US815181A - Casting mechanism. - Google Patents

Description

' PATENTED MAR. '13, 1906.

- W. T. KRAUSB.

CASTING MEGHANISM. APPIIUATOAN FILED A215.. 12, 1905.

' 2 SHEETS-SHEET l.y

' flttodflut ma reins. ma. um. Hulman. n'. c.

UNITED sTATns lPATENT OFFICE. 4

. WILLIAM' T. KRAUs, or BALTIMORE, MARYLAND, Assionon oF.

:ONE-THIRD To DAVID R. STEELE AND ONE-THIRD To-HARRYD. HARvEY, oF BALTIMORE, MARYLAAD.

To aZZ whom it may concern:

Beit known thatI, WILLIAMT. KRAUSE, a citizen ofthe United States, residing at Baltimore, in the State of Maryland, have. invented certain new and useful Improvements in Molding or Casting Mechanism; andl I do hereby declare the following to be a full, clean..l

and exact description of the invention,- suoli-A as willenable others skilled in the art to" which it appertains to make rand use the and claimed. j

elevation.. Fig. 2 is a top plan view of the ing platel uponwhich the cope is supported v when the molding-sand is rammed within the same; ing the cope after it has been packed withcope. Fig. 3 is a detail sectlo'nal view ytaken through the cope and the forming and shap- Fig. 1 is a' detailsection'al view showsand and having aI core suspended therefrom. Fig. 54, isa detail sectional view through a portion of the mold; showing the cope vand core in position in readiness for the pouring of the metal." f

It is the object of the' present invent-ion to so forma molding apparatus that articles to be molded may be cast and 'removed from the mold incomparatively quick succession.. The invention involves the molding or casting of 'articles in a metallic mold which re,

quires no sand in the body 'port-ion of.' the mold. In connection with the metallic body portion; or y'drag of the mold a vcope is employed in which molding-'sandis tightly'l rammed "or tamped7 andy guiding meanslis provided 'for effecting thequick and yetac.

curate seating ofthe cope upon the drag-ofv the mold,'insuringan accurate centering ofthe core 'or l cores employed-1in connection with the llask or mold.- v

In the accompanying drawings I have illus- 4tratedl a pract1cal Vmechanism 'for' carrying out the spirit of the invention, the said mech- Specification of LetterQPatent.

rApplimttilm filed pril 12, 1905. Serial No. 25`i,130.v

' f cAsTlNG MEoHANlsM.

anism being made up ofa metallic ldrag or 'body portion of a flask, as 1, and a cope?,

Whichcompletes the ilask,y resting upon the upper edges of the body portion 1. lThe drag or lower member ot;v the mold is preferrepented March 13,1906.

ably providedwith trunnions l3, which .enf

gage1 ings 1,"foi'fmed` insupporting-st ando. By thus mounting the mold 1t may be tipped for -facilitatiijigjthe dischargingof the molded articles thereiom. AThe interior' of the drag or lower member 1 of the mold or ilaskis-shaped in accordance with the contour Which itis desiredto impart to the article'cast. l The upper edge of 4the said drag 1 is provided Wit-h outwardly-extending ilanges 6, which receive and support the ring 'or frame of the cope '2. Apertures 7 are formed in the said flange 6 for receiving pins, bolts,`

or projections carried bythe cope-frameand. used 1n centering and properly positioning the cope with' respect to the drag when the members ofthe mold or flask are brought together.

body portion having a lower laterally-project-ing flange' 8,Wh`ich lits upon the lange; ofthe drag.` :.{Projecting inwardly from the walls ofthe cope are core-supporting arms 9. There may be any desired number of such core-supporting arms; but four arms diamet- '.rically opposite to each other usually sui'lice for properly holding a core imposition. The

copeis preferably formed withmeans for supportingA it in such a vmanner thatit may be turned over, so that lwhen it is to be tamped with sand it is rolled" over with one edge up-y permost, and when it Is to have a core secured thereto it is: --turned with the other. edge up, afterwhich'it is again rotated for brinoing the'core'in a suspended position beneatIi the cope and inread-ines's for insertion Within the metallic dragI or' mold. Asimple means offacilitating these movements ofthe cope is shown'in the drawings and' consists'of l laterally extending arms or trunmons 10,

aised roo' The flask 2 is formed with a ring- I prins l11, which project doivnwardly there-l la'rly Well suited for the casting of twyers, such as are commonly used in furnaces of various types. In the drawings I have illustrated the mechanism as adapted for cast- Aing tWyers of an ordinary type, the twyers belng usually formed of brass and made -With an annular hollow portion or recess around the outer edge thereof, While at the center there is a passage-way or aperture extending entirely through the said tW-yer. The life of these twyers in use may be greatly lengthened'if the walls of the tivyers are made of a uniform thickness throughout, and the molding device forming` the 'subject-matter of this invention is especially Well adapted for accurately producingr such twyers with f Wallsof uniform-thickness throughout.

The cope is made to support 'the core of the twyeror other article cast., and for securing such core to the cope slender loops of cast material, preferably iron, as at 12', are mounted in the core, lthe core being formed and baked around the said loops. The loops are made suiciently slender to be easily broken when the core is to be taken out of the casting, but are sufficiently strong to firmly hold the core in place upon the cope. The lower ends of the supporting-loops 12 are provided with heads or enlargements, as at 13, which assist in anchorin the said loops Within the body portion of t e core. The upper bent ends of the loops 12 are engaged by hooked l bolts 14, Whichv are supported upon the arms 9 and vengage thebifurcated inner ends 15 thereof. A nut 16 upon the u per end of each o fsaid bolts serves to draw glie bolts upwardly and make theloops 12, together with the core, rigid with the cope. The arms 9 are arranged in radial relation to the cope-frame, so that the bolts14 may be drawn'inwardly for a small-sized core or placed at a O'reater l distance from the center When using allargersized core.v The cope-frame with4` the coresupporting :arms is' thus adaptable for the casting or founding of dierent-sized articles. In forming the twyers such as above referred to a central core 17 is used, Whichis set into the drag lor lower member' of the mold, a centralaperture being left in the sand packed in central core 17 is formedl of baked sand or like suitable material. I

In molding metal in a metallic mold it'is needful tof keep the mold at a proper temperature, and I therefore provide heating means for this pur ose'. In order to properly heat the mold, provide means which is :1.1 ed 4beneath the mold when in its normolding position. mule any heating y be employed, I `preferably use a Theburner, as 18, which is mounted opposite thev open end of a passage 19, formedm the base or brickwork 20 beneath the mold. The passage-way 19 leads to a oint directly beneath the mold, so that the ames and products of combustion from the burner will be delivered against the bottom of the mold and may be ymade to thoroughly heat the same. If a hydrocarbon-oil burner is employed, the de rec of heat applied may be varied as require yfor preserving the proper tem erature in the mold. By heating the mol in 'this manner I find that the metalwhichi poured 'into the mold lies against the inner surface of tli'e mold so closel as to receive a smooth and even surface after it has become set and hardened.

In using the mold the cope isl removed.

from the body portion ofthe mold and is set upon a plate 21, which is provided withapertures 22 to receive the pms 11. The plate is formed with upwardly-projecting studs or bosses 23, which are arrangedin exact c orrespondencewith the position of the coresuspending loops 12. Centrally locatedupon the is made s ightly larger in diameter ythanv the mold-core 1j. Molding-sand 'or some similar composition is then .packed in the cope and tamped down tightly against the plate 21 and around the core-sup orting arms 9. The cope is then inverted 4y beinggrolled over upon its su porting-trunnions 119,- and the plate 21, wit its bosses and sterri`24, is

25 with its securing loops 12 are next secured to the su porting-arms 9. The saidcore 25 is molded) and baked With upwardly-extending conical projections 26, Which surround` the upper ends of the loops 12 and form ap# ertures 27 in the top Wall of the twyers which are cast, through which the `core may be removedafter it has been .broken up or pulverized. The-up er ends of the'` conical projections 26 are shg itly broken from about the ends of the loops 12 in order to hook the bolts 14 in the ends of the loops, and :thus be able to suspend the core from the arms 9 of the cope. The colpe after the'c'ore liasbeen secured to it is t en turned over u onjits 'tru'nnions, and any suitably-arrange -fhistis seated upon the mdld aln'd' for accurately` `and properly centeringthpositipnof the core and cope with respectto Said mold. u A top plate 27 is preferably placedupon-the top ofthe co e, as shown in; .'g. v1. v*naperture is ma e in th'eto'p plate allittle' larger than the diameter of thecentralcorefl 7 and plate is acylindrical block 24,Wl1ich i iov5 f moldandcope n 3.5- v j ingl articles with thismechanism' is. also'a .speedy one, since by they v lifted off,- an

as above pointed out,'the aperture formed in the 4sand-of the cope is. also,y slightly larger' vthan the central core, anda gate for pouring the metal. is thus formed around they core -17 '.as .shown in Fig. 1. The moltenv metal ofy -the ti'vyer' or .other article is to .be formed is poured into the gate 28 and iillsthe 'space between the core 25 and the mold and betvveenthe inner core 17=andy the outer core 25. Assocn as the'metal is hardenedsui- 'ciently' the co e is separated from the. core,

thefmold is tipped upon its.v

. trunnions for turning the, article out of the same. The core 25 -is broken 'within the tWyer, and the loops 1 2 may be broken and removed from their positions, after which the pulverized inner core can be blown or otherwise removed from the apertures 26 formed in the end wall of the twyer.

The lower end of the centralcore 17 is iinished' ofi perpendicular With the a'Xis ofthe core and iits upon a flat central surfa'ce28, formed' 4inthe bottom of the core, so that when the core 17 is set in position for casting it Will occupy a concentricposition inthe I find that in casting metaharticles this y mechanism is very accurate and capable of producing lperfect results, since the parts are pro erlyocatedivith respect to eachother an lthe walls 'ot-such articles as t'ivyers can be cast of even thickness throughout With-I out-'any particular adjustment or careful at-I tent-ion on the part ofthe operators in bringing the parts'together. The process of cast- Ianiming of .a few copesbe ore the molding operation begins a number of castings may be made in quick succession. The copes can be quickly adjusted over the molds and the metal poured, and verysoon thereafter the com leted article may beturned out of the mol when it is in readinessY for receiving another cope and forming another casting In this'manner. a number ofcastings may be made in vthel time ordinarily required for forming a single one by methods in--comnion use. It is desirableto place some preparation upon the inner surface of the mold, which .will prevent. the metal from adhering-thereto',

and I' find thatif the inner surface of the metal mold isV `rubbed with' graphite Vthe larticles will come outsmooth and' Well formed,` and one such reparation of the interior of the mold will last for a great many in structure and not easily-gotten out of or er.

Of course l do not Wish to beunderstood 'as-limitingqm-yself to the .castin of tWyerS, thoughthe apparatus is. admira ly adapted 3; A casting mechanism comprising a .shaped unlined'meta-lmold, a' cope' mounted on` the upper. Vopen edge thereof and having' reparation and -for this purpose, and I consider any change 4 in minor details of the mecha'msm as clearly Within the scope of the invention.

L .'Having thus fully described my ini-rentrer;z

Whatl claim. as new, and desire to secure '1. A casting mechanism, comprising a 'metallicmold or drag closed kat the bottom, a

cope suspended across theop'en top, a. core suspended from said-cope and vertically.-

movable'jointed suspending -meansvfr'supporting. saidA core," the movementfofsaid lmeans effecting the vertical' adjustment of.

'thesaidcore 2. A casting mechanism, comprising a'cup-f shaped mold forming a .metallic ldrag," supporting-trunnions projecting from the upplffi portion. thereof, a cope extendingaerdsg .th-

projecting therefrom, a removable'core'hiiiig" om the under side of the cope, soas to' .project into said mold or drag and-vertically-a'dupper edge of the same, supporting-trunnions justable articulating supports carrying' said'- core.

core-supports eidend'ingi inwardly over the mouth of 'the mold, a justable-'suspensioiif' meansl carried b said projections', a core arembedded therein for engaging the said sus'- pension means and thus core Within the mold.

4. A molding mechanism, .com rising hollow. metallic mold, a co'pe capa leof it-l ting upo'n said mold, a-core,vertically-adj11st- `able suspending means formed of jointed sections for holding the core upon said cope','a'nd.

meansfordirecting the copeaccu'rately in;

ranged `to exten Within the mold and means* properlyholdingthe' les position uponthe mold for 'properly centering the core'therein. j

5. A'casting mechanism, comprisinga'umet'allic mold a cope capable of being accurately n positioned over the same', .a core adju'stably suspended beneath-the cope, the .saidjcore having hook-engaging means fl 'proeting above its u persurfaceand'vertica'y-adjustable hoo carried by the cope 'and yeilgaging said hook-engaging means, for hold;-

ing thecore in place.

"6.. A casting mechanism*comprisingfa mold, a cope arranged. above thesame and' having inwardly-extending core-sup 'orting arms, a removable core, loops molde Y inthe: `V said core' and means carried by said arn'is'for engaging and removably suspending the loops from the said arms.

7.*A casting mechanism, .comprising a- A mold, a cope fitting uponthe same,'co' mpris'- mg a ri'nfr or frame, inwardly-projecting arms* having slotted inner. ends, 4bolts mounted the slotted ends of said arms, and core-sup#` tach'inga core to the cope-armsk 8.; '1% roasting y, meeliansmf mmprsing a mold@ cope.itting upon-the Same 'wd 1'0-v 'Jvidedfwitli-supporting-trunnons by W `clf1` thee eopemay be` elevated or de res'sed or 5 may beturned ove'lfuponla suitab el support,`

)ineens carried by tbe .cope land engaging .the-moldor properly centering the core wlth- Ainj'the mold. 4'

1Q.'A `casting mechanism, `comprising a metallic mold, a' `removable. copey mounted arms-mounted in the cope] thereon and carrying ,sg core, the corebeing capable of projecting into the moldtl1e cope;

having `@central o ening'fo'rmed thereinLand ..centrel removalb e cere arrangedwithn the -Core-supporting cope."-

.,f: In;.testimonywhereof l my lslgnamne lnpresence of two'Witwesees.

WILLIAM T, REMISE..

Witnesses:

' FnnDEmoK=S.NIo1-10L, SA'oKvnLEJC'. WoLLETr.

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