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US Patent: 57,107
Improved Screw Driver
Patentee: Cyrus Eversol (exact or similar names) - Commerce, MO USPTO Classifications: 279/83, 81/32, 81/63 Tool Categories: screwdrivers : screwdriver mechanisms : ratcheting screwdrivers screwdrivers : screwdriver blades Assignees: None Manufacturer: Not known to have been produced Witnesses: George H. Watson Carroll Moye	Patent Dates: Granted: Aug. 14, 1866 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin
Description: Cross tip style blade (Phillips style, well before Mr. Philips patented his design) as well as an external, double pawl, ratching mechanism.

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