US2431527A - Telescopic valve operating extension - Google Patents

Description

Nov. 25, 1947. T. WALTERS I 2,431,527

TELESCOPIC VALVE OPERATING EXTENSION Filed Oct. 11, 1945 I 75277 Wd/fifi" I N VEN TOR.

ATTORNEYS Patented Nov. 25, 1947 TELESCOPIC VALVE OPERATING EXTENSION Tom Walters, Tampa, Fla. Application October 11, 1943, Serial No. 505,826

1 Claim.

Figure 4 is a face view of a hand wheel for turning the valve,

In the embodiment of the invention selected for illustration, I make use of a valve Ill provided with the usual rotary valve stem [2. This valve is located some distance underneath the subfioor l4. Heretofore, it has been a common practice to provide the subfloors with manholes and the like to lend accessibility to the valve. Such openings require covers. In any event, the valves are diificult to reach.

An opening I6 is provided in the subfioor M for the reception of an annular flange I8 on a closure late 29. This plate is provided with a flange 22 engaging the bottom face of the subfioor I4 and is secured thereto by bolts 24 having their heads 26 countersunk so as to lie flush with the subfioor 14. A drain hole 28 is provided in the plate 20.

To the valve stem I2 is connected a yoke 39 having a square opening 32 to receive the square end 34 of the valve stem l2. A nut 36 is threaded on the stem l2 to fixedly secure the latter to the yoke 36.

The yoke 30 is formed integrally with a tube 38 having an end wall 40 provided with a rectangularly shaped opening 42 through which is slidably extended a correspondingly shaped bar 44 attached to the lower end of an extension stem 46 rotatably guided in an opening 48 in the plate 20.

To the lower end of the bar 44 is attached a circular body 58 slidable freely inside the tube 38 and fixedly secured to the bar 44 by a screw pin 52. To the upper end of the valve extension 46 is attached a hand wheel 54 normally housed in the flange l8 to lie flush with the subfloor l4. Two flanges 56 extend across the hand wheel 64 to facilitate insertion of the fingers underneath the flanges to lift the hand wheel clear of the flange I8. A tension spring 58 has one end attached to the valve extension 46 and its other end attached to the tube 38 to yieldingly hold the hand wheel against the plate 20.

In operation, the tube 38 is of sufiicient length to drop the body 50 a distance necessary to bring the hand wheel 64 inside the flange l8 regardless of the position of the valve stem l2. Since the bar 44 is rectangular in cross section, rotation of the hand wheel 54 imparts rotary motion to the tube 38, which in turn imparts rotation to the valve stem l2. Lines 60 and 62 are placed on the extension stem 46 to respectively indicate the closed and opened positions of the valve l0 when the body 56 lies in engagement with the end 40. The spring 58 acts to return the hand wheel 54 and the valve extension 46 to their normal positions in installations where thevalve stem mechanism may be arranged horizontally or upside down in contradistinction to the vertical position illustrated in the drawings. Openings 66' are provided in the tube 38 to drain liquid which may collect therein.

Without further elaboration, the foregoing will so fully explain my invention, that others may, by applying current knowledge, readily adapt the same for use under various conditions of service.

What I claim is:

The combination of a valve having a rotary valve stem formed with a squared end, a hollow tubular member with open sides and a head and a yoke fixed on the end opposite said head on the squared end of said valve stem and having a rectangular opening in the head, a bar like element slidably received in the opening and having a body at its end slidably received in the tubular body, a barrier above and spaced from the tubular body and formed with a countersunk portion above the valve and an opening in vertical alignment with the bar, an extension on the bar passing upwardly through the opening, a hand wheel on the extension seatable in the countersunk portion of the barrier, and a spring having its respective ends connected with the extension and the tubular member to normally hold the handwheel in the countersunk portion.

TOM WALTERS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,491,077 Beerworth Apr. 22, 1924 1,287,320 Howell Dec. 10, 1918 1,348,993 I-Iawn Aug. 10, 1920 2,177,672 Schooch Oct. 31, 1939 2,104,838 Leonard Jan. 11, 1938 FOREIGN PATENTS Number Country Date 453,333 Great Britain Sept. 9, 1936

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