US1545990A - Fluid-regulating device - Google Patents

Description

FLUID REGULATING' DEVICE 4Filed July 23, 1923 2' Sheets-'Sheet l fn vengar July 14, 1925. 1,545,990

S. S. WEEKS FLUID REGULATING DEVICE Filed July '25, 1923 2 sheets-sneer 2 immun@ I: Il i y I a A I ',By .265m

Patented July 14, 1925. .i

FLUID- REGULATING DEVICE. i

Application'led' July 23, l1923. Serial No. 653,399.

To all whom t may concern: v f

Be it known that I, SHIRLEY S. WEEKS, a citizenl of the' United States," residing at Providence, in the county of Providence and State oit Rhode Island, have invented'certain new and useful Improvements in Fluidleg'ulatingv Devices,.of which the following Ais a speciiication. f x i ,y

My invention relates vto inidregulating devices such as reducin'g'valves, pump governors, burner governors, and vacuum regula- The essential objects ofy my device, in addition tofthosc commonly'sought in this class vof devices, are' to impart anincreased move- -ment 'ofthe valve `stem relatively. to the-diaphragm, whereby a more sensitiveaction of the latter operates-the valveg-vtoenable the safeemployment of a more tenuous valve stem;rand'to eliminate the possibility-of eX- 'cessive strain upon the valvev stem whereby the Ylatter'in present constructionis caused tobuc'kle, especially when foreign matter ac- VOther objects and advantages willl lappear cumulates between the valve and valve seat.

' 'from an inspection oftheV specification.

' ,"Tothe ends above detailed and suggested vmyfinvention consists in such parts and in suchrcombinations oi partspas'fall'within 'the ,scope-'of the appended claims vIn the" accompanying drawings which forma part of thisspeciication, and ,where-A "fsaid `portion isv -a diaphragm 52 toy whose lowerf face is fastened' bya screw'l a-,cir-

cular plate 56 extending into the recess 50 and provided `with a central lug 58 dependt,

in Lis", shown merely-the preferred` form' 'of mydevice,

` Figures 1 and2 are'verticalcentralfsecvtions offmy device, showing the valve in closed and open positions respectively,

' Figure' 3, a rear elevation of-the same,`

,Figure 4, a transverse section online Figure v5a detail perspective view ofthe Vlever. i

' LikeV reference'.V characters 'indicate like parts throughoutthe viewsl In the embodiment of myfinvention herein illustrated 8 isa valve casingprovidedV with the inlet and outlet openings?) 'and 10 .tor vthe 'stem or other working fluid passing 'to the pump o-r compressorthrough the'inlety and outlet pipes 11 Vand 12 respectively.

14 'and' 'l5r` are the seats of agba'lanced 'valve lconsisting of fthe shank 17 *and upper and I lower valve 'portions 18 and 19'attac'hedfto l the" 'valve stem A 20'. It l will be understood that the 'balancetype'of valve is not exclu- Wreaths .Sin'gleifypemey obviously be.

substituted therefor. 22 is the usual stuif- `ing box, and 23, a yoke frame'connected' with i the valve casing by bolts 25. 'In detailthe 'frame comprises a disk shaped base 26, and

uprightsf 27 and k28 rising ffrom'fydiametrcally. opposite-points-on the base.- The latright is'a-nannular top portion vor arm 29.

vIntegral;V with the upright is anv annulartop portion jor disk 31, integral with whose flower face-"inVK its diametricallyf'opposite margin'is av depending tubular shell 'or"re- Yceptacle 33, which in turn vis iny one piece The -latter lis threaded intoth'e former as at il for` the purpose of adjustment'.y Upon the seat 39 restsVr the lower end of a helical main spring 4 2 l which supports -upon its 'upper end afnutor spring seat 43engaging a thread 45 on the rod 40jfor adjusting pur-V poses. l Adjacentthecentralopening 47 of "the frame portion 31,-V upon itslowerfface isa projection 48'i`n vertical alignmentwith the rod 40.V The upper facel of the portion 3,1 is provided withja circular vrecess k5,0 con centricY with'the opening 4,7, andgresting on ing through the opening`47- 4Restingon the diaphragm. is a done `shapedhousing plate providedv with a depending'peripheral duct secondary pressure to the diaphragm chamber 68.

Referring to shell or housing 33,- which is located diametrically' opposite the' projec tion 4.8,V its rlower lportion hasan internal thread6r8 to receive the thread 69 of ascrew which closesthe-housing andforms the support of a helical relief spring 7.2." -Restingon the spring vand loose in the housing is a cylindrical block 74 in which'is' a pintle 76 slidable vrin'vertical slots 17in vthe housing, vas shown'in Figure 4. VdPivotedfat its PATENT I SHIRLEY s. WEEKS, or PROVIDENQERHODE ISLAND.

'ter uprightl has an outwardly curved upper Y vportion or arm 29. AIntegral with the 11pretiene-911' @ariete .iste lever-'79; In...

lfrom 4its seat. Y In Figure 1- the valve is lshown seated by the 'action ofV the fluid which enters-the inlet 64 into thecl'iamber .661' and depresses the diaphragm 52 and its plate 564 in -the recess 50 to a position nearly or just injcontact/With the portion. 31 of the iframe .This depression acts through the lug 58 and llever 79 to depress the valve through 'thestem sections 40 and 20'. If, however, thepressure of the'luid'is exces- .sivegany undue strain on the stem is relieved by v thedownward movement of the attached end of the lever 79 which, through the block 74', is mfetbythe yieldingpressure of the spring 72; Thus the common buckling yor bending of the valve stem is prevented.. The vextent of downward travel of theplate andlever end 51 is limited at will by the adjustment alorded by the threaded connection 4l of the stem sections.y The springs 42 and 72 are adjustable by the nut or yspring seat 43 and plug or screw 70 respectively.4 'Ihespring 72 ris more powerful than the spring 42.

It willbe noted that the valve stem is out of; vertical alignment with' the center of the diaphragnnpr' of the piston, when a p ijs# -ton is substituted for a diapliragm By virtue offthis location and theinterposition of the lever 7 9 any impulse of the diaphragm 52 is lineally multipliedfuponlthe valvejstem at the lever extremity 8l. 'Ehe 'valveaction is therefore more extensive jan'd delicate 'than' would otherwise b'e possible.

- YThe elimination of undue strains is further important because it' enables the valve stem to be of reduced dimensions thereby reducing friction/through the stuffing boi.- 'Furthermore other parts may be -ofreduced dimensions and therefore less ve'um'bersongie andexpensive.l

- AIt is to be understoodthat the form of my invention herewith shownand described is 'to'be taken as a preferred yexample fof the same, and that various 'changesY in; the shape,

eieand arrangement-ol"` .parte vmay be rev sorted te Without departing tronlrthe spi-rit of the invention or 'the scopeofthe. sub- .a .power inlet and outlet therein', ,a `valve f member the casing, a stemonthe valve power inlet in the frame, a movable impelling member in the frame vertically ec. centric to the valve stem and actuated through the secondaryinlet, a lever engaged by the' 'i'ipllig member and engaging the rstem and arranged to aid in preventing buckling of the stem, and yielding means Y for fulcruining the lever.

vpelling member contractingfat one endwith the valve stem, and yieldingly fulcrunied'at tsp'thr edf Y t f 3. In a fluid regulating device, a casing, an inlet -and outlet. therein, 'avalve member inv the casing, a stem onthe valve member, a frame on the casing, a spring carried by the stem engaging the casing, a secondary power inletin the frame, a ,movableiim pel-ling member ingthezfr'ame oset'fiom the valve, a lever pivotally supportedV intermediatel its length upon Y the impelling member-and engaging the stem atone side of its pivotalpoint, and a second spring in theV vframe supporting a'portionl of the lever at the other side `of its pivotal point;

4,111 a fluid regulating device,z a casing, an i'nlet and outletthereim a valve member inthe casing, a stem' on the valve member, a

casing, a secondary power inlet in the iframe,

a diaphragmin Lthe frame adjacentthe secf ondary inlet androut) of alignment Vwith te valve stem and actuated -directly by the-Huid entering said secondaryin et, a leveiipivotally supported intermediate its length by the diaphragm resting at one en don the stem, a block slidablymo'unted in the frame pivotally connected to the other end of the lever, and asecond spring in the frame supporting the block.

5. In a fluid regulatingdevice, a' easing,V

an inlet and outlet therein, a valve member in the casing, a stem on the valve meiiibeij;i a

nut on the ,stema a spring s upp'ortedby the frame and bearing against -thej nut,- a; tubular housing on the YAframe parallel with the stem p rovidedwith lateral openings, an adju-stable plug the bottom of thehousing, a

Vspring:in the .housing resting on thefplu-g, a

block slid-ably Inountediin the housing restthey iframe ladjj-ac ent the secondary inlet,j a disk upon thediaphragm, a 'lug uponthe ing its free end resting on thev stem said ing: on the spring, a pi-ntle in the plug-,ex tending through thehopenin'gsi al secondary .power inletyi-n the frame, a diaphragm in ydish and a lever pivotally mounted on the* l vlug pivoted at one end tothepintle and-hawV springs being disposed upon opposite sides of the pivot of saidlever.

6. In a fluid regulating device, a easing, an inlet and outlet therein, a valve member yin the casing, a stem on the valve member,

a frame on the casing, a secondary power inlet in the frame, a movable impelling member in the frame ofset from the valve stem, a lever pivotally connected With and engaged intermediate itsvlength by the impelling member and engaging at one end the valve stem, and a spring in the frame supporting the other end of the lever.

7 In a fluid regulating valve, a casing with inletand outlet, a valve controlling the same, a valve stem therefor, said stem being in adjustable sections, a spring acting on said stem, a diaphragm, a secondary power inlet for actuation of said diaphragm, a lever pendently supported from said diahraomwith one end restin on said stem` P e and means embodying said lever for pre venting buckling of the valve stem.

In testimony whereof I have affixed my signature.

- SHIRLEY S. WEEKS.

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