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US Patent: 226,162
Compensating Errors in Screw Dividing Engines
Patentee: Samuel Darling (exact or similar names) - Providence, Providence County, RI USPTO Classifications: 33/19.1, 74/89.23, 82/110 Tool Categories: metalworking machines : indexers and dividers Assignees: None Manufacturer: Darling, Brown & Sharpe - Providence, Providence County, RI Witnesses: John E. Hall J. L. Ingraham	Patent Dates: Applied: Nov. 11, 1879 Granted: Apr. 06, 1880 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Brown & Sharpe Mfg. Co.

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