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US Patent: 1,305,616
Combination differential direct-power drive and friction-clutch pulley
Patentee: Nelson Howard Norris (exact or similar names) - Renfrew, ON Canada USPTO Classifications: 475/269, 475/3, 74/10.52 Tool Categories: industrial machines : industrial machine mechanisms : industrial machine clutches agricultural : dairy machinery Assignees: Renfrew Machinery Co., Ltd. - Renfrew, ON Canada Manufacturer: Renfrew Machinery Co., Ltd. - Renfrew, ON Canada Witnesses: F. D. Vincent E. A. Wright	Patent Dates: Applied: May 13, 1919 Granted: Jun. 03, 1919 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Renfrew Machinery Co.

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