Metal working – Method of mechanical manufacture – With testing or indicating
Patent
1980-12-12
1983-05-24
Moon, Charlie T.
Metal working
Method of mechanical manufacture
With testing or indicating
29445, 29526R, 33180R, 33DIG10, 144123, B23Q 1700
Patent
active
043843964
ABSTRACT:
An apparatus and method for use in the installation of an electrical receptacle box and in particular for use in cutting an access opening in wallboard installed in covering relationship to the electrical receptacle box. During wall installation, a guide plate is attached to an electrical receptacle box fixed to a wall stud and having a front opening in substantially flush relationship to the front surface of the wall stud. The guide plate carries first locating means and has outer peripheral side edges substantially coinscidential with the forward edges of the sidewalls of the electrical receptacle box defining the front opening. With wallboard installed in covering relationship to the wall stud and the electrical receptacle box so as to conceal them, a second locating means is used to locate the first locating means. The first and second locating means can be first and second magnets having opposite polarity. With the second locating means, the position of the first locating means is determined and thus for the location of the guide plate. A cutting tool is used to form a hole in the wallboard at a location where it intercepts the guide plate. The cutting tool is then moved to a guide edge provided by the guide plate which can be the outer peripheral side edge of the guide plate or a forwardly facing continuous uninterrupted groove formed in the forward surface of the guide plate. The tool then follows the guiding edge along a closed path until a portion of wallboard is cut out to provide access opening to the electrical receptacle box.
REFERENCES:
patent: 2775812 (1957-01-01), Mohr
patent: 3722360 (1973-03-01), Blakely
patent: 3733707 (1973-05-01), Nix
patent: 3884280 (1975-05-01), Chailer
patent: 4059905 (1977-11-01), Wieting
patent: 4087913 (1978-05-01), Jackson
patent: 4202388 (1980-05-01), Wieting
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