US763959A - Flask. - Google Patents

Description

No. 763,959. PATENTED JULY 5, 1904,

W. L. CASADAY.

FLASK.

ABPLIOATION FILED JUNE 4, 1903.

N0 MODEL. SSHEETS-SHEET l.

No. 763,959. PATENTED JULY 5, 1904.

W'. L. GASADAY.

FLASK.

APPLIOATION FILED JUNM, 1903.

N0 MODEL. 3 SHEBTSSHEBT 2.

No. 763,959. PATENTED JULY 5, 1904. W. L. GASADAY.

PLASK. APPLIGATION FILED JUNE 4, 1903.

N0 MODEL. 3 BHEBTB-SHEET 3.

WWW I 5 0/ Zdheqa J f 22.

Patented July 5, 1904.

UNITED STATES PATENT OEEIcE.

WVILLIAM L. CASADAY, OF SOUTH BEND, INDIANA.

FLASK.

SPECIFICATION forming part of Letters Patent No. 763,959, dated July 5, 1904.

Application filed June 4, 1903. Serial No. 159.991. (N0 model.)

To all whom it may concern.-

Be it known that I, WILLIAM L. CAsADAY, a citizen of the United States, and a resident of the city of South Bend, in the county of St. Joseph and State of Indiana, have invented certain new and useful Improvements in Molders Flasks or the Like; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates more particularly to improvements in molders flasks adapted to use in making chilled castings. Heretofore in making chilled eastingsas, for instance, plovpoints'it has been the custom to insert within the drag or cope a follower of 'wood or other material which supports the bar or other shaped iron forming the chill during the ramming of half the mold and which is removed prior to completing the mold.

The object of this invention is to dispense entirely with the follow-er and to enable the drag and chill to be constructed integrally, thus dispensing with several unnecessary operations and movements in preparing molds and proportionately facilitating the work while affording a better mold and a more satisfactory chill.

The invention consists in the matters hereinafter described, and more fully pointed out and defined in the appended claims.

In the drawings, Figurel is an end elevation of a device embodying my invention, showing the cope secured in operative position upon the drag. Fig. 2 is a side elevation thereof. Fig. 3 is a bottom plan view of a pattern used in preparing molds and plow-points. Fig. 4 is a top plan view of the same. Fig. 5 is an enlarged top plan view of the drag, showing the same constructed to mold a plurality of articles at one and the same time. Fig. 6 is a section taken on line 6 6 of Fig. 5. Fig. 7 is a section taken on line 7 7 of Fig. 2. Fig. 8 is a bottom plan view of the cope, showing part of the sand removed. Fig. 9 is a top plan View of the drag and chill on one side,

showing the pattern removed and on the other showing the pattern still in place. Fig. 10 is a detail perspective of a part of one of the chills carried on the drag and illustrating the sectioning of the same.

In said drawings the flask shown is one constructed particularly for the casting of chilled plow-points, though obviously the invention may be applied to molding chilled castings of any desired kind. The flask as a whole is constructed, as shown, of cast metal, and the drag A is constructed in two parts a a, each comprising a side wall and part of the end walls and adapted to match together, as shown in Fig. 5, and to'be rigidly connected by means of the plate (0 riveted thereon, and at the lower end extending outwardly, providing a flange a", by which the drag may be readily lifted. Each of the lateral halves of the drag in the construction shown is designed to afford a separate mold fora plow-point, and the side Walls thereof are suitably shaped to conform approximately to the shape or contour of the top of the plowpoint,as shown in Figs. 5 and 8, and the land-side edge thereof. Each of said drag-sections is provided with an integral inwardly-directed flange 6* at its top shaped to conform to the contour of the edges of the article to be cast (in this instance a plow-point) and extending from end to end of each of said drag-sections and positioned to afford a support for the rear extremity of the point, and the cutting edge thereof issup i ported upon a chill-bar B or B, Which,as shown, are integrally connected at one or both ends with the drag. If preferred, said chillbar may be cut across at one end, as indicated at 7), to permit the same to yield slightly under the expansion due to the heat of the molten metal when poured into the mold. Preferably if the chill is cut across it is reduced in thickness on the under side, providing a V-shaped transverse groove which cuts through the up per surface of said chill-bar at a point near the rear end thereof. WVhen said drag-sections are connected together, as shown in Fig. 5, the chill-bars B B lie close together, affording longitudinal central support, on each of which the pattern rests in molding and which contact with metal in the mold in casting.

The cope C of course corresponds in shape and size with the drag and on its under side is shaped complementally therewith, so that when placed in position, as shown in Figs. 1, 2, and 7, the same lies closely thereon, aflording a close joint. At the rear side of the drag outwardly-turned knuckles I) are provided, ad apted to be engaged by and form a support for complementally-curved hooks or lugs c on the cope, as shown in Fig. 8, and together therewith forming a separable hinged joint. On the front side of the drag is a projecting plate 1), adapted to receive the outwardly and laterally directed dowel c of the cope and acting, together with the flanges, to bring the cope and drag into register in molding and to enable the same to be returned into exact register after the mold has been opened for the purpose of removing the pattern.

The operation is as follows: The patterns, which, as shown, are plow-points, (indicated by 1),) are placed in position upon the internal flanges of the drag, as, shown in Fig. 7, but do not contact therewith enough to form any material chill in the casting While the part to be chilled in the casting is rested on the chill-bar. The cope is then placed in position, filled, and rammed, after which the flask is inverted and the drag is rammed. The flask is then returned to its normal position, the gates constructed, and the cope opened to permit the removal of the patterns, leaving a part of the chill-bars projecting into the mold. The flask is again closed and the metal poured therein through the gate provided for the purpose in the usual manner. Inasmuch as the edge of the article to be molded rests for its entire length along the chilled bars B or B, said contacting portions of the castings are chilled in the usual manner, the extent of said chill depending upon the extent of the contact of the casting therewith. Obviously, inasmuch as the chill-bar is a part of the drag, the tendency to mutilate or deface the mold when inserting the chill-bar is entirely obviated, and also, inasmuch as the chill-bar is immovably connected with the drag, it follows that the same must at all times hold exactly the same relative position with respect to the drag and the casting, thereby insuring uniformity of the chill both with respect to extent and hardness not otherwise obtainable.

While I have shown a flask adapted for the molding of plow-points, it is obvious that the flask may be constructed for other patterns of any desired kind or shape, and the chill may be otherwise arranged and connected with the drag than as shown in the drawings, and many details of construction may be varied without departing from the principles of my invention.

I claim as my invention- 1. The combination With the drag and cope of a molders flask, of a chill-iron rigidly secured in one of the same and adapted for con tact with the metal in the mold, and an inwardly-directed flange adapted to partly support the pattern in molding.

2. In a molders flask the combination with the drag, of a chill rigidly secured therein and affording a part of the mold, and an inwardly-directed flange forming a continuation of said chill.

3. In a molders flask the combination with the drag, of an integral flange extending around the same and acting to support the pattern in molding, a part of said flange forming a chill-bar.

4. In a molders flask the combination with the drag, of an inwardly-directed flange corresponding in contour with the edges of the articles to be molded, a part of said flange forming a part of the mold and comprisinga chill-bar.

5. The combination with a metallic flask comprising a metallic drag and cope each formed to conform to the shape laterally and longitudinally, of a plurality of like patterns, of a flange extending partly around one of the same comprising a support for the pattern in forming the mold and a central chillbar extending longitudinally in the drag and rigidly connected therewith adapted to contact with the metal in molding.

6. The combination with a metallic flask comprising a metallic drag and a cope each formed to conform to the shape laterally and longitudinally of a plurality of like patterns, of a central chill-bar extending longitudinally in the drag and rigidly connected therewith at its ends and upon which the pattern for a part of its length is supported in forming the mold.

7. In a molders flask the combination with a metal drag shaped to conform longitudinally and laterally with a plurality of the patterns to be molded, of integral bars supported at their ends therein comprising the chill-bar.

therefor and each adapted to support a part of the pattern during the molding operation.

8. A drag for the purpose specified comprising a plurality of cast sections rigidly connected and each adapted to conform laterally and longitudinally with the contour of the articles to be molded, integral inwardlydirected flanges at one side and end of the drag adapted to project beneath the patterns during the molding operation and a chill-iron permanently secured thereto and shaped to conform to the article to be molded.

9. A drag for the purpose specified comprising a plurality of like sections or castings rigidly connected at the ends, an inturned peripheral flange, integral chill-bars connected LOO v i i l l With said flange and extending centrally through the drag and plates rigidly connecting said drag-section at the ends and provided with outwardly-turned flanges for manual engagement.

10. In a molders flask the combination With a drag; of inwardly-directed means carried on the drag and acting to partly support the pattern and a chill-bar integrally connected

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