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Патент USA US3083737

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April 2, 1963
Filed‘ Sept. 22, 1960
4 Sheets-Sheet 1
April 2, 1963
Filed Sept. 22, 1960
4 Sheets-Sheet 2
April 2, 1963
Filed. Sept. 22, 1960
4 Sheets-Shee‘l'. 3
April 2, 1963
Filed Sept. 22. 1960
4 Sheets-Sheet 4
Patented Apr. 2, 1953
Lyman E. Becker, 1M2 S. 33rd St., Milwaukee, Wis.
Filed Sept. 22, 1966, Ser. No. 57,659
5 Galms. (Cl. 137-52414)
My invention relates to flush valves, and more par
ticularly to a valve that is automatically controlled.
The device serves a purpose as described in my United
States Patent 2,947,323, and is primarily designed to con
trol the ?ushing of a toilet, urinal, or the like at prede
termined intervals, and is especially adaptable for use .
an outlet 12, and a cap portion 13, threadedly engaging
the valve body :it) at 14.
The cap 13 supports an inner housing section 15, with
an outwardly extending ?ange 16 for contact with a
pliable diaphragm l17, equipped with a by-pass port 17'.
Section 15 clamps this diaphragm 17 against the seat
118 at the upper edge of the valve housing lower section It).
Diaphragm 17 divides the valve housing into an upper
pressure chamber above the diaphragm, and a lower pres
sure chamber beneath the diaphragm. The water ad
mitted through port 17' is adapted, when the upper
chamber is ?lled, to force this diaphragm against its seat,
due to the greater area of the diaphragm being exposed
in public wash rooms.
to the pressure in the upper chamber.
it has long been desirable to provide an operator for
Centrally supported the diaphragm 17, is a valve 19
valves of the differential pressure type wherein the valve 15
provided with a depending stem 20, and guides 21 ex
is operated through operation of a pilot valve at prede
tending downward from the diaphragm v17 and adapted
termined intervals, say for example, at intervals of sev
to ?t within the outlet 12. The stem 20 is equipped with
eral minutes or more. This is especially true in ?ushing
a laterally disposed pin 22 engaging longitudinally dis
systems. Many flushing systems in use today use elabo
rate electrical systems. It has also long been considered 20 posed vertical slots ‘23, in a tubular member shown as
24, which telescopically encases the valve stem 20'.
desirable to use mechanical means for this operation.
The inlet '11 of the valve body ltl, is equipped with a
Some prior valve operators of this type have used the
by-pass 25, leading to the inlet side of a pressure cham
inlet pressure responsive systems to produce periodic
ber enclosure 26 provided with a cover 27, and attached
opening of the main valve. Some of the problems en
countered in connection wtih such mechanical operators 25 to the inner face of a vertical Wall of a housing 23' as
are found in the fact that use of the inlet pressure causes
by means of screws 29.
The cover 27, and the enclosure 26, support a dia
gradual movement of the pressure responsive system with
phragm 39 and are attached to one another by the rivets
the attendant result that the pressure responsive linkage
31 as shown. The cover 27 is equipped with a bearing
or system may produce a slight cracking of the pilot
valve, without positively opening the same. in diifer 30 32, shown extending outward therefrom, and the dia
phragm 30 is urged away from the cover and toward
ential pressure valves the slight craclring of the pilot or
the pressure from by-pass 25 by means of a conical
relief valve may result in only a slight movement of the
spring 33.
main valve away from its seat before the relief or pilot
The lower base of the housing 28, supports a hydraulic
valve is again closed, which, of course, results in clos
unit 34- in the form of a cylinder equipped with a piston
ing of the main valve without ever fully opening the
35, having a piston rod 36 extending outward and up
An operation of this sort may result in cracking
ward through a bearing 37. The piston 35 is urged down
of the relief valve and main valve at extremely short
ward by a conical spring shown as 33. The entire unit
time intervals which may be termed as “chattering” of
the main valve. Also in a system of this type it is dh‘ii 49 34 is shown attached to the bottom plate of the enclosure
23 ‘by means of the screws 39.
cult to insure a predetermined time interval between suc
A horizontal shaft 49, supported by hearing plates 41
cessive openings of the main valve.
Accordingly, a primary purpose of the present inven
tion is concerned with a periodic operating system for
are attached to the vertical side wall of the enclosure
the system producing full opening movement of the main
valve during each opening and closing cycle and at the
The diaphragm 30 in the enclosure 26 is attached to
a stem 47 slidably guided by the bearing 32, forming an
2%. This shaft 40, pivotally supports a rocker arm 42,
having outwardly and oppositely extending arm portions
di?erential pressure valves and which utilizes the pres
45 43 and 44, and an arm portion 45 extending at right
sure on the inlet side of the valve for the operation of
angle to the arm portions 43 and 44. Member 4-5 is
the system, the system being so designed and arranged
connected to the piston rod 36 by a link 46.
that so-called “cracking” of the pilot valve is impossible,
same time providing a pre-selected time interval between
integral part of the cover 27.
successive opening cycles of the system.
tension 48 pivotally connected therewith at 49, and held
Other and ‘further objects of my invention will become
more apparent as the description proceeds, when taken in
parallel with stem 47 by a resilient means shown as a
conjunction with the drawings, in which:
FlGURE l is a cross-sectional view of the valve and
its control mechanism, in a closed position.
FIGURE 2 is a similar view showing the water under
The stem 47 has an ex
spring 59, attached at 51 to the extension 48, and to the
shaft 49. The lower surface of the extension 43
is recessed at 52, and a roller 53 is rotatably mounted
on the upper end of the member 4'3 of the rocker arm
42, and contacts the lower surface of the extension 43,
and is held in engagement therewith by the tension of
pressure circulating through a by-pass and raising the hy
draulic piston in a cylinder against the spring pressure. 60 the spring 59.
The lower arm 44 of the rocker arm 42 has a link 54
FIGURE 3 is a similar view to those as shown in
pivotally attached at 55, and the link 54- is pivotally at
FEGURES l and 2, showing the piston in the hydraulic
tached at 56 to a pusher bar 57' slidably supported by a
cylinder released to permit the main valve to be opened
bearing 5% mounted on housing 59 which is attached to
due to a tilting and opening action of the pilot valve, and
IGURE 4 is a similar view as shown in FIGURE 3 65 the valve housing 1%}, by means of the threaded collar 64)‘.
An abutment 61 has a plunger stem 62, disposed with
with the main valve raised or open permitting the water
in the housing 59, and slidably supported at 63 by the
to ?ush the ?xture, and ready to return to th original
valve housing It}. Abutment ‘61 is biased outwardly to
position shown in FIGURE 1.
ward bar 57 by the tension of the spring 64 surrounding
Similar characters of reference indicate corresponding
elements throughout this speci?cation and the several 70 the stem 62.
The operation of the valve control is simple and posi~
drawings. Referring now to the same, the character t1i)
tive. In FIGURE 1 I show the water supply entering
shows a valve housing having an inlet 11 for the Water,
the valve body at the inlet 11, with the diaphragm 17 seal
ing the valve body at 18 and the pilot valve 19 in a
downward or closed position.
The water supply entering the housing 10 at the inlet
11, is permitted to enter the by-pass 25, leading to the
enclosure 26, and exerts pressure against the diaphragm
30 in the enclosure 26, as shown in FIGURE 2, forcing
the diaphragm 30 against the pressure of the spring 33,
pushing the arm 47 outward, and causing rotation of the
be such that it will hold the pilot valve on its seat, not
withstanding the upward force on the relief valve due to
the slight relative upward movement of the extension 24.
initial withdrawal of plunger 62. When the linkage
reaches the position of FIGURE 2, arm 42 starts its coun
terclockwise movement to eventually cause plunger 62
is relatively slow, thus producing a predetermined time .
The pressure on the inlet side of the main valve re
mains lower than maximum until the main valve is closed
upon its seat and at that time the pressure on the inlet
side of the main valve is su?icient to cause a gradual
pressure buildup in the chamber 26 to thereby produce
a repetitive cycle.
It should be noted that the operation of the system
operating linkage in a clockwise direction. This causes 10
to move inward, contact extension 24, tilt pilot valve
19 to the open position and open the main valve.
In operation it should be noted that, as shown in FIG
URE 1, the arrangement is such that pilot valve 79 isv
held closed on its seat and with the extension 24 resting
on plunger 62, thus preventing any slight cracking or
interval between successive ?ushings. After closing of
the main valve, some period of time is necessary in order
to produce the required pressure buildup in the chamber
26, which pressure buildup is opposed by the spring 38
and spring 33. Thus movement of the pressure respon
sive member 30 towards the right will be relatively slower
‘and this initial movement, rather than producing any
direct opening movement, simply allows withdrawal of
tilting of the pilot valve 19 until the operating linkage 20 the plunger 62. Opening movement can only commence
after the roller 53 moves out of engagement will the
is ready for opening cycle. As the pressure builds up in
shoulder 52a so as to allow movement of the linkage in
the pressure chamber of enclosure 26, the pressure respon
the valve opening direction. This opening’ movement of
sive member or diaphragm 30 is gradually moved slowly
the linkage is retarded by the hydraulic dashpot action of
towards the right, as in FIGURE 2, thereby producing
attendant movement of the link 48, which during a 25 the piston 35, so that this movement itself produces a
further time interval before the plunger 62 is extended
predetermined range of this movement is disposed at an
angle such that the recess 52 is held in contact with
far enough towards the extension 24 as to contact the
same and produce positive opening of the relief valve
the follower roller 53, thus producing movement of the
19. Dashpot 34 retards and slows movement both on
'arm 42 in a clockwise direction and against the bias the
spring 38 which opposes the outward movement of the 30 the withdrawal of plunger 62 and the return thereof.
Chattering of the system is prevented by virtue of
plunger 62. As plunger 62 moves outward, extension
preventing tilting of the relief valve until the buildup of
24 drops to the position of FIGURE 2. At the end of this
pressure in the chamber 26 has reached its maximum.
predetermined range of movement, as when the dia—
A number of Variables are possible with the system.
phragm 30 is disposed in the position of FIGURE 2, the
angle of the link 48 with respect to the link 43 is such 35 For example, the time interval’ between successive ?ush
ings can be regulated by regulating the speed of move
that the shoulder 52a moves out of contact thereby al
ment of the piston 35, according to well-known dashpot
lowing the roller 53 to roll along the lower surface of
regulating principles. Furthermore, the tension in the
the link. A number of forces cooperate to bring this
spring 33 may be made variable so as to vary the speed
about. In the ?rst place, the spring 38 is then under full
with which the diaphragm 30 moves fully to the right, as
compression, thereby asserting a maximum force tending
appears in FIGURE 2. The ?ow rate through by-pass
to move the arm 42 in a counterclockwise direction.
25 may also be varied to vary the time necessary to move
Also, at this point, the angular disposition of the link
diaphragm 30.
48 is such that the force holding the shoulder against
Whereas I have shown and described an operative form
the roller 53 (the bias of spring 50) is no longer suf
of the invention, it should be understood that this showing
?cient to hold this engagement.
and description thereof should be taken in an illustrative
’ Thus as the arm 42 moves counterclockwise under the
and diagrammatic sense only. There are many modi?ca
in?uence of spring 38 which has, of course, sufficient
tions in and to the invention which will fall within the
strength to overcome the force of spring 64, the result
scope and spirit thereof and which will be apparent to
is a slow movement of the plunger 62 inwardly towards
the extension 24, which has been allowed to descend due 50 those skilled in the art. The scope of the invention
should be limited only by the scope of the hereinafter
to the withdrawal of the plunger 62. As the counter
appended claims.
clockwise movement of arm 42 continues, the plunger
I claim:
62 contacts the stem extension 24 thereby tilting pilot
1. An operating system for valves of the type having a
valve 19and relieving the pressure in the upper cham
.main valve member dividing a valve operating space into
ber and allowing the pressure on the inlet side of the main
valve to raise the main valve away from the seat, as ap
pears in FIGURE 3.
Once the main valve commences movement away from
an inlet chamber and a second chamber opposed thereto
and having means for admitting pressure from the inlet
chamber to said second chamber whereby the pressure in
said second chamber may hold said valve closed upon
its seat, the pressure in the inlet chamber drops due to
a release of this pressure through the valve outlet. The 60 its seat, including an operating member adapted to un
seat a pilot valve for said ‘main valve so as to relieve the
drop in pressure is such as to allow the spring 33 to
pressure in the second chamber of the main valve and
return the pressure responsive member 30 to the position
‘allow opening of said main vallve, said operating member
of FIGURE 1, where the mechanism is reset for another
being mounted for movement toward and away from
cycle, the roller 53 then being in engagement with shoulder
52a of link '48.
65 pilot valve opening position, means for biasing said mem
ber away from pilot valve opening position, a linkage
When the main valve is raised away from its seat to
having an actuating stem associated with said operating
allow ?ushing of the valve, the extension 24 is disposed
member and adapted upon movement in one direction to
above the level of the plunger 62 and as the pressure
bleeding through the bleed opening 17' gradually ?lls the
cause movement of said operating member toward pilot
upper chamber 715 and produces the descent of the main 70 valve opening position, a pressure chamber adapted to be
valve member, the, extension 25 will come to rest upon
subjected to the pressure in the inlet chamber of said
the plunger 62, as appears in FIGURE 4, and thereby will
main valve and having a movable pressure responsive
be raised toward its upper position, as the main valve re
member therein adapted ‘for movement in one direction
sujmes its seat. It should be noted that the pressure in the
in response to a buildup of pressure in said chamber, said
upper chamber works against the pilot valve 19 and will 75 linkage being interconnected with said pressure responsive
member to cause movement of said stem away from pilot
valve opening position in response to a buildup of pres
sure, means biasing said actuating stem toward pilot valve
opening position, said linkage having a releasable connec
tion with said pressure responsive member constructed
and arranged so that movement of said pressure respon
sive member in said one direction produces movement of
movement of said plunger toward said extension and con
sequent operation of said relief valve to thereby open
the same and allow opening of said main valve.
3. The structure of claim 2 wherein said pressure re
sponsive means is rendered ineifective through opening
of said main valve and a consequent drop of pressure in
said inlet chamber, said opposing means being e?fective
to hold said plunger in its innermost position during clos
said actuating member opposite to the pilot valve open
ing of said main valve whereby said plunger is contacted
ing direction while, upon release of said connection, said
linkage produces reverse movement of ‘said actuating 10 by said extension during closing movement of said main
valve, thereby moving said extension to its uppermost
member under the bias or" said means and in the pilot
valve opening direction, and means retarding movement
4. The structure of claim 2 wherein said opposing
of the actuating member and said linkage.
means includes a linkage having a member mounted for
2. A valve operating system for valves of the di?er
ential pressure type having a movable valve member 15 contact with said plunger and resilient means biasing said
linkage and thereby said plunger toward said extension,
dividing a valve operating space into an inlet chamber
said means for thereafter making said opposing means
and a pressure relief chamber through action of a relief
elfective comprising a cam follower roller included in said
valve positioned in the main valve member and adapted
linkage adapted for following contact with a link inter
upon opening thereof to relieve pressure in said pressure
connected with said pressure responsive means, said link
relief chamber, the improvement comprising a depending
having a stepped abutment in contact with said follower
operating stem for said relief valve, said stem being
roller so as to produce movement of said roller and said
adapted upon tilting thereof to open said relief valve, said
linkage in a direction away from said plunger in response
stern having an ‘extension slidably mounted thereon for
to operation of said pressure responsive means, said link
movement between an upper position and a lower posi
tion, a plunger adapted for sliding movement toward and 25 being mounted for angular movement during a predeter
mined range of movement of said roller and after said
away from said extension, means biasing said plunger
predetermined range to allow said roller to move out of
away from said extension, said plunger being movable to
contact with said abutment and thereby allow reverse
a position beneath said extension so that said extension
‘movement of said linkage under the in?uence of said
rests thereon when said extension is at its upper position
and with the relief valve in closed position, outward 30 resilient means.
5. The structure of claim 2 characterized by and in
movement of said plunger away from said extension al
cluding a dashpot for retarding the speed of movement
lowing said extension to descend to its lower position
whereby it may be contacted by said plunger for tilting
of said stem and opening of said relief valve, means op
posing movement of said plunger away from said relief 35
valve, means responsive to the pressure on the inlet side
of said main valve for gradually overpowering said op
posing means and allowing withdrawal of said plunger
and consequent descent of said extension and means for
thereafter making said opposing means effective to cause 4
of said plunger.
References Cited in the ?le of this patent
Nelson- ______________ __ Nov. 13, 1945
Kain ________________ __. Jan. ‘1, 1952
Becker ______________ __ July 14, 1959
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