(under subclass 93) Driving devices provided with means for positively varying the speed during each cycle of operation of the traversing element of the twisting couple. This operation may be effected by the builder motion.
(1) Note. For traverse-controlled devices for controlling the slippage of a belt or of friction surfaces, see this class, subclass 92.
(2) Note. For similar speed adjustment superposed upon a constant speed variation, see this class, subclass 95.
SEE OR SEARCH CLASS
242, Winding Tensioning, or Guiding,
478.8+, for varying a characteristic of ring rail traverse during operation.
