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US Patent: 173,439
Improvement in cutter-heads for planing-machines
Patentee:
Edwin Benjamin (exact or similar names) - Chicago, IL

USPTO Classifications:
144/224

Tool Categories:
woodworking machines : machine and tool cutters : cutterheads

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
G. L. Chapin
O. H. Adix

Patent Dates:
Applied: Mar. 18, 1875
Granted: Feb. 15, 1876

Patent Pictures: [ 1 | 2 ]
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Description:
Concave caps with dovetail fastenings for holding the knives to the head. The design is an improvement on the inventor's patent 142,669.

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