US1772463A - Molding apparatus for sash weights - Google Patents

Description

Aug. 12, 1930.7." H. LUDENSLAGER ET AL 1,772,463

HOLDING APPARATUS FOR SASH WHIGH'I'S Filed May 15, 1928 2 Sheets-Sheet 1 Aug. 12, 1930. H. LouDENsLAGER ET AL 1,772,463

' HOLDING APPARATUS FOR SASH 'WEIGHTS Filed May 15, l 2 sheets-snee: 2

` amusante@ zrylaadezwlagef Patented Aug. 127V, 19.30`

Fr-ICE' f HENRY LOUDENSLAGER. AND Wan'rnn .il LoUDnNsnneEn, orlconMBUs, oHIo l p MoLD-ING Arriinnrus ronsnsH-Wnren'rs of the molding of. sash Weights in solid cy lindrical units and While` said units are main'- tainedatV vertical positionslV Itha-sbeen customary to moldsash Weights in' halves,that is to say, one-half of the Weight being formed in the drag section of themold andthe other half inthe cope section, the drag. and cope sec'- i tions being assembled at the'ti'me of `forming to produce the finished Weight. Thefordlnary Y k method of producingsash Weights is, however, open to objection inthat'there-isso'me diliiculty in properly registering' the mold pockets or cavities of both the drag and cope sections, with the resultl ythat imperfect products are often produced;` fIn` accordance With the present invention thisobjectionl is primarily removed by forming practically all of the sash Weightrinv pockets `or^cavit1es formed in the drag section, the'copev section being largely used for the purpose of providing gates or f runners to permit vor .the trilling y of thepo'ckets in the drag section-Withjthe metal. Y 31,; p

A further obj ect of the 'invention resides in means for Vproviding an'` improved'eyefconstruction on the sash Weightsby providingfa smoothly nished construction and ofnevvh'ich fis' devoidf of sharp cornersfo'ri projections which tend to cut or Vdestroya'cableconnected Y Fora further understanding ollthe inven-` tionireference iste be had:toftheffollovving description andthe *accomr)anyingl t,dra'vviiugs vvhereini i V Figure' 1 the presentv invention,

5r igure 2 is la horizontal/sectional vievv taken` I represents a.'verticallongitudinal sectional lvievvv taken through the improved sashV Weight molding apparatus comprising Vyvveight.*patterns 7. ..These^patterns are or' 192s. serial no. 277,842

through the apparatus on the plane indicated f 4.Figure 3, is a detailedfvertical :sectional viewtaken throughthe: drag section of the t mold showing the latter. in, :itsinitial posi` 55 tion :on` v4the pattern base ofv lthe mold, -IFigurellis a view in vvertical transverse 'section'y showing the sdrag section inverted With thexcope section arranged thereon and positionedfor pouring, y E Figure 5is a detailed view' inside elevation of themold showing the vdrag and cope sec# tions, l Figure 6 isI a planvievv of the cope sectiorn` i. n `l "Figure 7 is] anrenlar'ged vertical sectional view taken throughone of the patterns car- Y ried by the pattern base, v v Figure `8 isatransverse cross sectional view on the line 8-8 of Figure,l r v t j 7U Figure 9 ils-asimilar. view lon ftheline 9-9` o'fFigure?, t y :c I FigurelOis a ViewL in sidefelevationof a i 4 sash Weight yformed in accordance With 'the presentiriventiorn,v Figure y1l :is a' bottom planfvievv thereof,4

' a Figure'l'Q is a detail view showing a` pair f ofdrag sections: andthe ,method of packing molding saridtherein. i K, *l Referring more,` particularly to the drawn` ings, the. numeral l designates the improved molding .apparatus comprising the present invention inits entirety.'y This apparatus is `formed to include apatternbase indicated d generally by theiletterfB; The patternbase vcomprises a board or plater 2 arranged horizontallyupon a supporting table 3. The plate 2 iis provided at `longitudinally and `transver'sely gspaced intervals .lvvitlra plurality of pockets 45 the bottomof which being provided WitdhaXial and reduced openings wvhicln in turn, .terminate` in, relatively enlarged sockets 6 which open to the" bottom of the plateQ yand lin vertical registration with the ,pockf Y `Adapted to be positioned securelyn Within the t Apockets l are vertical upstanding .sa-sh cylindrical form and ea'chtliereofiis' formed 10i to comprise a hollow cylindrical body 8, the lower portion lof which being received within one of the pockets 4. Within the open lower endof each of the patterns there is located a ysplit ripping sleeve 9 provided centrally with a tapering bore and'adapted to be positioned within this bore is-a conicalplug or wedge 10. This plug or wedge isprovidedwith a threaded axial opening adapted for the reception of a screw bolt 11 the shank ofthe latter passingthrough `one'of theopenings 5 and has'its headed end 12 arranged in one of the sockets 6. The bolt 11 further, is providedv with a longitudinally extending'bore 13r for-a reason to be hereinafter set forth. Similarly, the socketsG5 are connected with channels 14 which lead to the atmosphere and `permit of a circulation of airlfreelyinto ythe interior of-the cylindrical :body-8. Obviously, bytightening the .bltfslL'the wedge plugs'V V10 may .be drawn tightly Nintothe-csplit sleeves. 9, rso as to expand the latter and' to thereby frictionallyfholdthe vertical pattern y7`in secured Arelationship: .withi the 'pattern base board 2.

Further, each pattern isfformedtofinclude ahead l315, -which coniprises i a `solid metallicV body having a reduced lower-portion L16 which is welded or otherwise positively secured to the upper end of one: of-thecylindrical bodies 8. Each head includes a pair of spaced'upstanding .pins 17 'whichreceive thereon the tubular extensinsflS ofl asheet metall eye section 19, the latter being forniedyas will be later'explainedyto constitute-a partof the nished sash weight. f i Y -dapted to -be .positioned upon-and isecured to theedge portions of the platef2 is a gauge frame-2O'.` This franieiniy beniade indi erentheights for :the'purpose of controlling t-he size-or weight of thefinished sash weightproduced by the apparatus. T-liat is to say, the pattern bodies 7 are of iixed'length,

1 buti by'ch'anging the heiglfit or thickness of thegaugeframe `2O, it fol-lows tliatthe length of the finished sash weight in'aybe regulated at v4will 'sothat the various :sizes ofsash .wei-ghts,-fnow commonly manufactured, may

' be produced from the single'set jof 'patterns 7, this `,being effected bythe niere change'` in t-hel rectangular gauge Vfra-.lne,iwl'iich maybe vmade in three or fouradifferenttheights. I

I gauge' lframe va anain stripper.' plate-,21, and rvloosely?'carried upon thisfstrip'p'err plate is -a false' stripper pilate 22,. the'. plates-21 and 22 l being provided with openings adapted: for

ters7. -iThe'stripperplate22 hascfitsnor-mal 'asshown nFigure 3.

the reception lofthe 'verticallyvv arranged `'pat- ;upper surface provided fwith ribs 23',- which produce runner (openings or groves "in the -sand body 24 of the drag section 25 ofthe niold," which' runner 'grooves' leadv 'to' the-va lriousl pockets: produced iny 'thefsand fbody124=` by the normal jupper endsof. the patternrv 7',

The drag section comprises a flask frame 26 which is provided eXteriorly with angle brackets 27. These brackets have their lower legs provided with openings provided for the reception of studs 28 which project upwardly frein the ends of the false stripper plate 422,.the said brackets yand studs serving to `,properly lposition the frame 26 on the plate 22 Vand to prevent lateral shifting thereof when the sand body 24 is being packed into the `frame-26 around rthe upper? ends of the pattern 7. This packing of the sand body yshouldl be carried out quite carefully and best.resultshavebeen obtained by placing an additional drag section on the top of the section 25,-as indicated by dotted lines in Figure12. Alarge quant-ity of green molding sand lis ythen `placed inlthe combined drag sectionsanda vibrator orbuniper29 isopen ated-so as tol jai-,or iolt the molding apparatus to causefthe settling lof the sandI inthe drag Sectionsjand thereby ,produce complete settling `of the vsand in l compact quarter around thepatternf7. N Vhenf this operation has been Afully;` completed the extra drag section is re- Vmovedandthefsand leveled ofiA even with the top-'ofthe drag'section. vA follower plate 29 lis-thenfplaced on the top of the dragzsection, astshown inz-Figure 3, and this follower plateis vclamped to. the drag section Aandalso to 'the'strpperplate by means'of frictional4 clamps 30. y n The-bumper or vibrator consists .ofa piston 31 which is ino'untedfo'r; limited reciprocatin; Within acasing ,32connected with the table-3.. YCompressed Vair obtained from pipeline 33jis leadfintovthe bottoinof the casing, fso astocause 'the elevation of-the .piston A31V until the latter contacts with the Iundeirsurface ofthe-'table 3. At.. this, time an -outletfport84fisfuncovered-by the position of .Y thel piston, which f reduces I the air ypressure 1 in the; leasing' and; allows the .piston tofa/ll by'grav'ity;` The closing ofthe, outlet port 34. thennper-rnits'- the airy pressure -to .be `built; lupin the casing to again. effect the rising of therpistonl, this action'isafepeated as long as the vibrator or bumper is inioper- :atiQfil-h, c I l K Toremove-theadrag sect-ion from .the pattern -7the invention rco,ntelnplates ,the ,pro visionfofapair ofVv air. cylinder-S351 located at .oppositeends of theniold. Thesecylinders include V`reeipr,ocating. pistons 36, the stems of'wliich project from the tops Aoflth'e cylinders` 35 anderel provided with heads 37,co1npre'ssed airlobtained "from the lpipe line 33 is adniittedby 4Ineens (3f-valves 38.int o the 'bottmffv fthe cylinders so astoact on thepistons therein. Thispermits the'p'istons f f.1f-ment ofthe Vpiston 36'results in the elevation lil in the sand of the drag section y25. It'will be observed that when'upward movement of the drag section is initiated, the studs or pins 17 provided on the upper end of the patterns 7 are removed from the eye section 19, and the latter-are retained in the upper ends of Y the pockets 40. It has been` found by providing the bores 13 in the bolts 11 and also the similar bores in theheads 15 that any tendency on the part of the eye sections to follow the patterns is eliminated. Were these ports or bores omittedthere wouldbe a tendency of the eye sections to cling to the upper ends of the patterns, due possibly to a partial vacuum produced in the eye sections when the pins or Vstuds 17 are being removed from the extensions 18. The ports or bores effectively prevent the formation of such a suction or par-V tial vacuum and therefore allow readyseparation between the eye sections and the patterns.

- the false stripper 'plate 22` is removed from the drag section and there is applied to said After the drag section has been elevated by the action of the air cylinders to substantially the dotted line position shown in l'Figure 1 a yoke or other form of support (not shown) is attached to the longitudinally aligned bearing studs 41 which project from the ends of the flask frame 26. The drag section Vis then lifted free of the patterns 7 and the supporting base previously described which includes in secure relationship the false strippery plate 22, the frame 26 and the follower plate 29. The drag section is then reversed in position from that formerly described so that theeyel sections will be situ-y ated in the Vbottoms of the pockets 40, as indicated clearly in the Figure 4. At this, time drag section the frame 42 of the cope. This cope liasbeen previously filled and compacted with a body of sand as at 43, and the lower surfaces lof this sand has been formed, as shown in Figure 6, to produce runner grooves c. 44, which register with the grooves produced yin the sand of the drag section by the ribs 23, and which grooveslead tothe pockets 40. Formed in the sand body 43 and in registration with the pockets 40 arenumeral indentations 45 so that the site or weight of the iinished sash Vweight will be molded in the lower end of each weight, as shown in Figure 11. The grooves 44 lead to arriser or gate 46 by means of which the molten metal may be poured into the cope section "and thence by following the'grooves or runnersk 44 into each of the pockets'40`of the drag 'section It will be seen that the molten metal readily enters the hollow interior of the eye sections 19, so that the eyesections'become in effect a uni-tary' part f, of the finished sash weight. The-eye sections,l als-previously stated, fare made ofsheet metal andA as a rregmlt theeye portion fof ,each ofthe finished sash; Weights presents a= smooth polished unbrolcenA surface, A which. readily adaptsitself 'toa cable or other Iflarible element connectedy therewith when the sash Weight isin use. The round 0r smooth surf-ace of the eye section specifically `prevent the .cutting 'ofthevcable' or causing y excessive wear thereof.E `Since thel molten matter of factthe finished sash weight` is y .considerably lgenerally,superior in mostk respectsgto theA ordinarysash weight heretoP fore .generally used, in that lthe sash weight produced in accordance with the present invcntion provides a smooth perfectly rounded i vand cylindrical bodyportion whichiscast mainly inbut one sectionoithe n10-ld and furtheiyis provided with thenunitarily united .eye sectionwhich is of smooth regularform ldevo-idcfsharp projections, angles or cor,- l,

ners. Agaimthe apparatus permits the size, numberk or Y weight .of the completed ksash weight to "be, formed on the end `of; such sash Weights, so that when the latter are stored in pilesvthecgrade or number ,of the sash weight may be readilydetermned `fromend .view inspection, which is a.-.decided advantage over the loraglnalt method ofv placing, .the

numberjor. grade Amarl: onth,e1sideA of Ithe l weight or inthe eyev portion thereof; i

lV/hile there has been 4 described vwhat consideredto be,A ythe i, preferred 4 method .of i

construction and of .operation in carrying out the invention, nevertheless it willbe understood that various changes anddepartures may be made from time 'toi time without ,de-

parting fromV thegspirit or scope of the invention as the latter has been following claims.` y o What is claimed is y 1;'In -molding apparatus for sash weights, a base, a plurality of patterns adapted to be rigidly carried by and to extend vertically from said `base, each of said patterns beingv formed to include a cylindri-l cal bodyportion, the lower end of'said body portion being formed to be received within a pocket provided in said base, frictional clamping devices situated in the lower end Yof said body portion, screws carried by said base and cooperative with said clamping devices, each-of said screws being provided with an axial bore establishing communicationbe` tween the interior-of said body portion andv the atmosphere, a head secured in the upper 1..'7

producing delined the I portion of said body, the upperend 4of said head being kprovided with a pair of spaced pins, and a sheet metal. eye section removably'positioned upon such pins, said head being provided with a longitudinally extending bore establishing communication betweenV the interior of said body portion and the interior of said eye section. f

.2.YA molding apparatus for producing sash weights, `a base, a plurality of patterns adapted to be rigidly carried by andfto eX- tend `vertically from said base, each of said patterns being formed to include Va cylindrical bodyportiom the lower end of said body portion being formed to-be received within a pocket provided in said base, a head secured in the upperV portion of said body, the upper end of said head being provided with a pair of spaced Vpins, a sheetmetal eye removably positioned upon said pins, means for securing each of said patterns to said base and means ormaintaining communication between the interior of said sheet metal eye l v and the exterior of said base. f v

3. A" molding apparatus for' producing sash weights,.comprising a base, a plurality of spaced upright sash weight patterns arising from and rigidly secured to said base, a cope section positioned upon said base,'said cope section being adapted to contain a sand body for the reception of the upper portions of saidpatterns, means for raising and lowering said cope section relatively to saidbase and means provided in said patterns to pre- Y 85 vent a vacuum above said patterns when said cope section is raised.` u

4. A molding apparatus for producing sash weights,comprising a base, a plurality of' spaced upright sash weightpatterns aris- 4oing fromand rigidly secured to said. base, av cope section, said cope section beingadapted tocontain a sand body for the reception of said patterns, and means provided in said patterns to prevent a vacuum above said patterns when said patterns and said cope section are'dissociated.

In testimony whereof we aliix oursi'gnatures.

HENRY LOUDENSLAGER.

- WALTER J LOUDENSLAGER.

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