Metal tools and implements – making – Blank or process – Drill
Patent
1984-02-13
1988-10-11
Bilinsky, Z. R.
Metal tools and implements, making
Blank or process
Drill
175410, 408144, 408227, B23B 5100
Patent
active
047762411
ABSTRACT:
A cutting tool comprising a shank having a substantially diametrical cut through one end of the shank and having the diametrically opposed limbs formed by such a cut bent radially outwardly from the axis of the shank. Cutting blades are secured to the flat surfaces of the limbs formed by the cut. Preferably, the limbs are bent outwardly in opposite directions along the plane of the cut, and the edges of overlapping portions of the limbs are welded together to strengthen the cutting tool.
REFERENCES:
patent: 1799318 (1931-04-01), Rekback
patent: 1902513 (1933-03-01), Meutsch
patent: 2372612 (1945-03-01), Stogsdill
patent: 2626533 (1953-01-01), Huckshold
patent: 2740611 (1956-04-01), Bowen
patent: 3158922 (1962-12-01), Reese
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