Drilling device for drilling plates susceptible to breaking

Details Drilling device for drilling plates susceptible to breaking Drilling device for drilling plates susceptible to breaking

1986-01-31

1988-03-15

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51111R, 269 873, 269258, 408 37, 408 72R, B24B 100

Patent

active

047304200

ABSTRACT:
A drilling machine for drilling holes in glass panes includes an annular support and an annular pressing member aligned opposite each other along a path of movement of the drill bit. The support and the pressing member are swingably mounted relative to the axis of the drill bit and are made preferably as inner rings of a ball and socket joint.

REFERENCES:
patent: 3813820 (1974-06-01), Highberg et al.
patent: 4429862 (1984-02-01), Niedecker

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