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GB Patent: GB-186,602,001
Machine for cutting dovetail joints
Patentee:
Samuel Thomas Armstrong - New York, NY

USPTO Classifications:

Tool Categories:
woodworking machines : joint making machines : dovetailing machines

Assignees:
None

Manufacturer:
Thomas Robinson & Son - Rochedale, England

Witnesses:
Unknown

Patent Dates:
Granted: Aug. 02, 1866

Patent Pictures: [ 1 | 2 ]
From 1873 catalog
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"Vintage Machinery" entry for Thomas Robinson & Son
Description:
This novel and important invention uses helical saw blades attached to cutter blocks that rotate about 150 RPM to cut pins and tails. The dovetails could be through, half-blind or even full-bind. The machine's design demanded precise and heavy construction but the result was a dovetail more precisely cut than any previous machine-cut dovetails. We have not been able to find an equivalent US patent. In any event, the machine was a sensation at the Paris Exhibition of 1867. That machine was built by Thomas Robinson & Son of England and demonstrated by Mr. Armstrong himself. Robinson also imported the machines into the US and Canada.

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