Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Movable relative to tool along tool-axis
Patent
1989-09-22
1990-05-08
Howell, Daniel
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Movable relative to tool along tool-axis
408712, B23B 4900
Patent
active
049233416
ABSTRACT:
Disclosed is portable drill guide apparatus for a hand held drill. The apparatus includes a base having an upper surface, a flat bottom surface and an annular opening therethrough, the opening having an axis. A support post extends from the base to one side of the opening and is perpendicular to the base bottom surface, the post having a longitudinally extending bore. A shot extends longitudinally in the side of the post and is parallel to the axis thereof. A drill chuck assembly comprises a bar complementary in cross-sectional shape to the bore and a chuck support. The support extends outwardly from the bar and has a portion adapted to move within the slot. The chuck support further includes a shaft journalled therein, the shaft having an upper end and a lower end with a drill chuck being operatively connected to the lower end over the base opening. An adapter is provided for operative association with a drill chuck of a portable drill and has means for detachable driving connection with the upper end of the chuck support shaft.
REFERENCES:
patent: 2622458 (1952-12-01), Jenkins
patent: 2714026 (1955-07-01), Schultz
patent: 2831376 (1958-04-01), Daniels
patent: 3464295 (1969-09-01), Gallion
patent: 3550481 (1970-12-01), Jensen
patent: 3827822 (1974-08-01), Converse
patent: 3874810 (1975-04-01), Russell
patent: 4242016 (1980-12-01), Faris
patent: 4585376 (1986-04-01), Davenport, Jr. et al.
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