Machine for drilling a double T profile

Cutting by use of rotating axially moving tool – With signal – indicator – illuminator or optical means

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Details

33174L, 408111, B23B 4100

Patent

active

044178344

ABSTRACT:
A scale is connected with the vertically movably tracer so as to provide an indication of the surface of the tracer abutting the underside of a stem of a T profile. The scale is adjustable relative to the tracer by an amount equal to one half the stem width and cooperates with an indicator of the center line of the drill of the drilling unit.

REFERENCES:
patent: 3120135 (1964-02-01), Henderson
patent: 3977804 (1976-08-01), Kitagawa
patent: 4010885 (1977-03-01), Keizer et al.
patent: 4080740 (1978-03-01), Haley

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