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US Patent: 564,296
Magnetic chuck
Oakley S. Walker - Worcester, MA

USPTO Classifications:
147/5, 192/84.1, 269/8, 335/289, 409/903

Tool Categories:
metalworking machines : metal planers : metal planer chucks


O. S. Walker & Co. - Worcester, MA

J. W. Robertson
B. F. Curtis

Patent Dates:
Applied: Feb. 13, 1896
Granted: Jul. 21, 1896

Patent Pictures:
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"Vintage Machinery" entry for O. S. Walker & Co.
This patent covers what is believed to be the first magnetic chuck. Walker's design used an electromagnet, thus requiring electricity and wiring to the chuck. In 1935 a British patent, GB-429,199, was granted for the first permanent magnet chuck (see also its USA equivalent, 2,053,177).

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