Патент USA US2406259код для вставки
` Aug. 20, 1946. 2,406,259 l. H. Rus-SELL ETAL FLUSH VALVE Filed May 1o, `1945 40 Patented Aug. 20g 1946 2,406,259 ¿ UNITE-u d_sf'rA'fil'ÍS PATENT 2,406,259y ~ ` A'FLUSH VALVE 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` A Illinois Y « *wffArvllicáiiofi " ' zciaims. Maw,poseían-4862801 (01.'137-‘93yl4r «yL' 11. ., in general_ to flush" valves _. ß 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 fl 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. "M 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 "L 'of-'partsL "A kfurther "object Y ` 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. - . one «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 valve. ' ' V` I " f 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 " g > ‘ ‘ . ` . „'.Fig 3'is a’ plan View of `the piston’assembly of n -' " Y f‘ `. 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; ` " îtheflushvalvey. The" underside of " the head I‘I'Tfis »provided with a sharp abutmentas shown' which . preferred; form of the device' embodying the in vention; 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 struction. ' - v l ' ' ‘ ' ` ¿5,- asishßwne; Anotherbpeningß isarranged in :55 »by-pass. opening ‘ Z3 Vis ‘provided` to permit =wàt`é`r r ' 2,406,259 3 ' 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 properly. ' . ~ ~ 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 soi.it;.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_.parts«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‘appended.claims',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 . Y . ,. 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, ~ adjustable 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` 2,406,259 5 6 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. f 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 lows: 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. IRVING H. RUSSELL. FREDERICK C. BINNALL.