US673638A - Chill or mold for forming metallic castings. - Google Patents

Description

(No Model.)

J. DEEMER. FORMING METALLIC GASTINGS. tion filed m 1, 1900.

2 Sheets-Sheet ll CHILL 0R MOLD FOR jgqz.

Patented 'May 7, l90l.

WITNESSES J1. E A

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INVENTOR A TTOHNE Y N0. 673,638. Patented May 7, IQUI. J. J. DEEMER.

CHILL 0B MOLD FOB FURMINGNIETALLIC CASTINGS.

(Application flied May 1, 1900.) (No Model. 2 Sheets-Sheet 2.

INVENTOH VFW EM J W/TNES 8 ATTORNEY UNITE STATES ATENT FFICE.

JOHN JOSEPH DEEMER, OF CHESTER, PENNSYLVANIA.

CHILL OR MOLD FOR FORMING METALLIC CASTINGS.

SPECIFICATION forming part of Letters Patent No. 673,638, dated May '7, 1901.

Application filed May 1,1900. fierial No. 15,107. (No model.)

T0 to whom, it may concern:

Be it known that I, JOHN JOSEPH DEEMER, a citizen of the United States, and a resident of 610 West Seventh street, Chester, county of Delaware, and State of Pennsylvania, have invented certain new and useful Improvements in Chills or Molds for Forming Metallic Castings, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof, in which similar letters of reference indicate corresponding parts.

This invention relates to an improved chill or mold for forming steel or other metallic castings; and the object thereof is to provide an efficient substitute for the common sand mold which is formed within a flask which can only be used once and which is on account of its'frailty of composition destroyed by the action of removing the casting from the mold.

The invention is adapted for embodiment into various shapes whereby it is applicable for forming castings of any desired contour. It is susceptible of use for any number of times and it comprises in its construction efficient means, embodying removable plugs for rapidly cooling and shrinking the castings after they are poured, whereby the process of producing steel or other metallic castings is greatly facilitated and the cost of production is considerably lessened.

The invention will be hereinafter fully described, and specifically set forth in the annexed claims.

In the accompanying drawings, forming part of this specification, Figure 1 is a plan view of a chill, illustrating the application of my invention as a means for casting a crankshaft; Fig. 2, a vertical end elevation; Fig. 3, a vertical sectional elevation taken on a line 1 1 of Fig. 2; Fig. 4, a sectional plan view taken on a line 2 2 of Fig. 3; Fig. 5, a vertical sectional elevation, taken through the center, of achill constructed to form a plurality of car-coupler knuckles; Fig. 6, a plan view of for forming a crank-shaft, for instance, as illustrated by Figs. 1 to 4 of the drawings the chill embodies two rectangular blocks or sections Aand A and plugs B and B of solid metal, preferably cast-iron. The blocks A and A are of equal proportions, adapted to exact-1y register with each other, and they are respectively provided with a depression or groove, as a and a, of adapted contour in cross-section to shape one-half of the casting to be produced, and they exactly register with each other when the sections A and A are placed together in a manner common to the ordinary sand mold.

Leading horizontally through a squared opening which is formed by the two channels b in the respective inner faces, of the blocks A and A is the tapering plug B, which is square in cross-section and is provided with a vertical groove 6 across its inner end of semicircular contour. This plug abuts against the inner end of the similar tapering plug B, which leads horizontally through a squared tapering opening formed by the conjunction of the channels 12 in the blocks A and A and which is also provided with a semicircular groove 1) to complete, in conjunction with the grooves a and 01,, the formation of the recess adapted to shape the casting.

Leading vertically through the chill and engaging adjacent semicircular grooves in the sections A and A is a pouring-gate C, adapted for inlet of molten metal to the mold and which is composed of a tubular section of fire-clay or other suitable material.

.In the construction shown by Figs. 5 to 7 of the drawings I have illustrated a chill so formed as to produce a plurality of small castings-forinstance, four car-coupler kn uckles. In this construction the chill embodies an upper section or block D, a lower section D, and removable plugs E and E. Each section D and D is provided with suitablyformed recesses, as d and d of a contour adapted to shape the outside lines of the knuckle, which recesses are respectively of a height equaling half the height of the knuckle, and they exactly register with each other when the two chill-sections are placed together in a manner common to the formation of molds for castings, as will be readily understood by those conversant with the art of casting metals. The plugs E and E are so shaped in plan as to complete the contour of the knuckle lines, as shown at I, Fig. 6 of the drawings, whereby when said plugs are inserted through the centrally-formed openings and leading, respectively, through the blocks D and D the recesses to form the castings are completed. For inlet of molten metal to this form of chill I use a gate F, which embodies a fire-clay tube leading downwardly and centrally through the plug E and communicating with runners or channels 6, which lead to the respective recesses to be filled and are formed in the surface of the inner ends of the plugs E and E. These square plugs are made tapering, so that they may be more easily fitted to their respective grooves and when so fitted will be more easily put in position, held in position, and better prevent the escape of molten metal from the mold.

The plugs B B and E E are each supplied with a means for handling and removing them, as in tegrally-formed loops b and e and they are preferably tapered to admit of easily removing them from the connected blocksections after the metal is poured.

In the form of chill shown by Figs. 8 and 9 of the drawings I have illustrated the application of my invent-ion as a means for forming cylindrical shells. In this instance I use two metallic sections Gand G, supplied with suitably-formed recesses g and g and a single removable plug H, which may embody a looped metallic rod h and a tubular sand coating h. In this construction the gate or inlet is formed by means of the grooves g and g formed in the sections G and G, and projecting lugs g and g are extended within these said grooves to diminish the thickness of the metal stem after the casting is formed, whereby rapid contraction of the metal during the process of cooling the casting will sever the stem at its diminished parts and prevent injury to the body of the casting.-

Wherever it is necessary to form small openings through the castings, I employordinary sand cores, as J, (shown in Figs. 6 and f the drawings,) and they are held in place by means of suitable sockets formed in the chill-sections, as J.

In use the chill-sections may be held together by any suitable means, as clamps K, Figs. 1 and 2 of the drawings; but I do not confine myself to this specific means for fas tening; neither do I confine myself to the use of only two chill-sections, as it is obvious that under the scope of my invention I am entitled to construct the chill-sections in conformity with the requirements of the shape of the casting to be formed, which may require the employment of several chill-sections and a plurality of removable plugs.

The materials employed also may be varied in accordance with special requirements.

In the'operation of the invention-the several parts of the device are connected to each other as shown, for instance, by Figs. 1 and 2 of the drawings. The molten metal is then poured in through the gate 0 until the cavity which shapes the casting is entirely filled. Immediately or at a proper time thereafter, within the judgment of the operator, the plugs B and B are removed, which admits of inlet of air and rapid cooling and shrinking of the casting without danger or liability of its pulling apart, thus greatly facilitating the operation of producing, shrinking, and cooling castings.

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

1. In a mold for forming a plurality of metallic castings, the combination with metallic moldsections having interior formations which register with each other to partly form such castings; of removable core-plugs leading through the mold-sections from opposite sides, which plugs register with each other and are shaped to partly form the castings and have channels in their inner abutting ends which register with each other, and a pouringate leading to said channels, substantially as shown and described.

2. In a mold for forming metallic castings, the combination of metallic mold -sections having interior formations which register with each other to partly form such castings, sockets and cores held therein; with removable core-plugs shaped to partly form the castings and which lead through the mold-sections from opposite directions and abut against each other at their inner. ends, said plugs having channels. in their inner ends which register with each other, and a pouringgate leading to said channels, substantially as shown and described.

3. In a mold for forming metallic castings, V

the combination, with metallic mold-sections having interior formations which register with each other to partly form such castings, and a pouring-gate; of removable core-plugs leading through the mold-sections from opposite sides which plugs register with and abut against each other at their inner ends and are shaped on their sides and abutting inner ends to partly form the castings, substantially as shown and described.

In testimony that I claim the foregoing as my invention Ihave signed my name, in presence of two witnesses, this 25th day of April, A. D. 1900.

JOHN JOSEPH DEEMER.

Witnesses:

OLIVER BOOTH DICKINSON, ELIZABETH GARRETT.

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