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US Patent: 156,204
Improvement in pile-cutters
Patentee:
George H. Cavanagh - Boston, MA

USPTO Classifications:
83/743

Tool Categories:
woodworking machines : circular saws

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
S. B. Kidder
M. W. Frothingham

Patent Dates:
Applied: Sep. 17, 1874
Granted: Oct. 27, 1874

Patent Pictures:
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Description:
This saw is intended to be mounted on a scow, and its innovation is that it uses a previously-cut pile as a reference point for subsequent cuts, which allows the cuts to be all at the same height without further manual adjustments, even though the water level is changing with the tides.

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