US1225707A - Apparatus for molding wax and other materials. - Google Patents

Description

A. McD. GRAY.

APPARATUS FOR MOLDING WAX AND OTHER MATERIALS.

APPLICATION flLED AUG. 7, l9l3.

m25gmm I Patented May8,1917.

- wmww 'ing APPARATUS FOR MOLDING WAX OTHER MATERIALS:

Specification of Letters Patent.

Patented. May 8, 191?.

Application filed. August 7; 1913. Serial no. 'rssaaa.

To all whom it may concern:

Be it known that I, ALANSON McD. GRAY, a citizen of the United States, residing in Elizabeth, in the county of Union, State of New Jersey, have invented certain new and useful Improvements in Apparatus for Molding lV-ax and other Materials, of which the following is a specification.

This invention is an improvement upon the organization described in UL S. Letters fgatgnt, No. 653,285, granted to me July 10,

The invention contemplates the use of molding plates set up in series in alternation with hollow chilling plates in which a coolmedium is circulated.

In the accompanying drawing:

Figure -1, is a side elevation somewhat diagrammatic Fig. 2, a transverse section on line A, E, Fig. 1: and Fig. 3, a plan view indicating the heating pipes of a cap that is to be disposed over the top of the assemblage of molding and chilling plates.

1 may be an ordinary hydraulic cylinder;

' 2 its ram; 3 an abutment and 4, 4, the side rails of an ordinary filter press.

The molding plates may be open castings composed of vertical end parts 5 connected by a bottom portion 6 and divided into two compartments by a central vertically disposed 7 On such molding plates are formed ears suspended upon the parallel side rails 4. The end portions 5 of each plate are, as

seen in Fig. 2, extended somewhat above Y the upper face of the partition piece 7 The molding plates are closed at the sides by the chilling plates arranged in alternation with the molding plates. These chilling plates maybe castings of rectangular shape conforming generally to the rectangular outline of the molding plates. They have end portions 9, 9, corresponding with the upward extension of the parts 5 of the molding plates. Each chilling plate is formed on opposite ends with ears 12, 12, (similar to the ears 8 of the molding plates) by which it is carried upon the side rails 4, see Fig. 1.

The sides of the chilling plates form, where I the two kinds of plates are assembled in alternation, the closures for the ordinarily open sides of the molding plates. The upper edges of the sides of the outer chilling plates 8 by which the plates are of the series of plates disposed in alternation are in plane with the tops of the end extensions so that when the two series of plates are set up by the ram there is a surrounding curb or flange. The melted paraiiin wax may be supplied from cocks 14, 14 and will fill the mold cavities of the molding plates.

The foregoing is all fully disclosed in-the Letters Patent above mentioned, as is also a means of circulating the cooling medium,

such as cold water or reIrigerated brine,

through the chilling plates.

. The cooling fluid is supplied to each of the chilling plates by a flexible connection 15 connecting its bottom to a main supply pipe 16. The outlet pipes 17 also are connected to the bottoms of the chilling plates and through them the fluid is discharged into a-trough 18, located beneath the apparatus. This arrangement of the cooling fluid connections is elaborated and claimed in a copending application filed by me August 3, 1916, under Serial Number 112,942.

Experience has shown that in operating the system of the patent, the wax at the; tops of the molding plates solidifies in a porous or spongy form, or at least lacks the homogeneous solidification that characterizes the cakes of wax in the lower parts 0 the mold cavities and that this objectionable feature is removed by the use of the following means.

This feature of this invention consists in applying heat to the tops of the series of mold cavities so that the waxor other material will settle solidly and chill uniformly throughout the entire section of the various molding plates. This plan may best be carried out by providing what may be termed hot caps that may be shallow inverted troughs of sheet metal, fitting within the curb formed at the top of the assemblage of plates and carrying within it a heating coil or coils 20. The hot cap, as illustrated, which extends substantially the length of the assemblage or series of plates, is for convenience formed in two sections 21, 21, each suspended by appropriate cables running over pulleys and carrying counter weights 2, so that they may readily be thrown up or lowered to operative position, The mold ing plates may be filled when the hot caps are elevated. 23 indicates diagrammatically a steam inlet pipe branched to the steam 1 from the outer ends of the two coils there are steam discharges or I claim: v 1. An assemblage of molding and chilling plates arranged in alternation and heating caps adapted to cover. the top of suchassemblage of plates.

outlets 24:, 24.

2. An assemblage of molding and chilling plates'arranged in alternation, heating caps adapted'to cover the top of such assemblage plied to the heating caps whereby the latter may readily be elevated to inoperative position or lowered to operative position over the assemblage of plates.

In testimony whereof, I have hereunto subscribed my name. ALA- NSON M01). GRAY. Witnesses: FLORENCE MEIS ER',

HELEN DE More.

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