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US Patent: 859,336
Double Acting Tool for Planers and Shapers
John Riddell - Schenectady, NY

USPTO Classifications:

Tool Categories:
metalworking machines : metal shapers : metal shaper tools
metalworking machines : metal planers : metal planer tools

General Electric Co. - Schenectady, NY

Not known to have been produced

Edward Williams, Jr.
Helen Orford
Robert C. Clapman

Patent Dates:
Applied: Dec. 03, 1902
Granted: Jul. 09, 1907

Patent Pictures:
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"Vintage Machinery" entry for General Electric Co.
My invention relates to double-acting tools for metalworking machinery, such as planers, shapers, etc., and has for its object to provide a simple double-acting tool, which may be readily connected to or disconnected from the ordinary forms of planers and shapers. Double-acting tools, or tools which cut upon both the forward and the return strokes, are used only for roughing out purposes, and must accordingly be replaced by a single-acting tool to finish each set-up of work and be reinserted again for each new set-up, and on account of the difficulty and the time consumed in making these changes in devices of this kind, as heretofore constructed, they have been used but rarely upon the larger planers and practically never upon small planers and shapers. My invention consists of a tool-holder provided with, a shank adapted to be held in operative position by the ordinary tool post of a planer or shaper head, the only changes required to adapt the ordinary planer or shaper for use thereof consisting in the provision of an attachment for reversing the position of the tool and a catch to hold the apron from outward movement upon the back stroke.

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