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US Patent: 470,778
Attachment for Screwdrivers
Patentee: Lewis H. Boyden (exact or similar names) - Boston, MA USPTO Classifications: 81/453 Tool Categories: screwdrivers : screwdriver mechanisms Assignees: Herbert M. Rowell - Boston, MA Manufacturer: Not known to have been produced Witnesses: Frank G. Parker Edward S. Day	Patent Dates: Applied: Jun. 01, 1891 Granted: Mar. 15, 1892 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin
Description: Holding quill used to secure screws to the screwdriver bit.

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