US1403467A - courtot - Google Patents

Description

L. COURTOT.

MEANS FOR FIXING FOUNDRY COBES IN MOLDS. APPLicATloN FILED MAY 2a. 1920.

1,403,467. Patented Jan.10,1922.

A TTRNEY L. COURTOT.

MEANS FOR FIXING FOUNDRY CORES IN MOLDS.

APPLICATION FILED MAY 2B, |920.

Patented Jan. 10, 1922.

3 SHEETS-SHEET 2.

/NVENTOR ATTORNEY L. coumo. I MEANS FOR FIXING FOUNDRY CORES IN IVIOLIIIS.`

APPLICATION FILED MAY 28, |920.

1,403,467. Patented Jan. 10,1922

g 3 SHEETS-SHEET s.

/NvE/VTOR ATTORNY 'AL-m.

UNITED MEANS FR Ffllfllir COREE IN MODES.

To all whom it Wfl/nj confiere.'

Be it hnonn that l, Lenie Cointrin, zen of the Republic oit llrunce..rf .L Peris, Seine Depertr it, No. 9 Rue Ribot, in the Republic olllllrence. have invented certain new und Means ifor Fixing; loundriv Cores in li/lfilds 1to1' which l hui-,fe .filet epplicntions in Frunce Feb 7, 1919; Belgium les'. 1.8, lili?, und in Italy Mer. 2521, lill??? oi1 which the following' is e sijieciiicetion.

This invention reletes to iniproresiente in costing hollow bodies, und the seine hes 'tot' its object incre porticulorly to provide Ineens ivhereby the cores used in connection With the molds required im.' cestino; such hollow bodies or elements tney be ield positively in position within seid. molds during the pouring operation Further7 seid invention hns for ohject to provide Ineens whereby the cores used in connection. with niolds for resting; tubulin bodies, pipes, radiator sections end other bodies having comparatively lont; or Ylerne internal cavities muy be so held in position Within the molds thst the seine will not become displaced by the pouring et thi` molten metal into the mold.

Further, seid invention lin-s for i"" object to provide means for holding; or li A n the core whereby to prevent ull tendono@7 therew oil. to lout or sinh during; the pouring@` open etion7 und thus insure e uniform inetul line in the tiinshed costing.

Further, said invention hes For its object to provide e holding or .Fixing ineens oi" the character specified, adopted to be inserted between the upper und the lower mold iiaerts, sind to engage the core, whereby ell in niente of the core with respect to the incid will be effectively restrained.

Other objects will in perl'. he `obvious end in part be pointed out hereinetter.

To the attainment of the eiioreseid objects end ends my invention consists in the novel details oit' constructioin end in the combi; fttion, connection und arrangement ci ports hereinafter more fully' described und then pointed out in the claims.

Various applications oit this improved Ineens of lining cores ure illustreted by wey of exemple in the ecconipunyin drewings in which:

Fifrure 1 is e cross section on the line of Fig. 2, of e mold ready for receiving the' molten. metal;

flieeiieetien of Letters Potent. Taijiuigd J3Jn 'My 1922 core, and o? is the member 'for fixing the core.

hs shown in Fig'. Ilj the lifting; .ineens has, in the pert where it is in content with the core, the circuiur shape oi? the letter, und therefore its prercnce docs not uiiect the cross sectional lpostumo oi the pipe. .ln seine ceses the core muy he :tornied et the point Where it is listedy with n groove in which the lining member engages, in order not to diminish the thickness oi the cestinon et that point.

los shown in Fig. 3, the lining' member Where it is in content with the coree is mede l oi: V-shupe so es to eiliect e better centering oi? the core7 end diminish the length oit the :fixing nieniber. ln such ceso the ooi-e is 'formed et thev pointV Where the timing; nien ber is applied. with ll-slieped iinin notch. This construction is employed where there is no need to trouble about sli glitljgf diminish` inp; the cross sectioned passoire oit' the pipe oritubes et the iin' .ig point, 'for exemple 'in pipes or radiators for nesting".

41,. 5 end 6 show cross section oll u inold ii'or u redietor element comprising more then one tube.

ln Fig. is the tubes constituting' the redim tor element, are plein, that is to soy, with out ribs or longitudinali bends. The dren@ shows clearly' the errengenient oi the ii i no' niemberd which consists oit' e continuous strip or rod embracing; all the tubes that constitute the element, This strip or rod beu-rs upon the send in the plaine ot the joint of the mold on esch side ot the element and between the tubes.

ln 5 the tubes hnve longitudinel ribs. ln this exemple of the application of the .invention the it proved lining' ineens follows the proiile ci' the longitudinal ribs la et the noint Where these ribs nre situated in the plone substantielly parallel with the joint of the inold in order to obtuin the largest beirine surface `possible of the send against `the mold.

.ln Fig. 6 the tubes ere connected by a Y Web m. The fixing means in order toV bear upon the ysand of the mol-d between the tubes, is arranged at this point upon one of the faces of the web.

l mold between the tivoV tubes, lmight be reducedy to such an extent that the pressure exerted by the fixing means at this point would pushl back the sand with the result of shifting the core, thereis arranged in the mold a metal" piece Z`Wl1ich may orinay not form pai-tol:I the framing and against which the ixing means bear. This piece Z may serve for one or more fixing means.

The xing means are situated mainly above the core` as shown in Figs. l to 9, in such a manner as to oppose a vertical or oblique rising ofthe core at the moment oit casting. Moreover, when the core is oit fairly considerable length, it is necessary to support it underneath in order to prevent it from giving away under its ovvn weight, and in this case one or more i'ixing means are placed at e, as shown in Fig. 8.

Figs. S and 9 are views oi a mold for a radiatorelement comprising a plurality of tubes. TheA core c is held in this example by a firing means compose-d of tivo Wires f bent as shown in said igures Vtor increasat the time of casting.

ing the bearing surface of the fixing means upon the sand. These Wires f are Jfastened by Welding `or otheriviseito metal plates p. This form oflixing means be located similarly to those hereinbeliore described, either above or below the core..

A The improved lixing means shown in Figs. 8 and 9 is illustrated by Way or example as comprising tivo wires, but this form of fixing means may comprise only one or any desired number ot Wires spaced uniformly or non-uniformly apart.

The improved xing meansfmay be bent at their ends as shown in Fig. el, either upwardly or downwardly, the bent portion entering the sand of the mold. ln this manner a greater resistance to the lateral shitting oi the core is obtained if required.

The dillerent constructions illustrated `in Figs l to 9 are given solely by Way 01"' example; all other constructions of the improved ixing means may be employed Without departing from the invention.

The fixing members are produced by bending, stamping, or molding', or generally by any `process Whatever, and are made of any metalWhioh ,Will not melt and which Vwill expand as little as possible in the mold These fixing members may consist of a thin strip ofsheet metal, tinned or not, or

ofrja seetionof a bary of lrectangular or other shape, or of one or more Wires. In the portions bearing upon the sand ol the mold, the section bar or the xvire constituting the fixing member, may be liattened .in order to provide a greater hearing surface upon the sand.

rEhe improved lixing meins allows ot greatly simplifying the nmlding or' parts vvith cores, such as for instance the clemcms ot multipletuhe radiators. la the mold in;=` oitl this lrind ot articles a single lifting strip. like the one shown in Figs 5 and d. erves as a substitute for a plurality ot or dinaryv core-supports.

Since the lixinameans is placed alongtho line et the joint ot the mold. and docs not pass either through the sand of the mold nor through the core. the ramming ol: the sand can be performed more easily than when ordinarv core-supports are employed embedded iu the sand oil the mold. Conscquently. the improved lixing means allows opt employing molding processes and mechanical rannning procel-sses Vwhich cannot he employed with the ordinary core-summits.

:Since the improved lixing means works iu tension. the quantity ot metal necessary to 'form 'it is smaller' than in the case oi au ordinary support Working in compression and bending. The metal ot the improved lining means welds better with the metal ot thc cast aricle, and the duid-tightness o' the latter is better. l

rPhe main technical results ol the use of the improved lixing means acording to this invention may he summed up as Vollovvs:

A sinn'iliiication ol the molding due lo the particular construction ol this improved lixing means.

Since the improved lixing means is not embedded in the sand ot the mold as is the case with ordinary' supports, molding proce and sand-rannning processes may he employed which are not possible `with the ordinary supports,

The ifi-shaped construction of thc improved fixing means assures a better centeringof the cores.

The metal ogt the improved iixing means n'orlrs in tension, and the core is held in place better.

rEhe section ol`A the improved fixing means may he smaller, and the metal of which the said means is composed Welds better with the metal o lf the cast article.

.ln the case ot' multiple tubes only one con tinuous iixing strip is necessary Where more than one ordinanv support would be rcrequired.

in order that the improved fixing means shall resist exclusively or almost. exclusively by tension, the thrusts exerted by the cores under the influence of the molten metal. it

vis sulhcient to give a rectangular shape to those portions of the fixing means Which are disposed between the points Where said ineens? fixing means bears upon tile sand oi the Inoirb'and tbe points where it bears upon the core.

lllie drawings sliow pipes whose area is circulaiin cross section; it mnst be understood liowefer that tbe cross seetion of tbe pipes ina be oi? any desired sliape or torni.

liavirfg thus deseribed my said invention what l. el im and desire to secure by Letters latent is jl. i ine-[nis ior inning ionndry cores in casting molds, consisting' oi a metal strip oit small section having straight portions adapted to be inserted between tbe parts oi.I tbe mold in the sand and bent portions between said st Jig-lit portions, said bent portions bei inn' adapted to bear against tbe surface ot the jcores `lor tbe purpose of resisting the tlirnst ot tbe latter by tension.

means for iising foundry cores in casting molds, consisting oit a metal strip el small section having portions adapted to bear against tbe sand oi.E the mold, portions adapted to bear against the cores, and straight portions between tbe points wliere tbe aforesaid portions are respectively in contact with the sand of tbe mold and witli tbe cores, iler tbe purpose of ensuring,` that tlie lining means will offer tensile resistance to tlie tlirusts ot tbe cores.

Si. il means ttor lining; 'foundry cores in casting molds, which consists oi a metal strip et small section so shaped as to be capable oi bein lreely inserted between the llalves oi tire mold and of bearing against tbe cores, tbe portions of said strip that are eemprised between tbe points intended to bear respectively against the mold and against tbe eores, being straight for tbe purpose oi? oil'ering tensile resistance to tbe thrusts et tbe cores.

el. il means tor lining; ii'oundry cores in ranting molds, consisting` oi" a strip composed-ot parallel wires and instal plates attached to said wires, said plates being designed to bear awainst the sand ot the mold.

e. Ji means tor ,fixing foundry cores in tasting molds, consisting oi' a metal strip ol small section adapted to be inserted between the halves oi tlie inold and to' bear against the eores, the ends of said strip being formed with books for entering the sand oi? one oi: tbe halves ol tbe mold.

(l. il. means 'for iixing foundry cores in casting; molds, consisting oit a tliin relatively narrow niatal strip, the bent portions oit said strip being adapted to bear against tbe veros, whilst tbe intermediate portions are adapted to bear against one of the halves ot the mold in the intervals of space between the cores.

7. A means for fixing foundry cores in nesting-molds eomprising a relatively narrow member having iiat portions adapted to be inserted between tbe mold parts, and an intermediate portion adapted to engage a core, and maintain the same duly positioned with respect to the molds.

8 ii means ior iixing foundry cores in fasting-molds comprising a plurality oi relatively narrow members having flat por tions adapted to be inserted between the mold parts, and intermediate portions adapted to engage a core above and below its axis whereby to maintain the saine suspended within the mold and spaced with respent to tbe walls thereof.

9. A means 'for fixing foundry tores in casting-molds comprising' a relatively narrow member, having fiat portions adapted to be inserted between tbe mold parts, means on said flat portion adapted to be anchored in the mold, and an intermediate portion adapted to engage a core and main tain tbe same duly positioned with respect to 'tbe mold.

l0. A means for fixing foundry cores in casting-molds, a relatively narrow member having a iiat portion adapted to be inserted between the several mold parts and extend across the same, and an intermediate portion conformed to and engaging tbe core and serving to maintain the same duly positioned with respect to the mold.

il. .A means [or fixing; foundry cores in casting-molds, a relatively narrow member having a flat portion adapted to be inserted between the several mold parts and extend across the same, and an angular intermediate portion engaging tbe core and serving to maintain the same duly positioned with respect to tbe mold.

12. A means for fixing foundry cores in casting-molds comprising a support composed of a plurality of parallel longitudinal members, and bearing members secured to said longitudinal members, said bearing members being adapted to bear against the surfaces of said mold parts.

13. A means for fixing foundry cores in casting molds consisting of a metal strip adapted to be inserted between the mold parts and to bear against the cores, and anchoring means at tbe ends oi said strip adapted to be embedded in tbe sand of one of said mold parts.

ln testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

LGIS COURTT.

TWitnesses t EUGENE WA'rrms, Gnonsns Yon.

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