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US Patent: 908,462
Oscillating mechanism for lap-grinding machines
Patentee:
John P. Hedstrom - Big Rapids, MI

USPTO Classifications:
451/157

Tool Categories:
tool making : making handsaws

Assignees:
Hanchett Swage Works - Big Rapids, MI

Manufacturer:
Not known to have been produced

Witnesses:
Louis B. Hanchett
Ray L. Swift

Patent Dates:
Applied: Feb. 29, 1908
Granted: Jan. 05, 1909

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Hanchett Swage Works

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