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
1993-10-04
1994-06-21
Bishop, Steven C.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Having tool-opposing, work-engaging surface
173 36, 269904, 408111, 408136, 408712, 414 11, B23B 4514, E21C 1100
Patent
active
053223977
ABSTRACT:
A supporting apparatus for supporting a drill in an elevated position, the drill including a drill chuck having an axis of rotation, the drill being supported by the supporting apparatus such that the axis of rotation of the drill chuck is orientated substantially vertically, the supporting apparatus including an elongated column, an actuating lever pivotally connected to the column at a pivot point and extending outward from the pivot point in two diametrically opposed directions to thereby form two lever arms, an attachment mechanism formed on a first of the two lever arms for attaching the first lever arm to a portion of the drill, a manual grip portion formed on a second of the two lever arms, a guide link pivotally connected to both the column and to the drill adjacent the drill chuck, the pivotal connection of the guide link to the column being disposed vertically above the pivot point pivotally connecting the actuating lever to the column, and an extended plate member connected to an upper portion of the column, the extended plate member extending at substantially a right angle to the axis of the column.
REFERENCES:
patent: 2405110 (1946-08-01), Bullock
patent: 3234977 (1966-02-01), Byers
patent: 3930645 (1976-01-01), Anderson
patent: 4010943 (1977-03-01), Eft
patent: 4136579 (1979-01-01), Robinson et al.
patent: 4442905 (1984-04-01), Agoston
patent: 4695028 (1987-09-01), Hunter
patent: 4733844 (1988-03-01), Molloy
patent: 4736804 (1988-04-01), Geibel
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