US Patent: 2,868,090
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| Attachment for Internal Keyway Cutting and Slotting
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Patentee:
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| David S. McCullough (exact or similar names) - Racine, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 18, 1956 |
| Granted: |
Jan. 13, 1959 |
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Joel Havens
"Vintage Machinery" entry for Dumore Co.
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Description: |
| Arthur Middleton - patent attorney
This invention relates to means for using a reciprocating tool for such operations as internal keyway cutting, shaping, slotting, and nibbling. It is an object of this invention to provide an improvement over previously developed devices that offers greater flexibility of use for a wider range of work, avoids the necessity for heavy rigid frames by obtaining its rigidity through new design features, allows greater cuts in relation to its size and horsepower by providing an increased degree of rigidity between the tool and the work. A second object of this invention is to provide a compact portable device which will add a wide variety of internal keyway cutting and shaping to work done on a lathe, while the work piece is still retained in the same position in the lathe chuck in which its previous operations such as boring or turning were done. A third object is to provide a practically universal portable, shaper which can be readily carried to perform machining operations in place, including forming slots, developing flat surfaces in vertical and horizontal planes in a single set up, able to use either draw-shaping or push-shaping cutting strokes as may be desired and adaptable in its set-up to increase accessibility. Another object of this invention is to devise a tool capable of being mounted on such machine tools as milling machines and boring mills to convert their rotary spindle action to reciprocating tool use for precise shaping and slotting operations and with greater capacity than previously known devices. Yet another object is to devise a tool unit for a lathe or similar work-turning machine tool that performs a combination of turning or boring and reciprocating tool action with only one handling and one set-up of the work piece, at the same time increasing the assurance of accurate relationship between circular surfaces and slotted surfaces. |
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