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US Patent: 210,220
Improvement in boring machines
Patentee:
James Swan (exact or similar names) - Seymour, CT

USPTO Classifications:
74/842

Tool Categories:
woodworking machines : joint making machines : portable timber mortisers
woodworking machines : wood drilling and boring : portable timber mortisers

Assignees:
None

Manufacturer:
James Swan Co. - Seymour, CT

Witnesses:
F. A. Rugg
H. S. Halligan

Patent Dates:
Applied: May 25, 1878
Granted: Nov. 26, 1878

Patent Pictures: [ 1 | 2 | 3 ]
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Vintage Machinery entry for James Swan Co.
Description:
The focus of this patent is on a vertical rack which can be swung in, and automatically locked into position, to engage a pinion on the crank-handled driving shaft. This allows the operator to withdraw the bit from the work while continuing to crank in the same direction as while boring. See his later patent, 341520, for a rethinking of this device

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