Chip extractor bushing

Details Chip extractor bushing Chip extractor bushing

1984-10-05

1986-06-10

Briggs, William R.

Cutting by use of rotating axially moving tool

With work-engaging structure other than tool or tool-support

408115B, 408241B, B23B 4902

Patent

active

045940312

ABSTRACT:
Disclosed is a bushing (12) for guiding a rotating member such as a drill (10) into a workpiece (16). Scored in the interior wall of the bushing bore is a groove (18) in the form of a counterclockwise helix having size and slope characteristics that provide effective removal of the shavings or "chips" from the interior portion of the bushing bore as the drill cuts into the workpiece.

REFERENCES:
patent: 479039 (1892-07-01), Van Benthuysen
patent: 1612205 (1926-12-01), Muth
patent: 1617554 (1927-02-01), Swartz
patent: 2058298 (1936-10-01), Chesley
patent: 2737425 (1956-03-01), Fisher
patent: 2744424 (1956-05-01), Fisher
patent: 3180379 (1965-04-01), Stewart
patent: 3204284 (1965-09-01), Merriman
patent: 3349649 (1967-10-01), Mele
patent: 3756736 (1973-09-01), Marcoux
patent: 3768918 (1973-10-01), Bethke
patent: 3981604 (1976-09-01), Cenis

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