US1747442A - Drain valve - Google Patents

Description

DRAIN VALVE Filed April '7. 1927 l BYv " l ATTORNEYS,

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Patented Feb. v1e, 1930 PATENT ermee g JOSEPH L; HUTCHIN'GS, F CLEAN', ,NEW 'YORK DRAIN VALVE Application 'filed April 7,

This invention relates to drain valves, and it has for its object more particularly the provision of an improved safety Ydrain valve.

vIn my -co-pending application (Serial No.

i5 81,595, led January 15, 1926), of which this application is a continuation in part, l have disclosed a drain valve of the safety'type in which are employed actuating means divided into two cooperating stems. @ne stem tits l0 into the vinner stationary member (which is to be attached lto the'inside of a container) and the other Astem fits into lthe outer stationary member (which is -to be attached to the outside ofthe container). The adjacent 'ends of'these two stems are adapted to push against one another as the `valve (inside the container) is opened or closed. Since a set of springs is operatively associated with the inner stem to keep the valve closed in its normal position, the outer stationary member and its outer stem may be broken away 'from the container and the contents of the container will still be safelyjintact.

If the containers contents, such as a liquid or gas, contains granular'substances, these are sometimes liable to settle in the ground seats of the valve. This means that the ground seats cannot easily fbe non-lealably drawn together, un-l'esssucfh granular sub- O stances can be removed. l the parts of the valve attached to the `outside of thevcontainer are broken oli", and 4granular substances have 'settled in the ground seats, the valve `may 'continue -to leak and yit:isdillic'ult'to stop the same. Y y

In `accordance with the presentinvention, 'a continuous stem is employed throughout they inner 'and outer stationar member parts. It granular substances should settle in `the ground seats, or 'if the ground seats should not go together non-lealrafbly tor some `other reason, the part of the stem'ou-tside of the 'container may be grasped yand pulled and a turned (giving a grinding effect on the J vground seats) in suchmanner as :to jremove or grind ydown the objectionable granular substance. This continuous actuating means 'may consist of vone whole' member, or it may comprise two 'or more rseparate stems which are operatively connected to one another 'as 1927. serial no. 181,691.

by links. The stem or :stems may be slotted to receive,and give lay for, the links.

These and other eatures of myinvention will be `better understood by reference to the accompanying drawings, taken in conjunc- 255 tion with the following description, in which Y Fig. 1 is axsectional elevati-on inY part 4oli' .a drain valve with linked stems) :attached to a container,'showing the valve in the fclosed position;

Fig. 2 is an enlargexily sectional plan of the valve shown in Fig. 1, showing the valve in the open. position; .and

Fig. '3 is -a sectional elevation in vpart of a modified drain valve (with .a single stem) attached toa container, showing the-vallve in thetclosed position. 'The liquid or gaseous container 10 has fa suitable hole 11 through'the walls thereof at a point from which it is desired to with-.draw i the contents. Pipe llanfges 12 and 13 are securely'and non-leakably attached tothe tank about the hole.

That part of the valve 'which 'lits on theiinside of `the `container comprises ya stationary member 14, having an axial passage therethrough, which ,screws into the inside flange 12. This inner stationary member part contains 'the hole or 'holes 15 placed .between .the ground seat 16 and the remote end iofthe member.

A cap17 lits `slidably about, fand over, the end ofthe inner stationary member 151C. This .cap is provided with a gnound seat 18,'whjch is adapted to fit non-leakably on the vground i 5 seat 1=6when the valve 1is the closed position. l f r A continuous actuating means 19 ,(see Fig. 3), which may lbe made up of a whole rod, or two or more .stem parts which are connected (.see Figs. 1 and 2.), tits within the inner stationary member 14 and is .securely Kattached to the, movable 'cap 17. The inner member .14 has a disc `guide 20 appropriately spaced therein. This disc has a 'hole or lholes '35 '21 through which the contents of the container may be conducted, and a suitable hole through which `the stem 19 'may be freely moved during the opening and closing operay 'ft-ionsr of the valve. 'The stem '19 ihas a shoul- '100 f Thls screen may be conveniently attached to der Y272 located at or near the wallrof the con- `ltainer. l This shoulder acts as a wall against Y which springs 23'are confined, the springs bef fing atall times held-between thedisc20 and v the shoulder 22,. This spring isadaptedto.

keep the valve closed in its normal position.

' In the case'of a; continuous actuating means I comprising two orinoreoperatively connect- Ved stems y(ligsfl and 2) ,a link 24 is properly attached to the shoulder` 22 and V'extends through stem 19. -It is preferred" that the stem 19.- contain 'a slot 25., through, andfin,

which the link 24 may befreely moved.

That part of thevalvewhich lits on the outy side'of the container *comprises a stationary 'member-26, having an axial passage ,there- A11T29 netted t the'othefiend of the sta.;

f tionaryy member 26. A nippleB() fits into this T andpisadaptedto convey away the contents @39 into the extreme end'of the T. llA bushing/1132 in turn its into the bushingslee've.` TheY othe containeni Azbushing-sleeve 31.11its bushing-cap 38` fits over the packing material 34 and the'` end of the bushing 32. Y

A; lever .is pivotally connectedto ythe extremeonter'end of the stem 19:(0'119) by means of the fitting 36.* VThis 'lever isin'turn attached to the inlcrumV member 37 yatthe point 38.: 'The fulcrnm'memb'er is in turn at- 'tached'k to the bushing-sleeve .31. A, spring lsurroundsthe extreme end of the stem19 or 19') and is interposed between the bushing-` Y cap33 and the fitting 36. It may be well to .Y point out that-it would,fo course, be possible to operate this'valve with onlyzonesetrof springs. That is to say, either springs 23V or 39could be dispensedfwithmnd goodresults arepossible.; However, vin Imy present' pre-V g ferredpractlce,,Imake use otboth setsfof d 'i -f1 In orderthat the movable and'slidable cap springs.

17 be completely removed'l iromthel inner'stationary. member14, a guard 40 may Y fbeattached to the stationary member by 'means of the-nuts 41.vr The llength of the Y hguardissn ch thatthe cap 17 may not be comip l'etely pnshed'away from the vend of theinner stationary'member. l I f desired, aufscreen 42 may be'placed aboutthe innerfvalve parts'.

vthecontainer 10. .,ltwfill, ofcourse, be-evi7 dentthat the guard may be dispensed with,

ifeitherfor both of theV springs 23 and V39am i of' such Alength and/or strength` that fit, will Y ed during the' Opening' and-Closing operations ofthervalvre.v c Y* The valves are'closed in their normal posi'-A movement takesplace the stem 19 or 19 and 197 is moved 'withinthe outer and inner sta- Lextent-that the movable and slidablef cap 17 is'moved partly awayV from the remoteY end Y 'l' i vkofthe inner member ,14. During this operation the springsV 39 and 23 are compressed.

In thecase of the actuating means illustrated in Figs.V 1fand'2, employing V-a link', the louter `stem 19 is pushed up against the inner stem` 19,so`fthatvone`can move theother. {Asthe k85 cap 17 uncovers theV holeor holes 15, the contents .of the container 10 rush intothe axial passageway of the innerand outerstationary members and! arev f ultimately withdrawn l Ythrough the nipple 30. I f f "i: l/Vhen itis desired Y `torce applied to th'elever 35 zisremoved.` Since the sprin`gs23 `and 39 areunder com-A pression, as soon as the pressure onfthem is to, cio'sethe valve, the

relieved, the stems 19 (or 19and` 19'?) are forced outwardly,ran'd the cap is againVv brought back in itsnormal position over the inner stationaryv member 14. When in this positongthe ground seatsrl and 18 tightly and noneleakably; enga-ge onejanother.

-Sjhould any granularv lsubstance settle. in v the7 ground, seats YadtertheY valveV closing operation',r lthe lever. may be pulledand turned in sufchlymanner as to yremovefjor .be impossible to push thecap 17 beyond .the

end of the inner stationary member. Y 'Y l The operation of the above describlendvalves '1L yisgas follows:

. c i j tionary member parts 26 and141 to such an Y sie lgri-nd :downthefobjectionable(foreign iparticles,,.-thns making,- `it possible Vvfor' the ground seats to engage each other non-leal;-`

Ifrforrany reason'the valveparts ontsidejof thel container should be injnred,aswhenf a heavy falling obj ect. strikes the same- Aand bends them outof alignment withlthe valve l', f parts on the inside of the cntainer,the .action Vot the springs in'cooperation withthe stem I Stems ,would {stil-l keepqthe valvev from f Q y leaking. .Y i

1f.'Aniimprovedvalvleiwhiehf'comprises, al

stationary vmen'iber divided finto. ftwo' mam partshavhg anfaxial Passagetherethrough, i one partoffwhich isgadaptedto vbe attached tothe inside of a' container, said ypart having a ground* seat onthejoutside thereof,-the`- otherpart of which isV adapted tobeattached to-theoutsideofthe containerjand in'` axial alignment'w'ith,thel-rst part', a holein said innerstationary y member partgleadingV tothe tionary member which.V is, attached to the inside ofthe container, saidgroundseats peingl axial passage, aygronnd vseatedjslidablecap. n f member ittingrfover'vthatipart Vof thesta-f '10 'i tion. When itis desired'to drainY the con; tents of the container 1z0, the lever 351s pulled or. Apushed toward"y th'econtainer.: As this adapted to engage each other non-leakably, and continuous actuating means within said main stationary members attached to said slidable member adapted to cause the engagement and disengagement of the ground seats, so that the contents, within the container may be caused to pass through said hole when desired.

2. An improved valve which comprises, a stationary member divided into two main parts having an axial passage therethrough one part of which is adapted to be attached to the inside of a container. said part having a ground seat on the outside thereof, the other part of which is adapted to be attached to the outside of the container and in axial alignment with the iirst part, a hole in said inner stationary member part leading to the axial passage, a ground seated slidable cap member fitting over that part of the stationarv member which is attached to the inside of the container, said ground seats being adapted to engage each other non-leakablv, and linked actuating means within said main stationary members attached to said slidable member adapted to cause the engagement and disengagement of the ground seats, so that the contents within the container may be caused to pass through said hole when desired.

3. An improved valve comprising a stationary member divided into two main parts having an axial passage therethrough, one part of which is ground seated and adapted to he attached to the inside of a container, said part having associated therewith a ground seated, slidable member adapted to conduct the contents of the container to the axial passage thereof.y the other part of which is adapted to be attached to the outside of the container, in axial alignment with the first part aud actuating means within said stationary member parts attached to said slidable member adapted to cause Vthe engagement and dis-engagement of the ground seats.

In testimony whereof I a'lix my signature.

JOSEPH L. HUTCHINGS.

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