US791339A - Valve. - Google Patents

Description

PATENTED MAY 30, .1905.

E. H. GOLD.

VALVE.

APPLIOATION FILED MAY 15, 1901.

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m l w mun VALVE.-

SPECIFICATION forming part of iiettehs Iatent No. 791,339, dated May 36, 1905 l PATENT! EGBERT H. so i), OF on1oA(io,,-iLLIN( )Is. I

c; vl atente'd ma' e iei OFFICE" Application filed ma 'ls, 1901. seriniiaeawe To all whom it minty concern Be it known that I, EGBERT H. GOLD, a citizen of the United States, residing at Chicago, in'the county of Cook and State of Illinois, have invented certain new and useful Improvements in Valves, of which the following is a specification. l v i My invention is adapted for use as an air:

valve, steam-valve, or thelike, but is particuiarly adapted to meetthe requirements andexigencies oh-service which must be met by; a train-pipe valve upon railway-trains, My d valves, and has for its objects, first, to pro- S Vide a simple, strong, and positively-operating valve; second, to provide a valve which when open W111 be thrown to one side of the valve-casing, thereby allowing a freeand unobstructed opening from the-inlet-portthrough the valve-casing and the outlet-port; third,

to providean auxiliary bleeding-valve which may be opened to allow theescepe of water of condensation without unseatingtheiiiain of the lever-the m'ain valve will automatically set itselfjand the bleedingevalve' will auto maticaiiy remain open. These and such other objectses may hereinafter appear are attained by the devices illustrated ing drawings, in WhiGi1 Figure 1 shows verticsltransverse section thigo'n'gh thejvalve-casingflthe valve proper 49 appearing in elevation, Fig. Qis a plan view of my valve, the casing appearing in section.

iine 3 f Fig. 2, and Figs. 4 and 5am like ins-valve.

parts in the several figiire'sof Referring by letter to the accompanying drawings, A is a valve-casing having a steam- "*S 'jnIet port 13 and a. steam-outlet port 0. The

V casing is also provided with a suitable opening,

evice relates especiallyto one-way- 1 pose hereinafter indicated.: The armG a in the accompany-- Fig. 3 is a detail vertical sectional View on-the I I =spce'tive seats. v H sectional views of modi'liedi'ornisof'mybleed siz' able to'bleed the valveto allow'thc escape,

Like letters of reference indicate the same thed rawings.

which is closed by the screw cap 1), through which the interior of the casi gisjacce'ssihle for the. purposeof assembling and repeiir.

E is a valve for closing the outlet'pont. Q. The valve E is provided with a VaIVerSteih F which passes loosely through ti e and is provided with a terminal n utfi-the, .u ndei" side of which furnishes'a shoulder fonengeg 'inp: the upper surface of the arm (jahtsothet the arm G it rises will lift the velvefitem in F and the valve E attached thereto, flh e nut however, is so located V as to, provide lost motion betweenthehrrhfi and theunder side of 'the nut fi-for r- 5' tached to a spindle H, whichis joui'haied jin the casingA at'one side of the, valve Easel Q. is providedwith an extension Lwhich lessee out of the ca'sing throughha stufiing; ox, 7 Upon the outer endof the QXtGEi SiQ II LiS :a mounted ahandle J. 1 9 is a bleeding-valve, whichyas hows the drawings, may consist merely ,o t'siin'ple stem'atthched at its upper elem e ermfi and heving'its conicaljlowerf eh'd sfat bleeding-port g. i As shown in thedrawings, the nn the casmg A isprovide-dwith anan I ever I have shown the {bleeding-poi; open ng through the. stem and nut.v and,

in Fig, 5 I have shown it as an opening thno lf The operation of :rhydevice ises, Normally the'fpressure ,of steam enteringwo' through .he port Bwill'h'old the niain yalvei and the bleeding velvel tightly to l'their r ,Whenever it, is deemed yd of water of condensation, it has, been lcu torlnary heretofore to slightly open' themam vs ve.

The result of this practice, as is well known to railroad men and others accustomed to handling steam under high pressure, is

that the action oflive steam escaping through swin the slightly-opened valve causes a wear and rapid destruction of. the valve, commonly known as \\'ii'cdi'a .v1ng'. \V1th my device I am enabled to entirely avoid this unneces-- ing of the bleeding-valve without unseating the main valve, as is shown in dotted lines in Figs. 4 and 5. I

As a result of numerous service tests I have learned that in operating my improved device for the purpose of bleeding the valve nocare is necessary beyond seeing that the Valve-handle J is given a sutiiciently full This will usually result in unseating the main valve to a greater or less degree. As soon as the handle is released 5 by the operator the steam'pressure will immediate close the main valve with a snap; but the area of the bleeding-port is so small and the consequent pressure upon the bleeding-valve is so slight that such pressure is not suflicient to overcome the friction between the part I and the stufling-box and the spindle H and its journal. The result is that while it is impossible to leave the main valve accidentally open when there is steam in the train pipe the bleeding-valve may be thrown wide-open and will remain in that condition until manually closed. If, however, it is desired to open the mainvalve, the arm J is swung over to, its

' extreme open position, unseating the valve E and at the same time swingingthe valve back and toone side of the casing, thereby carrying it out of the direct line of the current of steam and providing a' tree and unobstructed passage from the inlet-port B through the casingandoutthroughtheoutlet-portU. The advantage of this construction in securing a positive, rapid, and free action is obvious.

A further advantage gained by my construction which enables me to use the handle .1 for opening and closing the valve is that the handle J serves as an infallible pointer or indicator to show whether the valve open or closed. In actual practice it has often happened that with the usual form of trainpipe valve, in which the valve is drawn directly-upward from its seat by the rotation of a wheel upon its spindle, train inspectors have mistz lhenly supposed such valves were open when they were, in tact, closed, with the resulttbat water hasaccumulated in such closed valves, the valves have been frozen,

"and the limiting systems oi entire trains have been hrown outot' omn'ation. With my valve such mistakes cannot happen except through gross negligence, as when the valve is open that position is intallibly indicated by the position of the handle, which will then stand at a pronounced angle to the position occupied by it when the valve is closed.

Obviously various modifications other than those indicated in thedrawings may be made without departing from the spirit of my invention, and such modifications are contemplated hereby.

I do not here claim the specilic form of my valve which is claimed in my Patent No. 709,262, issued upon my oopending application, Serial No. 78.801, tiled October 16, 1901v Having thus described my invention, what I claim, and desire to secure by Letters Pat-- ent, is-

, 1. In a valve, the combination with a casing, of a main valve, a valve-stem rigidly connected therewith, a bleeding-port, a bleedingvalve having a loose connection with said valve-stem so as to be operated by the mainvalve-operating mechanism, and yet be free to open and close without operating the main valve, and means providing frictional engagement between the main-valve-operating mechanism and a portion of the structure, where-' by said bleeding-valve will be automatically held open against steam-pressure, substantially as described.

2. In a valve, the combination with a casing, of a main valve, avalve-operating mechanism having a lost-m0tion connection with said main valve, a bleeding-valve arranged to be operated by the main-valve -'operating mechanism without operating the main valve, and means providing frictional engagement between the valve-operating mechanism and a portion of the structure whereby the bleeding-valve will be automatically held open against steam-pressure, substantially as described.

3. In a valve, the combination with a casing, of a valve seated therein, a valve-operating mechanism having alost-motion connection with said valve, a bleeding-"alve arranged to be operated by said main-valve-opcrating mechanism without operating the main valve, and a spindle constituting part of the valve-operating mechanism and extending! through a stulling-lmx. so that the bleedingvalve will beheld open against steam-pressure by the friction between said spindle and the stalling-box, substantially as described.

4. In a valve, the combination with a casing, of a valve seated therein, an arm journaled at one side of said valve, means for connecting said arm with said valve so as to provide lost motion therebetween, a bleedingvalve attached to said arm and adapted to close a blcOding-pmt, and means extending through a stulling-box lor operating said arm to lirst open said bleeding-valve and then open said main valve, substantially as described.

' bleeding-portP-apd means for operating said 5. In a valve, the combination with a casin of a main valve seatedtherein, an arm jo$= a-led at one side of said main valve, a valve-stem attached tosaid main'valve and loosely engaging said arm, a bleeding-valve attached tdsaid arm and adapted to close a arm to successivelyimseat said bleeding-valve and said main val ve,s'ul3s tan t i ally as described. i 6. In a valve, the eombinatio-mwitl a ca sing, of a main valve seated therein, an ai'ni 1ournaled at one side of said main valve, means so as to bleed1ng-port through said casing at one side f.

l/Vitnesses for connecting" said arm and said main valve provide lost motion thei'ebetween, a

of said main valve,.a bleeding-valve attached to said arm and ing-port, and means for operating said arm to successively unseat said bleeding-valve and said main valve,

adapted to close said bleedsubstantially as described. 2

Oi R. BARNETi', M. E. SHIELDS.

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