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US Patent: 590,486
Screw Thread Gage
Patentee:
Burnside Ellsworth Sawyer - Athol, MA

USPTO Classifications:
33/199R

Tool Categories:
metalworking tools : machinist tools : measuring tools : thread gages

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Fannie C. Clark
Mary E. Lawyer
Edgar V. Wilson
Frank A. Aldrich

Patent Dates:
Applied: Oct. 20, 1896
Granted: Sep. 21, 1897

Patent Pictures:
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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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