US530319A - beokwith - Google Patents

Description

' (No Model.) 2 Sheets-Sheet 1.

A. K. BEGKWITH. MOLDER'S APPARATUS.

No. 530,319. Patented Dec. 4, 1894.

(NoModeL) 2 Sheets-Sheet 2.

A A. K. BEGKWITH.

MOLDER'S APPARATUS.

No. 530,319. Patented Dec. 4, 1894.

F HII I k (Ill/III/I/ll Witn assas:

, UNITED STATES PATENT OFFICE.

ARTHUR K. BEOKWITH, OF. DOWAGIAG, MICHIGAN, ASSIGNOR. TO FRED E.

LEE, OF SAME PLACE.

MOLDERS: APPARATUS.

SPECIFICATION forming part of Letters Patent No. 530,319, dated December 4, 1894.

Application filed r 1 894- Serial No. 511,188. (No modeld To all whom it may concern! r 5' Be it known that I, ARTHUR K. BEOKWITH, a citizen of the United States, residing in the city of Dowagiac, in the county of Cass and State of Michigan, have invented certain new and useful Improvements in Molders Apparatus, of which the following is a specification.

My invention relates to molders devices and more particularly to apparatus for forming molds. My invention relates still more particularly to a means for adapting the matchplate for convenient use with a hinged flask so that. the parts of the mold shall move on their hinges, come together properly and make a perfect mold.

The objects of my device are to adapt a match-plate, as above stated, for use in an ordinary hinged molders flask and to so'construct a match-plate that the cope will hinge upon it and also to provide a flask with the match-plate which can be used continuously for a longtime without becominginjured by rust, accumulations of sand, or any slight warpingof the plate; also toinsure, in a hinged flask used with a match-plate, a perfect mold. I accomplish these objects by the devices shown in the accompanying drawings, in

which- Figure 1 represents a top plan view of my improved apparatus before the sand is packed in it. Fig. 2 represents a side elevation of the same,the dotted lines indicating the manner of opening the flask. Fig. 3'is a sectional view on line 33 of Fig. 1 through the apparatus when it is empty. Fig.4 is a sectional view on the same line after the flask has been filled with sand and the match-plate, B, has been removed, showing the device ready for easting. Fig. 5 is an enlarged detail of one of the hinges of the flask and the match-plate; and Fig. 6 is an enlarged detail of the flask hinge with the match-plate removed.

Similar letters of reference refer to similar parts throughout the several views.

In the drawings, I have shown my invention adapted for use in connection with an ordinary iron hinged flask such as is used for easting stovetops and the like.

A represents a drag of the ordinary hinged flask.

Ais the cope.

In the construction of myJimproved apparatus for forming molder smolds, thecope and drag of the flask are placed securelytogether and clamped in that position, when a hole of suitable size is drilled through as at e, in Fig. 6 which shows the two parts brought close together. The flask must be so constructed as to insure afit in the hinges and at the same time fit at least at one other point opposite the hinges. It is better to construct 'the flask so that'it will fit in the hinges and at two other points opposite. This is done by forming small pins, or lugs, 2,4, on both the cope and drag at such a point that they willcoine opposite and rest upon each other, the pins, '6, appearing in dotted lines in Fig. 1 (two of them more clearly in Fig.2) which conveys the idea. This insures easily a fit for the parts of the flask which causes them tocome solidly and firmly together and accumulations, as rust and sand, on the edges of the flask do not affect their coming together or their proper fitting upon. the plate. The two pins, t', t, engage the plate-firmly both above and below and if the plate is slightly warped, it does not affect the fit of the plate on the flask. These lugs, 71, should be about one-sixteenth of an inch thick so that there will be an open space between the drag and the cope, when the plate is out and the flask closed and between the drag and plate and the cope and plate, when the plate is in the flask at all points except at the hinges and lugs, as shown in the illustration. v This will always insure perfect work. When the parts are properly drilled in this way, both hinges are drilled by a drill in the same line with each other, and the match-plate, B,is placed between the cope and the drag, the pin, D, on the drag fitting into the slot, n, in the plate which keeps the plate from moving sidewise. On the upper and lower sides of this match plate at each point where the hole, e, had been drilled, the halves of pins of the exact size of the drill used in drilling the hole, e, are placed exactly opposite each other to engage the parts of. the hole, 6', which are'separated. This, it will be seen when the parts are placed together, forms the hinge on which the cope will lift ofi from the plate on the upper side and on the lower side of which the plate will lift from the drag, if the pattern permits of the hinge movement. The pins, D, fitting into the female portion, or slots, D, cause the various parts to register in the other direction,the plate as well as the cope being made to register with the pins, D, which project up from the drag.

The hinges of the flask, G, G, when the plate is inserted between will of course be liftedapart, the exact thickness of the plate because the half pins, 6, which together just fill the hole, a, when the flask is closed are separated by the thickness of the plate and the cope and drag are resting on these pins in the depression, e, (as indicated in Figs. 2, 3 and 5) but the parts will be compelled to match on account of the pin, e, fitting into the parts of the hole, e, which keeps the plate from moving forward and back.

On the plate, B, the parts of the pattern, 0, are formed one part above and the corresponding part below, so that the mold will be formed in the cope and in the drag as is usual with a match-plate, and when the plate is removed the parts will fit together ready to pour the casting, as indicated in Fig. 4, suitable sprues being placed and gates being formed in the mold by the pattern.

When my improved mold forming apparatus is in use, the parts are placed together (as indicated in Figs. 1 and 2) the whole flask being inverted, the sand is packed in the drag, when the whole device is tipped right side up and the cope is rammed full of sand. When this is done, the cope is raised up, as indicated by dotted lines in Fig. 2, when it hinges on the upper half of the pin, 6, and by raising it up carefully and steadily, the upper parts of the hinges, G, drop into the lower parts of the hinges, G, when the cope can be supported in any convenient manner, as by resting it against a molders strike, and the plate, 13, can then be raised up the under part of the pin, e, forming a hinge in the lower half of the hole, 6, which will keep the plate frommovingendwise. Theslots,n,fittingover the pin, D, keep the plate from moving sidewise. Should the pattern be too straight in the drag or so shaped that it cannot be rolled out on the hinges, the plate may be lifted squarely off. In this case, the slot, n, in the match-plate, B, on the opposite side from the hinges should fit the pin, D, next to the flask as well as on both its sides. When it is necessary to draw the match-plate squarely off, the plate should be held against the pin, D, when it can be drawn without the possibility of damaging the mold, when it may be raised out and set to one side. When the plate is removed, the cope may be closed on the hinges, G, G, and rest on the lugs, t', 'i, (see Fig. 2) which hinges and lugs were before separated by the thickness of the match-plate. The hinges, G, G, and the pins, D, will cause it to match and bring the parts exactly together' to form a'perfect mold in the usual way, as indicated in Fig. 4.

The plates, B, with the patterns and molds for the gates formed thereon are formed in the first instance by shaping the patterns in the molds with the ordinary patterns to be formed and making gates as if to make the casting in the usual way. When this is done, the cope is separated from the drag a short distance equal to the desired thickness of the plate evenly all the way around, or may be open farther on one end than on the other so long as a line through the hinges, e, e, on

the plate passes through the center of the circle through which the end of the flask is opening and the cope hinges on the pins, e, 6. When the metal is poured in, it will form the plate with thepattern upon the upper and under side. When the plate is formed in this way and a perfect plate is secured, it may be used repeatedly in the process. I am aware that it is the usual method of forming a matchplate to separate the drag and cope, but I point out definitely the method involved to securethe correcthinging. Thisconstruction of the match-plate in this way that I indicate makes it possible to handle it very easily without injuring the mold, because the pin portions, e, register with the holes, 6, and it acts as a portion of a hinged flask. The parts being bound together makes it possible to use the mold on the hinge principle which is very convenient and easy to manage and my improved method causes the parts to exactly register.

The device is of great value in casting castings'of the ordinarysize and is of still greater value in casting numerous small castings because when a mold is shaped in this way, a

plate similar to the plate, B, is secured with a number of patterns, 0, upon it. A large number of small castings can be cast at once with great ease and facility.

My improved match-plate can be readily adapted to other styles of flasks than the one shown in the drawings; and other styles of hinges at e, 6, may be used as the plate may be made with a U-shaped hinge the thickness of the plate which will fit in the depression, 8', in the drag. The pin, 6, in that case, would be left whole and fastened to the cope to fit into the U-shaped hinge in the plate, as seen by dotted lines in Fig. 5, or this order could be reversed the pin being below and the U shaped part above.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a molders apparatus, the .combination of a drag, A containing depressions, e; cope, A, containing depressions, e, the cope and drag being hinged together at G, G; a match-plate, 13, between said parts having on its edge toward the hinged side of the flask, the half pins, e, e, parallel to the axis of the hinge of the flask and adapted to flt in half round depressions, e, e, on the cope and drag so that all of the parts act as though hinged together, the cope hinging on the match-plate and when partly raised hingin g with the drag, andtheLmatch-pIate hinging to the drag below so that the match-plate can be separated and handled similarly to the cope and not interfere with the registeringof the hinge flask when the mold is made and the cope and drag are close together, all substantially as described for the purpose specified.

' 2. In a molders device, apparatus consist ing of a drag and the cope hinged together with notches therein to receive projections on the match plate; and a match-plate with projections thereon toward the hinged side of the flask to engage both the cope and the drag to cause them to register as in an ordinary match-plate, the projections on said matchplate engaging notches in the flask so that the match-plate can be lifted off as though it were hinged, for the purpose specified.

3. In a molders apparatus, the combination with a molders flask, of a match-plate having projections on its upper and under sur-' face; and corresponding depressions on the drag and cope to engage said projections, the projections, the depressions being curved to hinge together so that the cope can be raised from the match-plate as on a hinge and the match-plate from the drag as on a hinge, substantially as described for the purpose specified.

{1. In a molders apparatus, the combination in a hinged flask, of the cope and drag with independent hinge bearings thereon between them; a match plate between the cope and drag of said flask with projections thereon toward the hinged side of the flask to engage the aforesaid hinge bearings so that in operation in raising the cope, it will hinge first upon the projections of the match-plate and by continuing this motion, carry the hinge of the flask together so that the hinge of the flask shall support the cope and the matchplate can be lifted out as on a hinge, the proj ections of the match-plate engaging the cope and drag so that they will have the same relative position when closed as though they were resting upon the hinge of the flask, for the purpose specified 5. In a molders apparatus, the combination in a hinged flask, of a cope and drag, having lugs, t, t, fitted together so as to rest upon their hinges and on the said lugs, '6, -i, which are situated opposite each other on said cope and drag; a match plate between said cope and drag with a hinge connection on its upper and lower surfacetoward the hinge side of said flask, hinged together as described so that the cope will hinge upon the match plate and be supported upon the hinges and on its lugs, 11, t', on said match plate so that the hinge of said cope when raised from the match plate shall engage the hinge of the drag below and so that the match plate shall restupon the hinge between the match plate and drag on its under sideand upon the lugs, '5, 2', upon the drag, substantially as described for the purpose specified.

6. In molders apparatus, the combination of a drag with projecting lugs on its upper surface; a match plate adapted to rest upon supported by the lugs of the cope resting upon the lugs of the drag, as Specified.

7. In a molders device, the combination with a hinged flask, of a match plate between the cope and drag; a hinge connection on the upper surface of said match plate with the cope above, said connection situated toward the hinge side of the flask so that the cope can be raised from the match plate and its hinge be allowed to engage with the hinges of the drag and separate from the match plate so that the match plate can be removed without entirely separating the cope and drag, for the purpose specified.

, 8. In a molders device, the combination of a drag, A, having the hinge portion, G, a depression, e, toward its hinge side, pins, D, D, on the hinge side of said flask and opposite said hinges, lugs, t, opposite the hinge side of the flask; a match-plate, 13, provided with a hinge portion, e, 6, toward the hinge side of said flask slots, n, adapted to engage said pins, D, D; the cope, A, provided with a hinge portion, G, to engage the hinge portion, G, of the drag below; a depression, 6, to engage the hinges, e, of the match-plate below; lugs, 11, q opposite the similar lugs on the drag below; and slots, D, D, adapted to engage the pins, D, D, on the drag below, all united and co-acting together, substantially as described for the purpose specified. 9. In a molders device, the combination of the drag and the cope having oppositely facing lugs, i, 2', the said cope and drag being adapted to rest upon each other at the hinges and on the oppositely facing lugs, 71,6, to leave an open space at other points around the flask; and a match plate to be introduced between the cope and drag of the flask to be engaged on its hinges and by the lugs, t', only, to leave a space at other points so as to insure a proper fitting of the parts of the mold, for the pur-- pose specified. In witness whereof I have hereunto set my hand and seal in the presence of two witnesses.

ARTHUR K. BEOKWITH. [L. s.]

Witnesses: LENA LAIZELERE, J. O. BEORAFT.

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