Cutting by use of rotating axially moving tool – Machine including plural tools – Plural – simultaneously operational tools
Patent
1988-12-05
1990-04-17
Howell, Daniel
Cutting by use of rotating axially moving tool
Machine including plural tools
Plural, simultaneously operational tools
408 53, 408112, B23B 4100, B23B 4900
Patent
active
049175491
ABSTRACT:
A boring machine provides a pair of motor-driven drills mounted to a template so that the drill chucks are aligned in parallel, side-by-side arrangement in a housing beneath the template. A guide mechanism, including a front plate with a pair of guide holes, is also mounted beneath the template, with a pair of spring loaded guide rods extending from the front plate to the housing. A pair of stops are positioned between the front plate and the housing providing a limit to travel of the front plate.
REFERENCES:
patent: 1079650 (1913-11-01), Jordan
patent: 2234789 (1941-03-01), Wunderlich
patent: 2918833 (1959-12-01), Stewart et al.
patent: 4059162 (1977-11-01), Zbinden et al.
patent: 4286902 (1981-09-01), Gagliano et al.
Howell Daniel
Johnson Larry D.
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