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Патент USA US2405639

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13, 1946.
" 2,405,539
Filed Feb. 19; 1944‘
[DA/659D. M A/. aQos-zr
Patented Aug. 13, 1946
" " ‘ ”-
Edward W. N. Boosey, Detroit, Mich.
Application February 19, 1944, Serial No. 523,110
(Cl. 137—69)
3 Claims.
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
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
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
Under the described arrangement of parts and
with the valve member 4 in the position shown,
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
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
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
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
--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
longitudinally spaced relation providing for ?ow
~-of air to- the supply‘ conduit.
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