USRE10398E - Qaqx-cock - Google Patents

Description

Reissued'Oct. 30, 1883.

'l f UNITED STATES.

"PATENT OFFICE.

Louise. FUL'roN, or rITTsBUnG, PENNSYLVANIA.

srnctrxcnnon forming pm o: Remue Leiten recent No. 10,398, dma ottoneso, 1883."

rlglnn] No. 267,416, dated November 14, 1582. Application `fur rrissuc filed September 27. 1883,

To all whom it may concern:

yBeit known that I, Louis B. FULTON, ofA Pittsburg, in the county of Allegheny and Stateoi Pennsylvania, have invented certain new and useful Improvements inlGage'Cocks;

andI do hereby declare that the following is a full,v clear, and exaetdescription of the invention, that will enable' others skilledin the art I to which it appertai'ns to make and use the- 1o same, reference being had'to the accompanyA ing drawings, and to the letters of -reference marked thereon, which form a part of--this' specification, in which-fw v Figure 1 is ra.'longitudinal(section of my imi5 proved gage-cock. Fig. 2is aside view of the valve and stem. Fig. 3 is an end view of the same. Fig. lt is aV si e View of modified pr 'p ller. on` stem, andFigJ, amend view of same-l This inventionhasfor itsobject the conzo4 struction ofaself-grinding gage-cock especially adaptedtolocomotive and other'boilerawhereinthe valve is seated bydirect movement'of a handle, A'and the further object of providingV means for remedyin'g the annoyance of a leak in the valve or seat during a trip of the locomotive or steamboat, or while steam is up -in a stationary boiler. y v, V

The invention consists in constructing the cock. withv two valves, closing, respectively, 3o with and against the pressure, and two corre'- sponding valve-seats; further, in the construction and combination of parts, substantially .as Ahereinafter described and claimed` A is the section which is to be screwedinto the boiler-head. Another section, B, screws into the outer end of A, and both sections are recessed'to formvv the chamber a, at whose inner end I form4 the valve-seat b in section A, and at the outer end the valve-seat c in section 4o Br The Alatter section hase passage, d, outside' the scato, 'which communicates with the exterior through the'transverse 'passage e, passage d being larger than thevalve-stem. Section B has the projecting end f-boredcentrally for the passage of the valve-stem g. Stem g' is rounded at its outer end, and at its inner end is enlarged, and at each end of its enlargement h, I forni the valvesi and k, respectively, as shown. 5o About the center of the enlargement. h, l' construct the rotating collar Z, playing freely* with the Valve-stem in the chamber a and havling the spiral holes or slits m, shown. I bore out the enlargement h at its inner end to form the,A cavity n, which` not only serves to lighten the body, but also to center the stein, `by theaction of the steam ragainst the edge formed by .the conical valve i, the steam 'thus spreading ont in an annular sheet before strikring the collfar '2.

The end f of sectionB ithreaded-to receive the threaded and recessed nipplelP, which is l provided with a handPWheeLQ, or' similiar device for operating. I place a hardmctal plate, 1', 4in the end of recess s, to withstandthe wear of the stem g. Thus constructed, the operationis as fol: lows: Forlocomotiveand other boilers subject" to vibration it isdcsirahle to close the valve. pc sitively. :Eer thisfpnrpose-I-scrcw thehandle Q inwardly until the plate 1- forces-the stem g inwardly far enough to close the inner valve, i, against the seat ,as shown in Fig. 1.v W hen the cock is tube-tried, the handle Q, is unscrewed slightly, and the pressure of'steam forces it open, causingthe end of stem o 4torest. against the'plate r or the end of recess s.' ln. this position, if thepart fr, ofthe stem has the collar l, the steam or Water escaping through the spiral openings will cause the stein and valve to rotate, and this rotation ,continnes till it ischecked by grinding against its seat lin the act of closure. lf,while thelecomotive is running or the steam still generating in a boiler, the valve i becomes; leaky, and trenffiesome thereby1 1 unscrew theA handle Q' till the valve k closes against the seat c, and I am thus ridv ofthe annoying leak till an opportw,` `nity is presented of repairing the valve I thus normally use the valve-z' positively, and in ense of leaks bring the 'valve/k into,action.`

Fonsome boilersl can use the valve lanen mally, 'effecting the closure byste'ampressnr'a and in emergency use the velvet-the reverse of 'that just described. "When the valve i; is 95 seated, the. cock -is triedby screwing in the` handlel Q, thus pressing the valve h oii its seat c and'allowing the steam or Water tdescape at e. In this case, also, vif the collar l be on the part h, the stein g will be set in rapid rotation. 'l have thus always an'extra valve and seat to do duty in case'cf an accident happening to the one in use.l

Ico

Where thewater used is apt to form scale,

V troneo, the @una f um @otk win, unless theV it isi important to be able to immediately stop a leaky gage-cock, as, if the leak be not conlatzer is very frequent-ly tested, become eovered with mud or s'edimeiit,wliieh soon bakes .into an impenetrable mass and renders the cook useless until repaired,

Instead of `screwing the nipple P over the endf, it may be so `tted'as to screw into tne latter. rhis form would take less metal.

It will be observed that, independently of the rotative f unetion, the chamber a and eollar Z necessarily combine to act as guide to the valves i and k,espeeial1y the former, which is farthest from stem g,

I claim as iny invention- 1.- In a gage-eoek having a valve seating against the pressure and capable of rotation,

the combination', with said valve, of a rotative deviee'vloeated at a point forwardof the valve and seat, substantially as described.

2. In'a' gage-oook having a valve seating against the pressure, the eombinatio11,witii said valve and its seat, of an enlarged cylindrical' chamber in front .of said valve and seat and a devieev onthe valve or its stem located in front of said valve and seat and in said chamber, and-adapted to rotate the said valve by the projectile force of escaping steam. or water, substantially as described.l

3. In a gage-cock having a va'iveseating against'the pressure, and means of rotation therefor under the projectile ioree of steam or Water, the combination therewith of guiding 'sections A B, having the respeetive'valveseats b e, chamber af, and outlet d e ,with loose reciprocating or sliding stem g, having the' valves i and k, the former arranged to' elose positively and open by the boiler-pressure,

and the latter arranged to open positively and close by the boiler-pressure, substantially as described.

6. ln a gage-cook, the combination of the rotating'valve-steni g, nipple P, having recess s, and hard-metal plate r, substantially as dey scribed.V

7. In a gage-cock, tile combination, with a A valve seating against the pressure, of a chamH ber in front of said valve larger in diameter than the valveseat, and a guiding device on the valve fitting said chamber and serving to guide the valve to its seat, substantially as described.

In testimony that l claim the foregoing I have hereunto set my haii d.

LOUIS B. FULTON.

Witnessesr TLT. Iii'rfrnnsou, T. lJV. MUTIGHE.

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