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Патент USA US2406259

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` Aug. 20, 1946.
Filed May 1o, `1945
Patented Aug. 20g 1946
¿ UNITE-u d_sf'rA'fil'ÍS PATENT
2,406,259y ~
Irving- H; Russ‘e11,~loak Park, and Frederick c.
'Bìnn'allg- River'-~-Forest, Ill.; assignors tov Sloan '
'y ' ¿ ValverCompa'ny, Chicago, Ill., »a corporation of`
" '
11. .,
in general_ to flush"
Í'l‘hi's invention relates Y
‘.and'h‘as'for itsobject to-.p'ro'vide a new and 'im'
‘proved'ltype lof ‘flush valve,' -particularly for use
the lower body> side for ther-aoco ' odationofï'the
operating‘handle ' 'I and its: associated elements,
>while the top vportion of the body is. closed bythe
"1in controlling the flow of water in waterclosets.
.metal cover 8 externally threaded thereon.
îfIt- is 'af primary object- of the invention ‘toïpr'o Ul
The circular body .portionl I vis'ïl'iollowe’dfout‘lió
»vide a 4ilush> valvewhich is relatively inex'pen‘
provide a chamber 9, within which- theorie-piece
‘siveandleconomical to manufacture,- _and which
piston I0 is slidably arranged. Pistonlll'ooiîtróls
readily accessible for inspection or replacement
f the 'flow of îwater through' the vchamber "f9"‘by
"A kfurther "object
` of _ the invention
-' is toy*Idesign
moving away from" »and- uponV the rubber'` valve
seat II in turn >arranged upon` a'shoulder' "I2f"at
'a' iiush valve which comprises 'relatively‘few and
simpleparts;y facilitating' ease of ïassembly,ïand
the bottom end of thel‘chamber 9;" Thé'piston
'I0' is' provided at "itslower end with'a cylindrical
`which parts are made of "materials precluding
‘restricted portion or refillhead`|3ïforméd~i1itègral
destructive corrosive 'action on the operating ele
.iments' normally'inïdirect contact `with the water
therewith which isv of such sizé‘and‘shape‘às'to
ñowing through the valve.
«f A'further 'object is to designa simpliñed
piece piston body for a flush valve together with
an improved by-pass and auxiliary valve therefor
îto'provide improved operationof the flush valve.
ÍfAnother object is` to design av ñush valve.4 and
-'a' non-metallic lining therefor, whereby improved
:accuracy andmore reliable operation of the 'pis
provide a, reñll supply of water Yfor'the water
> closet. ` A‘somewhat smaller restricted'p‘ortión
I3a, formed integrali with the refill lieadgïsî'iair
ranged immediatelybelow the hea'd‘I3 and serves
to control the rate'of now througnthe'iliish
At its upper end, the 'piston lI IlV is provided 'with
the usual rubber piston packing member I4 which
divides the chamberV 9 into an upper' and ‘lower
portion. The packing member I4 is clamped di
i, ’A further object‘is to provide improved sealing
rectly to the end of vthe'piston IIJ‘by'the -ñanged
and iholding' means'for a;y member lining'the in
portion ofthe cap I5, the shankof' which'is
rsidewall surface'of a-flush valve.
i ‘
threaded 'intoîthe inside wall Vsurface ofthe lpis
:1; With the above and other objects in View which
ton. An`auxi1iary valve member I6 *having-’a
`will appear Vas; the naturelV of ' the invention is
small diameter lower Vstern portion and alar'ger
~better funderstoodï, the’. same tconsists in ` theî‘im 30 head portion I'I on the’other end is` arranged
>proved ,construction and novel 'arrangements of
lto project through the axial opening'in the> bottom
ythe-parts of the -ilush valve, as will now be fully
end of' the piston" I0, and is providediwithZ a
tapered shank portion having‘the' larger lend
~described-:and particularly‘pointedA out in the
Vton 'over long yperiods of' time arev attained. ' `
¿claims hereto appended. ' '
mergingfintegr'al with'the head i I‘I't`o` provider're
The accompanying drawing illustrates a form
:of the invention in which:`
i " '
Fig. l is> >a vertical sectional‘view through a
. „'.Fig 3'is a’ plan View of `the piston’assembly of
vis adapted to forni good sealingengagement with
the rubber valve seat I8 resting- cna shoulder
inside the hollow piston I0;
- --Fig. 2 is a perspective view on-'a reduced‘scale
iof the tubular liner for the'valve chamber; ` "
The" underside of " the head I‘I'Tfis
»provided with a sharp abutmentas shown' which
preferred; form of the device' embodying the in
es CA inforcernent.
Fig.v 4 is a view on an enlarged scale of' aifrag
' ‘-`«
The rubber valve 'seat I8 hasi'a‘ metalrin'g’ïIB
vulcanized to it which serves'to maintain ’the
auxiliary'walve‘member properly centered upon
the valve seat and also assists in >guiding it'into
_ position. The upper surface of the auxiliary head
I'I is recessed to retain one end of the coil spring
¿ment-,ary portion yof thel valve assembly; *and
. Fig. 5 is a similar view showing a >modified con
20, which normally urges the auxiliary valve >`I6
'against the rubber valve> seat I8 and'assis'ts in
As illustrated, the device comprises a cylindri
restoring ‘it to the seat. VThe other' end -of -the
cal- metal body portion `or `casing ‘designated’ by
spring 20 -is expanded over the lower end of a pro'
¿the referenceA characterA I which is provided with 50 jection or abutment 2IV which is _formed _at the
y-a threaded water-»inlet opening 2 at one side
junction point of a number of cross members '22
lthereof ‘and anoutlet or dischargeopeningß at
also formed integral with the 'cap I5 and which
¿the bottom endto which the tailpiece A4 .is cou'
serve as reinforcement members for the samegfnt
pledby means'of--the slip joint andcoupling nut
onefpoint of the side wall of the piston I 0`~ a` small
¿5,- asishßwne; Anotherbpeningß isarranged in :55 »by-pass. opening ‘ Z3 Vis ‘provided` to permit =wàt`é`r
' 2,406,259
' rode and is not 'subject to chemical action by the
water. The lining 26 is slightly tapered with its
smaller diameter at the bottom end, as seen in
` . to pass' to the inside of the piston I into the upper
chamber of the valve. 'I'his by-pass opening 23
is arranged in a portion .of the side wall of the
piston where a slot 24 .has been cut so that theI
Fig. 2, whereby its insertion into .the body I (also
and there is less likelihood of the'by-pass be
tapered), is facilitated,- and a closer fit is pro
vided. At the lower end, the lining 26 has an
coming eleggedffjî4 ig'..3_= show§theby-pas`s 23
opening‘or notch 21 ell-tinto Yit. to? ñtf' over the
length of the by-pass opening 23 is relativelyY short 1
'inlet y opening Á2~-a`nd permit ingress Vofl `~the water
to the valve. VA small projecting lug'28 on the
wall of the piston is reduced tothe minimum`
thickness.V With this arrangement the recessed? 10i` upper edge of lining 26 fits into a small 'slotin the
`.body Wall I, as shown in Fig. l, and thereby pre
s10t724 'serves to protect and shield the by-.pass ’ 'vents axial rotation of the lining 26 to insure that
opening 23 to a certain extent and no additional'
parts are required to form thebyepass..íthesimple ¿rtheyslot 21 remainsv in alignment with the inlet
located at-«the mid-point ,of the-slot' 24v/here' v4the
drilled hole through the thinsiwall satisfactorilyv
:opening 2 at allëtimes.
serving for the purpose. Around fthe lower outer`
diameter of the piston I0 there is arranged anv
m-Atxthelupper lend of the .valve body I, the liner
annular guiding ledge 25 formedïintegral with'the` -
of..the rubber-¿4 gasket 29, clamped tightly down
piston body and which serves to guide the piston.`
over the vends bythe cover 8. To insure more ef
fective-sealing, the edge of the liner 26 is bev
26 and the body have their edges sealed by means
l in its `up and down movement in the char-uberv 9. - i I
It has been customary to construct the piston 20 eled as shown at 30 and a similar bevel is formed
.orrtheiinside edge of lthebody I.; :Thisfbeveling
.body Ill voffbrajss. or..otherz metal that Yrequired lthe
accurate. machining off. the - severalV elementsfcom
.enables thef rubber. gasketgrzßf to.: be «squeezed` orV
,prisingîpthe «pistoni andY whichwere secured; to~
forced; 'down- v~over 1 the;v lbeveledisectigms;y as:v ~indi
catedat 3|`v ini Figs, 4'sand-5.; ¿Thisgmethod =of
gethervbyqscrewing» the f parts: onto „onew another. '
This increasedfmanufacturing >cost of: 1the piston, 25 sealing f effectively»ipreventsrffleakage:: of @water
(which ' may. be11un~der afpressure r`upwards „ton :100
aszwell `as_reci'uired additional. time .consumed in
lbs; = per square 1 finch); v; fromf; -theï inside of „the
,assembling the Avarious elements.. . 'The piston~ -I I)
according to» the present linventionisv .constructed
Vstancesuch as: any ofthe WellA known plastic -mate- "
ond important function of this sealing methodis
that'it‘falso prevents tleakage vofV water-` passing
lrials noW' commercially;available `upon 'the ».mar
from ythe - lower endof the ‘linerß and-body, via v.the
oi‘»> a Singleipiece preferably ofi a: non-»metallic sub
adjoining' walls. thereof andinto. .the/,upper .cham
Vberorrftlre topside of thepistoniii. _::Should's‘uch
leakage. occur, the action of the' by-pass .23.'would
lare ideally suited :for .thezpurposeiof .making ¿pis- v
tons..y ‘Examples of ; suchm materials. suitable: for 35 be nulliñed- and'. the; valve@wouldÍ ,'.fail` .tof-operatel
"ketîl ,This plastic materialeither. thermo. setting
ornithermo, plastic,` exhibits characteristics' which
this.: purposezare. hutyrate, zpolystyrene, vinylite,
.phenolic'resimetc `When formed of -'plastic .ma
The iplastic lining.Í 2.6 .beingv a, ?relativelyV :thin
Walledv *semi-‘rigidi structure; .1 could _conceivably
terial, 3 the ¿piston . is Y‘cheaply :"Inade v‘into î a - single
become warpedf’or >be. ’benk-inward.` at;i-its‘t.=ends
,unitary lpart, is light in- weight and .has the-requi
site strength toV withstand the water pressures. 40 .when subjected tof-extremer orl adverse-'operating
conditions. .This is'. prevented at: :the Kupper end
encountered. The most-important- characteristic
isi.i_tsl non-.corrosive and'k ruste-proof qualitiesaas
ofthejliningeby ther'ubber gasket 2.9„being ñrmly
imbedded. in` the». beveled» i edge-` 30;; and-@holding
the lining-rigidly inplace;.cannotv bend; ¿.iAt
.accumulation of A `sedimenti as ‘encountered’v 'in ;
metal. parts.y .These ,desirable characteristics; irr ï l`its lower; end';.zthef.lining.;26; is:,forced‘.against a
shoulder 0rv .ledge 32<=formed ini the: body.;».| tad..`
l ¿surethat vth.eî«continually remain inf-'goodv
jacent ithe rubber fvalveffseat .l I. :This ¿shoulder
Í, ~ .free „operating = -conditioni '.reducin‘g: :maintenance
«well as its tendency ,to remain free -from‘the usual
,andiv’repair . and securing ; reliable functioning'. un’
32 is formed . atiy arr> angle. as.: more`.--clearlyâ=seen
in rFig. d;Y and serves'ato :prevent inwardswarping
derpall acl-verse .conditions to :which theïñushvalve
be subjected. :In-addition tothe-pistonbody;` It), 50 vor;.`rcurling of ithe': liner»v 26i at its ¿lower-z ends-îíïfBy
lthe' ¿capv piecev I 5 - andthe auxiliaryvalve- member
ñrmly; holding-.the .,liner.- in position in.v th'eßfore- .,
I6Y are also‘rformed >of plastic. ¿material and. ex.
-hibit similar characteristics.
going; s manner,V 'itv :cannot f become' . dislodgedz-r yor
-e _By .the ¿use ; of the «term ».“p‘lasticßgin ìthis speciñ- l
iary valve I6 receives a thrust to-iinitiate .itheïflush „
.cation and the‘',1it is not§intendedA
.valve operation.
that .any -speciñcf ¿type .of x:non-.rrxetallic ¿material ‘
begdeilned‘v as Adesirable but-only. :that theziexpres‘
-sionbe :utilized inl jaçgeneric. sense to include any
or all thermo-setting or .lthermoepla-sticrmaterials
shifted wheneverthe pistorrloperates or the auxil
A plunger 33 slidablyi arranged'` throughnthe
paclçing‘nutv 3A' and/.theebushinga 35 isîadapted to
vengage the lowerfaendA of the auxiliaryevalve? I6
to trip the same. This plunger 33 is actuated-«by
nowl~fcommercially available. and. which-:could be 00 .the operating .handle 11' andthe: complete". assem
bly is-'held'inlposítionon the body I-lbythe socket
readily formed into. the desired shapesvv and fulñll
thegqualities necessary in ilush valve operation.
3‘1 ~. threaded i onto ‘.the è opening « 6' 1' in :sth'e .-;body.
Spring 31 supplies the restoringvforceafor ¿the
So that the'piston lIII may function inl-av reliable
' manner, its piston` packing IllmusthaveV a -very
plungerì i3 3, . and" the.: îhandlel '1
. The ¿handle 1,
smoothgwall” surface for ity to.-.;s1~idefupon.-. ‘This 65 plunger 1 3 3,1 packing -. nutfv 34, Aand'v .bush-ing" l3 5a 'are
wall. surface 'must be --free »fromwanynmachine
marks,¿nicl;s or scratches',v so Íthat notfrictional
resistance is :encountered -to~ vhamper -_ ther-free
.movement of the piston, «Toy >providezsuclfi av
smooth sliding surfacefor the «piston packin‘g„a
eachmade of 'ai plastic material .inI order Ato 1in
sure continuous free and smoothV operationof
.the Apartszandfralso:f tor'prevent ï lcorrosion-:arid »fac
-curnulai'fio'n-Y of `"foreign,deposits; upon the> parts.
surface of; the valve vbodyv I; ‘This'liningmay take
I¿In .o-rìder.; to flimitxthestroke‘ of-»lîthef-piston and
ftherebyi» control: the »- volume of fwater: ¿passed?v by
_each1 operation' of .the flush! valve, ~
theform Vof a tubular; or, .cylindrical-member 26
which.; is i. made .off `plastic. »material to; »provide a 3
»bumpertpinî 38 is threade‘c‘t.through- theï-¿cove‘rf 8
`'and :is adapted to vbe engaged; by!y theabutm‘eritf 2 I>
«smoothf clean surfacethatrwill: notrrust» and=zcor5-
.in Àtheacapî lliV formed-«at #theî'junctionmïpoint-i of
special »lining »is arranged to cover .the„inside¿wall`
the cross-pieces 22. The bumper 38 also passes
through the packing and nut 39, and the thread.
flow to the desired rate of flow through the valve.
It will be noted that all of the working parts
ed opening in the cover 8 is closed by the small
of the valve and the elements they are asso
ciated with or come in contact with, Vare made
cap screw 40.
Referring to Fig. 4 it will be noted that the
adjoining walls of the lining 26 andthe body I
are both tapered as in Fig. 1, thereby providing
a relatively close intimate ñt between them. This,
however, is somewhat difficult to achieve due to
the fact that the machining of the body cannot
be made to a high degree of accuracy. An al
ternative arrangement is shown in the modiñca
tion Fig. 5 in which the tubular lining 26 is ta
pered as before, but the body walls are provided
at the lower end with a _small oifset shoulder 26a.
The body walls can consequently be machined
straight or vertically and the liner 25 held rig
idly in position. Instead of an inclined shoulder
32 as in Fig. 4, a projecting ridge 32a may serve
to prevent warping of the lower edge of lining 25.
The use and operation of the flush valve dis
closed and the advantages attained are as fol
When the flush valve is in use, the parts are
in the position as shown in Fig. 1, with the inlet
water pressure exerting itself in the upper cham
ber 9 on top of the piston I0 after passing
through the by-pass opening 23, thereby forcing
of plastic material, thereby providing smooth
clean surfaces which are immune to corrosion,
rust, and the deposition of foreign matter. The
parts thereby constantly coact in a positive man
ner insuring accurate and reliable operation of
the iiush valve for the full period of` its use
without repair or maintenance. vOther advan
tages accruing from the use ofthe plastic mate
rial are the long life of the relatively few parts
when in constant contactv with water and their
light weight when compared to metal; thereby.
providing for better operation onlow water pres- ‘
eures.` Economies are also effected by the low
costV lof the plastic rmaterial and the savings
effected in shipping the light-weight valves. The
most important advantage resides in the manu
facturing costs and time saved in producing the
various articles, most of which are in mass pro
duction by simple extrusion or molding processes.
What is claimed is:
l. The combination of a cylindrical lining
member andV a ñush valve body in which said
lining member is inserted, said flush valve hav
ing an inlet opening therein, said lining member
the piston against valve seat Il and auxiliary
comprising a body portion subject to warping and ,
Valve I6 against valve seat I8. 'I'o operate the 30 having a slotted opening at one end thereof
Hush valve, the handle 'l is actuated causing the
arranged for alignment with the inlet opening
plunger 33 to engage the auxiliary valve stem
of the flush valve, and means at the other end
IB thereby tripping the same off its seat. This
of said lining member for maintaining said open
permits'the water in chamber 9 on tcp of the
ings in alignment, said lining member having
piston to escape through the axial opening in « slightly tapered walls to facilitate insertion in
the piston and into the discharge opening 3,
said flush valve, and cooperating means on the
thereby lowering the pressure inthe chamber 3.
iiush valve and lining member for preventing
The pressure of the water from inlet 2 is now
warping of one of the ends of said lining member.
effective to act upon the piston and cause it to
rise from its valve seat Il and _permit the water
to pass from the inlet 2 to the discharge outlet 3
and the tail piece 4. The upward movement of
the piston is halted by the abutment k2l striking
the bumper pin 38.
2. In a flush valve comprising a metallic cas
ing having a large opening at one end‘and a
water inlet opening at the side thereof, a plastic
cylindrical member serving as a lining for said
casing and inserted from the large open end
thereof, said cylindrical member and said` casing .
When the piston reaches the Vlimit of its up-- ., ` walls being slightly tapered to facilitate inser
ward movement and the handle is released, the
tion of the cylindrical member in the casing and .
plunger 34 is withdrawn by the spring 3l while
provide a close ñt `between` the walls thereof,
the spring 20 assisted by gravity closes the auxil
said cylindrical member having a slotted open
iary valve head l1 upon valve seat I8. The water
ing arranged for alignment with the water inlet
passing from the inlet 2 through theby-pass 23 :30 opening of the casing means for closing the large
builds up the pressure on top of the piston, there
open end of said casing and one end of said
by causing the piston to move down upon the
cylindrical member to prevent inward warping
main valve seat Il shutting off the ñow >oi’ water
of said cylindrical member, and means at the
through the valve.
other end of said cylindrical member for pre
As the piston moves down upon its seat Il,
venting warping at that end, and cooperative
the refill head i3 enters the axial opening de- ,
fined by shoulder I2 restricting the. iiow so as
to provide the proper amount of refill water to
the water closet with which this flush valve is
associated. The barrel portion I3a in the upper 60
position of the piston is at that time within the
axial opening and thereby restricts the water
means 'on the cylindrical member and casing for
maintaining the slotted opening of the cylin
drical member and the water inlet opening in the
casing in alignment.
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