(under subclass 390) Subject matter comprising motor control means sensitive to the amount of material wound on or unwound from the spool to interrupt winding or unwinding.
(1) Note. The control means may include either a direct length measuring device or an indirect measuring device such as a turn counter or object carried by the elongated material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
534.2, for a length-responsive stop in a winding machine.
563.2, for an unwinding machine with a length-responsive detector or stop.
564.1+, for an unwinding machine with a limited interval drive.
SEE OR SEARCH CLASS
33, Geometrical Instruments, 713+, 734, 754, and 761+, for a sounding device or a flexible measuring tape reel.
192, Clutches and Power-Stop Control,
125, for a material control stop, per se, or in general use.
200, Electricity: Circuit Makers and Breakers,
61.13+, for a circuit maker/breaker specially designed for operation by a running web or strand, spool, or guide.
254, Implements or Apparatus for Applying Pushing or Pulling Force,
269, and 276 for a brake or drive control device responsive to the length of wound or unwound line of a winch.
324, Electricity: Measuring and Testing,
207.11+, for length of material measurement, per se, or in other combinations.
