USRE8024E - Improvement in stop-cocks - Google Patents

Description

G. C. BAILEY.

Stop-Cocks.

Reissued Jan. 8,1878..

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. mlm! MIJ vm 'i UNITED STATES PATENT OEI'IcE.

GEORGE c. BAILEY, 0E PITTsBURG, PENNSYLVANIA.

IMPROVEMENT IN s'roP-cocKs.

specification forming part of Letters Batent No. 127,547, dated June 4, 1872; Reissue No. 8.024, dated i January B, 1878-; application filed July 11, 1877.

To ali 'whom/fit may concern :v I f Be it known that I, GEORGE C. BAILEY, of Pittsburg, in the county of Allegheny and State' of Pennsylvania, have invented anew and useful Improvementin Stop-Cocks andlI do here- .,by declare the'following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings7 making part of this specification, in whichl Figure 1 is a vertical sectional view of my improved stop-cock. yFig. 2, by a like view,

shows a modified arrangementof the same devices; and Fig. 3 is a cross-section through w w,Fig. 1. A

Like letters of reference indicate like parts in each.

My invention relates to that class of stop-l cocks in which the main valve closes against the pressure, and a water-waste passage is desired for thev purpose of emptying the .discharge-pipe. In most or all suchstop-cocks, as heretofore made, the main supply and water-waste-have been opened and closed by separate and independently-acting devices; or, where a single -device was employed for both purposes, the water supply was commonly opened before the water-waste passage was closed, with a consequent unnecessary waste of water.

By my improvement Lcombine a spring with the valve-stem and valves, in such away that its action shall prevent the opening of eitherY the water-supply or the water-waste until'the other is closed. y f. l-

To enable others skilled in the art to makev and use my invention, I willproceed to describeits construction and mode of operation.

In the drawings, A represents the supplypipe, and B the discharge. A diaphragm,-B, separates the two, and in this is .awatensupply opening, around which is the valve-'seat b. B,

is the valve-case ,'closed atits upper end'by the screw-cap D and throughthis plays the valve-stem E, which is operated by aT,E,'or equivalent device. This stem' is threaded at its lower end, and 'carries a valve, ,M, on the upper lopen end ofwhich is a tapped socket ,for the threaded stem E to work in. This valve has .a suitable packing, n, on 4its lower face, and has only a vertical motion, being prevented from rotating by the ribs n', which play in grooves vin the side of the valve-case, as shown in Fig. 3. I am now describing more V particularly the devices shown in Fig. 1. J ust inside the upper end of the valve-case B, and /on a shoulder therein, I place an annular metallic washer, a. Resting on this, and projecting out so as to cover the end .of the valve-case B", is a packing-ring, s, the two being pressed Well down, and held tightly in place by the screw-cap D. The opening through the Washer a and packing-ring s is a little larger than the stem E, as atri, so as to provide room for the waste water to passup through and out at the Water-escape opening g. On ,the stem EV is a Bange, c, of such diameter that when down it ,will close the annular opening i, but whenvup will leave that opening and the water-waste openin g unobstructed. But the forni of the openingi is unimportant.

A spiral spring, c, is arranged with one end bearing on a shoulder, m, of the valve M, and the other end against the lower face of the washer a, though it may bear against any other fixed device appertaining to the, valve- "case, `These devices being in the position' shown vin Fig. 1,`it will be obvious that on the stem'E being turned down4 the, spring c will hold the valve M to its seat until the flange e rests on the packing-ring s. This will close the annular opening i, and cut o' communication with the water-Waste lpassage g. Then,

as the turning of the stem is continued the =valve M will be raised `trom its seat, and the 'water-supply be opened. When the stemis turned the other way, the action of the spring con the valve M will cause' the latter to be seated, so cutting. off the water-supply; and

then the flange efwill rise from lits k'seat and open communication with the water-waste;l j and in this operation the flange e performs the function of la valve.

In rig. 2 I have shownsbstanuauy the,

vsame devices with a like operation, but in an arrangement somewhatjmodied. Thel same Y letters of reference indicate the same parte as .inrFig 1. The washer aand-flange e of Fig.- 1 are, in this arrangement, combined together in the flange e. The upper end ofthe valve M A is of stemform, asiat `m', and'this stem screws4 into and' out of the-tapped 'socket e'. A This -angefe is large enough to cover the entireI Iopening of the valve-case, and the spring c is arranged above the ilange, with one end bearing thereon, and the other bearing against the cap, or other fixed part of the valve-case B", with or without an interposed bearing-ring, d.

With the devices in the position shown in Fig. 2 the water-supply iis open, and the ilange c, being pressed down on the packing-ring s, closes communication with the waste-passage g. If, now, the valve M be screwed down to its seat, the liange e will retain its place till the valve strikes its seat, and then, the turning of the stem being continued, the spring o will be compressed, and the ilange crise from its seat, thus opening communication from the discharge-pipe to the waste-passage. In closing the-water-waste and opening the valve the operation is directly the reverse, the iiange first closing down on its seat, and then the valve being opened.

It will be observed that the operation in Figs. 1 and 2 is the same;4 that in both the water-supply and water-waste are each opened and closed immediately on the closing or opening of the other; that in no case cam both be open at the same time; vthat both are operated by a single device; and that the device by which the same operation is secured in both -is tl'e spring o, with one end bearing on a iixed seat, and the other end bearing on either the valve which closes the water-supply or on the ange which closes the waste, with or without an interposed ring, d.

I claim herein as my inventionl. In a stop-cock, the main valve of which closes against the pressure, the combination of rotating valve-stem and vertical spring, with the supply and waste ports, and valves governing the same, substantially as set forth, whereby the elastic force of the spring shall be operative in holding one valve to its seat, while the stem is being rotated to shift the other valve. l

2. A vertical spring, combined in a stopcock valve-case, with a threaded rotating stem, a main valve closing against the pressure, and a waste-port valve, and arranged to press the waste-port valve against its port, and thereby close the waste, while the through water-way port is open, substantially as set forth.

3. The combination of a ilange, e, packingring s, spring c, and waste-passage g, arranged substantially as and for the purposes set forth.

4. In a stop-cock, the combination of the l flanged stem E, packing-ring s, waste-passage g, and springl c, with valve M, and seat b, arranged substantially as and for the pur-` poses set forth.

Inv testimony whereof I have hereunto set my hand.

GEORGE o. BAILEY.

Witnesses:

J. J. McCoRMIcK, GLAUDIUs L. PARKER.

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