[1]Patented Oct. 21 1951 21569,615 U@NITED @STAT-E-S PA-TENT @0,F,@F-ICE @@,2;569,61-5 -DRAIN FITTING Foregt -L. --W. 'L:in'k,,-Silverton, johio, assignor @-to 'The:.S,.e,haible @CompanY, @Cini6innati,'D-hiO, @corporation of Ohio .Ap.])Iication,Noveniber 21, 1'9.4,6.Setial'.No.'71ii4al @,@2'Claim. 'This,invention,relates to improvements in'the construction of 'drain -fittings for use in - sinks, basins, and th-e like, and-patticulatly to improvements @in the strainer-and-valve @type of fitting having two positive normal positions, @one 'fully open and one fully closed. One of the --objects -of -the invention @ is to provide a highly serviceable and@durgbledrain.'fitting of the class describe@d, @strudturally ;adapted --for economical- mass @,production. . Another cibiect;ls '@ @provide ia drain fitting df the blass -described, vhidh can be fabricated principally,from thin non@corros . ive,@rust@resisting sheet materieil @ by -spinning, pressing, ,stamping and/or purrehing. Afurth-er@objectisthe,proVision.@cif-adrain tting of,the -class referred to @ reqiiiring @no @screws, welds, or solder'@in-the-2ssembly of @its componerit patts. These and @.other ol@'jects -%and 'advantages are attain6d by 'the-means spedified @hereinafter @-and illustrated -upon'the @a;ccompanying drawings, @in which: 'Fig. I' is a pers .Pec,tive--view, partly'- in-erGss@section, of the assembled @drain @fitting 'in - its vreferred embodiment,,.thoWing@the valve in closed position. @Fig. 2 is a-fra-gmentary,-eross@sectionitl View-@df the same fitting,-with the valve @-in open,.Position. 'Fig.'3 is a @top,,plan--View --of -the drainage-,,sh6ll. @Fig. 4 'is -a -perspective view of @'the valve or iffter stem. Fig. 5 is a -.view, 6f the valve or 'lift-ing i tem taken on:line'5--s of'Fig.@4. 'Fig. 6 is -a perspective -view bf the @v.E@lve: memb,er, partly in@cross section'to show'itsconstruetion. Fig. 7 is a side@@6levational,view, partly,-in rross section, of the &ainage sheill asse@ibly -df @a modified form 6f the inveiition. Fig. 8 is a top plan view of the--same. Fig. 9 is a side elevational @view, -pattly in -cross section, of the. strainer basket and -vdlve@- asserribly of the modifiedform. Fig. 10 is a bottom ,plan,View 6f the"same. Fig. 11 is a perspedtive -view of,the vdlve:st@pport in the modified 'form of, the invention. In the plumbin art, muoh 6ffort 'has 'been @g expended.to me6t a persistent demarid 'for a @lowdrain fitting for,.use-in.kitchen siriks and the'like. - Heretofore, such dr6in-fittings have -been fabticated in a manner the@t,required -many ,co@tly machiiiing.Qperations,'iiitr;icoCte ppera@.tions in as(CL@,4-287) 2 patts@tog6ther,-,andsoon,A l-,6f@Which-necessarily added.'to@the;cost,of'@thef-in'ished@product. This need for -a@low@@MicAed 4sink drain fitting is @largely @sa@tisfied@by,,t-hel device of @the present invention. Its simplicity of ;,congt-ruetion and - assembly, -as Will 'be -here'inafter dise@losed, @permits it @'to @befibricated:by -@mass r@production --- methods @at @ver-y low cost. With Tdference @to @'.Fig. @,-I, @@-the drai@n ;stru6ture 10 comprises,@a drd-inage I @a @strainer ba I 6, @a -valve '17, @and -a,@viilve -,or lifting stem -IS. The -drdinage thell 1,5 @@may@,be --stampedor ot-herwise ;,fashioned - from ;a rLilatively '.thin @ sheet @ -of rust and corrogion @r-egista-nt @-m-aterial, @such as ,15 Monel@met-a-li@stairiless.@'steel;si@l@ver--nidki6l, orother matetial'Whidh;i&@dharaotetizedpby'toughness and high tensile strength and which requires no plating. ,The @,.use -of materidl,-has: the advantage ,of g.,lving @;-the fitting -an @exceeding-ly -,long -20 Iffe,-since,',it @',has --no oldted -sur-face;to weax -,away under "the gbr-asive -aetion,iot scouring @"Powders and other igf-itty detergents commonly used .,to clean --kitchen @sihks. 'i-t - is tilso I immune to attacks -fromnarions adidsand,chen-iicals@coritained @2r) in @waste - products @'passing "thr@ough @the :.drain inciden't -@'to its @@use. The @ shell may comprise a body @portion , 11 7..-haVing : an - annxilat @ flange -20, dispos6d engage @ the z-marg-ins of @a suitable a-petture,--pravidedthrough@the",battom; of @@a,kitchen @gink, ,slab, Lor iother, area 7,to @ be drained. The outer @.w@A.U-@bf @the,@,cup;@like@ portion I@9 @is @ provided - With threa-ds .-211 tG -,cooperate -,with @a @@suitabl-e clamping nut (not shown) for secutingi the -drE@inage@;6h,611; to@-.the sWtEible,.vasher. b6ing usually-disposedb6tween@,tbe@flange@20 andthe@'gilik-to 6ffect- a --fluid-tight @seal,.therebetween. @The lower,,edge @,of @-the -@@bGd-Y @portion 1;@9 @ conver,-e@ @,to @'Cf..Orm -,,a constricted outlet -passagewa-y 22,'@thei-oitter.,wal-13@of@wtith is,th-readed:as 7ait @23, "to for engagemeiit,@vith ia waste -pipe or rtrap in cG mmunicgtion,,withl,-a-,seweri-orother@ waste @dispo,%E@lnieans. -An@;annulaTl--Vglve@seat,25,@',for-@cooperation with @th the@@viilve@17,-ist:provided'inter-nally@@of, e:passage 2'21 ', a't the @upper iperim6ter ',thereof so@id :-vglve 45 seat taperingi-awardly --,from &@-.pdin't lof: maximum width ,where @'it intersects the @conveigent :b6ttom'2'6-6f-the-@hell-45. -ritegrgivit-h@.thedrE@inage- shell- is -an - aux2larystr,2@iner,,,g-enera:Ily-indipriced yet a;ttradtive, serviceable and duriible bo cated '@y '.th-e@-.numerAl 27,,sgid strainer indludiug outlet,ports,U and,la ceilitra@l-lifting stem support portiori 29 -.depiending 'from the radialjv:- exteiidin 9 cross arms "30. As.shown'in'Mgs.;'2 and '3, - the lifter'stem@- supportportion is -a - concentric,hemiisembly, 'the application of -screws @'for securing Bt sPliericEil depression,,t-t the --extreme lower paTt
[2]23569,615 3 of the drainage shell 15, having thereiri a central elongated aperture 32, said aperture having two parallel straight sides 33 and two other sides arcuated on a common radius, as indicated at 34. The function of the aperture 32, an impor- 5 tant aspect of the present invention, will be hereinafter explained. As will be noted from the foregoing, t-he drainage shell 15@ with all its various functional elements, may be stamped or otherwise fashioned from a single piece of relatively io thin sheet material, an important factor in the economical production of the device. Referring again to Fig. 1, it will be noted that the strainer basket 16 andthe.,valve 17 are colicentrally mounted on the lfftet stem. 18, the I as-, 15 sembly being disposed for vertical and rotatable movernent within the drainage shell, 15. The strainer basket 16, cup-lik6 in' form- aiid stamped or otherwise fashioned from a thin sheet of rust and corrosion resistant material, is provided 20 with suitable drain,holes 35. _The upper edge of fl@e basket may be provided with an outwardl3@ extending flange 316, the free outer edge 37 of which is adapted to slide and, rotate fre@@y within the, body portion of the diamage'shell 15. The 2r) floor of the basket 16 is centrally aperttired as at 44 for engagement with the enlarged diameter 40 of the lifter ste-m 18. The valve 17 is sim y P, disc formed with a @@ Pi downwardly and inwardly turned cont.inUOus 30 ,flange 38, said valve bp'mg centrally apertured as at 140 for mounting it upon the diameter 40 of ,the lifting stem I B. The frusto-conical flange 38 is tapered at an angie to conform io the angle of the valve seat 2@ 'm order to mainta . in leak- 35 proof relationship,When in:engagement therewith. The lifter stem 18 is provided with suitable finger gripping,means such as, a head 42 at its upper end, for manipulating the strainer basket 40 assembly to open and closed position. Substan- ' tially midway of its length the lifter stem is provided with a stop 43, against which the strainer basket 16 abuts wheii ra(uated upon the, enlarged diameter 40 of. the lifter gtem, as shown in Figs45 I and 2. After the valve 1.7 iias been mounted on the diameter 40 of the, lifter stem 18, in, abutting relation with the bottom. face of, the strainer basket floor, the shoulder 39.oi sa'id lifter stem is P@eened or rolled over -as- slaown at 41 in Figs. 1 50 .and 2, thereby to firmly secure said basket. and valve against rotation or other movement upon the lif ter stern I 8. The lower portion 45 of the lifter, stem may be pyovided with opposed parallel flat,surfaces 46, 55 giving said portion 45 the same.form in cross- : section as the form of the aperture 32 in the drainage shell 15 with which it engages when the valve is in closed position, as shown in Fig. 1. As revealed by a study of Figs., 1 and 2, the 60 valve 17 may be moved toward or away froni its seat 25 by grasping the head 42 of the l@fter stem 18. If the valve is to be closed,.thereby to maintain fluid in the sink, basin, or other fixture to which the drain fitting is attached, the strainer 65 basket assembly is partially rotated b . y iaeans of the lifter stem head 42 until the' lifter stem portion 45 enters the hat sided aperture 32 of the drainage shell 15. At this moment the basket assembly, with thd valve 11, gravitation@' 70 ally drops until the v6,lve eiigages its seat 25, in closed position, as shown in F.ig. 1. In this posi@. tion, the lifter stem portion 45 extends pE@rtiallY through thb dpertuie 32i laiia b@ vi'rtue.of'its re@.- lationship with said. apetture, . is precluded 75 4 against rotation therein. In order to open the valve, the basket assembly is raised vertically by ineans of the lifter head 42 until the lifter stem portion 45 is disengaged from the drainage shell aperture 32, and rotated substantially onequarter turn, then dropped. At this point, the end face 47 of the lifter stem comes to rest in the hemispherical lifter support member 29, with the flats 46. transversely disposed over the elongated aperture 32 of the drainage shell 15. In this elevated position the valve 17 has become unseated, permitting passage therethrough, as indicated by the arrows in Fig. 2, of waste water or other fluid into the constricted outlet passageway 22, through the auxiliary drain ports 28 and into a suitable. sewage outlet. The strainer basket 16 serves to prevent garbage and other 1:@rge particles ofextraneous matter from entering and possibly clogging the waste pipes leading away from the fitting. The basket and valve assembly is maintained in a firm vertical open position by virtue of the end face 47 being seated in the centrally disposed hemispherical lifter stem support portion 29. In order to remo,@e accumulated waste rnatter from the strainer basket assembly, said assembly may be lifted from the drainage shell 15, and quickly and easily replaced to either open or closed valve position. The end face 47 of the@lifter stem le may be provided with a spherical radius in conformance with the radius of the lifter stem support portion 29 in which it seats when the valve 25 is in open position, as indicated in Fig. 2. A modific . ation in the structure of tlle present invention is envisioned, as illustrated by Figs. 7 and 9. The drainage shell II 5, fabricated of material similar to that used iri the embodiment previously described, is stamped or otherwise fashioned with a downwaidly extending flange portion I I 6, said flange having an inwardly extending annular lip 117. Pressed into the flange tion I I 6 is an exteriorly threaded tubular Por coupling member II 8 having an outwardly extending flange II 9, the annular edge 12 0 of which is firmly embraced in leak-proof relation by the inner wall of the flange portion If 6 by means of the aforementioned pressing operation. To maintain the leak-proof relationship between the coupling member and the drainage shell a suitable gasket or washer 121 may be interposed between the waste tube flange 119 and the drainage shell lip II 7, as indicated in Mg. 7. The body portion 122 of the drainage shell 115 includes an annular flange 123, provided for engaging the margin of a suitable aperture in a sink, tray or other a@ea to be drained. Leak-proof relationshi@ between the sink and the drainage shell may be attained by the application of a suitable washer 124 betweeii the flange 123 of the shell and the upper face of the sink bottom to which the fitting is fixed. The valve seat member 125 is pressed into the upper opening of the coupling member II 8, as at 126, where it is frictionally, held against rotation. An outwardly extending flange 127 on the va lve seat member serves as an abutment which limits the extent to which said valve seat member may be pressed into the coupling part II B. Integral with the valve seat member are the radially extending spaced arms 128, which serve to. support the drainage basket assembly 129 when the valve 130 is in open position, An annular valve seat 131 is provided internally o,f the member 125, said valve seat tapering inwardly a@ an angle conforming to the
[3]tapered periphery 132 of the valve 130 with which it engages in closed and fluid tight relationship. The strainer basket assembly 129, which is adapted to be removably positioned within drainage shell 122, in a manner similar to that shown in Fig. 1, comprises a strainer basket 133, a valve 130, and a basket support 134, all concentrically mounted on a lifter or valve stem 135, The cup-shaped strainer basket 131@, suitably fashioned from a thin sheet of rust and acid resistant material, is provided with drain holes 133 and an out-turned annular fiange or guide rim 139 for engagement within the upper wall pol-tion 140 of the drainage shell body 122. The disc-like valve member 130, provided with the hereinbefore mentioned annular tapered peripheral portion 132, is also provided with a recess 141 for disposition therein, in abutting relationship, of the basket support 134, as indicated in Fig. 9. The basket support 134, shown in Fig. 11, may include a flange 142 depending from its periphery. This flange is provided with a series Of depending lugs 149, with intervening spaces 143, the number of lugs beirig equal to the number of radial arms 128 in the valve seat member 125. The basket 133, the valve 130, and the support 134 are all centrally apertured as indicated at 145, 146, and 147 respectively, said apertures being of equal diameter for concentric disposition on the lower portion 148 of the lifter stem 135. The floor of the strainer basket 133 abuts a shoulder 159 on said lifter stem, while the upper face of the valve member 130 abuts the bottom of the basket 133. The support member 144 is disposed within the recess 141 of the valve 130, and the three parts 133, 130, and 134 are secured in their relative positions by rolling or peening over the peripheral edge 136 of a recess 137 formed in the bottom face of the lifter stem 135, as illustrated in Fig. 9. In normal open position, the flat bottoms I 50 of lugs 149 rest transversely on the radially extending arms 128, thus supporting the basket assembly 129 in an elevated position. When the basket assembly is so disposed, the valve 130 is unseated, thereby permitting free flow of waste water into and through the tubular waste member I IO. In order to close the valve, thereby to maintain fluid in the sink or other fixture to which the fitting is applied, the basket assembly is partially rotated until the lugs 149 disengage from the drainage shell arms 128 upon which said lugs rest. At this moment the basket assembly will drop, bringing the valve 130 upon its seat 131, in fluid-tight relationship. In this closed position, the lugs 149 are disposed within the drainage ports 152 of the drainage shell, with the spaces 143 of the basket support 134 straddling the radial arms 128 of the drainage shell. The basket assembly may be lifted or rotated by means of the head 153 of the lifter stem, said head being suitably formed to provide finger gripping means. In order to clean the strainer basket 133 of refuse, the strainer basket assembly is lifted out of the drainage shell by means of the head 153 of the lifter stem. The basket assembly is then replaced to its normal open or closed valve position. Yrom the foregoing it is obvious that there Is provided a simple and positive acting drain fitting which may be very economically manufactured andassembled, and which, once assembled, is trouble free, since there are no ,,ins or other delicate parts to become damaged - broken. It shou ol Id also be noted that the valve is not given to rotary motion relative to its seat when it is seated or unseated, since the valve is constrained to move vertically toward or away from its seat, thereby eliminating wear between 10 the cooperating valve members. It is to be understood that various structural changes and modi cat-'Lons may be made within the scope of the appended claims, without der-arting from the spirit of the invention. 15 What is
