B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
77/41
B23B 47/00 (2006.01) B23B 49/00 (2006.01) B23B 51/00 (2006.01) B23Q 13/00 (2006.01)
Patent
CA 1104848
ABSTRACT OF THE DISCLOSURE A cutting end protector is used in securing one of the cutting ends of a double ended drill bit in a drill chuck. The cutting end protector comprises a body portion contoured to mate with the inner surface of the drill chuck and adapted to receive the drill chuck pin. The body portion has a cutting end receiving face provided with a central recess for receiving the point of the cutting end and a pair of chamfered face portions diverging outwardly and forwardly from the body portion, one on either side of the central recess. The chamfered face portions are slanted in opposing directions for fitting flushly with the cutting edge trailing sur- faces of the cutting end.
329823
Johnson Douglas S. Q.c.
Tickins Jack J.
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