US1331707A - Hydraulically-operated valve mechanism - Google Patents

Description

APPLICATION FILED AUG. I9. 1919.

P. HAAS.

HYDRAULICALLY OPERATED VALVE MECHANISM.

Patented Feb. 24,1920.

4 SHEETS-SHEET I.

P. HAAS.

HYDRAULICALLY OPERATED VALVE MECHANISM.

APPLICATION FILED AUG. 19. 1919.

Patented Feb. 24, 1920.

4 SHEETS-SHEET 2.

I .l l mm VlAd II/Illfll IIII IVA:

5] nwutoz attomwqS P. HAAS.

HYDRAULICALLY OPERATED VALVE MECHANISM.

APPLICATION FILED AUG. 19, I919.

Patented Feb. 24,1920.

4 SHEETS-SHEET 3 P. HAAS.

HYDRAULlCALLY OPERATED VALVE MECHANISM.

APPLICATION FILED AUG. l9. m9.

1,331,707. Patented Feb. 24,1920.

. 4 SHEETS-SHEET 4.

PHILIP HAAS, or DAYTON, OHIO:

HYDRAULICALLY-OPERATED VALVE MECHANISM.

Specification of Letters Patent.

Patented Feb.24, 1920.

Application filed August 19, 1919. Serial No. 318,513.

To all whom it may concern:

Be it known that I, PHILIP HAAS, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Hydraulically-Operated Valve Mechanism; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appfrtains to make and use the same.

l y invention consists in the novel features hereinafter described, reference being had to the accompanying drawings which illustrate an embodiment of the invention selected by me for purposes of illustration, and the said invention is fully disclosed in the following description and claims.

Referring to the drawings, 1

Figure 1 represents a water closet installation containing an embodiment of my invention. V 7 Fig. 2 represents a vertical central sectional view of my improved hydraulically operated valve mechanism showing the flushing valvein closed position.

F ig'. 3 is a view similar to F ig..2, showing the flushing valve in open position, a portion of the valve cover being shown in elevation.

Fig. 4 is a horizontal sectional view of the valve mechanism, a. portion of the valve cover being shown in elevation.

Fig. 5 represents a vertical section on the line 5-5 of Fig. 1, looking in the direction of the arrows.

Fig. 6 is a section on line 66 of Fig. 1, looking in the direction of the arrows and showing the interior of the valve'cover or cap.

Fig. 7 is a vertical section on line 77 of Fig. 1, looking in the direction of the ar rows.

' Fig. 8 is asection on line 8-8 of. Fig. 1, looking in the direction of the arrows.

Fig. 9 is a detail view of the transfer tube for establishing communication between the inlet water passage of the back pressure chamber.

Fig. 10 is a detail of a modified form of device which may be used in place of the transfer tube.

My invention relates particularly to hydraulically operated flushing valves for water closets in which the opening and closing of the flushing valve mechanism is effected by water pressure. ThlS type of valve mechanism has always been used to the greatest advantage in buildings where a very high pressure and large volume of water is available for flushing purposes, making it possible to dispense with flush tanks and efiecting the opening and closing of the valve by the pressure of the water, the opening of the valve, the flushing operation, the production of an after filling of the closet bowl, and the final closing of the flushing valve, all being effected in proper sequence by the action of the water pressure, without aid from or interference by the operator, who merely starts the cycle of operation by pressing a button, or otherwise. It has been found impracticable to use this type of valve mechanism in buildings in which the water supply pipes are of small diameter such as have been commonly furnished in the ordinary private house, and where the pressure of water in the main is comparatively low, for the reason that the required volume of water and the required high pressure of this large volume of water was not available, and without it the valve mechanism would not operate correctly. The use of this type of hydraulically operated valve has therefore been almost entirely limited to ofiice buildings, hotels, apartment houses, and other large buildings, and'their use inlprivate dwellings has been negligible.

The object of my present invention is to provide a hydraulically operated flushing valve mechanism, adapted especially for use in private houses and other buildings in which the water supply is conveyed through comparatively small pipes, and at comparatively low pressures, so as to extend to the very large class of private dwellings, the use of this type of valve mechanism with its attendant advantages, and to secure the accurate predetermined operation of the valves under all ordinary conditions, with the same efliciency as is now obtained in installations in which the larger supply pipes and higher pressures are available. In the accompanying drawings I have illustrated one embodimentof my invention selected by me for purposesof illustration, the construction and operation of which I will now describe,

Referring to these drawings, and particularly to Figs. 2 to 9 thereof, 1 represents the main body of the valve which is preferably made of cast metal of substantially rectangular form in cross section, both horizontally and vertically, and provided on its front side with a circular flange 2, for the attachment of a closing cap or cover of dome shape, indicated at.3, and hereinaftermore fully described. Within the main body 1, and preferably cast integrally therewith, is a horizontal partition or wall 1, and a vertical partition or wall 5, the latter being pro vided with-a circular opening 6, surrounded on the outer face of the wall by a valve seat 'Z. The valve body is also provided with an annular inwardly inclined or sloping flange portion 8 concentric with the valve seat 7, and forming an annular inclined shoulder or support for the flexible diaphragm, hereinafter described. Acomparatively narrow passage or chamber, indicated at 9, is thus formed between the vertical wall 5 and the annular flange or shoulder 8, which chamber communicates at its lower end with a larger chamber 10, which I term the flushing chamber, and the valve body is prdvided at its lower end with a flushing aperture 11, leading from said chamber, the valve body being conveniently provided with a threaded nipple 12, for the attachment of the flushing pipe 13, indicated in Fig. 1, and leadingto the closet bowl 141-, which may be of any usual or desired construction. It will be noted that the flushing outlet aperture 11 and pipe 13 are of large diameter, to provide a large flow of water from the valve casing.

Within the horizontal and vertical walls or partitions 4: and 5 is formed a second chamber 15, which I term the water inlet chambenseparated from the flushing chamber by said walls, but communicating therewith through the opening 6 and passage 9, controlled by the flushing valve hereinafter described. The valve body is also provided with an outlet aperture 16 of correspondingly large diameter communicating with this water inlet chamber, and adapted to be connected by a pipe 17 with a closed tank 18, shown in Fig. 1, the valve body in this instance havin the aperture 16 internally threaded, as shown in the drawings to receive the pipe 17.

Within the water inlet chamber 15 is an auxiliary water inlet chamber 20 formed in any desired manner, as for example, by providing a boss 19 within said chamber 15, with a cored or bored recess or chamber 20, the said auxiliary inlet chamber being arranged concentrically with and opening toward the flushing aperture 6, and having preferably at its rear end a threaded recess 21, which receives the threaded inner end of a hollow transfer tube 22, preferably closed at its outerend and at its inner end, and being provided with a lateral aperture 23 within the auxiliary inlet chamber, and a lateral aperture 2& located at a point sufficiently removed therefrom to communicate with the back pressure chamber of the valve mechanism hereinafter described, it being understood that this transfer tubeextends centrally through the flushing aperture and through the central aperture formed at the idnner edge of the inclined annular shoul- 25 represents a flexible diaphragm, preferably of rubber, which is applied atitsedges to the annular flange portions 2 of the valve body, and is held in position by the cap 3, e

which is provided with an annular flange portion 26, engaging the marginal portions of the diaphragm, and being provided preferably with an angular annular flange portion 27 to 'inclose the peripheral edges of the annular flange 2 of the valve body, and providing a neat finish for the valve mechanism. The cap or cover 3 may be held in position with respect to the main body of the valve in any desired way, as for example, by screws 28, as shown in Figs. 2 and 5. The cap or cover 3 is of dome shape so as to provide a chamber 29, which I term the back pressure chamber, on the outer side of the diaphragm 25, in which the water is accumulated for the purpose of acting upon the diaphragm to close the .flushing valve.

The cap or cover is also provided with a held in place by a threaded nut 32,and hav-.

ing a conical valve engaging portion, said relief aperture communicating in this in stance with a'recess 33 which in turn communicates by passage 34L with a short tu bular nipple 35 extending through the front wall of the valve body, and through a marginal portion of the diaphragm, and leading into the enlarged flushin chamber 10 of the valve body, communicating with the bowl 14. The recess 33 is provided with a cap or cover 36 held in place by a nut 37. The relief aperture is closed normally by a conical relief valve 38, the stem of which extends through the cap 36 and is provided with a push button 39 or other operating means. The valve stem is actuated-in one direction by a spring 40 which normally holds the valve 38 in closed position, and the aperture around the valve stem is made water tight in any desired way, for example, by means of a small diaphragm 41, the marginal portions of which are clamped between The hydraulically operated flushing 'valve is carried by the diaphragm 25 and consists 7 preferably of a rubber ring 42 which engages the valve seat 7, and is preferably car by a sleeve; 44 extending .throughan aperture in the diaphragm, provided with a flange on the outer face of the diaphragm, and having at'its inner end a threaded'portion engaged by a nut 45 and washer, for holding the valveproper 42, and shell 43, in proper position with respect tothe diaphragm. The sleeve 44 is provided with a central aperture which loosely fits aroundthe transfer tube 22, with an easy fit, so that when the flushing valve is in open position, as shown in Fig. 8', the waterwhich passes through the transfer tube and issues from the lateral aperture 24, can nevertheless seep into the pressure chamber 29. The. main water inlet for the valve body is indicated at' 50, see Figs. 4 and 7, for example, and

communicates directly with the auxiliary j water inlet chamber 20 within the boss 19, as clearly shown in. Fig. 7, and the valve body may be'provided with a threaded aperture or recess, as indicated at 51, to receive the water inlet pipe from the water main,

which may be as smallas a pipe, for example, and will usually beof that diameter.

It will be seen that as the inlet water enters, instead of passing directly to the inlet chamber 15, it is first received within the auxiliary inlet chamber 20, closely surrounding the transfer tube 22,'so that-aportion of the water tends to pass through the transfer tube, and to be transferred fromthe auxiliary inlet chamber to the pressure chamber 29, to build up the required pressure on the outer face of the diaphragm,to close the flushing valve upon its seat 7, and maintain it in closed position. The lateral outlet aperture 24 of the transfer tube is so located, as shown in Fig.1, that when the valve is in closed position this outlet aperture 24 is outside of the sleeve 44 of the flushing valve, and entirely within the pressure chamber 29, for a purpose which will be hereinafter more fully described, ineffecting the final closing of the flushing valve, and in order to secure the proper transfer of water from the water inlet to the pressure chamber under conditions of especially low pressure and volume, so that the device will always operate, even though water is being drawn in some other portion of the dwelling or building. I prefer to provide the sleeve 44 with a throttling device for the auxiliary inlet chamber, to throttle the communication between the auxiliary inlet chamber 20 and the main chamber when the flushing valve is open, as,

chamber and caused to commence its throt the flushing valve is closed, itwill project into the auxiliary inlet chamber 20, {as shown in Fig.2,while it will be substantially removed from the, auxiliary inlet; clearly shownin Fig. 3, andI prefer to. make this throttling sleeve adjustable longi-q. tudinally, in order'that itmaybe'madeto project more or'less into the auxiliary inlet tling action at an earlier or later period in the closing movement of the valve'as; may be found to be most desirable with the particular water pressure availablewhere this: valve mechanism is installed. To this end the auxiliary throttling sleeve, which surrounds the transfer tube 22,. is preferably 7 threaded into the sleeve 44, and secured'in its adjusted position by means of'a lock nut 61, see Figs. 2 and 3 particularly; '1 also the throttling operation, and in some cases I the diameter of this outwardly extending. flange 62 maybe varied by filing it away slightly, all the way' around, or by filing notches in it, at the time that the valve mechanism is installed, in'case iteshould be found that it affects too great a throttling operation with the particular water pressure available. The water inlet pipe from the main to the water inlet aperture 50, which is indicated at 7 0 in Fig. 1, is provided with an auxiliary cut off cock, indicated at 71, adjacent to the valve mechanism, so that the water supply to the valve may be cut ofl when it is desired, to clean, adjust, or inspect thevalve mechanism, and also for another purpose hereinafter described. The parts being constructed and arranged as shown ion-the drawings, and the valve mechanism being connected to the water suply pipe 70, to the closet bowl 14, andto the tank 18, the operation will 'be as folj i lows. 'As the water enters fromlthe main through pipe-70, it will enter the auxiliary ;inlet chamber 20, and assuming that the lief valve 38 of which is closed. As the water accumulates in the pressure chamber 29,

it will act upon the outer face of the diaphragm 25, which is of much larger area than the flushing valve, and will move the flushing valve toward its closed position, gradually closing the flushing orifice 6, and

at the same time forcing the throttling sleeve 60 into the auxiliary water chamber 85 j i prefer to provide the innerextremity of the 20. The action of this throttling sleeve tends to prevent the free access of water fromthe auxiliary inlet chamber to the main inlet chamber 15, and cause it to be transferred more rapidly through the [transfer tube to the pressure chamber, and as the flushing valve approaches its closed a position, the outlet aperture 24 in the side wall of thetransfer tube will be uncovered, as will be seen by reference to Fig. 2, there by permitting a more rapid transfer of water to the back pressure chamber 29, and

, causing the last portionof the closing move-' -mentto be effected more rapidl and firmly than the earlier portion of the c osing movement, and insuring the tight closing of the valve. This effect is produced by the combinedaction of the throttling sleeve on the 7 one hand, and on the other, the uncovering of the discharge aperture 24 of the transfer tube by the gradual inward movement of therflushingl valve. As soon as the flushing valve closed, all communication between the water inlet chamber and the bowl is 25 to flow in through themain into the auxiliary inlet chamber 20, and thence into the prevented." The'water, however, continues main inlet chamber 1-5,and thence by pipe 17 into the tank 18, where it accumulates,

compressing air in the tank until the pressure of the air becomes equal to the pressure per square inch of the water in the main pipe communicating therewith. There 1s, 'therefore, accumulated in the tank, a

' 1 large volume of water communicating with i, valve establishes communication between the back pressure chamber 29 and the flushing outlet chamber 10, which is of large diameter, and immediately reduces the pressure 7 1n the back, pressure chamber, so thatthe accumulated pressure in the tank and main,

and in the main and auxiliary waterinlet chambers,--act1ng on the rear face of'the flushing valve, causes the flushing valve to open to its full extent, and expel the water in the back pressure chamber quickly The accumulated water intheitank 18 thus flows through the n ne 17 and main inlet chamber 15," and through the flushing outlet (3 and flushing chamber 10 to the bowl, effecting a thorough, rapid, and powerful'flushin'g of the bowl with the water accumulated in the tank, As this flushing action reduces the pressure opposed to the water in the inlet pipe 70 or main,'water immediately commences to fiowthrough the mam into the' V auxiliary inlet chambenthe partstheir ing in the position'indicated in Fig-the;

incoming water joining in r the flushing =action, a portion; being transferred through the transfer tube 22, andseeping slowly-- through theiaperture 24 and between the "tube and the sleeve 44rintothe back pres sure chamber, the relief valve- 38 having. inv the mean time beenclosed by'releasing the a Pressure immediately begins to accumulate V in the back pressure chamber and the flush-v; ing valve begins to close. Thefiushingao:

push button orv other actuating means.

tion will take place rapidly until checked.

by the partial closing of the valve, after which the valve will close more slowly,per-

mitting a portion ofthe; incoming water to I trickle through the outlet 6 to the bowl;

to effect what is termed the after-lill,.and insure the bowl and water seal receiving the necessary amount of water after the flush ing action, and the. closing action of the valve Will continue slowly as the pressure builds up in the pressure chamber 29, until the valve 42 is almost seated, at which time the outlet aperture 24 of the transfer tube.

will be uncovered and permit it to transfer more ,rapid'ly'into the pressure chamber to insure the final seating of the valve. Ashe fore stated, the throttling tube cooperates in effecting the transfer of water from the auxiliary Water inletchamber 2O toithe'back- The effect'of' the iun-- pressure chamber.

covering of the outlet aperture 24- of the."

transfer tube before the'valve is completely seated, 'efl'ects the quick and positive final closing of the'valve, and obviates the hiss-- .ing noise frequently made in thefinal throt-- .tling action of a valve in closing off the supplyof water. As soon as the flushing valve has closed water immediately accumulates in the tank 18 from which it has been partially or wholly withdrawn by the flushing action, depending upon the duration of flushing, which may be "controlled 'with' great accuracy and precision, by adjusting the throttling sleeve 60 in the manner be-- fore described, and the-parts return to'nor-z mal position indicated in Fig. 2 and remain 'in this. position until the valve mechanismis again operated. It will be seen that thehydrau ic means independent of the operator, and therefore cannot be injuredor interfered wlth by the operator, who can only actuate the relief valve of the pressure chamber.

flushino valve itself is operated entirely by It frequently happens in the use of fiushing valves in which a closed tank is employed, that a considerable portion'of the air compressed in the tanks is gradually ab- 9 sorbed in the water, so that if the tank is not completely emptiedateach flushing operation, the amount'of air in the tank becomes vreduced until there is no longer sufiicient air present to perform the function of air cushion on-the upper surfaceof the water.-

In such case, it is desirable 'to lcompletely emptythe tank and allow the tank to fill 'withair in order to restore the parts to their original condition and efficiency.) To this p "pair of pliers or. other suitable evice 1n end-the auxiliarfylcut off valve 71 performs an important notion. By closing this valve and shutting off communication with the inlet pipe 70 andwater main, and-then actuatingthe relief valve 38 of the back pressure chamber, the flushing action will V 'va li' e mechanism, the combination with a tak e place as heretofore described, and

as no Water, is permitted to enter the; valve mechanism, the auxiliary out offval've.

' 71 being closed, no water will accumulate auxiliary cut off valve 71 is opened and thefj incoming water will close thefiushing valve within the back pressure chamber-to effect the closing of the flushing valve, hence" all :"the waterfwill run out OfythG tank, establishing a free communication cwith the atmosphere through the I bowl, and permitting the tank '18to-refill with air, after which the and refill the tank' until the air therein is compressed, so as to balance the water presinlet, and closely surrounding said stationary sure in the main, as'before described. i

fer tube- 22, and is further throttled at the exit of the auxiliary: waterfinlet'fchamber' during a portion of the closing movement of the valve, insuresthat even under conditions of small volume; and low pressure p of "the water supply, :suiiici'ent incoming :waterwill be transferred to the back pres-- sure chamber at all times,and under all cirl cumstances, to secure the accurate and efli-' cient closing of the flushing valve after theflushing operation, and the accumulation of the supply of water for the next flushing operation in the tank, mustnecessarily folfer tube 22 hereinbefore described, itwill be understood that there is formed an annular passage of very smallar'ea between the ex-' te'riorofthe tube and the interior of the]: sleeve 44, and the throttling sleeve through which small quantities of water may pass,"

low, My improved. valve mechanism can" therefore be installed and efficiently op-' erated in any ordinary dwelling house or other building or location; no matter how: small the volume of the water supply thereto 4 I may be.

While I prefer to employ the hollow transowing to the'looseness of fit, and in some 111- stances I may employ in place 'of the trans-' fertube' 22, a solid pin 22f-as shown in Fig.

10, and depend upon theannular-passage be-- tween theinterior of the'pin and the interior.

I of the sleeves Mandi 60 to transfer the necessary waterto the pressure chamber. I "p're-y fer, however, to employ the transferftube constructedand operating as hereinbefore described. I also prefer in either case to slightly reduce the outer end of the transfer tube or the pin asthe case maybe, to provide a portion 22? of smaller diameterrthan' the-pinor tube which can be gras ed by a 1. In a hydr'ulically operated flushing valvebody provided-with a water inlet, a

tank aperture, a flushing discharge aperture, fa flushing valve interposed between the 1 tank aperture and dischar e aperture, a pressure chamber for closing t e valveandholding valve being provided with an aperture "extending therethrough, and a stationary partsecured to the valvebody and extending loosely through said aperture, of a water inlet chamber, of small diameter within the valve body, communicating with said i water part, and having a discharge aperture adjacentf to the flushing valve in communication with the" tank aperture, and a l 95 throttling'devicecarried by said valve, and partially closing the discharge aperture of water inlet chamber to the pressure chamber. 2. In a hydraulically operatedflushing 'valve mechanism, the combination with a valve body provided with a water inlet, a

tank aperture, a flushing dischargeaperture, a fiushingvalve interposed between the tank "aperture and discharge aperture, a pressure chamber for closingthe valve and holding it normally 'in' closed position, a relief valve for said pressure chamber, 7 said flushing :valve being provided with an aperture extending therethrough, and a stationary part secured to the valve body and extending loosely through said aperture, of a water inlet chamber'of small diameter within the valve body, communicating with said water inletpand closely surrounding said station- 'ary' part, and havinga dischargeaperture .a l acent' to" the flushing valve in communi- "cation with thetank aperture, and a'throt- -tling device carried by said valve,; and partially closing the discharge aperture of said vwater inlet chamber when the "flushing valve is in'closed position, to facilitate thetrans-v nfer, of a portion'of the 'water from the'water inlet-chamber to the'pres'sure chamber, and means for adjusting said throttling device with respectto the" flushing valve, to vary its position, with respect to: the inlet chamber,

ing it normally in closed position, arelief valve for said pressure chamber, said fiush-' .qin-itswside wall,- opening into the pressure ,chamberwhenlthe valve is in closed position,

causeiitsthrottling.action {torcommence yatan earlier-nor later'stage in the closing .;movement of the flushing valve.

.3.. In; a, hydraulically operated flushing .-v alve.:body provided with awater inlet, a

-. tank -aperture,,a flushingdischarge aperture,

1-. a flushing valve interposed betweenthe tank .1:-.1aperture and discharge aperture, a .pressure "chamber for closing the valve; and holding it normally in closedposition, and'a relief valve forj said pressure chamber, said flushtransfer tube extending through said aper- -..,.ture in .the'fiushing valve, and being pro- .vided with a discharge aperture in its side gwall-Within said pressure chamber, adapted :ztOtbQ coveredby the wall of said aperture -municating with the water ,inlet, surroundtherewith, and 7, having a discharge aperture, 25,

adjacent to the, flushing valve, in communication with the tank aperture, and, av throtttli'ngadevice; carried by said flushing valve,

:Yalve; mechanism,qthe combinationwith a" and partially closing the discharge aperture f of thewater inlet chamber, to facilitate the vrinto thepressure chamber. I

transfer-of water throughsaid transfer tube .4. In a hydraulically operated flushing 'valveibody provided with a water inlet, a

1- aflushing valve interposed between the tank ..-2ing valve, being provided with a sleeve eX-- Valve for said pressure chamber, said flush- -;tending.therethrough, ofa stationary transfer tube secured to'the valve body extending v n-icating with theater inlet, surrounding said transfer tube,- and communicating therewthrough said sleeveinto the pressure chamber, and provided with a discharge aperture rand; adapted to be, coveredpby. said sleeve .when the flushing valve is in openposition, flan inlet chamber of small diameter commu- 51Wlth,vftlld having a discharge aperture adjacenttosaid flushing valve, in communication. l with the; tank. aperture andconcentric with j .s Bfild, transfer tube and sleeve, and a tubular throttling device carriedbv said sleeve, and Y I adaptedltopartially close the saiddischarge .passage :of, water from the inlet chamber to 1 ,z-apertureof said inlet chamber when the :valve is in; closed. position, to facilitate ,the

:zthe pressure chamber.

valve body provided with a water inlet, a

valve mechanism, the combinationwitha :I'

.Whenthe flushing valve is in open position, a

.water ,inlet chamber of small diameter comtank aperture, a flushing. discharge aperture,

aperture and discharge aperture, a; Pressure chamber for closingthe valve andholdingit normally vin; closed .position, and a frelief .lvalve'. for saidpressme chamber, saidflush- I dug valve being provided Wllillfi sleeve .ex-j tending therethrough, of a stationarytransfer tubesecured tot-he valve; body extending through. said sleeve into. the. pressure :chamin its side wall, opening into. the pressure chamber when the valve. is in closed position,

"therewith, and having a=discharge aperture adjacent'to said. flushing valve, in communibe'r,: and'provided with-a discharge aperture and adapted to be covered by said sleeve when'the' flushing valve is:in;op'.en positiomf 80 cationwwithrthe tank'aperturean'd concentric v I with :said transfer tube .an d. sleeve,-;and a tu- -ing,,,s.aid transfer tube, and, communicating.

bular throttling device carried by said. sleeve, and adjustable longitudinally with'r'espect.

thereto, to varyqthee stage in' the .closing' movement; ,of the valve at whichits'throttling action 'shalltake place. i

6; .In a hydraulically operated flushing A pressure chamber, alvalveconnectedtosa-id diaphragm; and normallyengaging sai'dseat,

'and'a relief valve for; said pressure chamdiameter within-.thejmain' inlet chamber, a

'ber,go f angauxiliarvrinletchamberzofgsmall water-inlet connected therewith, said aijlxaperture adjacent tothe flushing valve, iconi- ,municating with the main-inlet chamber, a)

transfer tube secured :to the valve body, eon

centrica-lly with. the auxiliaryinlet chamber," i communicating-5 therewith, and 1 extending lthrough an. aperture in the flushi'nge valve,

and having a discharge aperture, communi eating, with, the. pressure chamber; and V athrottling device carried by the? flushing valve, and partially closing" the ,;dis charge uiliary inlet chamber havingatdischflge ,aperture-of"saidauxiliary inletychamber when the flushing valve is in; closedj posia hydraulicallyoperated flushing valve, the combination with a; val-velb'ody;

providedwith a main .waterinlet chamber 7 having a"tankg out1et,- .aqfiushing chamber i' having a flushing outlet,:-' a partition separating said chambers and. provided with a v p flushing aperturehavi'nga.valveseat,apresj 5 In a. hydraulcally perated flushing...

i.;-yalve mechanism,1 the combination with a 'said seat, anda relief valve for said pressure chamber, of an auxiliary inlet chamber of smalldiameter within the main inlet chamber, a water inlet connected therewith, said auxiliary inlet chamber having a discharge aperture adjacent to the flushing valve,

communicating with the main inlet chamber,

a transfer tube secured to the. valve body concentrically with the auxiliary inlet cham-, 'ber, communicating therewith, .and extending through an aperture in the flushing valve, and having a'discharge aperture, in its side wall within the pressure chamber, adapted to becovered when the flushing valve is in open position, and an adjustable I throttling sleeve carried by said flushing valve, arranged concentrically with the transfer tube, and the discharge apertureof said auxiliary, inlet chamber, and partially closing said discharge aperture when the valve is in closed position.

8. In a hydraulically operated flushing valve mechanism of the kind described, the

combination with a valve body provided with a tank aperture, of relatively large area, a flushing discharge aperture of correspondingly large area, a normally closed" fiushing valve interposed between the .tank aperture/and flushing aperture, a pressure chamber for closing the .fiushing'valve and maintaining it in closed position, and a relief valve for said pressurechamber, of a.

stationary part extending loosely through an aperture in said fiushlng valve, "a water 111- let chamber of small diameter, surroundlng said stationary part, and having a discharge aperture of relatively small area, communicating'with the tank aperture. to facilitate area, a flushing discharge aperture of correspondlngly large area, a normally closed flushlng valve interposed between the tank aperture and flushing aperture, a pressure,

chamber for closing the flushing valve and maintainingit in closed position, and a relief valve' for said pressure'chamber, of a stationary part extending loosely through an aperture in said flushing valve, aiwater inlet chamber of small diameter surrounding said stationary part, and havinga discharge aperture of relatively small area,

communicating with the tank aperture, to

facilitate the transfer of water to the pressure chamber, and means for throttling the discharge aperture of said inlet chamber, to

further facilitate the transfer of water to p the pressure chamber.

10. In hydraulically operated flushing valve mechanism "of the kind described, the combination with a valve body provided with a tank aperture of relativelylarge area, a flushingdischargeaperture of correspondingly large area, a normally closed flushing valve interposed between the tank apertureand flushing aperture, a pressure chamber for closing the flushing valve and maintaining it in closed position, and a relief valve for. said pressure chambenof a stationary art extendin loosel throu h an a oerture b y a: l

in said flushing valve, a water inlet chamber of small diameter surroundlng said stationary part, and having a discharge aperture of relatively small area communicating. with thetank aperture, to facilitate thetransfer r of water to the pressure chamber, and adjustable means for throttling the discharge aperture of said inlet chamber.

In testimony whereof Iaffix my signature. 7 V PHILIP HA-AS. V Witnesses: i i

' L. E. FELDMAN, MJ KULENS..

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