Multipurpose chuck

A multipurpose chuck comprising:

• a circular body defined by a top plate spaced apart from back plate with an outer edge forming a continuous outer side wall and an inner edge forming a chamber therebetween,
• said top plate of said body having four narrow slots and two wider slots extending between said outer edge to said inner edge, each said slot positioned in equal 60 degree radial spacing, said wider slots positioned 180 degrees apart on the radial spacing;
• a narrow jaw plate slidably secured in each said narrow slot, said narrow jaw plate constructed and arranged to receive a jaw member releaseably securable thereto;
• a wide jaw plate slidably secured in each said wider slot, said wide jaw plate constructed and arranged to receive a jaw member releaseably securable thereto;
• a pinion having a first end extending through said outer edge and a second end including a bevel gear, said bevel gear engaging a mating bevel gear on a scroll wheel, said scroll wheel having spiral set of teeth constructed and arranged corresponding scroll teeth formed in each of said jaw plate for moving each said jaw plate in a linear motion between said inner edge and said outer edge;
• a laminated permanent magnet plate positioned between each said slot;
• a magnet actuation cam having a first end extending through said outer edge and a second end engaging a magnet wheel attached to each said magnet plate by a wheel post, said magnet cam available for moving a permanent magnet between a storage position and an engagement position;
• wherein a narrow jaw member can be secured to at least three said jaw plates for securing a workpiece having a uniform circular shape;
• wherein a narrow or wide jaw member can be secured to said wide jaw plates for use in vise gripping a workpiece having a non-uniform circular shape;
• wherein said magnet plate can be activated by moving of the permanent magnet by rotation of said magnet actuation cam.