Adjustable wobble dado assembly having improved dynamic balance

An adjustable wobble dado assembly comprising:

• a. a plate-like circular blade having two opposite side surfaces, a plurality of cutting teeth spaced around its periphery and means defining an aperture formed axially through its center;
• b. a pair of inner plate member, fixedly and centrally mounted on opposite sides of said blade, having generally parallel outer surfaces and complementary inner surfaces inclined with respect to said outer surfaces and in contact with said blade for holding said blade at a position inclined relative to said outer surfaces, each of said inner plate members having means defining a circular bore formed centrally and axially through said inner plate member, each of said bores being tapered so as to have a radius of curvature gradually decreasing in a direction from said outer surface toward said inner surface;
• and
• c. a pair of interconnected outer plate members, having generally parallel outer surfaces and complementary inner surfaces inclined with respect to said outer surfaces of said outer plate members and bearing rotatably against said respective outer surfaces of said inner plate members, each of said outer plate members having means defining an arbor bore formed centrally through said outer plate member along an axis generally normal to the outer surface thereof and a substantially cylindrical hub surrounding said arbor bore and extending centrally from said inner surface of said outer plate member into a respective one of said circular bores along the same axis as said arbor bore, each of said cylindrical hubs having an outside radius of curvature at locations along the length thereof which is smaller than the corresponding radius of curvature at the same location of the circular bore into which the hub extends, the difference between said hub radius of curvature and said circular bore radius of curvature being greater at a location adjacent the outer surface of said inner plate member than at a location adjacent the inner surface of said inner plate member so as to permit tilting of said circular bore with respect to said hub about said location adjacent the inner surface of said inner plate member when said circular bore and hub are rotated relative to one another.