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US Patent: 17,951
Joiner's Plane Clamp Lever
Patentee: Thos. D. Worrall (exact or similar names) - Lowell, MA USPTO Classifications: 30/489 Tool Categories: woodworking tools : planes : plane adjustment mechanisms : plane cutter adjustments woodworking tools : planes : plane cap irons woodworking tools : planes : plane lever caps Assignees: None Manufacturer: Not known to have been produced Witnesses: C. M. Alexander Johns Hollingshead	Patent Dates: Granted: Aug. 04, 1857 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Reynolds
Description: A lever arm and screw are used to secure the the cutter in planes. A T-shaped strap is secured to the cutter to cooperate with the lever clamp.

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