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US Patent: RE4,537
Process for Making Articles of Steel or Steel and Iron Combined
Improvements in the Manufacture of Edge-Tools and Implements
Samuel W. Collins (deceased) - Collinsville, CT

USPTO Classifications:

Tool Categories:

Collins Company - Collinsville, CT

Collins Company - Collinsville, CT

Oliver F. Perry
J. H. Bidwell
Albert L. Thayer
Sarah J. Simonds
J. E. Stuhr

Patent Dates:
Granted: Aug. 29, 1871

Reissue Information:
Reissue of 30,668 (Nov. 20, 1860)

Patent Pictures:
Collins mixed metal castings patent Aug. 29, 1871
USPTO pdf tiff
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Division of process patent for producing striking and edge tools like hammers, axes, etc. Refer to original patent (no. 30,668) for further information.

This process was used (along with parallel patent no. RE4,538) to produce Collins axes.

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