Multiple bit power drill

Details Multiple bit power drill Multiple bit power drill

1990-04-05

1991-11-19

Briggs, William

Metal working

Plural diverse manufacturing apparatus including means for...

Common reciprocating support for spaced tools

408 35, B23Q 3157

Patent

active

050654985

ABSTRACT:
The present invention provides an electric power drill having a magazine containing a multiplicity of bits from which a single bit is selected using a bolt action. The magazine is cylindrical and is rotated about a central axis to select a bit. The bit is loaded into the chuck by forward motion of the bolt and is tightened into operating position by the chuck. The bit is removed from the chuck by retraction of the bolt.

REFERENCES:
patent: 2679770 (1954-06-01), Carter et al.
patent: 4572038 (1986-02-01), Graham
patent: 4604005 (1986-08-01), Russ
patent: 4653356 (1987-03-01), Golden
patent: 4762036 (1988-08-01), Orlitzky et al.
patent: 4893529 (1990-01-01), Lin

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