US Patent: 2,940,784
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| Precision threaded adjustment
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Patentee:
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| William B. Fell (exact or similar names) - Rockford, IL |
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Patent Dates:
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| Applied: |
Jun. 06, 1956 |
| Granted: |
Jun. 14, 1960 |
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Jeff Joslin
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Description: |
| "My invention relates to improved level adjusting screw means for very fine setting of a precision level in a portable level base or in a fixed support on a machine or instrument equipped with a level, the adjustment involving a differential threading rate between a sleeve that is threaded in a hole in the frame of the level and a hollow screw that is threaded inside the sleeve and is fastened to the base or support..." |
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