Constant force sheet glass cutting drill assembly

B - Operations – Transporting – 23 – B

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B23B 45/14 (2006.01) B23D 59/02 (2006.01) B24B 27/06 (2006.01) B25H 1/00 (2006.01) B28D 1/04 (2006.01)

Patent

CA 1107092

A CONSTANT FORCE SHEET GLASS CUTTING DRILL ASSEMBLY ABSTRACT OF THE DISCLOSURE A portable lightweight drill assembly has a cutter mounted against a sheet of flat glass through which a hole is to be drilled; in an alternate embodiment, the drill shaft ex- tends through a hole in the glass and has cutters mounted on both sides of the glass; in each case, the cutters are biased against the glass by a fluid pressure actuated bellows type servo constructed to exert a constant cutting force against the glass surface by means of a self-regulating action of the fluid pressure force.

326753

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