US976908A - Valve. - Google Patents

Description

T. F. PAYNE.

vALvn.

APPLIOATIOI FILED 00T. 3, 1907.

Patented' Nov. 29, 1910.

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T0 it concern:

UNITED 'STATES 'PATENT OFFICE.

THOMS F.,PAYNE, PITTSBUBG, PENSYLVANIA.

vBe it known that A1, .THOMAS F. PAYNE, of Pittsburg, inv the county of Allegheny and State ofPennsylvania, have invented a certain'ne'w and useful Improvement in Valves, of which the following is a full, clear, and 4exact description, reference being had to the accompanying drawing, forming part of this speeication, in which- Figure 1 is a vertical sectional view illustrating Iny invention and showing the valve in its closed position; Fig. 2 is a horizontal sectional view on the'line 2--2 yof Fi 1; and Fig. 3v is a vertical sectional View s `owing the valve in its open position.

Like symbols of reference indicate like parts wherever they occur.

Heretofore in most self-closin valves for water-mains, washstands, &c., t e pressure of the Water in closing the valve has acted so rapidly as to cause an unpleasant and injurious jar and thumping when the valve strikes its seat.

The object of my invention is to provide a cushion which shall serve to deaden the force of the return ofthe valveat the end of its stroke and alsoto provide a self-closing valve of simpler and more durable construction than has heretofore been in use and which can be easily taken apart for repairing and cleaning.

1n the drawing 2\represents the hollow casing having a spout 3, a flange seat 41,

adapted to rest against the wall or shelfl of thestand, and a threaded coupling extension 5, all of which parts may be formed in one piece. Inside of the casing 2 is the annular shoulder 6 which serves as a support for the valve seat and barrel. This valve seat and barrel are composed of a casting 7 which is adapted to be dropped into the interior of the casing 2, to rest on the shoulder 6, and to be held firmly in position by the screw cap 8 of the casing 2. At the lower enl of the barrel 7 is the valve-seat 9 having a `ace against which the valve 10 is adapted to seat. In the barrel 7 above the valve-seat 9 is a double cylindrical chamber, the lower portion 11 of which has a greater diameter than the upper portion 11B. The valve 10 ma be formed of rubberlor other like materlal adapted to seat itself against the valve-seat 9. On the valvelstem 13, above the valve 10, is a double cylindrical plug having its lower portion 12 of such diameter as to fit within 'the cylindrical cavity 11, and

VALVE.

Specification of Letters Patent. Patented 29, 19,10. ,l Application ledoctober 3, 1907. Serial No. 395,676.

the upperportion 12a of such diameter as to it in the cylindrical cavity 11a. Above the cavity 11a is a partition 14 having a central opening for the passage 0f the valve stem 13. Secured tothe upper portion of the valve-stem-13 is a nut 15, and between this nut and the partition 14 is the rcoiled sprin 16, `the force of which is exerted up- Ward y. Opening from the cavity 11a, opposite the spout 3, is a passage 17 to permit of the free flow of Water from ,the cavity. Bearing on the top of the valve-stem 13 is a V-shaped depressin cam 18 of the ordinary construction an having a handle 20. The barrel 7 is prevented from rotating in the casing 2 by the feather and spline 19. Opening from the upper or outer cavity 21v in whic the spring 16 is located, is a small waste passage 22 WhicheXtends to a point 'opposite the upper portion of the'mouth of t The operation is as follows: When it is desired to open the valve to permit of the iiow of Water therethrough, the handle 2O is given a half turn which depresses the valvestem 13, the valve 10 and the plugs 12 and 12IL to the position-shown in Fig. 3, the valvev 10 being removed from its valve-seat and the plugs I12 and 12 being lowered below the 111g a free channel for the How of water from the water-pipe 5 to the spout 3. When the handle is released, the hydraulic force of the water unseats the depressing cam 18 and carries the valve stem 13 upwardly. lefore,-however, the valve 10 can strike againstthc valve-seat 9, the plugs 12 and 12 enter the cavities 11 and 11, thus imprisoni'ng water in the cavity 11 which serves as a cushion and pre-vents the valve from striking violently under the pressure of water againstthe valve-scat. The water thus im'- prisoned gradually leaks past the plug 12% and permits the valve 10 to seat itself against the valve-scat 9. The purpose of the waste passage 22 is to permit the flow of water through the spout 3 to draw any wat-er out of the cavity 21 that may have leaked therein by suction. As the upper portion of the barrel' 7 fits tightly against the sleeve of the cap S, no packing is necessary betwecnthe cap and the casing 2. As the valve-seat 9 is formed in the barrel 7, instead of in the casing 2, the valve may belifted out of the casing with thebarrel 7 when the cap 8 has been unscrewed from the casing.I

cavities 11 and 11u respectively, thus forni The advantages of my invention which result from the devices Which imprison the AWater and form a cushion, from the coninteriorannular flange, a removable barrel supported upon said flange and having a lower chamber constituting a fluid channel having passages ofdiferent dlanieters and be appreciprovided at its lower end with a valve-seat, and an upper chamber constituting a housing for a valve spring, a valve and double plug arranged to enter said passages and form an intermediate closed annular pocket when the valve approaches the valve-seat, an intermediate wall separating said chambers and forming a seat 25 for sald valve sprlng, and a port conuectlng said upper chamber with the valve outlet.

In testimony whereof, I have hereunto set my hand.

y THOMAS F. PAYNE.

Witnesses JAMES K. BAKEWELL. C. E. EGGERS.

a valve stem having 2o

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