(under subclass 291) Comminuting elements provided with means attached thereto to adjust or alter the distribution of weight about the axis of the elements.
SEE OR SEARCH CLASS
73, Measuring and Testing,
66+, for machines for testing rotor unbalance.
74, Machine Element or Mechanism,
573, for rotors and fly-wheels provided with balancing means. 464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, appropriate subclasses, particularly
107+, for coupling which accommodates displacement between a millstone and a vertically oriented shaft.
