Nail head drilling guide

Details Nail head drilling guide Nail head drilling guide

1979-01-22

1981-03-17

Briggs, William R.

Cutting by use of rotating axially moving tool

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

Adjustable, tool-guiding jig

B23B 4900

Patent

active

042564204

ABSTRACT:
A guide for locating and supporting a drill bit while drilling out the heads of nails which support rigid asbestos siding shingles. The guide is positioned by contact with an edge of a shingle. A number of drill guide holes is provided in the guide, and each hole has a countersunk portion of different diameter so as to accomodate different sizes of nail heads.

REFERENCES:
patent: 2733517 (1956-02-01), Gjersoe
patent: 2889633 (1959-06-01), Simon
patent: 2949798 (1960-08-01), Berta, Jr.
patent: 3026748 (1962-03-01), Comorau
patent: 3598496 (1971-08-01), Skinner

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