Woodworking – Shaping machine – Grooving machine
Patent
1997-06-09
1999-02-02
Bray, W. Donald
Woodworking
Shaping machine
Grooving machine
1441545, 144371, 409182, 30374, 30376, B27M 100
Patent
active
058652302
ABSTRACT:
A plate joiner including a fence support, a drive, and a fence system. The fence support includes a cutter which is arranged and configured to protrude through a cutter slot in a contact surface to make a plunge cut into a surface of a workpiece. The drive is arranged and configured to rotatably drive the cutter through a motor. A preferred fence system includes includes a trunnion which pivotally couples the front fence to the fence system and, at any selected distance from a top face of the workpiece to the fence, maintains a constant distance from the top face of the workpiece to the cutter as the front fence angle is adjusted. A preferred fence system also includes an angle segment member, which has two slots used to position the fence in two ranges of fence angles. A preferred plate joiner is configured, preferably employing an adjustment screw and guide pins, for substantially continuous adjustment of fence height while restraining lateral and tortional movement of the fence and providing an accurate measure, preferably employing a height gauge, of the height of the fence from any point in the thickness of the blade at any fence angle. A preferred plate joiner includes a cutter plunge system arranged and configured, preferably employing a safety lever which physically excludes a larger blade than is conveniently housed at a forward release position, to provide a plurality of release positions that reduce the distance traveled in making a plunge cut for a smaller blade and to prevent a blade from protruding from the tool in a release position.
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Clowers Earl R.
Smith John C.
Bray W. Donald
Porter-Cable Corporation
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