US1226123A - Casting-mold. - Google Patents

Description

A. P. SCOTT.

CASTING MOLD. APPLICATION FILED FEB. I. ma.

mm Kay 15, 1917.

2 "KITS-SHEET I.

a anvnfoz $1M W142 A. P. soon.

CASTING MOLD.

APPLICATION FILED FEB. I, ISIS.

1,226,123. Patented 15,1917.

2 SHE MEET 2- 2 d ,7? nvenl'oz 7 UNITED STATES PATENT OFFICE.

ARTHUR P. SCOTT, OF CHICAGO, ILLINOIS, ASSIGNOR TO CHILE EXPLORATION COM- PANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

cAs'rIne-mom.

1, 1916. Serial No. 75,477.

To all whom it may concern:

Be it known that I, ARTHUR subject of the King of Great Britain, residing at Chicago, county of Cook, and State and particularly to molds for casting magnetite electrodes, which are so constructed as to facilitate the removal of the electrodes from the molds, and also the production of electrodes of uniform properties.

Molten. magnetite, suitable for the production of magnetite electrodes, can be produced, for example, by melting the ore in an electric furnace. The molten magnetite, when ready for pouring, is at a temperature of about 1590 C. In order to produce from thismolten magnetite electrodes which will be free from defects, it is important that the molds be capable of quick handling in order that the electrodes may not remain therein longer thanvdesired, and in order that the electrodes may be stripped from the molds with facility. In the production of. hollow electrodesfand even in the production of solid cast electrodes, it is often important that means he provided for insuring thatthe top of the electrode shall not harden before the remainder, and for maintaining a body of molten magnetite extending above the top of the mold until a portion of the magnetite has solidified to form a shell within the mold. I

The novel mold. of the present invention is of particular value for such purposes, and enables hollow electrodes to be produced therein, and even solid electrodes, in a particularly advantageous manner.

The invention is illustrated in the accom- P. Soo'r'r, a.

panying drawings showing one embodiment thereof, and the invention will be described more particularly in connection therewith.

In the drawings, Figure 1 shows the mold in perspective, and in a horizontal position, supported by the yoke, parts of which have beenbroken away;

Figs. 2'and 3 are respectively bottom and top views of the mold;

Ijigs. at and 5 show the parts of themold separated Fig. 6 is a sectional View of the detachable top or extension; and a Fig. 7 shows the mold in an uprightposition, supported in the yoke, and with the top extension thereon.

The mold, as shown is made up of the two parts 1 and 2, held together by pivoted bolts 3 and keys 4. The mold parts are, with advantage, made of cast gray iron.

By care ful foundry work the interior surface can be- Speciflcation 01' Letters Patent. Patented llay 15, 1911 V Original application flied November 17, 1915, Serial No. 61,904. Divided and this application filed February made sufficiently smooth to eliminate all machine work except at the joint planes. This advantage over a machined surface, being more resistant to the molten magnetite, and

havingless'tendency to warp, as well as being less expensive to produce. v

For convenience of handling, the mold is mounted on trunnions, to permit of its rotation'in a vertical plane. These trunnions 5 are shown as arranged one 011 each of the mold parts. The mold is carried by a suitable conveyer such as an overhead trolley and chain block having a supporting yoke in which the trunnions are mounted. his yokeis made up. of an upper frame member 7 and hook members 6.

A pouring tunnel or top 8 forming an ex tension of the mold, is arranged thereon, so that it can be removed by sliding and with a shearing effect upon the'niaterial within the mold. In the production of hollow magnetite electrodes it is advantageous to connect the pouring funnel or top '8 to the supporting yoke, so that it will be removed when the mold is inverted. without the nece'ssity of removing it"as'a separate operation. I

' In using the mold for'the production of magnetite electrodes, it is usually pro-limited to about 350 C. so that the chilling i-tl'ect upon the magnetite will not be too i'e:it,':ui l 1 so that the cracking of the electro e will be prevented. In practice, the moldmay also be 'given a. coating of linie or other suitable 1 material, to reduce; he tendency ofthe magiiet'ite to stick thereto. f Where it is desired to produce hollow electrodes, )thje magnetite ispoured from the mpld'p'ftei'nshell'of solid magnetite of the desired thickness hiis" been formed therein. The'mountifig'of the mold on trunnions fa ci'iiti tes-"theiquiek pouring of this molten magnetite. I

fliteasting electrodes, and particularly hollow magnetite electrodes, in an open in'o'ld, .it -was' found difficult .to obtain; an eleetrod mterva idisc 'harged; This'left-a anon-6t theinolt'en in-' i r pidiy hi d even-he inlfli'e thieknes'slofjth'e' wall, and

settinjE'upYstriI-ins'. which often caused failare 8 desired to retain the moitenlnag j in the" moldfor fil-rtheti Eiifids 0f the upping-his "-i1lus't connected' b "af ehei in which t'geimolfl -r 1 "automatically rein" ed'w I molq ris the pivotal=support 3 of the in d eel nf nite? the invention, iwhichucomprisesya' inol e with a, erfect nec k. In the time f llowed: or a; solid "wall ot magne t 'rrthemoldmvithick skin rough before the interior each 'ofsaid means optimise d sheann onel"endi' eti 81 vmold is of considerable thickness, it may with advantage split diagonally along its major axis so that the electrode can be removed without; binding. With thinner electrodestliere is less dnn'ge'rof binding at the'comers. and the use of a diagoniilly'split mold may not necessary- It will of. course. beunderstood that the size and 'pro ortions of- .the -m old'- :can 'be varied, and :1; et its details of construction can also be 'varied, withoujt departi from t i iiv'hich' "handled and 'tiik'ennpa'rt jand ib: I

eanbe readil whichapfr'ov "te el i-Qn u motel mold for onstin "des' lieviiig'piyots'ion Whic d 15 1? h k shs11'hasiomedin v 1d. -and*me ans ifoi-{she'an shellat the time" of "poor- --A metal 'mold' onei stin'g' magnetite, i lity of parts'r'eiiidily ther, a'trunnion on parts orming a' trensverse axis-on which said oidumay be swung'tq flour; out the-liquid 1 ag netite I after a. shell as-fo meuwith' endautomatio o in 1- A. metal meld,

f' AQm ldnf mi ting/ m t t i f I moild bem'giof cast iron and "split diaigonally- 1 into two parts, readily detachable mean 9 securing said pertstog'ethenu trunnio e ,-1n' .fsc th s; rocedure. f1l1'e keys formed within the mold and a pouring fnnextension thorvof, and means for removing nel fm-nnng all uxtenslon of said parts and sand top nntonmtlcnlly when the mold 1s m- I'Qll'lOVilblG therefrom \vlth a shearlng moveverted 1n szu'd support; substantially as de- 0 ment. svriheii.

5 A mold structure .c .in1prising a divided In testimony whereof I affix my Signature.

mold, means for pivotally supporting the i same, a rei'novable top section forming an- ARTHUR P. SCOTT.

Gopicl of this pat ent may be obtained for the cents each, by addressing the "commissioner of Inhntn. Washington, D. 0. Y

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