US503290A - Foundry-flask - Google Patents

Description

UNITED STATES PATENT OFFICE.

PETER B. MCGREGOR, OF IIILLBURN, NEV YORK.

FOUNDRY-FLASK.

SPECIFICATION forming part of Letters Patent No. 503,290, dated August 15, 1893.

Application led March l1. 1893.

To MZ whom it may concern:

Be it known that I, PETER B. MCGREGOR, a citizep of the United States, residing at Hillburn, 1n the county of Rockland and State of New York, have invented certain new and useful Improvements in Foundry-Flasks, of which the following is a specification.

My invention relates to that class of frames in which the meeting ends are separable f rom each other, and it consists of corner pieces so constructed that they may be applied to said meeting ends so as to connect them lirmly together or readily removed to permit the ends to be separated.

My invention further consists in means for connecting the opposite sides of the frame by an intermediate strip as fully set forth hereinafter and as illustrated in the accompanying drawings in which Figure l is a plan in part section of a molding flask having separable sides and embodying my invention. Fig. 2 is a part longitudinal section on the line 2-2, Fig. l. Fig. 3 is a plan view showing the device as applied to a frame which is open only at one corner. Fig. 4 is an edge view of the frame. Fig. 5 is an enlarged section showing the corner piece and its application to the corner of the frame. Fig. 6 is a section on the line 6-6, Fig. 5. Fig. Z is a perspective view of the corner piece, and Fig. Sis an enlarged sectional view of the socket piece.

The frameAhas four sides a, a' a2, a3 which may be separate from each other as shown in Figs. l and 2, or they maybe all bent up of a single piece, as shown in Fig. 3. At each corner, when the frame is made of four pieces or at the single corner, when the frame is made of a single piece as shown in Fig. 3, the meeting ends are beveled at angles of forty-five degrees so that they can be brought close together, and they are there secured by means of the clamping device B. This device B consists of a corner piece composed of two plates 5, 5, at right angles to each other and adapted to t against the meeting sides of the frame, with lugs 6, 6 (one, two or more as may be required) extending between the plates 5, 5, and in the end of each of the meeting sides of the frame is ont one, two or more recesses n, the recess in one side piece being in line with that of the other, and both. so arranged as to re- Serial No. 465,593. (No model.)

ceive one of the lugs 6, which, when the corner piece is applied to the corner of the frame as shown in the drawings, extends inward beyond the inner line of the frame and in said lng is a recess adapted to receive a key C. The key is straight, or tapering, or as best shown in Fig. 6 may consist of two pieces S, 9 with beveled meeting ends so that when one is driven down onto the other, this action will tend to bind the key firmly in place and draw the corner piece close to the corner of the frame and bind the parts together.

Under some circumstances, the corners of the frame might be held by the friction between the key and the face of the side piece, but in other instances, this would not be sufticient and I, therefore, provide each plate with one or more lugs, 7 adapted to enter a recess in the corresponding face of the side piece, so that when the corner piece is applied as shown in Fig. 5, the key C will hold the corner piece close upon the meeting corner of the frame, While the lugs '7 Will prevent either side piece from being drawn longitudinally away from the piece. By this eonstruction, I am enabled to bind the side pieces of a frame as firmly together as if they were riveted, and at the same time, when it is necessary to knock down or break up the frame, the withdrawal of the keys will be snicient to disconnect all parts from'each other.

In many instances, it is desirable to apply handles to the corners of the iiask, and to this end I provide each ot' the corner pieces B with a lug 10 having a recess v/ adapted to receive a movable bar or handle X, or the bar Orhandle maybe securely fastened to the corner piece. In either case, the removal of the corner piece also removes the handle so that the side pieces of the frame may be compactly stowed together.

It is sometimes desirable especially in the cope of a molding flask, to subdivide the frame with one or more central pieces or strips D. To this end, I provide the said strips with a dove-tailed projection 13 at each end, and I secure to the inner face of each of the side pieces maa socket piece E, consisting of a plate of metal of a Ll-shape, the inner edges being beveled to fit the dove-tailed projection 13 of the strip D. The socket piece E may be bent np from a single strip or it may be a solid piece with a bevel edged socket u as shown in Fig. 8. In either case, it is riveted to the inside of one of the sides ot' the frame.

While I have referredr to the frame as being the frame of a molding fiask, it may be the frame of any material intended for any purpose, wherever it is necessary to connect the corners of the frame together by devices adapted to be removed and replaced.

Without limiting myself to the precise construction and arrangement of parts shown, I claim as my invention- 1. The combination with the meeting sides of a frame having corresponding recesses e of a corner piece having two plates at right angles to each other,'and lugs extending bei tween the plates and recessed to receive a key, substantially as set forth.

2. The combinationwith the separable sides of a frame having each one or more notches in the end, of a corner piece consisting of two plates at right angles to each other with one or more lugs extending between the plates, and having recesses to receivea key, and projections 7 on the inner faces of the corner piece, substantially as and for the purpose set forth.

3. The combination with the meeting sides of a frame having each one or more recesses, of a corner piece having two plates at right angles to each other, with one or more lugs between them recessed to receive a key, and a key consisting of two sections 8, 9 with beveled meeting ends, substantially as set forth.

4. The combination with the meeting sides of a frame having notches or recesses, of a corner piece consisting of plates at right angles to each other, with lugs adapted to the openings formed by the recesses, the said corner pieces having handles connected therewith, and keys for securing the corner pieces,

substantially as set forth.

5. The combination of themeeting sides of a frame having notches, and corner pieces having lugs and openings to receive keys, and socketed projections to receive handles, substantially as set forth.

In testimony whereof I have signed my name to this speciiication in the presence of two subscribing witnesses.

PETER B. MOGREGOR [L. s l

Witnesses:

GEORGE W. CONKLIN,

W. STUART Ron.

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