Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Frictionally engaging sides of opening in work
Patent
1991-09-26
1992-11-17
Howell, Daniel W.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Frictionally engaging sides of opening in work
408 72R, B23B 4900
Patent
active
051637910
ABSTRACT:
A pin locator device for use in positioning a drill relative to an already drilled hole in a workpiece for the purpose of drilling a line of equally interspaced holes in the workpiece is in the form of a spring plunger which can be depressed into the already drilled hole and released when the workpiece is properly situated for the next drilling operation.
REFERENCES:
patent: 171546 (1875-12-01), Boe
patent: 2847881 (1958-08-01), Allemann
patent: 3487731 (1970-01-01), Coon
patent: 4728230 (1988-03-01), Blum
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