Telescoping nose piece

Claim 1

A nose peice for a power drill, said drill having a drill motor, a drill spindle and a drill bit attached to said drill spindle comprising: (a) a first housing for enclosing both said drill bit and said drill spindle; (b) means for attaching and securing in a fixed position said first housing to said drill motor; (c) an extensible second housing, nested within said first housing in a complementary, concentric, and rotatable relationship thereto, for creating a macro variable relationship both in the longitudinal and rotational positions between said extensible second housing with respect to both said first housing and said drill bit at predetermined, selected, fixed positions; (d) coolant means for cooling a workpiece with coolant while work is being performed thereon; and (e) exiting means for permitting the removal of chips, dust and excess coolant from said Y workpiece through both said first housing and said extensible second housing; (f) means for adjusting the longitudinal and rotational positions of said extensible second housing with respect to both said first housing and said drill bit, said means including a first linear array of indicia extending along said extensible second housing to form a set of graduations parallel to the longitudinal axis of said extensible second housing and said first housing, at least one complementary indicia positioned on said first housing for alignment with an indicia from said linear array so that the relative positions of said extensible second housing and said drill bit can be determined and fixed in relation to said workpiece; and (g) means for securing said extensible second housing in said predetermined, selected, fixed positions with respect to both said first housing and said drill bit.