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US Patent: 66,781
Making Metal Tools
Improved Hammer Head
Robert Black - Holyoke, MA

USPTO Classifications:
76/103, 81/20

Tool Categories:
woodworking tools : hammers
tool making : making hammers

Robert Black - Holyoke, MA
Martin Deviney - Chicopee, MA
John Murphy - Chicopee, MA

Not known to have been produced

J. B. Gardiner
Howard H. Hyde
F. M. Knowlton

Patent Dates:
Granted: Jul. 16, 1867
Antedated: Jul. 07, 1867

Patent Pictures:
Robert Black patent July 7, 1867
USPTO pdf tiff
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The patent describes a process of brazing a wrought iron hammer head to a malleable cast socket. Compare this to Henry Cheney's July 2, 1867 patent no. 66,298.

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