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US Patent: 18,394
Sawmill
Band sawmill
Patentees:
A. W. Fox - Elmira, NY
James B. Drake - Williamsport, PA
Wooster A. Flanders - Troy, NY

USPTO Classifications:
144/208.1, 144/48.4, 83/814, 83/820, 83/859

Tool Categories:
woodworking machines : sawmills
woodworking machines : bandsaws

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Jefferson Fraser
Edward V. Coulion
Edward Thomas
Luther B. Wier
Daniel L. Kelly
James S. T. Fox

Patent Dates:
Granted: Oct. 13, 1857

Patent Pictures: [ 1 | 2 ]
USPTO pdf tiff
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Description:
This patent is notable because it is the first appearance of a weighted lever used to tension a bandsaw blade. This type of mechanism was considered the best way to tension blades until the development of coil springs that could maintain their stiffness over time. The weighted lever mechanism continued to be used on high end machines for many years after it had disappeared from smaller bandsaws.

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