US88425A - Improvement in flask for moulding- kettles - Google Patents

Description

No. 88,425, PATENTED MAR. 30,'11869.

' G. WALWOMHl FLASK PoR MOLDING KETTLBS,

dimmi time @anni ',(ltftae. l a- Wmop Mpenoso-,n vvALvvoirrn,Y or PEEKSKILL, NEW YORK.

Letters .Patent No. 88,425, lated Mafrch 30, 1869.

,IMPROVEMENT IN r'LAsK Fon MOULDING Kara-LES.

v *ww- The Schedule referred to in these Letters Patent and making part: of the trame.

To all whom it may concern:

Beit known that L'Gnonen WALwouTn, of'Peekskill, in the county ot'iVestchestel', and State of' New York, have invented a new and useful 'Improvement in Foundry-Flasks for Sugar-Kettles; and' Ido here- The' invention consists in .so forming the flask that,

the kettles may be cast right side up, (or as they stand when iu use.) instead of' bottom side up, as'they have hitherto been made, by which improvement they are .made with much lessy labor and risk, and whereby much more perfect castings, or kettles are obtained.

In the accompanying plate of drawings-i lFigure l represents a vertical section of' a flask constructed according to my invention. Figure 2 is a top view ofthe flask.

Similar letters of reference indicate corresponding parts.

A is the iiask, which is made in two parts, nowel and eope, as such flasks usually are. A is the nowel.-

B is the cope. l' The line o'f separation lis seen at C C, where the two parts are kept in place by steady-pins, or dowels, as seen in the drawings; and when the casting is made, thetwo parts are clamped together in the usual manner.

kettle involved a large amount of' labor in ramming so much unnecessary sand,and in handling the flask, the weight of which greatly increased the risk in making the mould. 4

But the additional labor and risk is not the principal Aobj eetionto the old method of moulding these ketties. l 1

In pouring the melted metal into a mould, it is well understood by founders, that all the impurities contained in the melt-ed metal, ascend to the top of the casting, as the' liquid metal ascends in the mould.

Consequently, in casting the kettle bottom side up,

the bot-tom of the kettle, which should he the soundest and most perfect part, is in fact the most defective; lIt is for this reason that cannon, or heavy ordnance,

is always cast in pits,'in an upright position, breech down, so as to insure solid iron, or metal, where solidity and strength are most needed.

A solid bottom in a sugar-kettle, (which is constantly being exposed to the extremes of'heat and cold,) is quitel as important.

Where the kettle is cast witlr the bottom up, it frequently leaks at first, or soon becomes useless, from the spongy nature of the metal.

By fbrming the flask of such shape and proportion, and, arranging the parts, or details of it, so that the kettle may be cast with the bottom down, or right side up, the labor is not only greatly lessened, but.

the risk of defective bottoms 4in sugar-kettles isavoided. The kettle is gated on the top rim, and the sprues7 are set in the projections E.

F represents the' wrists on the' nowel and ou the cope, by which they are handled or lifted by the crane.

G represents the cross-pieces in the cope, for sustaining the sand.

I claim as new, and desire to secure by Letters Patentf/ 1. The flask A, constructed as showuand described, for casting sugar-kettles, substantially as set forth.

2. The combination ofthe flask B, having the projections E, with the as'kA, substantially as and for the purpose described.

GEO. WALWORTH.

Witnesses: Y

S'LEPHEN LENT, W. vLABEE.

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