Woodworking – Process
Patent
1978-01-03
1979-09-25
Spruill, Robert Louis
Woodworking
Process
144 87, 144144R, 1441445R, 144323, B27C 510
Patent
active
041687302
ABSTRACT:
Disclosed is a tool set for forming dovetail joints including elongated dovetail and pin template plates and dovetail and pin bits. The dovetail plate has a plurality of laterally-extending slots opening through a long edge of the plate, the slots having opposed parallel edges. The dovetail and pin bits are each provided with a bearing about their respective shanks. The elongated pin template plate has a plurality of longitudinally spaced openings each having opposed edges angled to converge toward one another at the same angle as the angle of the cutter of the dovetail bit. To form a dovetail joint using the kit, the dovetail template is disposed over the end edge of a joint member and the dovetail bit is passed through each slot with its bearing engaging the opposed edges of the slot to guide the bit whereby through dovetails are cut in the end of the joint member. The dovetailed member is then disposed over the end edge of the adjoining member and the pin locations are scribed onto its end edge. The pin template is then located over the scribed edge and the angled edges of its openings are aligned with the scribed lines. The pin template bit is inserted into the opening and the pins are cut, the bearing on the pin bit shank engaging along the edges of the openings to accurately guide the pin bit.
REFERENCES:
patent: 463861 (1891-11-01), Gilliland
patent: 1651510 (1927-12-01), Carter
patent: 1751816 (1930-03-01), Hunter
patent: 2764191 (1956-09-01), Hartmann
patent: 3057383 (1962-10-01), Waite
patent: 3223132 (1965-12-01), Erne
patent: 3332462 (1967-07-01), Williams
patent: 3547171 (1970-12-01), Jacumin
patent: 3878875 (1975-04-01), McCord, Jr.
Rockwell International Catalog; "Router/Trimmer Accessories", p. 73.
Stanley Tool Company Catalog; "Stanley Router Accessories", p. 29.
Bray W. D.
Spruill Robert Louis
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