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US Patent: 2,162,250
Clutch mechanism for tapping attachments
Patentee: George W. Emrick (exact or similar names) - Brooklyn, NY USPTO Classifications: 192/110R, 192/21, 192/66.2 Tool Categories: metalworking machines : drilling and boring : tapping heads and chucks Assignees: None Manufacturer: ETTCO Tool & Machine Co., Inc. - Brooklyn, NY Witnesses: Unknown	Patent Dates: Applied: Jan. 19, 1937 Granted: Jun. 13, 1939 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for ETTCO Tool Co., Inc.
Description: Improvements to make it easier to service the tapping-head clutch, whose friction surfaces must be replaced periodically.

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