US Patent: 1,727,452
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| Expansive bit
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Patentee:
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| Carl A. Swenson (exact or similar names) - Rockford, IL |
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Patent Dates:
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| Applied: |
Mar. 12, 1928 |
| Granted: |
Sep. 10, 1929 |
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Patent Pictures:
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Jeff Joslin
Vintage Machinery entry for Greenlee Brothers & Co.
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Description: |
| An example of this adjustable bit has surfaced. One of the patent features is that the shaft the holds the adjusting worm wheel is eccentric, so that after the blade is adjusted to the position desired, turning the screw slot at the end of the shaft 1/4 turn locks the cutter tight in that position. |
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