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
1975-11-03
1977-11-08
Abercrombie, Willie G.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Having tool-opposing, work-engaging surface
144 35R, 408712, B23B 4100
Patent
active
040573583
ABSTRACT:
A generally horizontal support table is provided including an upper surface and defining a transverse center line. A support member is supported from the table for guided rectilinear reciprocation toward and away from one side of the table in a plane normal to the upper surface of the table and the support member includes structure for supporting a rotatable chuck therefrom disposed above the upper surface of the table and in the aforementioned plane. The chuck faces toward the table and is adapted to rotatably support a drill bit. Further, a pair of abutment members overlie the upper surface of the table on opposite sides of the aforementioned plane and are supported from the table for guided movement toward and away from the plane along paths normal to the plane. The abutment members include opposing abutment surfaces paralleling the aforementioned plane and structure is provided and connected between the table and the abutment members operative to inversely and equally shift the abutment members toward and away from the plane containing the transverse center line of the table.
REFERENCES:
patent: 5011 (1847-03-01), Johnson
patent: 114183 (1871-04-01), Nelson
patent: 2905212 (1959-09-01), Evans et al.
patent: 2943653 (1960-07-01), Crioler
patent: 3071988 (1963-01-01), Gibson
Abercrombie Willie G.
Bilinsky Z. R.
Jacobson Harvey B.
O#Brien Clarence A.
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