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US Patent: 2,479,536
Grinding apparatus of the abrasive belt type
Patentee: John A. Elmes (exact or similar names) - Beaver Falls, PA USPTO Classifications: 451/311 Tool Categories: metalworking machines : metal sanding machines Assignees: Ryman Engineering Co. - Ellwood City, PA Manufacturer: Ryman Engineering Co. - Ellwood City, PA Witnesses: Unknown	Patent Dates: Applied: Jul. 24, 1947 Granted: Aug. 16, 1949 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Ryman Engineeering Co.
Description: This patent provides an automatic belt tensioning mechanism.

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