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US Patent: 1,068,225
Drop-hammer roll-release mechanism
Patentee: Harry E. Derbyshire (exact or similar names) - Chambersburg, PA USPTO Classifications: 72/439 Tool Categories: metalworking machines : forging machines : drop hammers Assignees: Chambersburg Engineering Co. - Chambersburg, PA Manufacturer: Chambersburg Engineering Co. - Chambersburg, PA Witnesses: William H. Freet Sarah T. Frommeyer	Patent Dates: Applied: Nov. 01, 1911 Granted: Jul. 22, 1913 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Chambersburg Engineering Co.

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