US Patent: 525,386
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| Expansible bit
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Patentee:
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| Ellsworth Ford (exact or similar names) - New Haven, CT |
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Patent Dates:
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| Applied: |
Mar. 09, 1893 |
| Granted: |
Sep. 04, 1894 |
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Jeff Joslin
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Description: |
| From the 1902-11-27 issue of The Iron Age, page 78: "Peck, Stow & Wilcox Company, Southington, Conn., and 27 Murray street, New York, have just brought out Ford's patent Clark expansive bit, here shown. Fig. 1 illustrates the bit ready for use. Fig. 2 being an enlarged outline view of the working parts, indicating the method by which the cutter is prevented from slipping in use, even when farthest extended. The large screw fastens the cutter as in the original Clark and other expansive bits, a slight turn of the small screw against the rear end of the clamp greatly increasing the pressure of the clamp against the cutter...." |
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