US700434A - Reducing-valve. - Google Patents

Description

Patented may 20, |902.

v G. w. Lofm.l

REDUCHIG VALVE.

(Applicat'iop led Aug. 10, 1901.)

(No Model.)

I Wfl/,Willi /3 J7.

3o v its operating properly'at the given pressure',

`and in general Ato provide? simple and im- UNITED STATES PATENT OFFICE,`

GEORGE YV. LORD, OF CHICAGO, ILLlNOIS.

REDUQiNG-VALVE.

SPECIFICATION forming part of Lamas,l Patent No. 700,434, dated May 2 0, 1902.

Application filed ugust 10.1901'. ASerial No.. 71,561. (No model.)v l

. To all whom, it may concern: 'Be it known that I, GEORGE W. LORD, of-

, Chicago, in the county of Cook and State of Illinois, have invented certain -newand useful Improvements in Reducing-Valves, of which the following is a specification.

v This invention relates to improvements in reducing-valveaand refers .more especially to improvements in means whereby the closing of the valve under high pressure is rendered more certain andpositive, the *inven-` v tionbeing embodied in thepresent instance- .its

in the form of va combined reducing-valve and .faucet i f U y Among the salient objects of the invention force the valve-closureLpositively' and. accu;l

rately against its seat' under lhigh pressure, to provide in a deviceofthis character a sim- :pleand improved construotiongwhereby the.l i toggle mechanism is connected with the pres-4 2 5 n n or counterbalanced byafsimple spring, there,-V

sure-diaphragm, vto, provide an improved cou-- struction' and arrangement @whereby the weighty of the operative mechanism is carried,

by enabling the valveto` be set at any required pressure `with accuracy andwithcertainty of,

proved details of construction contributing to the economy of manufacture and durability and efficiency of thev device. v l To the above ends the invention consists in the matters hereinafter described, and more particularly pointed out in the appended claims, and the same will be readily understood from the following description, referf ence being had to the accompanying drawf i ings, in whichf Figure 1 is an axial sectional `View taken in the plane of the stemof the valve.

auism in plan, the top casing member being removed and the stem of 'the pressure-diaphragm being shown incross-section at a point v below the diaphragm. Fig. 3 is a fragmentary sectional view taken online 3 13 of `Fig.f1 and.

ia whole the lower or main body of the casing 'of the valve, and 2 the top member thereof, j vthe latter beingmade inthe form of a cap inflower part1 of lthefcasingyvyithin "whichVIV are 'The pressure-diaphragm?may be `fof-dany "usual or preferred*construction, being-inthe l Fig. 2 is e a view of the lower partsofthe' valve mech# lingthe double purpose of indicatingthe, po.-

jsaidvFig. 1.

Referring to said drawings, l designates as v ternallythreaded,i as indicated at;3 ,"a`nd t v Y T ting upon the correspondingly-threaded-up- 6o is cylindric at itslupper end, but mergesfroin acylindric shape intoaiiat-sided form mid'- and alsoin dotted lines at.55 Fig', 2, theob-f2 ject ofthis construction being tov provide-m65.' 1:;

6 inthe upperportion of the casi-ngfalvldj ay Y mounted thefsliding vvalve S and thegmecha' ismforoperating same. i

present instance secured 'atv itsperiphery'be-v ,l tween theend margin. 9 of 'thejvalve-casingf' q andthe meeting internal shoulder' lO' of :the

cap-member 2' isconneetedk the usual barrel v1 or jtubular housing`,11,.within whichy Iis 'are y, v rangedacoiled expansion-spring 12, bearing 8o Y 1` at itslower end uponthe upper end of asti-:5m` ,g ,f t. 13, connected with` thepressure-.diaphragm ,t and reciprocating.throughasuitableguide14a, formed-inthe lower end of vsaid barrel, the? upperjend of said'spring" beingeng'aged by a"n85` n adjustable bearing-blockl, which hasscrew` threadedengagementwithanadjusting-screwU l 16, threaded therethroughaud rigidly icon uected at its upper end with a thumb-nut 17, 'i rotatably journaled uponthe Aupper;end* of 9o' the barrel `11. One sideof the barrel 11 is provided with alongitudinal slot 18, through Y which protrudes a pointer 19,' (see detail Fig. v

4,) rigidvwith theblock 15, said pointerservf` exerted upon the stem 13, connected with the diaphragm by the spring 12, is indicated in any suitable units.

Referring now more particularly to the construction of the valve mechanism which controls the flow through the valve, 21 designates the inlet-port leading into the valve-casing from the high-pressure side, 21' an outletport through the opposite side of the casing,`

and 22 avalve-seat block mounted against the inside wall of the casing, through which said port 21 opens and itself provided with a port or passage 23, arranged to register with the port 21. The valve-seat block may be secured in position in any suitable manner, being in the present instance secured by means of a pair of through bolts or screws 24, inserted through the opposite side walls of the casing andthrough said block, as indicated best in Fig. 2, a suitable packing of slightly-compressible and fluid-proof material being interposed between the block and the casing, as indicated at 25, to insure an accurate and Huid-proof joint.

Within the inner face of the valve-seat block is formed a way 2G, arranged to extend upwardly parallel with the direction of movement of the stem 13, connected with the pressure-diaphragm, said Way being desirably as herein shown of undercut form in cross-section, as indicated clearly at 27 in Fig. 2. Vithin the way 26 is mounted to slide a slidevalve S, which desirably has the form of a plate iitting at its edges the undercut portions 27 of the way and at its outer face fitting accurately against the valve-seat formed around the port-opening 23. Upon its inner side said valve member is provided with a transversely-extending rib or block 29, which is engaged by the notched lower end 3l of an extension 13' of the stem 13, connected with the pressure-diaphragm. As shown clearly in Fig. 1 the extension 13' is deiiected from its point of connection with the central portion of the diaphragm radially outward and is rounded at its end adjacent to the notch thereof, so as to bear firmly against the inner side of the slide-valve when the latter is in its fully-closed position. In order to force and hold said extension in firm bearing with the slide-Valve when the latter is shifted into a fully-closed position, a toggle member 33 is provided, which is arranged to extend substantially at right angles to the direction of movement of the slide-valve, one end of said toggle member being pivotally connected with the valve-casing by means of a throughpivot 3i, while its opposite end is likewise pivotally connected with the extension 13' by means of a transverse pivot-pin 35, extending through said parts. As a preferred construction the toggle member 33 is bifurcated or provided with arms at each of its ends,- one pair of arms being arranged to engage the pivot 34 at points relatively distant apart, while the opposite pair of arms is arranged to embrace the opposite sides of the extension 13', thereby insuring an accurate movement of the parts in a Vertical plane. The pivot 35, whereby the toggle member and extension are exibly united, extends through a slot 3G iu one of said members, arranged to extend longitudinally of the toggle member, so as to afford the necessary movement of the pivot relatively to the toggle incident to the movement of that endof the toggle member in an arc concentric with the pivot 34 during the movements of the valve. In order, however, that the extension member 13' may be forced positively against the inner side of the slidevalve as the latter approaches its fully-closed position, which in the present inst-ance is its uppermost position, the inner end of the slot '3G or that remote from the slide-valve is so located as to engage thepivot 35, which is rigid in the extension 13', and thereby force and hold the latter in positive bearing engagement with the valve.

In order to counterbalauce the weight of the v toggle member, the slide-valve, and the stem and extension 13 and 13', a counterbalancespring 37 is provided, consisting in the present instance of a wire spring bent in the form ofva rectangular loop, the central portion 3S of which underlies the toggle member at a point intermediate the length ofthe latter, while the downturned end portions 39 bear against the inner face of the rear side of the valve-casing, and the intermediate angle portions 110 rest upon the pivot 3l. This spring is so formed that its tension will just counterbalance the weight of the parts mentioned, thereby leaving the tension of the pressureregulating spring 2 unaffected by the Weight of the operating parts. In order to facilitate the removal ot' the top cap member 2 of the valve-casing, it is provided upon its central extension 2", with which the barrel l1 is cou-- nected, with a plurality ot facets 2", adapted for the engagement of a Spanner.

The reducing-valve is herein'shown as combined with a faucet, (designated as a whole 41,) such a combined faucet and reducingvalve being especially well adapted for use in drawing beer or other beverages, which are ordinarily drawn under considerable pressure and, desirably, with varying pressure to suit the fancy or requirements of different persons or conditions. The faucet-body 4l may be of any suitable or preferred construction, that shown herein being of usual form and provided with the usual turn-cock 12. The high-pressure side of the valve is connected with a stem or pipe 43, which may be connected with any receptacle or other source of Supply- The operation of the device is probably entirely obvious from the foregoing description, but may be briefly set forth as follows: Assuming that the inlet side of the reducingvalve be connected with any suitable source of liquid under pressure-as, for example, through the pipe t--upon turning the cock 41 so as to permit the liquid to ilow through,

IOO

lIO

the position of the controlling-valve 8 will be determined! by the back pressure or resistance to the escape of the liquid through the ontlet-passage 21C If the cock be only partly opened, the greater resistance'to the escape of the liquid Will create a greater internal pressure in the valvelchamber, and this, acting upon the diaphragm 6, will raise the slidevalve correspondingly, and thus restrict the inlet-passage, while, on the other` hand, if the escape from the valve-chamber be relatively free-as, for example, when the cock be en-1 tirely open-the internal pressure will be less and the diaphragm correspondingly forcedY downwardly by the spring l2 and the slidevalve thus opened to a greater extent, so that in either case the liquid vwill issue from the faucet under substantially the same pressure.

y This pressure may be readily regulated within the limits of control alforded by thespring l2 by simply manipulating the thumb-nut 17 so as to increase or decrease the pressure of the spring exerted uponthe diaphragm 6.

Itis to be particnlarlynotedthat it follows from* the construction described that the movementof the slidevalve is entirely free and as nearly aspossible devoid of friction during thevordinary working of the'valvc,v` thereby rendering the regulation of pressure certain and uniform, while at thesame time whenever the internal or back pressureexceeds thatpressure at which the valve is set `to close thevalve will'be forcedtpositively;

against its seatand held there by the wedging action of the toggle mechanism described. The result is that any looseness of fit between the slide-valve and the ways, either such as is provided to insure sufficient freedom of movement between the parts or suchlasfol-` lows from wear, will notadect the complete,r

accurate, and positive closing of the valve under excessive pressure. The several parts ofy the construction are, all, smpleand capable of being cheaply made, While at the same time they. are extremely durable and not apt toI readily getout of repair oradj ustment. -v More-4 over, the construction is such that the Work-y ing partsof the valve may be withdrawn from v the casing with theutmostfacility either for the` purpose of cleaning, repair, or renewal.

While I have herein described a preferred'l embodiment of my invention, yet it will bev understood that the details thereof may be modified to a certainextent without departing from the invention, andI do not, there-. fore, wish to limit myself to these exact `de, tails, except to the extent that they are made` subject of specific claims.

I claim as my inventione Y 1. In a reducingfvalve the combination with the valve-casing'and pressure-diaphragm arranged therein, of aslide-valve arranged to control the admission" of liquidgtothe valvecasing, an Ioperating member operatively connecting said slide-Valve with the pressure` diaphragm and a toggle mechanism arranged.v

to force the valve positively against its seat as'it approaches itsiclosed position. y

2. In a reducing-valve the combination with the valve-casing and pressure-diaphragm arranged therein, of a slide-valve arranged to control the admission of liquidto the valvecasing, an operating member directly connecting 'the pressurediaphragm with said slide-valve so that said parts move together positively, and an oscillatory member pivotf ally mounted within the valve-'casing and operatively connected with said slide-valve to move with the latter; the location of the pivotal axis of said oscillatory member and its operative connections with the slide-valve being arranged to force the slideevalve positively toward its seat as it approaches itsA closed position in its movement with the pressure-diaphragm.

3. In al reducin g-valve,the combination with the valve-casing, of apressure-diaphragm arranged to extend across the `interior 'ofI ythe 1 same, an inlet-port opening into the casing through a valve-seat arranged in a plane substantially at rightangles tothe plane Aof the diaphragm, a slide-valve 4mountedjn ways to reciprocateacross s aidportV in a direction parallel withv thedirection of movement ofl the`diaphragm in its vibratim'anoperatingstem operatively connected with the central portion of said diaphragmand directly engaging atitsopposite end` said slide-valve, a toggle member,piyotallymounted at one end within the valve casing and iiexibly conL nectedat its opposite end with the valve-operatingmechanism, :the pivotal axis of said toggle member being so located relatively Ito its point of connectionwith the valve-oper#` ating-mechanism thatsaid'elatter point moves through an arc which yapproaches Vthevalve'- seat as the valve is brought to its closedposition and a s ring` arran ed to normall` force said valve yinto opening position.

42 In a reducing-valve the combination of a t valvefcasing provided with aremovable end wall having the form of .a screw-cap, a pres-1 sure -diaphragm arranged to'extend across'tlwleinterior ofthe casing at the pointof juncture between thescrew-cap` and 4bodyof, thecasing, an inlet-port opening through a part ofz the side wall of the casingbeloyv the'diaph'ragmvand extending substantially/at right angles thereto, Valvalveseat block mounted upon thewinterior of thecasing and provided withaportarranged inl register With said in let-port, ways formed in saidQvalve-seat block,

a slide-valve arranged to slide therein and,4 provided upon its sideremote from the valve-` seat with a lug or projectiom an operatingstem connected with the central portion` ofv thek diaphragmand,` havinga recessed endportion operatively connected withthe pro jection of the 'slide-valve, and a s'pringbarrel connected with said end'capwithin which the upper end of said ,operating-stem. is v,ar-r

ranged to project, a coiled spring arranged ii5 t within said barrel to act upon the operatingstem, means for adjusting the tension of said spring, and a toggle mechanism operatively connected with said slide-valve and acting to force the latter positively against its seat as it approaches its closed position, substantially as described.

5. In a reducing-valve the combination with the valve-casing provided with an inlet-port opening through one side thereof of a slidevalve arranged to reciprocate across said port, and a toggle-lever pivotally mounted at one end Within said casing at a point remote from, and substantially opposite said inletport and having its vibrating end operatively connected With said slide-valve by means of a slot-andpin connection, whereby the valve is free to move away from its seat during its opening movement, but is forced positively to its seat as it approaches a closed position, and means for reciprocating said valve endwse, substantially as described.

6. In a reducing-valve the combination with the valve-casing provided with an inlet-port opening through one side thereof of a slidevalve arranged to reciprocate across said port, and a toggle-lever pivotally mounted at one end within said casing at a point remote from, and substantially opposite said inletport and having its vibratin g end operatively connected with said slide-valve by means of a slot-and-pin connection, whereby the valve is free to move away from its seat during its opening movement, but is forced positively to its seat as it approaches a closed position, and a spring arranged to act upon said toggle member to counter-balance the Weight of the latter, and connected parts moving therewith, substantially as described.

GEORGE W. LORD.

Witnesses:

ALBERT 1I. GRAVES, FREDERICK C. GOODWIN.

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