If you find a patent number or patent date by this manufacturer that is not on this
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Key to Links for Patent Information
USPTO = U.S. Patent Office .
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DATAMP = Directory of American Tool And
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on patents related to machinery and tools. A much easier user interface than the
USPTO's for finding information on machinery patents.
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2,345,069
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Mar. 28, 1944
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Collet chuck
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Ellsworth B. Phillips |
Los Angeles, CA |
This lathe collet chuck can be engaged or disengaged without stopping the spindle. It is designed to move the workpiece slightly outward (to the right) as the chuck is tightened, so that the workpiece will stay firmly against a length stop. Example bearing this patent number have been seen; the labels read, "Allison Chuck Products, Inc. / 413 W. 7th St. / San Pedro, Calif. U. S. A." |