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Патент USA US2116258

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May 3, 1938.
D. P. BARNARD, JR
2,116,258
FLusHING APPARATUS
Filed April 10, 1936
2 Sheets-Sheet l
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May 3, 1938.
D. P. BARNARD, .JR
2,1 16,258
FLUSHING APPARATUS
I
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Filed April 10.
1936
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2 Sheets-Sheet 2
@ttm/MA1.
Patented May 3, 1938
2,1%,258 ,
@_ A UNITED sTATes PArENT ermee
.,
2,116,258
FLUSHING APPARATUS
Daniel P. Barnard, Jr., Wilmington, Del., assigner
`to Joseph A. Vogel Company, Wilmington, Del.,
a corporation ofÍ Delaware
Application April 10, 1936,'Se1‘ial'No. 73,787
7 Claims.
This invention relates to flushing apparatus
forv Water closet and like systems employing a
, valve device controlling the flow of water >from
a supply pipe to a closed tank wherein the air is
f5“ compressed, and from thence to a hopper or bowl
for the flushing action.
The object, of my invention is to provide a novel
construction and arrangement of anti-Siphon
valve or device associated with the flush valve
in'such manner as to permit air to enter the flush
valve casing and tank during the operation of
the flush valve, while preventing exhaust of air,
Water or sewage from the ilush valve casing to
the exterior or to the water supply pipe, thus pre
15 venting either siphonage and4 pollution of the
water inthe water supply linetherefrom or wa
ter-logging in the water tank dueto dead air
or'lack of elastic air in sufficient quantity to
secure aproper flush action.
*26 . The present invention provides an improve-`
ment upon the structural organization for a
similar purpose disclosed in patent to Joseph A.
Vogel, No. 1,961,313, granted June 5, 1934, where
bythe ei‘liciency of the flushing apparatus is in
28
creased.V
,
,
.
Fig. 1 is a View in si'de elevation showing the
application of the invention to a Vogel type of
selfàñushing‘water closet having a conventional
30 arrangement of flush valve disposed above the
rear portion of the bowl.
.
Figs. 2 and Bare vertical front-to-rear sections
through the bowl and flush valve casing, show
ing the ilush valve in normal and flushing posi
tions, respectively.
»
Fig. 4 is an enlarged vertical longitudinal sec
tion through the anti-Siphon valve, showing ythe
valve member thereof in normally open position.
Fig. 5 is a view similar to Fig. 4 showing-the
40 valve member of the anti-Siphon valve in closed
position.
'
,
.
Fig. 6 is a cross-section through the anti-Siphon
valve taken on line 6-6 of Fig. '7.
‘
Fig. '7 is a horizontal section through the anti~
siphon valve.
with a water inlet connection 9 for attachment
to a water supply pipe Ill, is also provided with a
lateral port i I for connection with an air-tight or
closed pressure tank I2, and is further provided
with a port i3 in its bottom wall, which port
connects the valve chamber 6 with the upper
rear portion of the flush chamber 8. The dis
charge outlet 'l is of generally tubular form and
terminates at its lower end in a reduced guide
portion I 4. The casing 5 is suitably constructed
for fastening attachment to the bowl I to hold
it'in rigid connection therewith.`
Disposed vertically
the valve chamber I‘,
ilush chamber 8 and the discharge outlet ,'I', and
extending through port I3, is a vertically mov 15
able valve stem I5. At its upper end within
the top of the valve chamber 6 this stem carries
an inlet valve It controlling the admission of
water thereinto through the water supply con
nection 9, and carried also by the stern and dis 20
posed in the lower portion of the valve chamber
6 is a flush valve I’! which is movable with the
valve i5 and operates to open and close the
port I3. At its lowerV end'the valve stem is pro
vided with a threaded surface I8 and a retain
'
In the accompanying drawings,--
(Cl. 4--70)
«
.Referring now more particularly to the draw
ing'syl designates a closet bowl provided at its
upper rear portion with an extension 2 having
an opening 3 in its top and constructed to form
50 a passage 4 communicating with the bowl.’>
Disposed Vabove the bowl extension 2 is a valve
casing 5 formed with an upper flush valve cham
ber 6,' a lower depending ilush discharge outlet
‘I and an intermediate flush chamber 8. The
5.5. valve chamber E is provided at its upper end
ing nut I9, which nut I9 is movable in the guide
portion I4. A coiled spring ZI] surrounds the
lower end of the stem within the outlet 'l and
25
rests at its lower end upon a shoulder 2I at the
lower end of the outlet. At its upper end the 30
spring bears against a lock nut 22 adapted for
holding in adjusted position a contact nut 23.
The spring 2li normally holds the valve stem
elevated with the valve I6 in closed position and
the valve I‘I in open position, which position is
the cut oil” position of the valve member I6 and
the hush position of valve member Il, in which
positions of the valve members the admission of
water from pipe Il! to the flushing apparatus is
cutoff by valve Iß, while valve I'I is in` posi-` 40
tion to establish communication through port I3
between the valve and ilush chambers 6 and 8
and between the valve chamber 6 and the pres
sure tank I2. The valve stem is adapted to
be depressed against the resistance of the spring 45
2i), to reverse the positions of the valves I6 and
I'I, that is, to open valve I6 and close valve I l,
by means of a forked rocker arm 24 mounted
on a shaft which is in gear with an actuating rock
shaft 25 which is connected to the closet seat 26 50
so as to be actuated and controlled thereby. The
gearing connection between parts 24 and 25 may
be thesame or similar to that shown in Vogel
et al. Patent No. 1,695,621, dated December 18,
1928, and the parts of the flushing apparatus 55
2
2,116,258
thus far described may correspond generally to
the parts disclosed in said patent, or be- of any
other analogous or suitable construction.
With
this understanding it will be apparent that spring
2U while holding valve I6 closed and valve I1
open acts on the arm 24 through the gear con
nection between it and shaft 25 to hold the seat
2B in a somewhat elevated position above the
bowl, in which position the supply of water to
ll) the tank and bowl is cut oiî and the tank is
empty but in open communication with the valve
chamber 6 and iiush chamber 8. When the seat
26 is depressed the stem I5 is moved downward
to open valve I6 and close valve I1, thus clos
ing communication between the chambers 6 and
8 and opening communication between the sup
ply pipe l0 and the tank I2, so that a charge
ci water will flow into the tank and compress
the air therein. When the seat 26 issubse
quently released and elevated to normal position
by -spring 28, the valve I6 is returned to closed
position, thus cutting 01T the flow of water and
the valve I1 is opened for the discharge of the
water from the tank through the port I3 into
the flush chamber 8 and through the outlet 'I
from the flush chamber to the bowl for a flush
ing action.
The present invention has for its object to
provide an anti-Siphon, control or relief valve
for automatically supplying air to the chamber 8
and chamber E to break up any siphoning action
in said chambers, and thus prevent any backflow
of sewage from the bowl into the chambers and
possibly into the supply pipe `I B, and also to admit
air to the tank to automatically replenish the
supply of live or elastic air therein when needed
and to thereby maintain a proper quantity and
elasticity of the air in the tank to produce a
proper iiushing action in the bowl and to prevent
the tank from becoming water-logged. The in
vention further has for its object to provide an
anti-Siphon valve so arranged and constructed as
to' ensure a quick and positive closure of the anti
Siphon valve member during a flushing action so
'ci as to obviate liability of sticking of the valve and
to prevent any chattering or other movement of
the valve interfering with its proper function.
The means provided for these purposes com
prises an anti-Siphon valve, preferably of4 ball
type, and consisting of a casing 21 formed of an
inner end section 28, an outer end section 29
and an intermediate section 30 having a threaded
or other suitable connection with eachother.
The section 28 is provided with a reduced threaded
extension 3I for engagement with a threaded
opening in the valve casing 5, and the section 29
is provided with a vertical portion 32 projecting
above the level of the top of the casing 2l and
provided at its top with an annular series of air
inlet and discharge openings 33. This portion
32 is internally threaded at its upper end to
receive a closure plate 34 having a notch or re
cess 35 therein for the reception of a screw
driver or like tool whereby it may be conveniently
applied and removed when occasion requires.
The sections 28, 29 and 38 are provided respec
tively with coaxially arranged and alined pas
sages 38 and 31 and a suction and pressure port
38. The passage 36 and port 38 are in communi
cation with each other through a diametrically
enlarged expansion or surge chamber 39 disposed
between them and formed by recessed portions
of the opposed ends of the sections 28 and. 30,
while the passage 31 and port 38 are in communi
cation with each other through an interposed
valve chamber 4l) formed between the opposed
faces of the sections 29 and 3D. The walls of this
chamber 4D are suitably formed to provide seats
4I and 42 respectively for a ball valve 43 mov
ably mounted in said chamber 40. Formed in
the sections 28, 29 and 30 on opposite sides of the
aforesaid passages and parallel therewith are
by-pass relief channels or ducts 44, which open
at their outer ends through the outer endV of part
3I of section 30 and communicate at their outer 10
ends with the outer side of the valve chamber 48
in proximity to the valve seats 42. The passage
38, port 38 and the chamber 29 provide for the
flow of air between the valve casing 5 and the
inner side of the valve chamber 42 of the valve 15
casing 21, while the passage 21 and ducts 44
provide for the flow of air between the casing 5
and the atmosphere through the ports 33 in the
portion 32 of4 the casing section 29.
The casing 21 is disposed horizontally and con 20
nected with the rear portion of the casing 5 at a
level between the bowl and the connection II,
and between the port I3 of the casing 5 and its
outlet connection with the bowl, so that the valve
21 will be disposed in an inconspicuous position 26
and where it Will not interfere with the move
ments of the seat 26 and Will at the same time
be better protected against injury by Contact with
extraneous objects. Its location at this point is
further desirable because it communicates di 30
rectly with the rear portion of the chamber 8 at
a point where the valve member 43 will be sub
jected more reliably to the pressure of air under
pressure of the Water flowing through said cham
ber 8 and prevented from having a chattering 35
action as would be the case if it were located at a
high level so as to be influenced almost entirely
by air pressure in the chamber 8 less directly in
fluenced by the water pressure therein. The
valve member 43 is normally disposed in engage
ment with the seat 4I, that is to say, in open
49
position, establishing communication between the
atmosphere and the chamber 8 ofthe valve 5,
which position of the valve member 43 is main
tained at all times when a flushing action is-not
occurring, and when there is a partial vacuum
45
in the chamber 3 or said chamber contains air at
normal atmospheric pressure. The valve mem
ber 43 is movable to the closed position shown in
Fig. 5, in which it engages the seats 42, Whenever
a ñushing action is in _progress or an augmenta
tion of pressure otherwise occurs in the chamber 8
of valve casing 5, in which position said member
43 closes the relief ducts 44 and cuts off communi
cation with the chamber 8 and the atmosphere.
It will thus be understood that at any time
during or after a flushing action, a partial vacuum
or reduction of air pressure exists in the chamber
8 or in said chamber together with the chamber
6 and the tank I2, whereby a suction action is 60
instituted, air will be permitted to enter the valve
casing 5 through the relief ducts or channels 44,
thus relieving any reduction of pressure and
breaking up any siphoning action therein. The
breaking up of the reduction of pressure and any 65
siphoning action will prevent any back?low of
sewage from the bowl upwardly into the valve
chamber 5 in the event of stoppage from any
cause, and thus prevent any possibility of the
pollution of the water in the supply pipe. 'I‘he
valve 21 is arranged in a most effective position
on the casing 5 for this purpose and also in such
position as to further perform a relief action to
replenish the tank 8 with the proper supply of
live or elastic fresh air to take the place of dead
2,116,258
or inelastic air in the tank, which may occur
through depletionkof air supply or absorption
of air under certain conditions, and thus prevent
water-logging of the tank and its attendant ob
jections.
It will be understood of course that
the valve member 43 is movable outwardly against
theseat 4B to prevent the exhaust of air from
the chamber B as well as to prevent the discharge
of water of ` sewage through the valve 2l.
io
15
The
sectional vconstruction of the valve 21 herein dis
closed is of advantage in not only permitting con
venient and economical manufacture of the valve
but also in permitting‘assemblage of its parts
for use and disassemblage thereof for cleaning,
repairs or other purposes. 'I‘he function of the
expansion or surge chamber 39 is to afford a
surge relief action occurring during a ñushing
~action or possible back?low of sewage ‘into the
chamber 8, the air displaced from the chamber 8
20 by inflow of liquid therein being allowed to eX
pand and vent through the ducts 44 to prevent
a too violent outward movement and closing of the
valve member 43v and to establish a positive clos
ing pressure on its inner side, whereby any possi
25 ble "chattering or flutteringV of the valve interfer
ing with its closing function will be prevented
and whereby any tendency of the valve to stick
in open position will be overcome. The function
l of port \38` is to provide a `restricted port for
suction and pressure actions of the airin the ball
valve to ensure quick and positive opening and
closing movements of said valve.
3
tank, a flush valve casing having a valve chamber
and a flush chamber, the said valve chamber
having a water outlet connection with the tank
and a water inlet, and the said i‘lush chamber
having an outlet to the bowl and an inlet from
the valve chamber, a valve device in said casing
movable ín one direction to open communication
between the water‘inlet and the tank and to close
communication between the valve chamber and
ñush chamber and movable in a different direc- ` `
tion to close communication between the water
inlet and `tank and open communication between
the valve chamber and flush chamber, an anti
Siphon valve casing opening horizontally at one
end into the iiush valve casing at a level below
the level of said water inlet and between said
water inlet and said water outlet and in com
munication with the atmosphere at its opposite
end, ancla valve member in said anti-Siphon
valve casing normally open in the absence of flow 20
'
pressure in the flush valve casing to establish
communication between said flush valve casing
and the atmosphere and movable to a closed
position under the iniluence of either iiow pres
sure or back pressure in the flush valve casing to
cut off communication between the same` and the
atmosphere.
8. In a flushing apparatus, a bowl, a closed Y
tank, a flush valve casing having a valve cham
ber and a iiush chamber, said valve chamber
having a water inlet connection and a water out
and said iiush chamber having an inlet from the
nection with the drawings, the construction, mode
valve chamber and an outlet leading to the bowl,
valve` for the purpose. It is, of course, to be
to
let connection, the latter leading to the tank,
i From the foregoing description, taken in con
35 of’- operation and advantages of my anti-Siphon
valve will be readily understood without a further
and extended description, and it will be seen that
it provides a simple, reliable and efficient type of
C1,
a water inlet valve for opening and closing com
munication between the valve chamber and the
water inlet, a flush valve for opening and closing
communication between> the valve chamber and
tank and the flush chamber, means for simul
taneously operating said valves to causethe water 40
inlet valve. to open the water inlet for ñow of
water to the tank and to cause the flush valve
to close communication between the valve cham
struction to serve speciñcally diiïerent applica- ` ber and the flush chamber, or vice versa, an anti
siphon valve casing opening horizontally at one
45 tions, without departing from the spirit or sac
45
riñcing any of the advantages of the invention. end into the flush valve casing at a level below
said
water
inlet
and
between
said
water
inlet
Also it will be understood that, while the struc
tural organization herein described and claimed and said water outlet and in communication with
is preferred, changes in the form, construction the atmosphere at its opposite end, and a valve
40 understood‘that the anti-Siphon valve may be
used in connection with various types of flushing
apparatus of the general character disclosed, or
of similar character varying in details oi con
member in said anti-siphon valve casing normally
50 and arrangement of parts falling within the scope
of the appended claims may be made without open in the absence of ñow pressure in the flush
departing from the spirit of the invention as set , valve casing and the atmosphere and movable
to a closed position under the iniluence of either
forth therein.
flow pressure or low level back pressure in the
What I claim isz
ilush valve casing to cut oli communication be
55
l. In a closet flushing system, a flush valve
55
tween the same and the atmosphere.
casing having a water inlet and an outlet for
4. In a flushing apparatus, a bowl, a closed
communication respectively with a water supply
pipe and a bowl, a valve normally closing said
inlet, a valve normally open when the first-named
60 valve is closed and closed `when the ñrst-named
valve is open, an anti-Siphon valve casing open
ing horizontally at one end into the flush valve
casing at a level below the level of said water
inlet and between said water inlet and said water
65 outlet and in communication with the atmosphere
at its opposite end, and a valve member in said
Yanti-Siphon valve casing normally open in the ab
sence of ilow pressure in the flush valve casing
to establish communication between said flush
valve casing and the atmosphere and movable
to a Aclosed position under the iniluence of either
iiow pressure or back pressure in the flush valve
casing to cut ofi communication between the same
and the atmosphere.
2. In a flushing apparatus, a bowl, a closed
75
tank, a flush valve casing having a valve chamber
and a iiush chamber, said valve chamber having
a water inlet connection and a water outlet con
nection, the latter leading to the tank, and said
flush chamber having an inlet from the valve
chamber and an outlet leading to the bowl, a
water inlet valve for opening and closing com
munication between the valve chamber and the
water inlet, a flush valve for opening and closing
communication between the valve chamber and
tank and the flush chamber, means for simul
taneously operating said valves to cause the water
inlet valve to open the water inlet for flow of
70
water to the tank and to cause the flush valve
to close communication between the valve cham
ber and the flush chamber, or vice versa, an anti
Siphon valve casing communicating horizontal
ly with the ilush chamber at a level below said 75
4
2,116,258
water inlet and between the same and the water
outlet and having an air passage communicating
with the atmosphere, a surge chamber in com
munication with saidair passage and iiush cham
ber, a valve controlling the air passage, and a
suction and pressure port communicating with
the surge chamber for establishing suction and
pressure actions on said Valve in the absence and
presence of pressure in the iìush chamber to re
10 spectively shift said valve to open and closed po
sitions.
Y
5. In a ñushing apparatus, a bowl, a closed
tank, a flush valve casing having a valve cham
ber and a flush chamber, the said valve chamber
having a water outlet connection with the >tank
and a water inlet, and the said iiush chamber
having an outlet to the bowl and an inlet from
the valve chamber, a valve device in said casing
movable in one direction to open communication
between the water inlet and the tank and to
close communication between the valve chamber
and ilush chamber and movable in a different di
rection to close communication between the water
inlet and tank and open communication between
the valve chamber and flush chamber, an anti
siphon valve casing communicating horizontally
with the flush chamber of the flush Valve casing
below the level of the water inlet and between the
same and the water outlet and having an air pas
30 sage communicating with the atmosphere, a valve
controlling said passage, and asuction and pres
sure port for establishing suction and pressure ac
tions on said valve in the absence and presence
of pressure in the ilush chamber to respectively
shift said valve to open and close said air pas
sage.
6. In a flushing apparatus, a bowl, a closed
tank, a flush valve casing having a Valve cham
ber and a ñush chamber, said valve chamber
having a water inlet connection and a water out
let connection, the latter leading to the tank,
and said flush chamber having an inlet from the
valve chamber and an outlet leading to the bowl,
a water inlet Valve for opening and closing com
munication between the Valve chamber and the
water inlet, a flush Valve for opening and clos
ing communication between the valve chamber
and tank and the flush chamber, means for simul
taneously operating said valves to cause the water
inlet valve to open the water inlet for ñow of 10
water to the tank and to cause the flush valve
to close communication between the valve cham
ber and the iiush chamber,.or Vice versa, an anti
siphon Valve casing communicating horizontal
ly with the flush chamber at a level below the wa
ter inlet and between the same and the Water out
let and having an air passage communicating
with the atmosphere, a surge chamber in com
munication with said ñush chamber, a valve con
trolling the air passage, a by-pass connecting
the surge chamber with the air passage at a point
to be closed by closing movement of the valve,
and a suction and pressure port communicating
with the surge chamber for establishing suction
and pressure actions to move the Valve inwardly 25
to open connection between the air passage and
by-pass and to force the valve outwardly to close
connection between the air passage and by-pass.
7. In a flushing system closed to the atmos
phere, embodying a bowl, a tank and a valve for
admitting water to the tank and closing commu
nication between the tank and bowl or cutting
off the flow of water to the tank and allowing
water to flow therefrom lto the bowl, a valve op
erated by suction for admitting air to said system
on a reduction of pressure therein and operated
by pressure to cut off the supply of air to said
system upon an augmentation of pressure there
1n.
DANIEL P. BARNARD, JR.
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