US Patent: 590,486
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| Screw Thread Gage
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Patentee:
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| Burnside Ellsworth Sawyer (exact or similar names) - Athol, MA |
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Patent Dates:
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| Applied: |
Oct. 20, 1896 |
| Granted: |
Sep. 21, 1897 |
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Joel Havens
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Description: |
| My invention is an improvement in. that class of screw-thread gages which consist of a handle and a series of toothed blades or gages proper which are pi voted to the end of said handle. The object of my invention is to provide a gage whose blades shall be better adapted than its predecessors for insertion in small and large threaded bores or sockets and for use in all other practically accessible places and shall include in the most compact and convenient form all the pitches in ordinary use. |
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