Drilling/cutting bit, and method of making joint

Details Drilling/cutting bit, and method of making joint Drilling/cutting bit, and method of making joint

1994-07-15

1996-04-16

Bray, W. Donald

Woodworking

Process

Mechanical cutting or shaping

144134R, 144136R, 144150, 144219, 144220, 144240, 144365, 144353, 407 30, 407 54, B27M 100, B27C 100

Patent

active

055073310

ABSTRACT:
A drilling/cutting bit for forming joints in wooden members to be connected together by a coupling. The bit simultaneously forms a smaller width slot, a larger width slot, and a curved transition between the slots.

REFERENCES:
patent: 803295 (1905-10-01), Laskowitz
patent: 1316959 (1919-09-01), Kieser
patent: 1328430 (1920-01-01), Hathaway
patent: 1409258 (1922-03-01), Stenger
patent: 2459534 (1923-06-01), Wilker
patent: 3606916 (1971-09-01), Day
patent: 4470733 (1984-09-01), Marques, Jr.
patent: 4593734 (1986-06-01), Wallace
patent: 4741370 (1988-05-01), Heaton

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