Woodworking – Process – Mechanical cutting or shaping
Patent
1998-01-23
1999-03-09
Bray, W. Donald
Woodworking
Process
Mechanical cutting or shaping
30372, 83745, 1441365, 14413695, 144364, 144368, 144371, 144 486, 1441441, 14414451, 144 73, B23C 120, B27C 510, B27M 300
Patent
active
058788000
ABSTRACT:
The traditional method of carving out an electrical outlet box opening in a log wall consists of chiselling after a series of closely spaced holes are drilled in the log. It is a time consuming and difficult undertaking. An apparatus for quickly and easily cutting a rectangular opening in a log wall is disclosed. The apparatus comprises: a saw jig, having a central opening, for mounting on an upright side of the log wall; a cutting drum having teeth around its periphery; drive means to revolve the cutting drum; and, a guide arm attached to the jig to guide the revolving drum into the central opening. Most preferably the drive means is a chain saw. A method of cutting a rectangular opening in a log wall comprises the following steps: mounting a jig having a central opening and a guide arm, on an upright side of the wall; and, guiding a revolving drum having teeth on its periphery through the central opening into the wall using the guide arm on the jig. A flat face plate mounting surface around the rectangular opening in the log wall is the provided by: mounting a flat jig having a rectangular central opening therein over the rectangular opening on the wall; and then, guiding a router around the rectangular opening in the flat jig.
REFERENCES:
patent: 2679271 (1954-05-01), Patten
patent: 4048720 (1977-09-01), Wheeler
Bray W. Donald
Gallinger G. F.
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