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US Patent: 104,931
Heading Wrench Bars
Improved Machine for Forging the Heads of Wrenches
Aury Gates Coes - Worcester, MA

USPTO Classifications:

Tool Categories:
woodworking machines : specialty machines : tool making machines


A. G. Coes & Co. - Worcester, MA

W. W. Rice
William H. Hamilton

Patent Dates:
Granted: Jul. 05, 1870

Patent Pictures:
A.G. Coes Wrench Bar Header Pat. July 5, 1870
USPTO pdf tiff
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The machine is a major revision of the specialized drop forge patented by Loring and A.G. Coes July 31, 1860 (Patent NO. 29360). The patent includes a complete revision of the bottom anvil section, makes provision for adjusting for wear and clearing of trimmings and scale, and introduces the use of chilled cast iron for several wearing portions of the mechanism.

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