|US Patent: 84,605|
|Improvement in Wrenches|
Baxter's Adjustable S-Wrench
||Dec. 01, 1868
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William Baxter Pat. Dec. 1, 1868
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|Adjustable S-Wrench consisting of two pieces mortised into each other, and connected with a left- and right-hand screw with a central knurl. With a graduated scale stamped on the side, the design could also function as an outside calipers.
Corresponding British patent GB-186803985 (i.e. 3,985 of 1868) was granted Dec. 31, 1868.
Improvements to the tenons were addressed in Baxter's July 17, 1883 patent (no. 281,432).|