(under subclass 45) Collectors of the trolley type provided with automatic mechanism operating to stop the rise of the collector upon its leaving the conductor. The trolley is merely prevented from rising; it is not retracted. When the device acts through the agency of the trolley-rope, it is generally provided with a slack take-up.
SEE OR SEARCH THIS CLASS, SUBCLASS:
93,
SEE OR SEARCH CLASS
160, Flexible or Portable Closure, Partition, or Panel,
