US437732A - Core-support - Google Patents

Description

(No Model.)

B. A. SUMNER.

GORE SUPPORT.

Patented Oct. 7, 1890.-

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UNITED STATES PATENT OFFICE.

EDWARD A. SUMNER, OF DETROIT, MICHIGAN.

CORE-SUPPORT.

SPECIFICATION forming part of Letters Patent No. 437,732, dated October '7, 1890.

Application filed April 21, 1890.

To all whom it may concern.-

Be it known that I, EDWARD A. SUMNER, a citizen of the United States, residing at Detroit, in the county of lVayne and State of Michigan, have invented a new and useful Core-Supporter to be used in Casting Metal, of which the following is a specification.

This invention relates to core-supporting devices, and has for its object the production of a device by means of which the chaplet or anchor ordinarily used in holding a core is firmly and securely held in position during the time the molten metal is pouring into the mold and around the core, while at the same time it permits the necessary freedom of motion of the chaplet when the metal cools and shrinks.

In casting hollow articles of iron or other metal it is usual to fashion a core for the interior part, and in making up the mold this core is placed in the position that will be void of metal in the complete article, and as it frequently happens that the article which is being cast will when it is completed have a very large interior with thin walls and with only a small opening through the walls, it is necessary to support the core from below and hold it down from above until the liquid metal shall have surrounded it and set or hardened. The necessity of holding the core so that it will not rise and float in the liquid metal, or that it will not move sidewise and thus cause the side walls to be out of true proportion, is equally important with the mere supporting the core from below, so that the metal can flow underneath the core.

The chaplet or anchor ordinarily used is a small piece of wire, such as is shown in Fig. 5 of the annexed drawings, either with a struck-up head or a riveted head, or a bend or some similar formation to hold the chaplet from slipping through the sand when the flask is opened to remove the pattern after the molding-sand has been placed in the flask around it. This process is so well known that only a reference to it need be made, and the difficulties that accompany the use and adjustment of these chaplets as they are ordinarily used need only to be referred to.

In using my invention I do not necessarily use or employ other or different chaplets from Serial No. 348,933. (No model.)

those already used, as I design it to be used with any form of chaplet whatever.

In the drawings, Figure 1 shows a top View of a flask and a loop of a radiator-coil showing the position of the core of a large loop that is hollow through its entire extent. Fig. 2 shows a cross-section of the same, showing a view of the cross-bar with my invention at tached thereto. i Fig. 3 is a larger view of my invention, and Fig. 4 is a bottom view of the same part shown in Fig. 3. Fig. 5 are the forms of chaplets ordinarily used.

A represents the side walls of the flask or box used to hold and support the sand in molding. C O C are the ordinary cross-bars used to support the side walls and to retain the sand from falling out when the flask is opened out. l3 13 B are cross-bars, to which my invention is attached. These may be of any number suflicient to hold the core in place, and they may be used either above or below or both above and below the core.

In the cross-bar B, I form a slotD and place in it the trunnion of ahanger E. On the trunnion is a thread and setting-nut F. The hanger E is furnished with one or more chaplet-holding parts, according to the casting that is to be made in the flask with which it is used.

It can be easily and quickly removed and one of different shape or form exchanged for it, if desired. The dependent end or ends of the hanger are formed to secure any form of chaplet.

As with a flat plate G, a flat plate with a concentric side K, a narrow slit II, or a small round hole I, the slot H would be of the thickness of the wire to be used for the chaplet and the hole I would be of the diameter, and either of these forms would receive and hold a chaplet of the form J, (shown in Fig. 5,) while a chaplet of the form K would be held by pressure downward of the flat plate G on its upper side and would be supported against the plate G by the thin layer of sand underneath it.

A chaplet of the form shown at L would be supported and held in the same way as the chaplet K. lVith the form of the chaplet K there would be formed in the plate G a countersink to receive the riveted part of the chaplet above the head. The hanger E can be adjusted up or down in the slot D and can be turned at any angle, and when adjusted and arranged can be held firmlyin the selected position by means of the setting-nut F, and this enables me to place the chaplets readily and without great care or precision in the sand in their proper position with respect to the core, and after placing themladj ust the plates G over the top of them, so as to hold them firmly in position, and then set the hanger, and thus hold thechaplets and through them the core firmly from motion in any direction. v

The special form of hanger shown in the drawings is adapted for use in connection with the loop-core of aradiator-loop, and of course the shape of the hanger and the number of its depending chaplet-holding ends would vary with reference to the special work that it would be used with. So, too, the position of the hanger with relation to the cross-piece or the side walls of the flask would depend upon the special work to be done, as in some instances the hanger would be connected directly to the side walls rather than to the cross-piece, the essential requisite being that it shall be adjusted with reference to the sides of the flask or the cross-bar connecting the sides of the flask, and that it shall furnish a holding-plate of proper form and shape at the part coming in contact with the chaplet. The use of this adjustable piece enables me to use the same flask for different kinds of wo1k,as it is no longer necessary to make the tedious and accurate measurements between the core and the cross-bars that have hitherto been necessary.

Having thus described my invention, what I claim as novel, and desire secured to me by Letters Patent, is-- 1. In combination with a molders flask, a swinging hanger adjustable vertically by means of an elongated slot and a trunnion and a holding-nut, substantially as and for the purpose described.

2. In combination with a molders flask, a cross-bar secured therein, a swinging hanger adjustably held to said cross-bar by means of a trunnion and ho1ding-nut on one part and a slot on the other part through which said trunnion passes, substantially as and for the purposes specified.

3. A core-holder consisting of a chaplet, combined with a swinging hanger adjustable by means of a slot on one part, through which passes a trunnion on the other part, and a holding-nut by means of which the parts are held in position after adjustment, substantially as and for the purpose specified.

EDWARD A. SUMNER.

Witnesses: v

CHARLES H. Honens, CHARLES H. FIsK.

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