US Patent: 158,173 - Improvement in belt-shifters


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US Patent: 158,173

Improvement in belt-shifters

Patentees:

Amos W. Proctor (exact or similar names) - Billerica, MA

Charles H. Hill (exact or similar names) - Billerica, MA

USPTO Classifications:

Tool Categories:

woodworking machines : machine and tool cutters : cutter grinding

industrial machines : industrial machine mechanisms : industrial machine pulleys and belt drive mechanisms

Assignees:

Union Stone Co. - Boston, MA

Manufacturer:

Union Stone Co. - Boston, MA

Witnesses:

C. H. Stinchfield

Charles F. Arbott

Patent Dates:
Applied:	Nov. 13, 1874
Granted:	Dec. 29, 1874

Patent Pictures:

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Vintage Machinery entry for Union Stone Co.

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