US1443349A - Machine for forming refractory molds - Google Patents

Description

jmawzs. 1,443,349.

P. COOKE. MAcmNE For( FoRMlNG REFRAcToRY MoLns.

u Fugen JULY' I8. 1921.

rented `certain new an Paauwe? Jaa. 3o, i923.

l PATRICK oooknfor sr. LoUIsQMrssoURI.

MACHINE iron ronMINennrRAcToRY MoLDs.

Application filed 'Juiy is,

To all @07mm aft/may concern? 'Be' itfknown'that l, `PATRICK Uoo1n`,3a citizen of the United States, I'residing attit. Louis, inthe State of Missouri, have ind useful Improvements-in lViachines :for Forming Refractory fractory molds may be Molds, ofwhich the following is` ay speci fication containing a full, clear, and exact; description, reference being had to the ao-y coml'anying 4drawings, formingy a part hereof; i F

My `invention consists in the novel construction and combinationv of -partsfand in the nenT process, hereinafter particularly describedl andy distinctly claimed.`

`The object of my invention is to provide an improved `machine forforming refractorymolds in whichsteel, iron, or other ymaterial may be cast, whereby much handwork may be done away with`,and the returned out rapidlyA in large or vsmall numbers, as desired. i

In the drawings, v y

l isa front-elevation -of a `machine that is constructed in accordance with my invention, and which may be'used in practicing my process.

ofthe lower end ofthe Fig. 2 is a horizontal sectionfof the-said machine, taken on the line 2y-2of Fig. l.

Fig. 3 is a detail view of the'lower end of .the vertical'revoluble packing-head shafty with the packing-head and the die or core, which are carried'by said shaft, shown in section, and i F ig. 4 is a detail enlarged vertical section l y detachable flask lor container, in which krthel packing-.head and' diefoperate; 'the view` showing the location of said parts at thebeginning of the process offllingthe flask or container .with packed sand, clay, orother material which can be used inimaking a mold, or in molding plasticy material. i

The numeral l designates a horizontal table or platform, upon which the ask or container 2 is detachably held and supported during theV making of'amold, or in mold*- ing; said table *being (in the present instance)` secured to and supported a distance above theflooror" ground by opposite'vertical side-frames 3, of the machine.'v Said side-frames 3 aresp'aced apart at the lower ends by the'said horizontal member 1,l

andiatvtheir yupper ends bya-fhorizntalj crossfbarftgwhlch is secured'to theupperl'` kcourse may be rectangulaigor la removable base 8 that is placed upper surfaceof the said table'l.'Vv f i A Screw`- lamps 9 yare used 1in `the. presen@ 1921. senjai Nb. 435,608.

ends' of said side-frames; said last-menf f` cloned members being" wide attheir' lower ends, to provide a sutlicient support for the i,

machine,fand enable lsame to stand alone on i said, wide lower ends f," but said' side-frames are narrowed at a point slightly `above the said table l, and from'thereupwardly yto their upper ends, to lighten same,'ask well as to save vmate-rial., `The narrowed side` frames are clearly shownv in Fig. 2. *y

-Saidfliask ordetachable container l2 is preferably in cylindrical form, but ofA desired shape in cross-sectioniiy n lts function is to contain the'packed sand, clay, or other material, and to act asa ask in supporting the packed material until: the latter is ready to be removed 'from v the liask. .M 1 Y To? facilitate the lremoval of said flask or container' 2 vfrom the packed material within it, after a mold'or casting hastbeen 0f any other made, I form said fflaskin detachable sec#4 tions, and detachablyconnect them by means of common perforated; clamplng-ears- 5 through the perforationsof which ordinary bolts or screws 6 are passed.

' Said flask 2, or the sectionsthereofftin y lcase it ismade in two semi-cylindrical sections) have a horizontal marginal iange 7 at'thelowerend'thereof. which rests uponv uponthe casetto engage thelange 7 ofsaid flask, the table l1, and to securely clam'pthe'saidre m'ovable `base Sand said fiange'to the saidl table.' See Figs. v1 and 2.," 1 f Said flask 2v may be madeof any desired material, and of .any-suitablediameter and length, to turn out casts or molds of anyslze andlengthjI A verticall packing-head shaft 9aL has its upper portion mounted' @to revolve inn aligned'bearings formed in vthe 'upper i sec-1k tion l0 and the lower section 11 ofacrossh'ead l2.`A

But the said packing-headshaft 9a" is fixed 4against axial movement in its? bea-rings,

by a gear-wheel i4 which isY fixed `upon said shaft by meansof a rpin 1 5 `orother fasten'- ingk device, fin the space between' *the jsvavidV upper `and lower sections ofs'aid cross-head.

VFixed against" rotation: upon the i 'said packing-head :shaftffQ cat 'a' point P"naar the Y die or core 21 that is mountedonsaid shfaittl head 12 is bound bars or strips' having the openings 17 through which the v4sand or clay passes during thermalring or" a cast or mold, and also havingthe augerlilre or carnfshaped diainet-rically-opposite4 inclined arins or members 1 8, which press upon and pack the materialin the `flask and make av strong and firm cast.. or sand-mold* when beneath y said packinghead7 saidhead is rotated in the direction oi the ar1'ow,"and moist ySandi orsother `material is fied intosthe said o aenings Said packing-.head 16 mounted uponv a rectangular ornon-circular portion 19 ot the said packing-head shalt7 to tix said head on said shaftandto cause it to rotate when said'sliaft is revolved.l f

lAxial, or vertical movement ofl the said packing-head on said packing-head shatt is prevented. by i0 on the'shatt above said head and by a directly-beneath said head.l n Said die or core 2l is loosely mounted upon a cylindrical extension ot said packing-head shaft 9, directlyl beneath said paching-headk .16, so that said die or` core will not revolve in the packed sand or other material. '1

A washer 22 is mounted onsa'id packing" headishaftextension, directlyl beneath said dieor core, to support the weight theieo'hwli'en the said shaft, packing-head, and die A or .core are graduallyinoved up!v ward, in inalringfa niol'dor4 cast.

y A cotterfpin 23ispassed through a lateraly hole `in saidv shaft at a point below said washer 22, to preventthe latter from being forced oli' thex'end of said shaft;

lSaid lupper section 10 olf' the said cross- V to the lower section 11 thereofby means of short vert-ical bindingy '24, which are attached to both of said sections near the endshthereo'hv bylineansot pins'or bolts 25, so that-said sectionsxextend parallel with each other);

andare practically one piece'. In tact,they

\ can be cast or otherwise madeina single The ends of said cross-head sectionslO and 1,1 engage vertical guidefstrips 26 which` are fastened to the inner facesgof the said `side fraine`s- 3 by means Vor' screws or l rivets` 27,-Where`byzthe said cross-head may move `upfand downg but will be prevented from rotating.

Another gear-wheel or pinion Q8 is located in the spacebetweenthe upper and lower sections (it said cross-headlZ and its teeth are always in mesh' with the' 'teeth' o'ly' said.

lfirst:mentioned gearf'whee'l 14:,v but?y said ,Qear-Wheelor pinion 28 has a non-circular 'haefaiffiis tenter, throueh'vhh loosely passes a'fvertical clrive"'shaft'-29.T the greater part l'ofwthe' length iofwhic'h is lnon L-circular 17 of said head;

gear 34 that is carried an enlargement'or shoulder` suitable motiveepower may and pullthat the/"i p arts carrier .j therebyhead 16 and the die or core tainer 2', with the lower or core resting in contact with theupper surin cross-section, so that as said shaft 29 re# volves itwill drive said gear-wheel or pinion,` and at the same ter to move vertically upon said shaft,l as the cross-heanlvand packing-head, as well as the die or core," are moved up and down. ySaid drive-shafthas journals at its ends. and its lower journal isinounted in a bearing formed bracket 30 whichy is secured to the inner tace of one'oi saidy side-trames 8, whilethe upper journaloi" said shaft is'inounted ina bracket 31 that is secured tothe saidv cross-.bar 4c by means of tastenings 32. n l p A bevel-gear 33 Vis fixed upon the upper portion ot said vertical drive-shaft 29, and

time permit the latis engaged bv the teetl'r-'of another beveln by the adjacent end oin ali'orizontal drive-shafty 35 mounted in bearings 36 carried by a bracket-BIT rest-infr upon the said cross-bar lhat the upper end of the machine.

. For'imparting` motion to the drive-shaft be used; but in thepresent case l have shown a common belt 3S arranged to engage tight,v and loose pulleys on said shaft. l., p

The numeral 39 designates the .tight pula ley and 40 designates the loose pulley, i

. Counter-weights p' ll1, areV suspended h3* rope-,sor cables 4:2 which run over grooved" rollers or pulleys 4B mounted upon pintles or pins atthe upper portionot theirtrainc oi thellrnachine7 and the ends oit said ropes 'or cables which are opposite those to which id weights are connected attached to cross-head 12 by means oi common hooks.y eyes.. staples. or other tasteningst so tsof the cross-head andall will be balanced b v said weights; whereby said cross-heat and the parts carried thereby 'ill remain at any desired vertical; adjustment on the side trames of the machine. until intentionally, moved up or down. i Y

A recess Meis formed in the said remow' able base 8, topermit the loweriendo'l" the said packing-head shalt-9?L Vand th'erwashei 22 and Cotter-pin QStO-passbelow the plane` ot the upper surface of said base, andto Y ln practicing myv inventiomthe packingf' 21 arelowered to the lower portion'oi" the said aslz or conend' of ythe said dic 'tace of said base. 8. r Y

Then a quantity oi? moist sand'or other material out oit which it is desired to make a.' niolchl isthrown into.V the upper: end oi" said flask or container 2, and said material will gravitate to the lbottom oit said flask, passing through the said `sand openings or passages 17 in said packinghead `16, and filling the annular space between said die or core :2l

- and the adjacent inner surface ot said flask.

as shown in Fig. 4.

Then the machine should be started, by applying the motive power in the manner previously described, and the said packing4 head 16 will be rotated toward the left-hand, as indicated by the arrows in Figs. l and fl, and the sand y beneath said head will be rinly packed in said space between said die or coro and said flask; but said die or core will not rotate, as it will. be held against rotation by the initial charge oli material.

y.fils the rotation oif the said pao-kingdiead continueaand as supplies oli' material are added 'to the open upper end oit said 'liask, the space between said die or core 2l and the inner walls of said flask will be gradually and rapidly filled with firmly packed material, forming` a .mold whose interior has' the shape of the outer periphery oi: the said die or core1 from end to end oi' said mold, or part of the way7 as desired.

As before stated, the said die or core does not rotate, but is dragged upwardly as fast as the Inc-ld is iilled with packed material, thereby making a. straight and smooth pas sage upon the interior of the mold, having a cross-section corresponding;` to the crosssection of the exterior of said die or core.

For instance, if the coreor die has an eX- ternal periphery that is luted or ribbed, as herein shown, the internal walls of the mold will be of corresponding form.

In making clay sewer-pipe, or in making a mold in which steel or iron pipe is to be cast, the said core or die 2l should, of course, have a smooth cylindrical exterior.

The asks are filled and packed rapidly, and large numbers of the finished molds may `order to support the mold while with the molten metal; and after the latter form secured. to and supported by lr the mold yis to `be used in casting-steel,

iron, or `other metal, the mold is poured while the `flask or container 2 is around it, in in contact has cooled, said iiask may be quickly removed by releasing the clamping-bolts, 6v

from the said clampingears 5. whereupon the packed sand may be knocked or scraped off of the casting, as usual.

l claim l A machine of the class described, compris-1 ing vertical side-frames; a horizontal plat' thelsaid vertical side-frames; ailask or container de tachably secured to and supported by said horizontalv platform; a cross-head loosely vmounted to slide axially between said ver- `tical side-frames; gear-wheels mounted to revolve between the upper and lower sec tions oli said cross-head; a vertical non-circular shaft for driving said gear-wheels; a vertical packing-head shaft having its upper portion mounted to revolve in aligned bearing'sformed in the upper and lower sections of said cross-head; a packing-head mounted upon the lower portion of said packingehead shaft, to pack the sand or other material in f said flask or container; and a non-rotatingdie or core arranged to be dragged after said packing-head out'o the packed sand or other packed material as the mold is gradually packed.

ln testimony whereof, l have name to this speci'lioationin presence of two subscribing witnesses. l'

y PATRICK COOKE.

Witnesses :y

JOHN C. HIGDON, HENRY L. HIGDoN.

si gned my p'

Images