Drill stand with marking element

Details Drill stand with marking element Drill stand with marking element

1980-12-12

1982-12-28

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

33189, 408 75, B27G 2300, B23B 3900

Patent

active

043654185

ABSTRACT:
On a drill stand, a drilling member is movable between an inactive position spaced from the material to be drilled and an active position in contact with the material to be drilled. A marking element is mounted on the stand and is slidably movable between a retracted position and a marking position. In the marking position, a pointer on the element can mark the drilling axis on the material to be drilled. With the drilling axis located, the drilling member can be moved into the active position to commence drilling.

REFERENCES:
patent: 793901 (1905-07-01), Noyes
patent: 893427 (1908-07-01), Bennett
patent: 1166261 (1915-12-01), Rogers
patent: 2369425 (1945-02-01), Becker
patent: 2373927 (1945-04-01), Turner
patent: 2568886 (1951-09-01), Fried
patent: 2601330 (1952-06-01), Schmidt
patent: 3915241 (1975-10-01), Bieri

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