US769959A - Apparatus for molding sash-weights. - Google Patents

Description

PATENTBD SEPT. 13, 1904.

J. E. PRICE. APPARATUS FOR MOLDING SASH WEIGHTS.

. APPLICATION FILED MAR. B, 1904. .1370 MODEL.

Patented September 13,;359Ua E. Pl-llUl l "SFUHATTlVtNOOGA, 'lENIl ESSEE.

tormiz'lg' part of Letters Patent No. 769,959, dated. September 13, 190%.

appiicmion filed March 8, 1904. fierial N0. lQ'LlOfi. (N0 model.)

il ornmtion 4,; would end to out the sash-cord and which ordinarily result from the use of metallic chills 'e eonn'nonlv employed in the n1annhts. the invention is to prot i the;- objects in vim-m as roinaitor appear the inhe hovel construction anti. of parts; hereinafter fully desvrihod, illus :atod in theaccompanyingdrawpointed oat it the zip- I mg understood. that mone; size, nor details of the structure in:

" K211 departing; on: the

' olthe advantages of the inbores arrai'iged in Fig. 2 15 a 1 do their connect" perspective View ed $1,542}, npnort for is a detail parapet wow-ores,

W roforenceare employed provided with siiiitable openings through which the pattern extends. The sand is then rammed around the pattern and after the gates or otherportions oft/he mold are properly iormeclthe patterns. are withdrawn through the openings in a one of the flask and metallic chills are introduced for the for inationof the corchattaching eye at the end of the Weight. The construction of the eye end of the weight is such teat the metallic chill is necessarily-made in two pieces and a; a result a fin or sharp projection will he formed at the eye and not removed by hand-dressing will tend to out the sash'cord, and hand-work is objectionable on account of the expense.

in carrying out the present invention the principal object is to providefor the former tion of the eye ends of the Weights without danger of the formation of projections or the like so that too Weight is in m; iition forthe market as soon as it is removed im the moloh The flask 1 is of the usual character and provided with end plates 2, having apertures 23 through which the patterns introduced, the patterns being of any ordinary type and provided, preferably, with projections for the t'orniation of the gateways through which the metal run. After the sand has been prororly rammed around the patterns and the latter have been withdrawn lohgitndihally through the openings in the end-0t the flask an eyecore 3 is introduced through each of openings and projects into th end oi. ih 'lhe G""-(.()!G if; provided with an outer if 5-, which limits the of Ell the shape of the core, which is clearly in Fig. 4:, is a are to .nrnwzm'eye l in; perfectly smooth Wall; to whzeh the erd n W he fastened without cutting v 'llheeyecores are made by suitable molding machines and'balted in the manner usually practiced in the formation ot small cores, this well-known process being; carried on at very small expense. t

the metal poured into the mold, anger oi thecoroshe' forced from ion and where chills are used they-are "linarily (ronlined in plaee by rigid looking?"- bars or similar' devices carried by the end plate or by the stationary portions of the flask. This method of fastening them could not be successfully used with baked sand cores, as the latter under pressure of the metal would in many cases be broken. In order to secure the cores in position, an auxiliary plate is employed at each end of the flask. T hese plates are provided with pointed spurs 6 at their lower edges, the spurs being forcedinto the floor atsome distance from the end of the flask, and to the top of each of the removable cores is secured a clip, which extends over and partly embraces theapertured end plate 2, so that the board will be held a fixed distance from the end plate. Between the end plate and the board sand or similar material is introduced and rammed in order to hold the cores in place and forming a more or less yieldable backing for the cores, so that they may be moved slightly when subjectedto the action of the metal, but without danger of breaking. After the metal has cooled sufficiently jacks or other hoisting devices are placed under the flask and the latter is raised, breaking the cores, the flask being removed in the usual manner and the sash-weights left in the sandfor subsequent removal, the process being completed when the sprues are re moved:

It is obvious that the invention may be applied to the formation of various other articles, and it is to be. understood that the application of the invention to the manufacture of sash-weights is merely typical.

Having thus described the invention, What is claimed is l. The combination with a flask having pat,- tern-receiving openings at its opposite ends, of a sand-core member adapted to said openingaand a yieldable supporting means for said core member.

2. The combination with a flask having an 6. The. combination with a flask having an v end opening, of a core, a detachable auxiliary plate, and a sand cushion between the plate and core.

7 The combination with a flask having an end opening, of a core mounted in said opening, a detachable plate, means for connecting the same to the end wall of the flask, and a sand cushion between the plate and core.

8. The combination with a flask,-hav-ing an end opening, a core disposed within the opening, a removable plate disposed at a short distance from the end of the flask, engaging spurs carried by the plate, and a sand cushion be-- tween the plate and the core.

9. The combination with a molding-flask, having a wall provided with a core-receiving opening, a core therein, of a detachable backing-plate separate from the molding-flask, and means for supporting the same in position at 3 sliort distance from the vertical wall of said as t.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

JONATHAN E. PRICE.

W'itnesses:

J. H. JooHUM, Jr., J. Ross (JoLnoUN.

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