Woodworking – Process – Mechanical cutting or shaping
Patent
1989-08-04
1990-06-12
Bray, W. Donald
Woodworking
Process
Mechanical cutting or shaping
83862, 83875, 144 3R, 144 75, 144147, B27M 108
Patent
active
049324500
ABSTRACT:
A machine and method for forming an inside corner portion in a one-piece article material where the inside corner portion is produced by the meeting at a corner of first and second adjacent profiles defined by grooves or members. The inside corner portion at the corner is formed by machining the article material to form portions of the profiles not including the entirity of the inside corner portion, and then shearing the article material in the corner to form the inside corner portion. The machine has first and second cutter assemblies each having a shear cutter. Each shear cutter is mounted for movement along a path between retracted and extended positions such that the path of movement of the cutter of the first assembly meets with the path of movement of the cutter of the second assembly. The article having partial profiles formed therein is mounted with the cutter's positioned and seated with the profiles and such that the profiles are aligned along the paths of movement of the cutters. The cutters are driven along their respective paths while seated with their respective profiles between the retracted and extended positions, such that driving the cutters to the extended position shears the material near the corner to form the inside corner portion.
REFERENCES:
patent: 514053 (1894-02-01), Tengdin
patent: 706458 (1902-08-01), Seaquest
patent: 824146 (1906-06-01), Richards
patent: 824818 (1906-07-01), Richards
patent: 1631526 (1927-06-01), Hartman
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