Woodworking – Shaping machine – Grooving machine
Patent
1992-10-20
1993-12-28
Bray, W. Donald
Woodworking
Shaping machine
Grooving machine
144137, 144371, 409175, B27C 500, B27M 100
Patent
active
052730913
ABSTRACT:
The present invention provides an improved biscuit jointer which allows a ruler guide to be kept completely level during fine adjustment of the vertical position and angular orientation of the ruler guide with respect to a ruler and accurately abuts against a workpiece. The biscuit jointer of the invention includes: a circular cutter blade; a base accommodating the cutter blade; a housing containing a motor for driving the cutter blade and being slidable relative to the base; a ruler disposed on one end of the base to abut against an end face of a workpiece; and a ruler guide vertically slidable along the ruler. The ruler has a vertically extending slide edge plane on a predetermined end thereof, and the ruler guide has a linear guide on the predetermined end thereof, which slides against the slide edge plane. The ruler grade further includes a spur gear engaging with a toothed rack formed on the ruler, which allows vertical movement of the ruler guide along the ruler. A leaf spring applies pressure against the contact of the linear guide with the slide edge plane to secure the attachment of the ruler guide to the ruler. The biscuit jointer is further provided with a clamp to restrain the movement of the ruler guide relative to the ruler.
REFERENCES:
patent: 4858661 (1989-08-01), Bosten et al.
patent: 4858662 (1989-08-01), Bosten et al.
patent: 4858663 (1989-08-01), Bosten et al.
patent: 4913204 (1990-04-01), Moores et al.
patent: 4926916 (1990-05-01), Legler et al.
patent: 4947908 (1990-08-01), O'Banion et al.
patent: 4971122 (1990-11-01), Sato et al.
patent: 4977938 (1990-12-01), Greeson
Bray W. Donald
Makita Corporation
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