Woodworking – Dovetailing machine – Frusto-conical bit
Patent
1977-08-17
1979-08-07
Spruill, Robert Louis
Woodworking
Dovetailing machine
Frusto-conical bit
144 2R, 144136R, 144326R, 409206, B27F 104
Patent
active
041634659
ABSTRACT:
A router is mounted on the back of a support plate which can be raised or lowered to a precise adjusted position with respect to a base plate such that a dovetail cutting tool cuts precision dovetail joints in wooden workpieces. Other cutting tools can be employed for rabbeting, mortising, as well as for cutting square and round tenons to produce close fitting wooden joints.
REFERENCES:
patent: 125282 (1872-04-01), Gear et al.
patent: 2542615 (1951-02-01), Balazs
patent: 3223132 (1965-12-01), Erne
patent: 3238980 (1966-03-01), Goldstein
patent: 3306324 (1967-02-01), Lillywhite
patent: 3339601 (1967-09-01), Christman et al.
Bray W. D.
Chandler Charles W.
Spruill Robert Louis
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