Apparatus for locating and drilling stud plate holes

Details Apparatus for locating and drilling stud plate holes Apparatus for locating and drilling stud plate holes

1990-10-25

1991-12-03

Cuchlinski, Jr., William A.

Geometrical instruments

Gauge

With point marker

33574, 33613, 33644, B25H 704

Patent

active

050689762

ABSTRACT:
A bolt hole locating and drilling apparatus comprises an elongated generally rectangular bar having first and second ends, a first semi-circular notch in the first end, a second semi-circular notch in the second end, a through bore extending through the bar in a location intermediate the ends thereof for dividing the bar into a first arm of a first length of about three and one-half inches and a second arm of a second length of about five and one-half inches, a drill shaft rotatably journaled in the bore mounted for reciprocable movement therein.

REFERENCES:
patent: 2384071 (1945-09-01), Boyer
patent: 3282132 (1966-11-01), Neuschotz
patent: 3406460 (1968-10-01), Colwell
patent: 4363173 (1982-12-01), Caldera
patent: 4520571 (1985-06-01), Harding
patent: 4589806 (1986-05-01), Rotta, Jr.
patent: 4893970 (1990-01-01), Becraft
patent: 4948304 (1990-08-01), Kobayashi
patent: 4993168 (1991-02-01), Acuna
Charles F. Henry, American Machinist, 9/27/33, pp. 637-638.

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