US1878001A - Flush valve - Google Patents

Description

. modification.

Patented Sept. 20, 1932 "FLUSH VALVEl Application Aprl,

This invention relates to fiushvalves [and has for its object rto provide anew and improved valve of this description.

The invention has as a.- further object tol provide' a flush ,valve withfa new andim-V proved byspass construction. y

The invention has 'as a furtherobjecttov,

provide a flush valve having exterior means for regulating the valve." f .v y y The invention has as' a' further object to provide a flush `valve whichshallv be reliable and accurate iny operation and can be easily constructed and assembled.

The invention has other objects which' are more particularly pointed out in theflacco'm-` panying description. Y Referring, now, to the drawing, Fig. 1 is a sectional vview showing one form' of 'valve embodying the invention'.

'Figa 2 is a sectionalfviewI .2-2oi:`li`i,g.1.\y q' l Fig. 3 is a sectional view showing a modif ed construction. Fig. 4 is aI sectionalview showinga further taken on line Fig. 5 is asectional view-showing'a further modification. v f

vLike numerals refer to like partsthroughout the several figures. Referring,now. tothe drawing z;

v I have shown a flush valve having a. casing v 1 with a removable end vpiece 2. This casing is provided with an` admission opening 3- and a dischargeopening 4. The admission opening is connected with the source of water supply and the discharge opening leads to the point of use of the water. y Ajvalve seat 4a is locatcdin the casing. A valve member z5 co-operates with this valve seat and controls the flow of water through the casing. A pislton 6 is connected with the valve member 5 and divides the casing into twol chambers'?.

and 8. The valve is controlled bv varying the 7 relative pressure in the chambers 7 and 8.

IVater passes from` the chamber 7 to the chamber 8 toequalize the pressure in the two chambers through a bv pass or passageway lending from the chamber rto the' chamber Q Tn :the construction shown ,this passageway has a laterally extending portion 9 and a] vation of the valve.

v purpose.

portion 10 atan :angle thereto..v The portionv l i927.l serial Masami. v

l has anlenlarged section 11containing al i control member 12 and being provided witha contracted. outlet j 13.l The control member 12 isarr'anged `with la portion 14 which projects into the outlet 13 and beyond the face 55 of the vpiston 6 when the control'member is in its closed position. The control member has aclosingface 15 which engages aiseat 16 so as ,to` shut off the main flow ofwater through fthe by pass. Means is provided forI 50, permitting asmall iiow ofkwater bfrom cham," ber 7 into chamber 8 lwhen the controlling member is closed. i

In the construction shown", this means consists of one or more `channels or' gr0ovesf17 65 on the closing face 15 of the control member. The control member 12 vis normally held against its seat by a spring, or the 1ike,12a

4 which surrounds the reduced portion of said control member; VThis reduced portionprojectsinto the passageway 10 but'has a smaller cross'sectional area lthanv said passageway soY that water may liow through the passageway. Means is provided forpermitting Water to escape fromthe chamber 8 to secure the op'er- .75

l A suitably controlled i escape passageway may provided forthis `In the particular construction illustrated, this escape passagewayl is provided withan g()` enlarged portion `18 with a plurality of branches 19 leading therefrom through" the piston 6 to they chamber Sand an escape opening 20 leading tothe discharge opening 4. An'escape valve 21 is located in the enlarged 85 .portion 1 8 and normally rests yupon a' seat V22 so as to close the escape passageway;

Some means is'provided for operating the escape valve. In the construction shown, this `valve is operated by meansof a handle 23 9o which 'is operatively connected escape valve in any suitable'way.

In the vparticular v4construction shown, the escape valve is provided with a projectin' portion 24. A control1in`g'part125 is arrang 95 toengage the projectin'gportion 24, when the handle 23 is moved s o as to move the escape valve 21 to open the escape passageway. The controlling part 25 is slidably mounted1 inl a removable' piece 26and has an enlarged end 10Q with the 27 which engages the end 28 of the handle, and is normally held in its inoperative position by the spring 29. When the handle 23 is Amoved in any direction, the controlling piece 25 is thrust forward so as to engage the projecting'part124 and move the escape valve 21 to'open the escape passageway. Illien the handle Ais releasedythe spring 29 inovesthe handle and the controlling rpiece 25 to their initial positions. The escape-valve 21 will return to its initial position. If desired, however, a closingrv device such as the spring 30 mayy be provided.y In order to facilitate the assembling of the parts, the valve member 5 is made separatefrom the piston, the piston being provided with a projecting part in which the enlarged .portionV` 18ct the. escape passageway is formed and intov which the escape valve 21is received.

The valve member 5 i connection as shown in Fig. 1; order to provide easy means for inserting the controlling member 12 in position, the piston GV is provided with a removable portion 6a and the packingpiece 6b, for the piston, is:

- adjusting device 31 connected with the casing which is shown asan adjusting screw. This adjusting device is arranged to bev projected moreor less beyond the ace32 of the casing and'is provided with a notch 33 oran adjustj ing tool to vfacilitate its adjustment. This chamber 8 and'permit a greater flow of Watery adjustingdevice engages the top of the piston 6 .and limits its 'upwardmovement It will be seen that as the portion of the adjusting device which projects beyond the face of the casing, is lengthened, the vdistance through which the piston moves will beshortened. This reduces the amount of water discharged fromthe valve in two ways, namely, by reducing the opening .producedv by thevalve member 5 and by shortening tlieltinie the` valve member 5 is open.

move the control member to engagethe passageway leading fromV they chamber 7 to the so as to insure against obstruction of the passageway. The adjusting device 31 is provided with a gro-ove 34 at its lower end so that it does not interfere With the How of the s attached to the hol'-V .low projection on the piston, by a threaded It will be seen that bymea'nsof this device, 'y A. anydesiredfadjustment vmay `be iseei'ired.` In a the construction illustrated, the adjusting dej vice 31 is located so that it will engage the y portion' 14 of the control member 12 'so as to -move the adjusting device. In order to move the adjustingr device, theplug must be removed.

.In Fig. `3, I have shown a modied construction where the vcontrol member l2?) is hollow and isyheld against its seat by the flow ofthe water in chamber 7.

In Fig. 4 I have shown a further modilication where the control member 12al is a float, that is, a device which, when the water enters the chamber inl which it is located, will, by itsbuoyancy be moved to Vits closed position. f

Fig. 5 is affnrthermodilicationshowing the control member 12J as a hollow receptacle acting as afloat which is, by its buoyancy movedto its closed position confining the flow of the water'to the by-passld.

The use and operation of my invention are as follows When the valve is in use, the partis, when the valve is not'being operated, are as shown in Fig.-1. When it is desired to operate the valve, the handle 23 is-rinoved. This moves the controlling piece 25 andthe projecting part 24 and the escape valve 2l. VAWater is novi1 permitted to escape from the chamber 8 through the escape passageway'l, 19 and 20 through the open escapey valve 21. This releases the pressure in the chamber 8 and the pressure of the water in chamber A7l moves the piston 6 so as to move the'valve member 5 from its seatzand permit Water to pass from the source of supply through the discharge 4 to the point of use.` k; 'j

When the piston moves up yto its upward limit, the adjusting device 31 engages the end 14 of the control member '12 and movesv said control member to` its open position, that is, so as to separate the faces 15 and 16. When the handle 23 is relieved, the escape valve 21 returns to its closed position so as to cut o` the escape of the water from the chamber 8. Water now j passes from chamber 9 up through thefby pass and 'past the control member 12 into the chamber 8 equalizing the pressure in the two chambers and causing the piston V6 tok be movedbaek-to its initial posi-- `Whenthe piston moves suiciently to disl engage the adjusting device 31 from the end i es be'noted that when the valve is operated and the piston moved to its upward limit, the control member 12 in the by pass, is moved sof *that the seating parts are separated' and an enlarged opening provided through which lVhenit is desiredlo reduce the amount of' water discharged from the flush valve, at

l each operation, the adj ustiiig device 3l is adj usted to project farther beyond theA face 32 of the casing. opening of the valve'member and shortens the length of time it is open thus'reduciiig 910 the quantity of water discharged. v/Vhen itv is desired to increase the amount of water discharged at each operation of the iiuslivalve,

the adjusting device 31 is movedso as to de` crease the length projecting beyond the face Z5' 32. This increases the maximum opening of the valve member 5 and also increases the time during which the valve member 5 is open, thus increasing the amount of water discharged by the valve at each operation.

It will further be noted that the by pass is in tliefmoving piston and is at the center of the iiow of water so that it is in the swift current of water flowing through the valve and the discharge of any foreign matter from the "5 by-pass is assured. The by-pass may be secured by flattening one of the associated parts *softhat there will be a space between the two parts to permit the flow of the desired amount of water. i

I claim: y

valve member controlling the passageway therethrough, a piston in said casing con nected with said valve' member, 4said piston $5 dividing the casing into two chambers and having a passageway therethrough which con-k from said passageway for relieving the pressure in the chamber above said piston when.,

it isdesired to actuate the valve member.

2,. A flush valve comprising a casing, a

"59 valve member adapted to control the passageway through said casing, a piston in said casing connected with said valve member and dividing the casing into two chambers, said piston havingl a passageway therethrough.

connecting said chambers, a control member This reduces the maximum' 1. A flush valve comprising a casing, `a-

'when it is desired to actuate the'valve mem- :for controlling said passageway, means for actuating said control member to enlarge said passageway each time the valve is operated, and means separate from said passageway for relieving the pressure in the chamber above said piston when it is desired to actuate the valve member. f

3. A flush valve comprising a` casing, a

valve member adapted to control the passageway through said casing, a piston in said casing connected with-said valve member anddividiiig the casing into two chambers, said piston having a A passageway therethrough connecting said chambers, an automatic control member for' controlling said passageway,

means for actuating said control member to enlarge said passageway each time the valve is operated, anadjusting device'for varying the distance through which thepiston moves at each operation of the valve, and means separate l'irom said passageway for relieving the*l v pressure in the chamber above said piston when it is desired to actuate the valve member.

4. A lflush valve comprising a casing, a valve member for controlling the passageway through said casing, a piston in said casing connected with said valve member, said piston dividing the casing into an lupper and a lower chamber, said piston being provided with a passageway therethrough which connects-the two chambers, means responsive `to the movement of said piston for enlarging said-passageway for' a predetermined period each time the valve is operated` and means separate from said passageway for relieving the pressure in the chamber above said piston when it is desired to actuate the valve member.

5. A flush valve comprsing a casing, a valve member for controlling the passageway through said casing, a piston in said casing connected with said valve member, said piston dividing the casing into an upper and a lower chamber, said piston being provided with a passageway therethrough which connects the two chambers, means responsive to the move; ment of said piston for enlarging said passageway for a predetermined period each time the valve is operated, means for varying the \,d.'stance through which the pistonmoves at each operation of the valve, and means separate from said passageway for relieving the pressure in the chamber above said piston ber. r

6. A flush valve comprising a casing,-

valve member for controlling the passageway through the casing, a piston connected with said valve member and dividing the casing intoan upper and a lower chamber, said pisiis permitting water` to .flow from the lower chamber to the upper chamber, a control member in said pasageway inacessible from-,the exterior of the casing, means responsive to the movement of said piston for moving said control member to enlarge said second passageway for a predetermined period each time the valve is operated` and means separate from said passageway for relieving the pressure in the chamber above said piston when lit is desired to actuate th'e valve member.

' 7. A flush valve comprising a casing, a piston in said casing dividing it into an upper and a lower chamber, a valve member connected .with` said piston, a seat with which said valve member co-operates, a discharge device beyond said seat, said piston being provided with two passageways, one connecting the upper and lower chambers, 'the other connecting the upper chamber with said discharge device, and an automatic control'member in said first mentioned passageway. y

S. Atlush valve comprising a casing, a piston in said casing dividing it into an upper anda lower chamber, a valve member connected. with said piston, a seat with which said valve member co-operates, a discharge device beyond saidseat, said piston being provided with two passageways, one connecting the upper and lower chambers, the other connecting the upper chamber with said discharge device, an automatic control-member id irst lmentioned passageway, and a in said second passageway controlled mithe. exterior of the casing. 9. A flush valve comprising a casing having an inlet, a piston in said casing dividing it into two chambers one of which communicates with said inlet, a valve member connected with said piston, a valve seat with which said member co-operates, said piston beingprovided with a passageway connecting the two chambers, having an enlargement intermediate its ends, au automatic control member located in said enlargement, an engaging part which engages said control member and actuates it in'lopposition to the water pressure after the said valve member has been moved from its seat. said pist-on being provided with a removable part which holds said control member against removal.

10. A Hush valve comprising a casing, having an inlet and an outlet, a piston in said casing dividing it into two chambers, a main valve member connected with said piston, a valve seat with which said main valve member co-operates, a passageway extending throughsaid piston connecting one of said chambers with said outlet, a tilting valve controlling said passageway said passageway beingnormally open at all points except where the tilting valve closes it and an actuating mechapism or-tilting said valve to open said passageway the passageway extending through said piston and which connects one of said chambers with the outlet being located above the tilting valve, and a bypass having a portion extending centrally through said piston and above said tilting valve.

l1. A flush valve comprising a casing, having an inlet and an outlet, a piston in said casing dividing it into two chambers, a main valve member connected with said piston, a valve seat with which said main valve member co-operates, a passageway extending through said piston connecting one of said chambers with said outlet., a tilting valve below said piston controlling said-passageway said passageway being normally open at all points except where the tilting valve closes it `and an actuating mechanism for tilting said valve to open said passageway, a spring located above said tilting valve, for returning the tilting valve to its closed position, a bypass connecting the two chambers in the casing, said bypass centrally located with relation to the piston and in vertical alignment with said tilting valve. y e

Signed at Chicago, county of Cook and State of Illinois, this seventh day of 'April WILLIAM E. SLOAN.

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