Патент USA US2405639код для вставки
13, 1946. E. w. N. BOOQSEY " 2,405,539 VACUUM BREAKER ‘ Filed Feb. 19; 1944‘ V - INVENTOR. [DA/659D. M A/. aQos-zr BY ’ ‘ ., Patented Aug. 13, 1946 ) " " ‘ ”- ‘ UNITED . STATES PATENT 2,405,639 OFFICE ' 2,405,639 VACUUM BREAKER Edward W. N. Boosey, Detroit, Mich. Application February 19, 1944, Serial No. 523,110 . . _ r _ (Cl. 137—69) 3 Claims. 1 . 2 . . in Fig. 1, of less width and greater length than the diameter of the ball. ‘The opposite side of the regulator body has an aperture l2 of a diam This invention relates to a vacuum breaker for use in the water supply system of a building in > eluding a container in which water may be con ' taminated as for instance through the washing , eter slightly less than the diameter of the ball of articles therein. The purpose of the invention is to provide means automatically functioning to permit ?ow and additional apertures l3 and M on opposite sides thereof, the purpose of which is hereinafter described; The said valve body 3 has a threaded terminal conduit portion l5, which may be of any desired ' of air from atmosphere to the water supply con duit in the event of a less than atmospheric pres sure condition occurring in the supply conduit 10 length and functions as an extension of the con duit 2, on which is threaded a chambered mem water from a container into the supply system ber It having a series of apertures ll adjacent under in?uence of the reduced pressure condition its larger upper end and above the lower end of " thereby preventing withdrawal of contaminated ' in the supply system. . the threaded terminal portion l5. ' In many instances in homes, hospitals, or other 15 ‘ buildings in which various types of articles re - The said conduit portion l5 adjacent its upper end is provided with a transverse wall having quire to be cleaned, water is supplied thereto apertures l8 therein and a central internally through a conduit opening to the container below threaded aperture to receive the threaded upper the liquid level therein and a less than atmos end of a tube l9 centrally disposed in the body pheric pressure condition in the supply conduit and terminating at its lower end at or adjacent tends to draw impure water from the container to the lower end of the body or casing Hi. The into the supply line and thus contaminate water said lower end of the body I6 is threaded to receive in the supply system as is hereinafter more fully the threaded end of the discharge conduit 20 described. leading to a container, not here shown. The tube A structure embodying my invention is shown 25 [9 has a series of vertically spaced apertures 2| in the accompanying drawing in which therein preferably arranged spirally about the Fig. 1 is a vertical section showing the pre tube as indicated. ferred form of my improved automatic relief valve. ' - I Under the described arrangement of parts and with the valve member 4 in the position shown, r Fig. 2 is a cross section of the regulator mech anism taken on line 2—2 of Fig. 1. 30 a pressure condition less than atmospheric pres— ' sure in the conduit l tends to draw air through Fig. 3 is a cross section taken on line 3-3 of Fig. 1- ‘ In the preferred form of the invention shown in Fig. 1 the Water supply conduit is indicated ‘ at l to which my improved vacuum relief valve is connected by the threaded hub 2 of the valve body 3. The regulator mechanism is indicated generally at 4 and includes a cylindrical body provided with a rectangular projecting end por tion 5 which may be rotated by the nut-like ele ment 6 having a rectangular recess in its inner end in which the end 5 of the valve is positioned. The element 6 is also provided with a squared the ports I‘! and thence through the apertures l8 and thence through the slot I I in the regulator. If the reduced pressure condition in the supply conduit is su?iciently great, the ball 10 is moved to close the aperture l2. Under such condition however air continues to pass through the aper tures I3 and M to the supply conduit. The pur pose of this arrangement is to gradually eliminate the detrimental eifect of a less than atmospheric pressure condition in the supply conduit. It is further to be observed that air may also pass through the apertures I‘! in the body mem ber l6 and thence through the apertures 2| to I end portion 1 by which it may be turned. Other 45 the interior of the tube l9. These apertures 2| means for rotation of the member 6 may be uti are preferably arranged in longitudinally spaced lized. relation and as the water level in the coned The valve body 3 is of a chambered form and has a recess on the side opposite the nut 6 to re ceive the rounded end 8 of the body of the regu lator which has an opening in its inner end as indicated by dotted lines 9 and through which the ball [0 may be introduced into the interior thereof. The regulator body has an elongated slot II in its lower side, in the position shown member I6 is lowered, an increasing number of ‘the apertures 21 are opened to ?ow of air. This arrangement for air ?ow, which includes the apertures l1, l8 and 2| arranged as herein before described, provides for an increase in volume of flow of air to the supply conduit as the water level in the body [6 decreases. The 55 introduction of air eliminates the detrimental 2,405,639 effect of a less than atmospheric pressure con pressure condition therein below atmospheric dition in the supply conduit. It is further preferable to provide an air de pressure, said tube having a series of apertures in its wall in spaced relation longitudinally there of providing for increase of ?ow of air into the tube as the water level decreases‘ in the body member. 2. A vacuum breaker positionable between ver ?ecting rib or ribs 22 in the body member 16 below the air inlet apertures H. The said rib or ribs provide an air de?ection means tending to direct the same to the passageway 23 to which the apertures I8 are open. tically spaced parts of a water supply conduit discharging to a container below the liquid level 10 therein, comprising a chamberedbody member having apertures therein adjacent its upper end aperture 2| is increased in volume‘ as the water providing for ingress of air from atmosphere to level in the chambered member i6 is lowered by the body member under in?uence of a less than reason of its ?ow by gravity to the container. jatmospheric pressure condition in the supply con It is also to be observed that the tube ['9 having By the arrangement of parts as described the air ?ow'into" the plunibing system"through'the the apertures 2| therein adapts the device for 15 duit, the supply‘ conduit extending into the body use with a closed container with which thefcon duit 20 may be connected’and wherein air~under pressure may accumulate. The arrangement pro vides for an escape of air from the-container without the necessity'of use of a separate relief 'valve as is'commoniy theipractice. It is also ‘pointed out that the ?lm of water on the exterior ‘of the tube l9 during discharge of water to either ‘an open or closed container'tends to‘prevent'dis charge ‘of water from-the interior ofvthe' tube;-_., ‘through the apertures‘ 2| and'also'tends to pre vent splashing which would ordinarily "occur "without the described arrangement which‘ pro vides ‘a’ ?lm of water‘from' the'apertures 23 around they exterior-of ‘the inlet end of the tube l9. Having thus fully described "my invention, its utility and mode'of operation, what I claim'and "desire to secure-by Letters Patent of the United States is: ' lmemberlto a point below the said apertures, an .openended‘tube supported in peripherally spaced relation with the" last named portion of the con iduitvand extending into said body member to a point adjacent the lower end thereof, the said tube having a series’ of apertures in its-wall in longitudinally spaced relation, thearrangement providing for now of air-into the‘ body-member and thence through the space between the con duit and the tube into the supply conduitunder in?uence of aless than atmospheric pressure con— dition therein the said apertures inthe tube pro viding for increased flow of air to the supply con duit as the water level decreases in the body member. --3; A vacuum breaker positionable between ver tically spaced parts of a‘water supply conduit having a terminal portion discharging to‘ acon tainer below the normal liquid level therein, com vl. A vacuum breaker I positionable between 35 prising a chambered body member vsupported be tween the spaced partsof; theeonduitand-hav ingiapertu-res thereinradjacent its upper end,- the vterminal ‘portion discharging'to- a containerbe conduit ‘terminating within’ the body member be “low the liquid'level therein,- cbih‘prising‘a cham =_‘spaced'parts ofawa'ter supply conduit having a bered body member having apertures adjacent ‘ its upper and providing ‘for flow of ‘air? thereinto' ‘and supported in spaced‘relation‘on'the conduit, v‘said’ ‘supply conduit “terminating *in‘isaid1 body "member below‘ the apertures" thereimian "open f ended‘ tube supported‘within said’ terminal-‘por low -the- upper 'end thereoi,~ an open endedtube supported within said- terminal - portion of I ‘the ‘conduit in- peripherally spaced relation therewith '- and providing for ?ow of- air- from atmosphere to *the supply conduit-under» in?uence'of a pressure condition therein below atmospheric pressure, the tion of ’ the i} conduit‘ vin"p‘e‘ripherally ' spacedi rela— a said tube having a series of- apertures therein in ‘’ tion‘ therewith‘ and ‘ providing‘ for; ‘flow i'iof ~' ‘air through the apertures and thence to‘ between the “terminal portion-v of the conduitiandtheitube, to "the" ‘supply conduit underlin'?u’en'ce- *of ‘reduced longitudinally spaced relation providing for ?ow ~-of air to- the supply‘ conduit. EDWARD w. N. BOOSEY.