US Patent: 835,111
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| Tapping Apparatus
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Patentee:
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| William Nicholson, Jr. (exact or similar names) - Wilkes-Barre, Luzerne County, PA |
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Patent Dates:
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| Applied: |
Dec. 22, 1905 |
| Granted: |
Nov. 06, 1906 |
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Patent Pictures:
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Joel Havens
Vintage Machinery entry for W. H. Nicholson & Co.
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Description: |
| Abstract:
This invention relates to mechanism for tapping screw-threaded holes in metal blocks.
Claim:
In tapping mechanism, the combination, with a tap-holder provided at one end with a socket for engaging with a supporting-spindle and having a guide-socket at its other end, of a tap having an integrally-formed . |
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