Drain cleaning machine and adjustable collet chuck mechanism therefor

A drain cleaning machine, comprising:

• a housing having a longitudinal axis, said housing adapted to receive a cable along said longitudinal axis;
• a cage member having a first end and second end, said first end of said cage member having an axial bore therethrough and a plurality of holes located radially about a circumference thereof, said holes extending through an outer wall of said cage member, said second end of said cage member being inserted within said housing such that said axial bore corresponds with said longitudinal axis, said cage member being rotatable about said longitudinal axis and being adapted to receive said cable therethrough;
• a plurality of jaw elements, each of said jaw elements being inserted into and displaceable within one of said holes;
• a cone member surrounding said first end of said cage member, said cone member being rotatable about said longitudinal axis, said cone member engaging each of said jaw elements and displacing said jaw elements radially inward within said holes when said cage member and said cone member are axially displaced relative to one another along said longitudinal axis;
• and
• a motor coupled to said cone member for rotating said cone member, wherein rotation of said cone member causes rotation of said cage member;
• wherein said jaw elements are adapted to engage and grip said cable such that rotation of said cage member causes rotation of said cable about said longitudinal axis.