US1146011A - Valve. - Google Patents

Description

F. H. MASON, DECD.

M. H. MAsoN. c. A. sARTLEsoN a R. R. Glu., ExEcuT VALVE.

' MPLICATION FILED AAPR. 3| W13- 1,146,01 1.

ORS.

3 SHEETS-SHEET 3.

93 L @5 lig@ Il here 796 I Patented J u l-y 13, 1915.

UN'ITED STATES PATENT OFFICE.

FREDEBTC H. MASON, OF SPOKANE, WASHINGTON; MOLLIE H. MASON. C. A.l BARTLESON. AND ROY R. GILL EXECUTORS OF SAID FREDERIC H. MASON, DECEASED.

VALVE.

T al 'ff/'7mm lif m f/y/ conf-ern Be it known that I. Fnnniiiuc H: MASON a ycitizen ot the United States. residing at 'may be mentioned those in which a prolonged opening of the valve is required b v the manipulation ot an operating-means having but little movement and actuated for a short interval only. Another type or t'orm of valve mechanism in which may be incorporated these improvements is that in which the movement of the operating or actuating means directly controls and governs the extent of opening ot the valve to regulate the liow of fluid. The third form comprises a valve mechanism which can. with t'acility. be constructed so as to be capable of operation at a distance from the valve proper.

One of the leading objects otl the invention is the provision ot' a valve construction which will work equally well under widely ditterent pressures without requiring the ad-' justment or regulation ot' any part of the valve structure. Thi,`- is ot' special importance when it is remembered that in the large office buildings of the present day. the water pressure is yditterent on every floor of the building. and it an adjustment or regulation ot' the valve to meet these dill'erent pressures is necessary it occasions much trouble and diliiculty in securing the proper adjustment.

Another feature of my improved structure y resides in the positive means which prevents leakage ot the, fluid about or around the stem of the operating-mechanism. which in some instances may be a pusli-button-con struction.

A further object of the invention is the elimination of noise, vibration, water-hammer. or hissing.

It will be observed also that l have been able to incorporate in the various embodiments ot this invention many features of simplicity ofconstruction and durability of parts, and that the valve, although it re- Speccation of Letters Patent.

Patented July 13, 1915.

Application filed April 3, 1913. Serial No. 758.629.

mains open a substantial length of time to secure the proper flushing when it is used t'or such purpose. has. nevertheless. only a limited movement or travel. y

In order that those'sltilled in this vart may have a full and complete umlerstanding of the invention. I have illustrated preferable and desirable embodiments ot the same in the accompanying drawings forming a part otl this specification and to which reference should be made in connection with the tollowing detailed description ot' the construction and operation ot' the parts and elements constituting the various structures.

In these drawings: Figure l is a central vertical section through a flush-ing valve embodying my invention. such valve being adapted to have a retarded closing movement whereby to secure the discharge ot fluid during the desired intervalotl time. ln this view the valve is shown in closed position. Fig. 2 is a similar view illustrating the valve in open position: Fig. 3 is a bottom plan view ot' the main valve. the same being shown von an enlarged scale; Fig. l a top plan view ot' the main valve with the inner holdinganeans for the packingring removed so as to more clearly show the construction and arrangement ot the cleaning-pins for the small ports of the valve; Fig. 5 is a perspective view showing the bottoni side ot' one ot' the wings of the pushbutton operatiiig-mechanism; Fig. G is a plan view of the structure shown in Fig. l with the push-button operatinganechanism and secondary or diaphragm valve removed, a. portion of the structure being broken away to more clearly illustrate the'means employed for mahing a Huid-tight connection between the valve-casing and the valvehousing: Fig. T is a horizontal section on line T--T ot Fig. 2. the parts being viewedV in the direction indicated by the arrows; Fig. S is a. central vertical section of a basincock embodying the invention; and Fig. 9 is a modified valve construction capable .of operationat a distance. v

Referring to the drawings,V more particulari)r Figs.l l to i" inclusive. it will be observed that the construction embodies a valve-housing 2O having at one side an inlet 21 and at its bottoni' an outlet 22. `As is clearly shown. ltor :example in Fig. `l. this valve-housing or incl'osing shell is hollow7 having an interior chamber 23 of substan tial capacity. Projecting inwardly of this valve-housing is an annular upstanding flange 24 surrounding the outlet 22, lthe inner edgel of such .flange fori-ang a seat for themain valve described hereinafter. The' 'its bottom end into the outlet 22.

The valve-casing referred to above comprises a main body-portion screw-threaded on its exterior so as to be capable of being screwed4 intothe housing 20 by cooperation'with the threads 25, asis'clearly illustrated. Above ythe threaded part the casing has a. shouldered portion 31 adapted to 'fit into the enlargement of thevalvehousing, and in order to form a fluid tight joint between this portion 31 and the top -wall of vthe housing, I vprovide the latter with an. external circular groove 32 accommodating a ring-packing 33 ofany suitable or desirable material, and coperating with such packing is a sharp edged rib 34.integral With and projecting inwardly from the por- Y tion 31 of the valve-casing. .As will be readily understood, this rib embeds itself in the packing, toprovide the fluid-tight joint referred to. Outwardly of the portion 31 the casing has a substantially flat enlargement -35 adapted to bear aga-inst the peripheral or marginal portions of the top flat surface of' the housing 20. Upstanding from'the part 35 is an'integral'boss 36, hexagonal externally and screw-threaded on its interior at 37 for the accommodation and retention of a valve-operating mechanism described here- -and is' defiected upwardly inafter. Extended across the interior of this valve-casing is. an integral wall 38 having in its outer face acentrally-disposed round recess or cavity 39 which is made to communicate with the discharge channel 28 by means of av plurality of radially-disposed passages 40. The portion of the wall 38 at the center of the cavity 39 'is aperltured at 41 to provide a port or opening to form'around the port a valve-seat with which a .secondary valvereferred to below, connects. This casing 30 has a depending or inwardly extended flange or petticoat 42 overlapping for a short distance the upper end of the flange 24, being spaced away therefrom a lsubstantial distance, as indicated in Figs. 1 and 2. The lower end of this flange or petticoa-t 42 is reduced in thickness and is screwthreaded for the accommodation of a tapered or conically-shaped shell orA flangeextension 43 which constitutes a sleeve, surrounding but spaced away from the flange 24. The interior of this valve-casing 30, which is removably fitted in the valve-housing, constitutes a. cylindrical chamber-14 in which snugly but slidingly fits a main valve 45 comprising an enlarged shell-portion 4 6 outstanding from the main body 47 of the valve, the latter at its inner edge having an inwardly-extended flange 48 acting as holding-means for the valve packing 49, such as rubber, leather, or any other suitable'material, and which is adapted, in the closing p0- sition ofthe valve, to rest upon the edge of the flange 24 and close communication between the inlet 21 and the outlet 22. The

inner portion of the body 47 of the valve is screw-threaded to receive a similarly threadedv packing-retainer 50, which is adapted'to be screwed into the body of the valve and bear against the top surface of the packing 49, as is clearly illustrated. At its central portion such retainer has a boss or enlargement 51 with a. slot 52 for the application of a screw-driver or similar tool to effect the screwing in of the retainer against the packing. Internally this boss has a screwthreaded recess 53 for the reception of the inner end of the screw-.threaded stem of ai packing holder or shield 54, provided with an angular head 55 to facilitate its turning and threading into the cavity 53, the packing 49 being apertured at its center for the accommodation of the shank of this holder. v At a plurality of points around the circumference of the main body 47 of the valve, the latter has. on its under surface recesses 56, and the top walls of such recesses, which are preferably made comparatively thin, have holes or apertures 57 forming ports for the passage of the fluid from one side to' the other of the main valve. Owing to the small size of these ports, it-is desirable to supply some means to prevent them from becoming clogged or choked with mud, sand, or the like, and to effect this purpose, I use in each of these holes 57 a small-headed p-in 58, which may be like the ordinary pins used for fastening ends of ribbons. In other words', they are common pins of small variety. These pins are prevented from falling down through thel apertures or ports in which they fit by means o f4 their heads, and they are also prevented from lpassing upwardly out of such ports by a circular flange 59 extended laterally outwardly frm the top of the packing-retainer 50 and overlying or overlapping the heads of such pins. It will be noticed from the illustration that the retaining flange 59 is located some distance above the heads of the pins so that as the main valve reciprocates in its opening and closing movements, ithe pins will Alikewise shift in their'ports, acting to dislodge anything tending to their clogging or closing.

In other words, these pins are freely and loosely. held in the holes. Owing to the inertia of the pins, and possibl'v, to the currents in the fluid controlled. these pins have a distinct thrust and movement relative to the -main valve, whereby the}T constitute effective means for keeping these small ports open at all times. t It will be noticed that this main valve is considerably larger than 'the small opening of the sleeve 3, which vpermits the latter to act not onlilv as means to 'determine the direction of flow of the fluid in the valve, but also as -a retainer to hold the main valve in the casing 30 when the. latter is unsci'ewed from oi' vis being replaced in the valve-housing :20.

,The operating-mechanism for the combination diaphragm and secondariv valve coinprises the .following parts and instrumentalities. .A flexible combined diaphragm or gasket. and secondartvY valve 60, which may be made of rubber or other suitable material, has its circular edge-portion held in fluidtight engagement with the top surface ofthe wall 3S by means of a screw-threaded fitting 6l screwed into the top of thevalve-casing, the lower end of such fitting bearing directl'y against the edge-portion onlv of the To limit and restrict the compression of such resilient di- -aphragm b v 'the fittingl 61, the latter is shouldered at 62 to bear against the outer face of the valve casingyand b v this means i excessive ,compression .of the edge of the diaphragm or cutting of the saine is prevented. To facilitate the threading and unthreading of this fitting 6l it is made of hexagonal oi' other angular shape at 63, whereby the application of a wrench thereto may be effected with facility and ease. This fitting 61 has centrally therein a cylindrical chamber 6l adapted to slidingl)v receive the enlarged piston-portion G5 of a valve-stem 66, the inner enlarged head end (5T of which is molded in the correspondingly enlarged vcentral portion of the rubber secondary `valve or diaphragm (30, such rubber under `modation of a pusli-button T2 which has along its inner -edge a small outstanding flange T3 to .prevent its outward passage through the holder or bonnet Tl.` The outer v portion'of the fitting G1 and the inner portion of the holder or bonnet Tl are provided with registering cavities forming a chamber Tl containing a pair of substantiall)v semicircular wings T5. each provided along its straight edge with a seini-circular recess adapted to fit around the reduced portion TT of the stem Eat-h of such wings onitsv under surface has a fulcruni rib TS. and on its grooved edge opposite recess T6 it has an outturned portion TS), on which the flange T3 of the push-button rests.

The operation of this valve. so far as its functions an'd peculiarities are at present understood, appears to be as follows: As-

suming that the valve shown in IFigs. lv to i is applied to water-closet structure requiring flushing*` and that it is desired to permit the water to pass through this valve for a gi. en period with onl v a slight movement of the push-button. and without requiring the attendant to maintain pressure on the pusli-button. but who merel;Y presses inwardlv the button T2 and at once releases such pressure. ll'hen the bottoni moves inwardlv in response to such manipulation, the circular flange T3 of the button b v engagement with the ribs or ontwardlv-turned parts T9 of the two wings T5 rocks both of such wings on their fulcrum ribs TS which rest. on the wall of the fitting 6l forming the bottoni or inward wall of the cavit)` Tl. Such forward movement of the outer portions of these wings causes an outward movement of the recessed parts TG. which. b v encircling the stem TT of the valve. lift or shift such stem outwardly in opposition to the expansive force of the spring GS. the stem being guided in this movement bv the cooperation of its enlarged part (35 with the tting (3l and the stem (36 with the bearing in which it lits. This lifting. or outward movement of the stem causes a flexing of the rubber or other resilient 'packing or diaphragm GO. shown cin Fig. 2. whereb)Y the valve -ll is opened. This .releases the pressure of the fluid on top ofthe main valve in chamber il. In other words, it causes an unbalancing of the pressures. on the two sides of the main valve, o', stated differentlv. it reduces the pressure on the top of the valve to less than that on the under side of the valve. rl`he pressure below the main valve. therefore. pushes the latter upwardly rapidlv, expelling the. water through the port lil, from which it flows into the chambei 39 and through the passage -LO and groove 2S to the discharge passage :29, and into the outlet 22. As soon as the main Vvalve is thus lifted bv the water pressure beneath it from its seat on the flange 2l, the discharge of water occurs through the outlet '79 the suction of which facilitates and aids in expelling the water from the,

chamber il above the valve. The WaterU in entering the inlet 21 fills the entire chamber 28 surrounding the valve-casing and sleeve 43, and also the 1nwardl 'pro]eetl-ng outlet flange,4 and before tliis',wa'ter an escapel as it passes upwardly through the sleeve 43 and valve-casing l2, is directed upwardly againstfthe"main valve and in order to escape through the outlet '22 is compelled to reversev its direction oftravelbeneathuthe main valve. This flow of the water assists in maintaining the main valve away fronr its seat and therefore, to a considerable extent, retards its closing action. Stated differently.4 the forward pressure of the water passing into the valve-casing 30 will be concentratedand directed against the valve in 4opposition to the direction the valve moves in closing. It should beobserved that the area of cross-section of the inlet 2l is greater than that. of the outlet 22, whereby suiicient and adequate pressure is maintained within the valve-casing to retard the closing of the main valve, as explained above. Also. the factthat the inlet and the chamber 23 entirely surrounding the valve-casing are at the same level as the main valve and its associated parts, assists in thedit'ting of the main valve and the retarding of its closing. because of the prolonged pressure on its bottom face.` GraduallyY the water passes through the ports orholes 5T, and possibly. some of the water passes around the valve so that gradually the liquid accumulates above the main valve and its pressure increases, and after an interval the main valverdue to the greater pressure on its top, is again seated gently :on the lseat of the discharge flange 2l. During this gradual closing travel of the valve. the pressure on its under side increases due to the fact of closing the discharge,.opening, which vaction results in a gentle and noiseless seating of the valve. During the'opening and closing movement of the main valve. the pins 5S are jarred and move in their ports 5T so that the latter are at all times maintained entirely free fronrclogging and the possibility of becoming accidentally clogged and inoperative. It should be observed also that there is no packing or screw-threaded connection between theA top of the interior of the valve-casing and the other parts .of the structure, so that/possible leakage 'at this portion of the device dueto high pressure is entirely eliminated. Obviously', the com- A pa-rtment formed byV the combined valvecasing and sleeve 43 is divided into two chambers by the main valve, the -lowerchamber being betweenthe discharge flange 24 als and the valve-casing and sleeve referred to, While the upper chamber is entirelywithin the lvalve-casing itself. When the Valve is in closed posit-ion, the pressure on the top of the valve due to the liquid pressure in the upper chamber and .the area exposed *is greater' than that on the under side of thev valve. so that the latter is maintained closed.,- but when the valve is closing the pressures on its opposite sides are substantially equal or nearly balance which results in a slow and easy closing of he valvei Regarding the secondary valve controlling the port -l vl, aA valuable function is obtained in the Varrangement ot'parts, particularly by using the edge-portion of this secondary valve as a gasket, so that under no circumstances 'an the .waterissuing from theport l1 leak around the push-button mechanism. because a liquid-tight jointis maintained by means of the diaphragm or rubber valve member (l0. Not only is the arrangement ol parts etl'ective in securing the functions and operations referred to. but the elements entering into-the constructionaresimple in structure` may be readily taken outand rcplaced, and are not at all subject or likely to-damage or injury. i I wish to have it umlcrstood that although the movement of the. push-button is e.\' tremely slight, possibly not to exceed 1 3&2 of an inch, and although the timeotl pushing such button is possibly not more than one second. the water will continue to llow at full capacity through the main v alve for a considerable number ot' seconds. s ullicient to obtain a full and complete flushing action such as is desired. the siphon bowl.

Although l have indicated above a theory as to the operation of tlhisstructure. l do not wish to be bound by such theory. it be# able to open and close the main valve gradually, that is, without the retarded action above referred to, it ismerely necessary to make the port l1 considerably smaller so that the water or other fluid cannot flow therethrough as rapidly as in the construction shown. Under these circumstances, the operator can open the valve any predetermined amount andmaintain substantially any predetermined flow as long as he de' sires by merely holding his thumb von `the push-button, and merely holding thelatter an amount andperiod corresponding to the ow desired. In order that such a regulated flow maybe more definitely obtained, as for instance, in abasin-cock, I have illustrated and the-necessary relill of 100 i an embodimentof such iuventionin such a device in Fig. S. In this case. the torni. shape. and contour .of the combined nozzle and basin-mel; ot' .valve-housing 5U is somewhat ditierent t'rom that of the corresponding part- 20 ot' the valve shown in Fig. l. but all ot' the main features are .present in both constructions. vIn the device of Fig. S the valve-housing is provided with an inlet Sl and an outlet S2. The other parts of the mechanism are'otl substantially -the same character as those in Ifig. l with the exception ot' the secondary valve-operating mechanism. and for that reason I have not deemed it necessary to describe in detail the main valve. the valve-casing. the depending sleeve. the circular iiange around the outlet. the water-tight joints. cleaningV pins, etc., because `these are suiiiciently clearly illustrated in F ig. S and a minute and precise description of the mechanical features of construction is apparentlyv unnecessary. In this basin-cock I provide an inclined discharge passage S3 corresponding to the pas-y sage 2.() otl the other constructiombut in function and operationthe parts of this assembled structure are substantiall v thesame as those of the other device. The secondary valve-operating mechanism ot' this basincock comprises a bonnet or shell Sl screwthreaded into the top of the valve-casing, and bearing against the secondary flexible valve 85 which in this .instance is ot' simple modified construction in that it not only has molded in its enlarged central portion the valve stem. but also a cleaning-pin S6 projecting downwardly into the port of the valve casing. which. in this particular embodiment otI the invention is desirably smaller than the corresponding port of thev retarded closing device of Fig. l. The stem 8T of the valve whose head is contained within and molded in the rubber has an outer` enlarged screw-threaded portion SS which co-acts with a correspondingly threaded cavity in an operating melnber 4or sleeve 89 held from passing 'outwardly through the central unthreaded opening 90 of the bonnet Si by an outstandingange 91. The protruding portion of this-'member 89 has fastened thereto in any desired manner, a handle 9:2 which overlaps the bonnet at 93 adjacent to the openingQO, so

- that by turning this handle the member 89 will be likewise turned and because of the screw-threaded connection between such member and the stem of the valve, the valve itself will` be raised or lowered, depending lupon the direction of turning of the handle,

erator, instead of merely temporarily7 actuating the ope'ating-mechanism turns the same the desired amount to obtain the desired flow and the main valve will theu-tloat or remain open in a position which is dctermined by the extent oi turning of this handle. The valve will remain open until again closed by the operator. In this case the handle has a positiveand 'direct regulation of the amount ot' How as distinguished from a more or less predetermined flow or vretarded cessation as in the previous instance. v

Each movement of the secondary valve acts to ei'ect a cleaning ofthe valve-casing port because of the reciprocation oit' the cleaning-pin positively attached thereto. Inv thisinstance the size ofthe port of'the valve-casing in' which the cleaning-pin S6 e projects is so chosen as to maintain a pressure in the chamber above the valve. In other words. the tiuul can flow through the Aports of the main valve because ot' theirsize. and also around the valve more rapidly than it can ow through the small port of the valve-casing. Because of this. the operator has complete control of the actuation ot' the valve.Y It will be appreciated theretore, that the valve will open or move from its seat an. amount depending directly upon the extent of turning of the operating-handle. which of course. determines the extent of lifting ot' the secondary valve.

If it should be desired to make a basincock of this general character of the selfclosing type, it is siinplv necessary to substitute the secondary valve-operating pushbutton mechanism of Fig. l for that shown in F ig. S. and under those circumstances. the person operating the valve has direct control of the amount of flow through the extentY to which he thrusts inwardly the push-button. Obviously', the water will continue to flow as long as the push-button is maintained depressed. and will close as 'soon as the pressure on the button is released. In case it is desired to provide a construction of this general character operable at a distance. this can be readily accomplished, as, for instance, by means of the construction shown in Fig. 9. The valve-housing, valve, and other associated parts are substantially the same as those shown in Fig.' l, with the exception of the'valy-'e-casilvtgv and the secondary valve. In this cas'etlie casing 94 has a fiexible diaphragm secondary valve lheld in position in association with the valve-casing port '96 by means of 'an apertured fitting 97 binding and `holding the edge-portion of the diaphragm in the casing. In this instance the 'gvalvecasinghas secured into its top a dome or shell 98"" leading from which is a lpressure-pipe 99 fitted at a distance with a push-button valve 100 connected to a drain 101.' In order to secure a pressure on the. top of the secondary j. ,then'cha-mber 23 with theinteriOr of the .cas-

ing or shell 98. `Owing ,t o thepressure which will be `present iri'thetop portion of this valve-construction, a. fluid-tight gasket- 4joint 103 is. used Abetween.the' member 98 10 and thevalve-casin'g."

,Under vn o`rmal' circumstances, when' th'e push-button valve. `100 is closed, the fluid in the yalvehousing 23,' becausofhe comniunication between these two compartments by the passages 102. Suchpr'essure on top of the' secondary valve 95 maintains' the sane'closed on they port 96,l which results in the ,main valve remainingr on its seat ao-. aroundfthe discharge opening, as will be- 'ieadi'ly understood.- Then it is desired to have the main valve open, the operator merely pushes the springpressed buttonof theivalve 100 so as to release the pressure in thecasing 98, the fluid iiowing' through i the eXit or discharge-pipe 101 more rapidly than it can enter the lchamber 98 through the plurality of passages 102. In this way the pressure in 'the chamber 98 is reduced sufficiently 'so thatV the pressureon lthebot- A tom side of the secondary valve 95 will eX- ceed it "and cause a lifting of such valve, thereby opening port 96 with` a resulting opening of the main valve, as has been ex- 35 plained in' connection with the other construction. To close the main valve it is merely necessary to release' the pressure on the push button ofthe valve 100, which closes such valve, the necessary result be- 40.. ingthat the pressure accumulates in the '50 the amountof flow, depends to a large eX- tent upon the size of the port 96. vThile I 'have herein shown several cinbodiments of this invention, and have described their structural features rather minute'ly,I do notswish to have it understood thatthe 'invention is limit-ed and restricted to these particular embodiments, because the A"invention may be incorporated in a large variety of devices and many minor mechanical changesvmay be made in the strucc tures shown and described. without departure from the substance of the invention and without the sacrifice of any of itssubstantialV benefits and advantages. Above, Ihave G5 indicated that .the valve may be used in conv telescoping over and spaced away from said I claim:

1. In a valve,.the combination of a hollow valve-housing having an inlet thereto and an outlet therefrom, said outlet being surrounded by an inwardly-extended flange, a.

ported valve-casing projecting into the hollow interior of 'said valvehousing and tele 'scoping over and. spacedaway from said pressure inthe casing 9S is the same as that flange 'and also spaced away from the wall of said housing, a valve slidable in'said casing adapted by coperation with said outlet flange to establish and break communication betweensaid inlet and outletthe construction having means Ato Vpermit fluid to pass from one side of the valve lto the other, a secondary valvecontrolling the port of said valve-casing, and means to actuate said secondary'valve, whereby the fluidin passing from the inlet to the outlet through the housing andthe space' between saidflange and valve-casing strikes against thefmain valve in adirection substantially thel same as the opening travel of said valve, substantially as described. 2. In a valve, the combination of a hollow valve-housing having an inlet thereto and' 9 5 an'outlet therefrom, said outlet being surrounded b v an inwardly-projecting flange, a ported valve-casing fitted in said housing and projecting into the hollow interior of said valve-housing, said projecting-portion telescoping over and spaced away from said lso 4flange and also spacedaway from thewall of saidv housing. a sleeve on said projectingportionofthe valve-casing, said sleevealsc 105 flange, said sleeve colnpri'singan inward extension of the valve-casing. a valve slidable in said casing andadaptedby cooperation with saidoutlet flange to establish and break communication between said inlet .and outlet, the construction having means to permit fluid to pass fromvone sideof the valve to the other, a secondary valvel coperating with the' port of said casing, and4 means to operatesaid secondary valve, whereby the fluid in passing Afrom the inlet `to thel outlet through the Ehousing and 'the space between said flange,` sleeve, and valve-casing,v is caused to strike the valve ina. direction sub; stantially the same as that of the opening travel of the valve, substantially as described. v

3. In a valve, the combination of a hollow valve-housing having an inlet thereto and an outlet/therefrom, said outlet being surrounded by an inwardly-projecting flange,`a ported valve-casing removably tted in said valve-housing and having a portion project- 'ing into the hollow interior ofsaidva-lvehousing, said projecting-portion being 1`30 Eli) .stantially as described.

spaced away trom' the valve-housing wall, said projecting-portion telescoping with and spaced a way from said flange,'a sleeve having a tapered inner chamber removably fitted on and toriiiing anvextension ot said inwardlyprojecting portion ot' the valve-casing, said sleeve encircling and spaced away from said flange. a valve slidablein said casing and adapted by cooperation with said outlet` flange to establish and break communication between saidinlet and outlet, the construet'ion having means to permit the fluid to pass trom one side of the valve to the other, a secondary valve cooperating with the port ot said valve-casing, and means for operating said secondary valve, whereby the fluid in passing from the inletto the outlet through the space between said flange', sleeve, and valvecasing, is caused'to. strike the valve in al direction substantially the same as that of the opening travel of the valve, said sleeve not only assisting ingeverning the direction ot How of the fluid, but also acting as a removable retainer to maintain the main valve in the valve-casing, sub- 4. Ina valve. the combination of a hollow valve housing having an inlet thereto and an outlet therefrom. said outlet being surrounded by an inwardlyexteiided ilange, a ported L valve casing projecting into the hollow i'nterior of said valve-housing and telescoping over and spaced away trom said flange and also spaced away from the wall of said liousing. a valve slidable in said casing adapted by cooperation with said outlet-flange to establish and break communication between said inlet and outlet, the construction having means to permit fluid to pass from one side of the valve to the other.. a secondary valve controlling the port ot' said valve-casing, a fixed bonnet or cap, a member having a rotatable bearing in said bonnet buty held from longitudinal movement, a valve-stem -associated with said secondary valve, and a.V

` scribed.

5. In a valve. the combination of a hollow valve-housing having an inlet thereto andk an outlet therefrom, said outlet being surrounded by an inwardly-projecting flange, a ported valve-casing removably iitted in said valve-housing and having a portion projecting into the hollow interior of said housing. said projecting portion being spaced away from the inner-wall of said housing and Atelescoping with and spaced away from said outlet flange, a valve s'lidable in said easing and adapted by cooperation with said flange to establish and break communication between said inlet a'nd outlet, whereby the iiuid in passing from the inlet to the outlet through the housing andthe space between said flange and projecting-portion of the valve-casing is caused to strike against the,

valve in a direction substantially the same as that of the opening travel of the valve, al flexible rubber secondary valve cooperating with the portv of said casing, a'valve-stem having a portion molded in said rubber, a fixed bonnet or cap, a member rotatable in a bearing ot said bonnetbut held against longitudinal movement', and a threaded connection between said rotatable member and the valve-stem whereby turning of the rotatablemember shifts the valve-stein longitudinally and lexes the valve toward and away from said port, substantially as described.

' FREDERIC H. MASON. 1Witnesses Lewis T. GREisr, MARION G. ELwELL.

Images