleeve 8 and extends slidably through the annulus 4. Threadedly mounted in the lower end portion of the tubular stem I5 is a valve head l6 which is engageable with the seat 2. The annulus 4 is provided with an internal flange IT at its lower end for supporting a packing l8 which prevents leakage around the tubular stem l8. A gland I9 is provided for the packing l8, said gland l9 being secured in position by screws 20.

The valve head I6 is provided with a central passage 21 the upper end portion of which is formed to provide a seat 22. The lower portion of the tubular stem 15 has formed therein a plurality of ports 23 which communicate with the passage 2| through said tubular valve stem.

Threadedly mounted in the tubular stem I5 is a stem 24 having fixed on its upper end an operating wheel 25. Swivelly mounted on the lower end of the stem 24 is a valve head 26 which is engageable with the seat 22. A packing 21 is provided for preventing leakage around the inner valve stem 24. A ring 28 encircles the stem 24 beneath the packing 21. The reference numeral 29 designates a packing nut for the packing 21 which is threaded in the upper end portion of the tubular stem IS. A pair of complemental plates 30 are clamped, as by bolts 3|, on opposite sides of the tubular stem I5, said plates being engageable with the supports 6 for retaining said tubular stem [5 against rotation.

It is thought that the operation of the invention will be readily apparent from a consideration of the foregoing. When the head I6 is engaged on the seat 2, the valve 26 may be opened by simply screwing the stem 24 upwardly, thus permitting a flow of water which is usually sufiicient. However, when a flow of water which exceeds the capacity of the passage 2! is desired, it is only necessary to raise the valve head l6 by rotating the sleeve 8, thus elevating the tubular outer stem 55 on which said valve head I6 is mounted. From the foregoing it will be seen that either of the valves may be opened or closed independently of the other.

It is believed that the many advantages of a valve constructed in accordance with the present invention will be readily understood, and although a preferred embodiment of the invention,

is as illustrated and described, it is to be understood that changes in the details of construction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:-

1. A valve of the class described comprising a body, a seat in said body, an annulus threadedly mounted on the body, supports extending from the annulus, a ring on the supports, a sleeve rotatably mounted in said ring, means for actuating said sleeve, a tubular stem threadedly mounted in the sleeve and extending slidably through the annulus, a valve head mounted on the tubular stem and engageable with the seat, said valve head having a fluid passage therein, said valve head including a seat at one end of the passage, the tubular stem having ports therein for cornmunication with the passage, a stem threadedly mounted in the first-named stem, a valve head swivelly mounted on the second-named stem and engageable with the second-named seat for controlling the passage, means for actuating the second-named stem, and means for retaining the first-named stem against rotation.

2. A valve of the class described comprising a body, a seat in said body, an annulus threadedly mounted on the body, supports extending from the annulus, a ring on the supports, a sleeve rotatably mounted in said ring, means for actuating said sleeve, a tubular stem threadedly mounted in the sleeve and extending slidably through the annulus, a valve head mounted on the tubular stem and engageable with the seat, said valve head having a fiuid passage therein, said valve head including a seat at one end of the passage, the tubular stem having ports therein for communication with the passage, a stem threadedly mounted in the first-named stein, a valve head swivelly mounted on the second-named stem and engageable with the second-named seat for controlling the passage. means for actuating the second-named stem, and means for retaining the first-named stem against rotation, the lastna-med means comprising complemental plates fixed on said first-named stem and slidably engaged with the supports.

FERRELL TI-IOLIAS MCNEELAN. JIMMIE L. GARRISON.

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