Claims
- 1. The method of making die castings of one metal with a row of spaced fingers of another metal in fixed integral relation which comprises mounting the fingers in slots of an elongated holder with portions of the fingers projecting beyond the holder, mounting the holder in a die of a casting machine having a molding cavity surrounding the projecting portions of the fingers, die casting metal around the projecting portions of the fingers to form a frame for the fingers, partially ejecting the casting from the molding cavity of the machine, supporting the holder of the partially ejected casting to prevent sagging of the casting, completely ejecting the casting from the molding cavity while the holder remains supported, and stripping the holder from the fingers to provide a finished casting with the fingers precisely positioned on the frame.
- 2. The method of making die castings of one metal with a row of spaced fingers of another metal in fixed integral relation which comprises mounting the fingers in slots of an elongated holder which are open on one side and on one end with the fingers projecting through the open ends of the slots while remaining flush with the open sides of the slots, mounting the holder in a die of a casting machine having a molding cavity surrounding the portions of the fingers projecting through the open ends of the slots, die casting metal around the projecting portions of the fingers to form a frame for the fingers, ejecting the casting and holder from the machine, and stripping the holder from the fingers to provide a finished casting with the fingers precisely positioned on the frame.
- 3. The method of making die castings of one metal with a row of spaced fingers of another metal in fixed integral relation which comprises mounting the fingers in slots of an elongated holder with portions of the fingers projecting beyond the holder, providing holes in the ends of the holder, mounting the holder in a die of a casting machine having a molding cavity surrounding the projecting portions of the fingers, die casting metal around the projecting portions of the fingers to form a frame for the fingers, opening the die of the casting machine, entering supporting pins through the holes of the holder to suspend the casting, ejecting the casting and holder from the machine, and stripping the holder from the fingers to provide a finished casting with the fingers precisely positioned on the frame.
- 4. The method of making die castings of one metal with a plurality of side-by-side rows of spaced fingers of another metal in fixed integral relation which comprises mounting the fingers for each row in the slots of elongated holders with portions of the fingers projecting beyond the holders, mounting the holders containing the fingers in spaced side-by-side relation in a die of a casting machine having a molding cavity surrounding the portions of the fingers projecting from the holders, die casting metal around the projecting portions of the fingers to form a frame securing the fingers in spaced relation in said rows, partially ejecting the casting from the molding cavity, supporting the holder to suspend the casting, completing the ejection of the casting while suspended from the holders, and stripping the holders from the fingers to provide a finished casting with the fingers precisely positioned in said rows.
- 5. The method of making die castings of one metal with a row of spaced fingers of another metal in fixed relation which comprises providing a rigid elongated holder with slots spaced along the length thereof which are open on one side and on one end, inserting putty in the slots, rocking the fingers into the slots against the putty, squeezing excess putty from the slots to seal the fingers in the slots with portions of the fingers projecting through the open ends of the slots, mounting the holder in a die of a casting machine having a molding cavity surrounding the projecting portions of the fingers and a portion of the holder, die casting metal around the projecting portions of the fingers and the said portion of the holder to form a frame for the fingers, ejecting the casting and the holder from the machine, and stripping the holder from the fingers to provide a finished casting with the fingers precisely positioned on the frame.
- 6. A method adapted for making relays for teleprinters and the like apparatus where electrical input produces mechanical movement which comprises mounting magnetic metal U-shaped fingers in spaced parallel slots of an elongated metal holder having ends beyond the slots and with bight portions of the U-shaped fingers projecting beyond the slots, providing a die casting machine with a molding cavity having opposed pockets, mounting the ends of the holder in said pockets to suspend the holder in the die cavity of the machine, die casting non-magnetic metal around the projecting bight portions of the U-shaped fingers to form a frame fixedly securing the fingers, opening the machine, suspending the casting from the holder to prevent sagging of the hot cast frame, and thereafter stripping the holder from the fingers to provide a finished cast frame with precisely projecting fingers.
- 7. The method of claim 6 wherein the bight portions include upstanding tabs, exposing all of the tabs and part of the bight portions of the fingers beyond the holder, and casting the non-magnetic metal around all of the tab portions and the exposed parts of the bight portions of the fingers.
Parent Case Info
This is a division of application Ser. No. 444,346 filed Nov. 24, 1982, now U.S. Pat. No. 4,540,966 issued Sept. 10, 1985.
US Referenced Citations (20)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2211176 |
Sep 1972 |
DEX |
Divisions (1)
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Number |
Date |
Country |
Parent |
444346 |
Nov 1982 |
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