Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Having tool-opposing – work-engaging surface
Patent
1992-09-29
1993-08-24
Howell, Daniel W.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Having tool-opposing, work-engaging surface
408112, 409135, B23B 4514
Patent
active
052383369
ABSTRACT:
A hand held power dowel tool includes a high speed universal motor coupled to a relatively simple two-gear transmission. The motor speed gear reduction combination is specifically designed for 1/4 inch and 3/8 inch drilling of wood, making the tool unusually lightweight for the power it delivers. The tool's drive shaft is especially long and well supported to rigidly hold a conventional drill bit without a need for a drill guide bushing. A smooth acting guide assembly aligns the tool to the board and accurately guides the drill bit to a preset depth. The tool also includes an adjustable viewing window that is kept clear by a stream of air discharged by the tool's cooling system. The adjustable viewing window and an adjustable chuck accommodates wood of various width and thicknesses as well as various dowel peg diameters. The tool's range of wood joining capabilities surpasses today's plate joiners.
REFERENCES:
patent: 2849900 (1958-09-01), Heidtman, Jr.
patent: 3244030 (1966-04-01), Godfrey
patent: 3362447 (1968-01-01), Elder, Jr.
patent: 3703846 (1972-11-01), Krafft
patent: 4572715 (1986-02-01), Wolff
patent: 4893970 (1990-01-01), Becraft
Trend-Lines Catalog No. 502B, pp. 5 & 1B, 375 Beacham St., Chelsea, Mass. 02150; Publ. Date, Place, & Author Unknown.
Gaauwe David A.
Sanders Thomas A.
Harter Robert J.
Howell Daniel W.
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