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US Patent: 89,652
Improvement in self-oiling pulleys
Patentees:
Henry J. Colburn - Fitchburg, MA
James Goodrich - Fitchburg, MA

USPTO Classifications:
384/388

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

Assignees:
Rollstone Machine Works - Fitchburg, MA

Manufacturer:
Rollstone Machine Works - Fitchburg, MA

Witnesses:
E. G. Spaulding
Thomas H. Dodge

Patent Dates:
Granted: May 04, 1869

Patent Pictures: [ 1 | 2 ]
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"Vintage Machinery" entry for Rollstone Machine Works

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