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Патент USA US3090976

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May 28, 1963
3,090,966
w. e. GOULD
FLUSH TANK SIPHON
Filed March 13, 1961
William 6. Gould
INVENTOR.
,
BY and
.
19%”,
Unis Srts
_
3,090,966
Patented May 28, 1963
1
2
3,090,966
opening {formed therein with the movable portion of the
flush tank siphon shown in an upper position; and,
FLUSH TANK SIPHON
William G. Gould, 419 Howard St., San Angelo, Tex.
Filed Mar. 13, 1961, Ser. No. 95,251
3 Claims. (Cl. 4-50)
This invention relates to new and useful improvements
in means for emptying the ?ush tank of a toilet and more
FIGURE 3 is an enlarged vertical sectional view sim
ilar to that of FIGURE 2 but showing the movable por
tion of the siphon in a lower position.
'
Referring now more speci?cally to the drawing the
numeral 10 generally designates a conventional type of
?ush tank which includes a removable top 12 and a bot
tom wall 14. A plurality of side walls 16 extend upward
particularly to a ?ush tank siphon of simpli?ed design
speci?cally adapted to provide a means whereby the ?ush 10 1y from the peripheral edge of the bottom wall 14 and
tank of a toilet may be emptied by a siphoning process
and with a minimum amount of eifort.
terminate at their upper ends in a horizontal plane there
bv enablin: the top 12 to be positioned thereover.
An outlet opening 18 is formed in the bottom wall ‘14
and the siphon member of the instant invention is gen
There have in the past been many different methods de
vised for emptying toilet ?ush tanks and the most widely
used method involves a mechanism which is highly sus 15 erally designated by the reference numeral 20. The
siphon member includes a generally inverted U-shaped
ceptible to malfunctioning and oftentimes causes consid
conduit member 22 having a pair of upright leg portions
erable difficulty. The most widely used means for empty
generally referred to by the reference numerals 24 and
ing toilet ?ush tanks utilizes a stopper type plunger
26. ‘The leg portions 24 and 26 are communicated with
mounted in the ?ush tankfor vertical movement toward
and away from the outlet opening formed in the bottom 20 each other at their upper ends by means of a curved
bight portion generally referred to by the reference nu
of the flush tank. When the emptying means is actuated,
meral 28. The bight portion 28 may be constructed of
the stopper type plunger is raised to an upper position
any conventional rigid or semi-rigid material such as
whereupon the water within the ?ush tank ?ows outward
plastic and is provided with an upstanding lug portion 30
ly through the outlet opening formed therein. As the
which is suitably apertured as at 32.
water level in the tank lowers the buoyant stopper is also
:One end of a lever arm 34 is pivotally secured to the
lowered until the water level within the tank is lowered to
a point su?icient to again engage the stopper with the
lug portion 30 by means of pivot pin 36 and the other
outlet opening. However, the stopper is mounted for
end of the lever arm 34 is pivotally mounted to the rear
side wall 16 by means of pivot fastener 38. The ?ush
water rushing outwardly through the outlet opening of 30 tank 10 includes the conventional operating lever 40
which is secured to a pivotally mounted shaft 42 which
conventional ?ush tanks is quite often capable of effect
guided vertical movement in an inferior manner and the
ing sufficient turbulence to cause the stopper to be mis
has ‘a crank arm 44 ?xedly secured thereto in any con
aligned with the outlet opening thereby preventing the
Venient manner for rotation therewith. ‘It will be noted
that the shaft 42 may be journaled for rotation by having
its opposite end portions received through apertures (not
stopper from seating completely in the outlet opening.
It has long been realized that a siphoning apparatus
would constitute .the easiest method of draining water
from a ?ush tank but siphoning apparatuses used for this
purpose in the past have encountered di?iculty with the
shown) formed in the front and rear side walls 16 of
the tank 10. One end of a tension spring 46 may be se
cured to the lever arm 34 as at 48 ‘and the other end of
the tension spring 46 may ‘be secured to the to'p'12 in
It is therefore the main object of this invention to pro 40 any convenient manner or the read side wall 16. ‘Other
wise, the siphon member 29 may be provided with means
vide a ?ush tank siphon constructed in a manner where
for resiliently urging the bight portion 28 toward a raised
by a siphoning process may be readily initiated with a
position.
minimum amount of effort and in an effective and highly,
In this manner, it will be noted that the bight portion
dependable manner.
45 28 is mounted for vertical movement Within the ?ush
A further object of this invention, in accordance with
tank 10 and that the spring 46 normally urges the bight
the preceding object, is to provide a ?ush tank siphon con
portion 28 to an uppermost position. The leg portion
structed of a minimum number of parts.
7
24 includes a lower rigid tubular section generally re
Still another object of this invention is to provide a
flush tank siphon including means‘ for automatically dis 50 ferred to by the reference numeral 48 and an axially
compressible section 50. The upper end of the section
continuing the siphoning process and introducing air into
50 is secured about the corresponding lower end of-the
the siphoning apparatus after the water level in the ?ush
bight portion 28 in any convenient manner such ‘as by
tank has reached a predetermined lower level in order
adhesive material and the lower end of the section 50 is
that the siphoning process will be gradually interrupted
and the noise of the siphoning process being terminated 55 secured to the upper end of the lower rigid tubular sec;
means by which a siphoning action was started.
will be maintained at a minimum.
‘ A ?nal object to be speci?cally enumerated herein is
to provide a flush tank siphon which will conformkto
conventional forms of manufacture, be of simple con
tion 48 in a similar manner.
The lower rigid tubular
section extends through the outlet opening 18 and is
provided with an externally threaded intermediate por
tion 52 which has a pair of nuts 54 and 56 threadedly en
struction and easy to operate so as to provide a device 60 gaged therewith and disposed above and below the bot
that will be economically feasible, long lasting and rela
tively trouble free in operation.
Other objects, features and advantages will become
more readily apparent from the following description and
the accompanying drawing.
65
tom Wall 14 respectively. A pair of annular seals 58
and 60 are disposed between confronting surfaces of the
nuts 54 and 56 and the opposing surfaces of the bottom
wall 14, respectively, whereby the lower rigid tubular sec
tion 48 is secured to the bottom wall 14 in ?uid tigh
sealing engagement therewith. '
>
_
-_
FIGURE 1 is a perspective view of a conventional form
The leg portion 26 ‘includes a lower rigid tubing-sec
of toilet ?ush tank shown with the ?ush tank siphon of
tion generally referred to by the reference numeral 62
the instant invention mounted therein, parts of the ?ush
and an axially compressible section 64. The upper end
tank ‘being broken away and shown in section;
FIGURE 2 is an enlarged fragmentary vertical sectional 70 of the section 64 is secured to the corresponding end of
the light portion 28 in any convenient manner such as
view taken substantially upon a longitudinal plane pass
by adhesive and the lower end of the section .64, is se
ing through the center of the ?ush tank and the’ outlet
3,090,986
i
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3
4
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cured about the upper end of the lower rigid tubing
section 62.
It will be noted that the lower tubing section 62 has an
aperture 66 formed therein a spaced distance from the
lower end thereof and also that the lower end of the
section 62 includes a plurality of depending axially ex
shaped conduit member 22 may be constructed of one
piece. Still further, the sections 50 and 64 could have
coil springs or the like embeddedtherein. Thus, it will
be noted that various methods of resiliently urging the
bight portion 28 to an uppermost position could be used.
While jam nuts 54 and 56 together with the seals 58
tending and circumferentially spaced teeth 68. The
and 60 have been illustrated as a means for securing the
teeth 68 comprise abutment means on the lower end of
section 62 for engagement with the bottom wall 14 and
tubular section 48 through the outlet opening 18, it is to
be understood that any other suitable means may be used
to prevent the lower end of the section 62 from being 10
for this purpose.
disposed in sealing contacting relation with the bottom
Finally, the water level in the toilet bowl v(not shown)
may be raised after'?ushing by the provision of a small
diameter tube (not shown) leading from the water sup-’
wall 14._ The aperture 66 comprises means for discon
tinuing the siphoning process e?ected by the siphon
_
.
ply to the leg portion 24, whereby the ?ow of water from
descends to a predetermined lower level. In, operation, 15 the water supply into the ?ush tank 10 after flushing
' the siphon member 20 is secured within the ?ush tank
will also raise the water level in the toilet bowl to the
member 20 as the water level within the ?ush tank 10
10 as above set forth and water is allowed to enter the
desired level.
7
'
?ush tank 10 and rise to the high water level 70 by any
The foregoing is considered as illustrative only of the
conventionalmeans (not shown). .With the bight por
principles of the invention. Further, since numerous
tion 28 disposed in its upper position as illustrated in 20 modi?cations and changes will readily occur to those
FIGURE 2 of the drawings it will be noted that the high
water level is disposed below the upper portion of the
interior of the bight portion 28 thus preventing the water
skilled in the art, it is not desired to limit the invention
to the exact construction and operation shown and de- ,
scribed, and accordingly all suitable modi?cations and
from within the leg portion 26 from ?owing upwardly
equivalents may be resorted to, falling within the scope
and down through the leg portion 24. However, when 25 of the invention as claimed.
the lever 40 is actuated to cam the free end of the lever
What is claimed as new is as follows:
arm 34 downwardly, the bight portion 28 is lowered to
1. In combination with a ?ush tank of the type includ
the position illustrated in FIGURE 3 of the drawings
ing a bottom wall having an outlet opening formed there
whereupon a ?ow of Water through the siphon member
in and a high water level, a siphon member for siphoning
20 will be e?ected. The ?ow of water is almost imme 30 water from the interior of said tank outwardly of said
diately eifected and all air is removed from within the
outlet opening, said siphon member comprising a generally
siphon member 20 before the bight portion 28 is allowed
inverted U-shaped conduit member including a pair of
to return to its upper position illustrated in FIGURE 2
upright leg portions‘ communicated at their upper ends
of the drawings.
by means of a bight portion, one of said legs having means
As the water continues to ?ow through the siphon 35 on its lower end sealingly securing said one leg to said
bottom wall in said outlet opening, at least said one leg
member 20, the water level is lowered within the ?ush
tank 10 as the water is passed outwardly through the
including a resilient, axially compressible section, and
lower rigid tubing section 48 and into the toilet bowl (not
means mounting said bight portion in said tank for move
ment between an upper non-flushing position above said
shown) disposed beneath the tank 10. As the water level
is lowered to uncover the aperture 66 air is admitted into 40 high water level and a lower ?ushing position below said
the conduit member 22 thus discontinuing the siphoning
high water level, the other leg including a resilient axially
process. The aperture 66 is of a small diameter in
compressible section andbeing engageable with the bot
comparison to the diameter of the lower rigid tubing
tom wall ‘for compressing the second-named section, said
other leg further including circumferentially spaced and
section 62 and accordingly the sound of air being drawn
into. the conduit member 22 is greatly reduced affording 45 axially projecting abutment means on the lower end
thereof for engagement with said bottom wall to maintain
quiet operation of the siphoning member 20.
the lower end of said other leg a spaced distance above
Although the section 64 need not be axially com
pressible it the lower rigid tubing section 62 terminated
said bottom wall,,said other leg still further including
siphon discontinuing means a spaced distance above the
at its ‘lower end a greater distance from the bottom wall
a
14, in order to make it possible for a maximum amount 50 lower end thereof.
2. The combination of claim 1 wherein said siphon
of water within the flush tank 10 to be discharged
discontinuing means comprises an aperture formed in said
through the outlet opening 18, the leg portion 26, is of
other leg substantially smaller in diameter than‘the inside
a length su?icient to terminate at a point spaced slightly
above the bottom wall 14 when the bight portion 28 is
diameter of said leg.
in the uppermost position. Accordingly, if‘the leg por 55
3. In combination with a ?ush tank of the type includ
ing a bottom wall having an outlet opening formed there
in and a high water level, a siphon member -for siphoning
water from the interior of said tank outwardly of said
outlet opening, said siphon member comprising a gen
p 60 erally inverted U-shaped conduit member including 'a
tion 26 were not provided with the axially compressible
section 64, the close proximity of the lower, end of the
leg portion 26 with the bottom wall 14 would prevent
the bight portion from being lowered a distance su?icient
to be positioned below the high water level 70. .
i The teeth or ?ngers 68 ensure that water will be able
pair of upright leg portions communicated at their upper
ends by means of a bight portion, one of said legs having
means on its lower end sealingly securing said one leg
to said bottom wall in said outlet opening, at least said
most position placing the lower end of the leg portion 26
in engagement with the bottom wall 14. In this man-. 65 one leg including a resilient, axially compressible sec
tion, and means mounting said bight portion in said tank
ner, water may enter the section 62 between the ?ngers
for movement between an upper non-?ushing position
68 thus preventing immediate stoppage of water ?ow
to enter the lower end of the section 62 from the interior
‘of the tank 10 when the bight portion 28 is in its lower
above said high water level and a lower ?ushing position '
through the leg portion 26 as the bight portion 28 'is
below said high water level the other leg including a
moved to the lower position.
7
' 'If the vspring 46 is to be omitted the axially com 70 resilient axially compressible section and being engage
able with the bottom wall for compressing the second
named section, said mounting means including a vertically
swingable lever operable in the tank and having one end
sections 50 and 64 they may be made unitary with the
portion pivotally secured thereto and its other end ‘por
bight portion 28 in order that the entire inverted U 75 tion pivotally connected to said bight portion for sus
pressible sections 50 and 64 may be made of resilient
materials such as rubber or plastic. If resilient mate
rials such as rubber are used in the construction of the
3,090,966
6
pending the siphon member from said lever, a shaft
journaled in the tank and extending transversely across
the lever at an intermediate point and in vertically spaced
relation thereto, an arm on an intermediate portion of
the shaft cammingly engaged with the lever for swinging 5
same downwardly ‘for lowering the siphon member, a
spring connected to said other end portion of the lever for
swinging same upwardly, and an operating lever on one
end portion of the shaft.
References Cited in the ?le of this patent
UNITED STATES PATENTS
, 1,203,602
1,602,072
Fulton _______________ ___ Nov. 7, 1916
Gallagher _____________ __ Oct. 5, 1926
FOREIGN PATENTS
1, 1128 ,190
564,003
France _____________ __ Aug. 20, 1956
Belgium _____________ __ Feb. 15, 1958
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