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US Patent: 137,631
Improvement in machines for turning heads of bobbins
Patentee: Christopher M. Spencer (exact or similar names) - Hartford, CT USPTO Classifications: 144/46, 29/27B, 29/27R Tool Categories: woodworking machines : wood lathes woodworking machines : specialty woodworking machines : spool or bobbin machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Henry C. Robins C. N. Shipman	Patent Dates: Applied: Jan. 07, 1873 Granted: Apr. 08, 1873 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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