Gear cutting – milling – or planing – Milling – With regulation of operation by templet – card – or other...
Patent
1979-11-28
1982-11-16
Bilinsky, Z. R.
Gear cutting, milling, or planing
Milling
With regulation of operation by templet, card, or other...
33191, 33DIG10, 1441445R, 144365, 409130, 409182, B23C 120, B27C 100, G04B 514
Patent
active
043593020
ABSTRACT:
An apparatus and method for cutting wallboards, such as gypsum wallboards or rock wallboards to an appropriate size and shape, and for locating utility boxes hidden behind a panelled wall and cutting of a section of the wall at the opening of the utility boxes. The apparatus of the invention comprises a portable hand tool having an adjustable rest for adjusting the depth of cut and a built-in ruler-guide arrangement permitting to cut parallel to a side of a wallboard or permitting to cut circles in a wallboard. The hand tool may be used in combination with a separate locator and cut-out template member positioned in utility boxes mounted behind an installed wall, which provides an indication of the location of each utility box by way of a wallboard puncturing prong, for cutting out an opening in the wallboard, following appropriate guide grooves in the face of the locator and cut-out template.
REFERENCES:
patent: 2887776 (1959-05-01), Eisner
patent: 3733707 (1973-05-01), Nix
patent: 3888013 (1975-06-01), Benoit
patent: 4059905 (1977-11-01), Wieting
patent: 4096964 (1978-06-01), Glick
patent: 4202388 (1980-05-01), Wieting
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