US2608412A

US2608412A - Antisiphon spout and spray fixture

Info

Publication number: US2608412A
Application number: US717036A
Authority: US
Inventors: Ralph E Bletcher; Clarence H Bentley; Ernest H Bucknell
Original assignee: Individual
Current assignee: HAZEL BLETCHER SKINNER; JAMES H BIETCHER; MARCIA BUCKNELL LISTON
Priority date: 1946-12-18
Filing date: 1946-12-18
Publication date: 1952-08-26
Anticipated expiration: 1969-08-26

Description

Allg 26, 1952 R. E. BLTCHER r-:r AL 2,608,412

` l ANTISIPHON SPQUT AND SPRAY FIXTURE Filed Dec. 18, 1946 vwcmtom Patented Aug. 26, 1952 UNITED sTATEs PATENT oFFicE,

ANTISIPHON SPOUT AND SPRAY FIXTURE ertson) Application December 18, 1946, Serial No. 717,036

13 Claims. 1 j'fhis invention relates to .pressure control ttngs and flow diverter valves for controlling flow of liquid to either of two outlets from the same ,source of supply. -This invention is directed to improvementsover the valve assemblies shown in the Bucknell and Bletcher Patents Nos, 2,172,345, granted September 12, 1939; and 2,314,071, granted March 16, 1943. The principal object of this invention is to prolvide an anti-Siphon spout and spray fixture, including a double-acting v`alve which is effective to direct flow` alternately through the spout andthe spray outlets under control of a valve onthe spray outlet and` also to provide anti- Siphon means to prevent backflow from either of the outlets, in the event that suction should occur in the supply line.

Another object is to provide a unitary valve assembly of this type, employing a tubular valve through either oftwo outlets, which assembly includes a tubular valve element and a ball check Valve" adapted to close the opening in the tubular check valve when the liquid is directedto either `of the outlets and to function as a check valve to prevent backow through the inlet, in the `event oi failure of pressure in the supply line.

, Other objects and advantages will appear hereinafter.`

In the drawings:

Figure 1 is a plan view, partly in section; showing the general arrangement of parts employed in connection with my invention;

Figure 2 is an elevation view, partly in section, Von an enlarged scale, of a portion of the apparatus shown in Figure 1; I

Figure 3 is a sectional view of a preferred form of valve assembly embodying my invention, the parte thereof being in position for a normal ilow through the spout;

Figure 4 is a view similar to Figure 3 of the parts in position for normal ow through the l spray nozzle; l

Figure 5 is a View similar to VFigures 3 and 4,

K showing the position of the parts, in the event that suction should occur in the supply line;

. l Figure 6 is an elevation, on an enlarged scale,

showing details of construction of certain of the v`stantiallyon the line 'I--Las shown in Figure 6.

Va counterbore 38.

In the drawings, the hot water `supply line I0 and the Coldwater supply line I| are each provided with a valve I2 and I3, respectively, controlled from the handles I4 and I5, extendingupwardly through the Wall of a supporting element im, which may be a sink or washbasin, or the like. Downstream from the valve I2 is a lateral pipe I5a, which is connectedwith the bore I6 in the cross-over fitting I1. Also connected to the bore I6 in the cross-over fitting I1 is a lateral pipe I8, which connects to the downstream side of the valve |3. The cross-over fitting I'I is carried at the lower end of the threaded tube I9 having a iiange 20 at its upper end. A central 'tubular element in the form of pipe 2| is threaded into the fitting in communication with the bore I6, `and it stands upwardly through the threaded tube I9 in coaxial relationship. l

An elbow 22, threaded into the lower end of the cross-over ntting I`| is connected to a flexible tube 23. leading to a spray xture 24, provided with a spray nozzle 25 and a, manually operable valve 26. The valve 26 is normally closed by the springv 21. The valve 26 may be opened by manually depressing the knob `28. A passageway 29, within the cross-over flttingUI'I, communicates with the elbow 22 and with the annulus 313 between the threaded pipe I9 and the tubular element 2 I. This'passageway 29 does not communicate with the bore I6 within the cross-over tting V A valve housing 3| is secured onthe flange 26 by any convenient means, such as threads 32. A guide 33 is provided with a central aperture 34 for reception of the tubular element 2|. .Ports 35 are provided in the guide 33 to establish `cornmunication from the annulus 30 to the chamber 36, formed within the valve housing 3|. A bore 31 within the valve housing 3| extends upwardly from the chamber 36 and terminates at Depending into the bore 31 is the lower end 39 of the housing spout4l'l. The lower end 39 oi the spout 4D is axially threaded, as shown at 4|, to receive corresponding internal threads in the cup 42, which slides into the upper end ofthe bore` 31. An annularshoulder 43. encircling theupper end of the Acup 42, is adapted to be received within the counter 'bore 38.` The swing spout-4U and cup 42 are Vvmaintained in positionlby the threaded Tgland 64, and the gland may be provided with a ccmpressible packing ring |55.` The bottom 44 ofthe cup 42 is provided with a central opening 45. Extending through this central opening 45 is a Vtubular valve element 4t. having a central passageway 4'I and aeoaeic 3 a downwardly facing truste-conical valve surface 4B.

The tubular valve element t5 the opening 55 and also through the central opening 45 in the upper end of the' cage 55. A

plurality of spaced lugs 5I are provided on thev upper end of the cage 55 Aior Contact with the I through the flange 55, within which the opening la is provided. Y

The cage 5t is provided with

concentric bores

55, 51 and 58, which are progressively smaller, in the order named. The bore 58 Vforms a sliding lit with the upper end of the tubular element 2i and a packing ring 59 may be provided to seul the joint rbetween the bore 58 and the Vextermil periphery of the tubular element 2l. A nonmetallic ball 56 is mounted within the bore 51 of the cage 55 and is moved into such position through the bore 53. The ball 55 passes inwardly throughthe bore 53, and is retained in place by the seal ring 59 which is placed in position after the ball 5D has been inserted. A packing ring 62 encircles the cage 55 to provide a Y.

sliding seal within the bore 31 in the housing 3 i.

In operation, liquid admitted through the laterals a or IB, or both, passes upwardly through the central tubular member 2| and into the interiorof the cage 55. The pressure of the stream issuing from the tubular element 2l causes the ball 65 to seat Within the anged portion 52 at the lower end of the tubular valve 45, thereby closing the opening 51. As shown in Figure 3,

the cage 55 is raised within the bore 31 and the f lugs 5I contact the bottom 44 of the cup 5.2. Liquid then Iiows from the tube 2! around the ball 55 upwardly through the windows 53 and around the tubular valve 45, through the opening The liquid then passes` upwardly and is discharged through the open-ended swing spout di?. rIhe above description of operation presumes that the spray valve at the end of the flexible line 23 remains closed. The cage 53, under such conditions, is raised by the liquid-pressure, because the total pressure of the liquid above the cage is less Ythan theV total pressure below itg.

A metering discharge 'port 531exte'nds through the wall of the cage 5i), one end terminating at the'shoulder 5|, adjacent the bore 51, and the other end communicating with the lower chamber 36 Within the tting 3l. When the spray valve 26, at the end of the flexible liney 23, is opened, a iiow of liquid passes from the interior ofthe cage 50, through the metering discharge port 53, and into the chamber 35, and downwardly through the annulus into the line 25. When the valve 26 is open, Ythe parts take the position shown in`Figure e, the cage being moved downwardlyV by pressure Within the bore 31 above the cage. YThe ball 50 closes the lower end of the tubular valve 55 to prevent flow through the passageway '41. The metering effect of the orice 63 in relation to the relatively free flow through hoseY 23 and valve 25 causes pressure above the cage to be ygreater than in chamn ber 35. The cage 50 appliesa downward force on the flange 52, at the lower end of the element d5, and thus pulls the valve surface d3 into seal'- ing contact with the valve seat 66, at the upper extends through ,K

4 end of the opening 45. The parts are proportioned so that the valve surface 4S engages the valve seat 65, before the lower end of the cage 5,5 strikes the guide 33. With the parts in the position shown in Figure 4, flow from the tubu- 1iar member 2'! passes into the bore 51 in the cage 55 and outwardly through the discharge passage 53, as stated. No now of liquid occurs into the swing spout 53, because the opening 45 is closed by the ball Sii. Upon closing of the valve 25 at the spray nozzle, the parts return to the position shown in Figure 3, so long as liquid is being supplied'through one or both of the laterals 15a and I3. V

In the event that suction should occur in the supply lines l0 lor il, when the Valves I2 and i3 are open, means are provided for preventing a backfiow into the tubular delivery pipe 2|. As shown in Figure 5, suction within the pipe reduces pressure within'tne cage 53, causing the ball 5B to seat on the upper end of the tube 21,'thereby closing off the supply'passageway, It is immaterial, therefore, whether the remote valve 25 is open or closed, since the ball 5o prevents backiiow from either the spout 45 or the spray line The valve E55 drops awayirom the hanged receiving cup 52, at the lower end of the valve l5 and, hence, opens the chamber Within the cage 5G to the'spout Il@ and to the atmosphere, through the opening Q1. The spray line 23 is also in open communication with the chamber Within the valve 53, by Way of theannulus 30, chamber 35, and discharge port 53. The principal danger to be guarded against'is backflow through the spray line 23; when the discharge e du.

nozzle 25 might be submerged, in'impure Water. Y

As illustrated in Figure 5, closing of the inlet pipe 2i, by the resilient balljmpevents backflow into the supply pipe of such impure or contaminated waterror other fluid. Should the seal between the ballet and the upper end of the pipe 2i be imperfect, any leakage would merely draw through the open-ended spout 45.

' An advantageous feature of our invention lies in the fact that upon unthreading ther gland 64, the entire operative valve assembly, including the cup valve 45, cagev 5 5, ball Si), and the resilient sealing rings 59, 52, and 55 may be Withdr-awn upwardly through the bore 31, as a unit, for inspection, repair or replacement.

Having fully described ourinvention it is to he understood that we do not Wish to be limited to the details herein set forth, but our invention of the full scope of the appended claims.V

We claim:

i. In a devicefor directingliquid from a single inlet through either one of two outlets, the cornbnation or a iioating Vvalve element associated with one of the outlets"andiclosingopposite to the direction of normal iiowthrough said outlet, Y

a passageway formed axiallythrough said element, means to move said element to closed'position including a movable member associated with said liquid inlet, valve means associatedl with the movable member and VadaptedY to close thejpassageway in thevalve element'in response to pressure from the liquid inlet, and actingv to seal off the inletV against backflow from the' other outlet in the event of negative pressure occurring in the inlet.` ,1'

2. Ina device'for directing lliquid from'a. single inlet through either one of two outlets, the combination of a floating valve elementi associated with one of the outlets'andxclosing oppositeV to the direction of normal flow through said outlet,

a passageway formed axially through said element, means to move said element to closed position including a cage associated with said liquid inlet, valve means in the cage adapted to close the passageway inthe valve element in response to pressure from the liquid inlet, and acting to seal oi the inlet against backflow from the other outlet in the event of negative pressure occurring in the inlet.

i 3. In a device for directing liquid from a single inlet through either one of two outlets, the combination of a valve housing, a floating valve element associated with the housing and one of the outlets, the valve element closing opposite to the direction of normal flow through said outlet, a

passageway formed axially through said element,

a bore in thehousing, a cage slidably mounted in the bore andadapted to move said element to closed position, means establishing communication between the inlet and the interior of the cage, a ball in the cage adapted to close the passageway in the valve element in response to pressure from the liquid inlet, said ball acting to seal off the inlet against backflow from the other outlet in the event of negative pressure occurring in the inlet.

4. In a device for controlling iiow of liquid from a single inlet to one of two outlets, the combination of a valve housing having a central bore, a cage slidably mounted in said bore, means establishing communication from the inlet tothe interior of the cage, valve means including a movable valve element adapted when closed to prevent ow through one of said outlets, said valve element being operatively connected to the cage whereby movement of the cage in the bore in one direction may close the valve means, said valve element having a central passageway axially therethrough, and a ball in the cage adapted to close the passageway under pressure of liquid in the cage.

5. In a device for controlling ow of liquid from a single inlet to one of two outlets, the combination of a valve h-ousing having a central bore, a cage slidably mounted in said bore, means establishing communication from the inlet to the interior of the cage, valve means including a movable valve element adapted when closed to prevent ow through one of said outlets, said valve element being operatively connected to the cage whereby movement of the cage in the bore in one direction may close the valve means, said valve element having a central passageway axially therethrough, a ball in the cage adapted to close the passageway under pressure of liquid in the cage, and a lateral discharge passage in the cage communicating from the interior thereof with the other outlet.

6. The sub-combination comprising a tubular cage, relatively small openings in opposed ends of the cage communicating with a relatively large chamber within the cage, a movable tubular valve element extending into one of said openings, the exposed end of said element having a valve head ythereon provided with a sealing face adapted to seat in a direction toward said cage, and the other end of said element being larger than the cage opening to prevent disassembly of the valve element and cage, an axial passageway through said valve element, and a movable element insertable into the chamber through the other open-ing adapted to seal 01T the axial passageway in the tubular valve element.

7. The sub-combination compri-sing a tubular cage, relatively small openings in opposed ends of the cage communicating with a relatively large chamber within the cage, `a stationary member having a centralaperture defining an upwardly facing valve seat, a movable vtubular valve element extending through said aperture and one of said openings, one end of said element having `a valve head with a downwardly facing sealing surface adapted to cooperate with said seat,ian axial passageway through said valve element, and a movable element insertable into the chamber through the other opening and movable upwardly to seal off the axial passageway in the tubular valve element.

w8. The sub-combination comprising a tubular cage, `relatively small openings in opposed ends of the cage communicating with a relatively large chamber within `the cage, a movable tubular valve element extending into one of said opening-s, the expo-sedend of said element having a valve head thereon provided with a sealing surface vfacing the cage, `and the other end of said element being larger than the opening to prevent disassemblyA of the valve element and cage, an axial passageway through said valve element, and a check valve insertable into the chamber through the other opening yadapted to seal off the axial passageway. i

9. In a device for controlling the direction of liquid iiow in a combination :Hx-ture having a liquid inlet and two liquid outlets, the combination of va bore in the fixture, a cage slidably received within the bore, a tubular valve element extending into one end of the c-age and having a passageway axially therethrough, a valve seat associated with the iixture adapted to cooperate with a valve tace on said element t-o prevent flow around the valve element to the first of the outlets, the liquid inlet including a stationary pipe extending into the other end of the cage in telescopic relation, a ball in the cage adapted to close off the passageway under pressure of liquid delivered through said inlet pipe, a chamber in the xture operatively connected to the second of said outlets, and a discharge port leading from ythe interior of the cage.

10. An anti-siphon valve assembly for-directing a liquid through one of two outlets from a single inlet, having in combination a movable valve member for controlling flow to the first outlet, a cage adapted to move the valve member to closed position, an inlet pipe telescopically received within the cage and extending into and with the interior of the cage, a discharge passage in the cage communicating with the interior thereof and with the second outlet, and a ball in the cage adapted to close the inlet pipe against reverse flow from said outlets.

l1. In a device for diverting liquid through one of two outlets from a single inlet, the combination of a valve housing having an axial bore, a stationary inlet pipe projecting axially into said bore, one of the outlets being in communication with one end of the bore and the other outlet being in communication with the annulus between the bore and the inlet pipe, a valve assembly within the housing including a member slidably mounted within said bore, said member having an opening receiving the inlet pipe in telescopic relation.

12. In a device for diverting liquid through one of two outletsfrom a single inlet, the combination of a valve housing having an axial bore, a stationary inlet pipe projecting axially into said bore, one of the outlets being in communication with one end of the bore and the other 7 outlet being in communication with the annulus between the bore and the inlet pipe. a cage slidably mounted in'said bore and having an axial opening receiving the [inlet pipe in telescopic relation, a stationary Valve seat associated with said housing and positioned in the path of flow to one of said outlets, a tubular valve element extending through and adapted to close on said seat in a direction opposed to the direction of flow to said outlet, an aXial opening through said valve element, interengaging means on the cage and valve element whereby axial movement of the cage within the bore may close the Valve, said means including a valve seat, a movable valve element in the cage adapted to contactv said Vseat to close said axial passageway under pressure of fluid from said inlet pipe, a lateral discharge passage communicating with the interior of the cage and with the said annulus, said element being adapted to prevent backow through the inlet pipe in the event suction should occur at the inlet. 1

13. In a device for diverting liquid through one of two outlets from a single inlet, the combination of a valve housing having an axial bore, a stationary inlet pipe projecting axially into said bore, one of the outlets being in communication with one end of the bore and the other outlet Vbeing in communication with the annulus between the Ybore and the inlet pipe, a cage slidably mounted in said bore and having an axial opening receiving the inlet pipe in telescopic relation, the cage having a lateral opening establishing communication from the interior of the cage toV said annulus, said lateral opening being sufficien-tly small so that flow` from the inlet pipe to said second outlet causes a pressure drop from the 'interiorof the cage tovsaid annulus, packing means on the cage engaging the axial bore in sealing relation, the cage having ports extending through the wail thereof on the opposite side of said packing means from said annulus whereby a pressure dierential is established Vacross said packing means for Amoving the cage within said bore, and cooperating valve elements on the cage and housing for interrupting communication between the Vinlet 'pipe and the iirst of said outlets upon movement of the cage under said 'pressure dii'er'e'ntial. Y

YRALPH E. BLETCHER.

CLARENCE H. BENTLEY.

ERNEST II. BUCKN'ELL.

REFERENCES CITED The ollewing references are of record in the file of this patent.:

UNITED STATES PATENTS Number Name Date 1,091,980 Steinberg Mar. 31, 1911i '1,726,102 Forman Aug. 27, 1929 1,999,514 McLean Mar. 7, 1933 A1,955,495 Hack Apr. 17, 1934. 2,002,630 Eckhouse May 28, 1935 2,172,345 Bucknell Sept. 12, 1939 2,324,690 Gardiner July 20, 1943 2,387,906 ABuchanan Oct. 16, 1945