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US Patent: 31,075
Machine For Grinding Heads of Wrenches or Other Articles
Patentees:
Loring Coes - Worcester, MA
Aury Gates Coes - Worcester, MA

USPTO Classifications:
451/237

Tool Categories:
woodworking machines : specialty machines : tool making machines
wrenches : wrench components

Assignees:
None

Manufacturer:
Unknown

Witnesses:
J. Henry Hill
Thomas Kinnicutt

Patent Dates:
Granted: Jan. 08, 1861

Patent Pictures:
L. & A.G. Coes Pat. Jan. 8, 1861
USPTO pdf tiff
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Description:
The patent describes holders aand connecting levers as components of machines to grind the heads of wrenches such as the Coes Screw Wrench.

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