Work holders – Work-underlying support – With work-stop abutment
Patent
1995-07-27
1998-02-10
Watson, Robert C.
Work holders
Work-underlying support
With work-stop abutment
B23Q 302
Patent
active
057160457
ABSTRACT:
Disclosed herein is a universal precision positioning jig for woodworking and other operations that is of lightweight and efficient design and that has micro positioning capability. The disclosed positioning comprises a carriage riding on elongated planar bearing plates on a fixed base. Two bearing plates are located at 45.degree. angles on one side of the base and are used in conjunction with a positioning mechanism located on an opposite side of the base for clamping the carriage to the base. The carriage is of lightweight, double hollow construction. The positioning mechanism utilizes complementary toothed racks for fixing the carriage to the base. A hinged swing rack mounted to the base engages a toothed rack on the swing rack with a toothed rack on the base, and is clamped into the engaged position using primary and secondary clamping levers. The secondary clamping lever is used to sustain general positioning of the carriage while allowing micro positioning. Micro positioning is accomplished with a micro position adjustment knob that controls the longitudinal position of the swing rack and the carriage when engaged with the swing rack. The primary clamping lever is used to securely clamp the carriage to the bearing plates on the base for cutting operations once micro positioning is accomplished. A novel rotating scale is used to meter the micro positioning, and multiple templates on the carriage with formulas for intricate cuts are used for general positioning.
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Taylor Design Group, Inc.
Watson Robert C.
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