US PATENT SUBCLASS 191 / 63.4
.~.~.~.~ Slidable pins

Current as of: June, 1999
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191 /   HD   ELECTRICITY: TRANSMISSION TO VEHICLES

45 R  DF  COLLECTORS {8}
50  DF  .~ Trolley {10}
59  DF  .~.~ Heads {9}
63  DF  .~.~.~ Wheels {5}
63.4.~.~.~.~ Slidable pins

DEFINITION

Classification: 191/63.4

(under subclass 63) The supporting-pins for the trolley-harps are mounted so as to permit up and down or rear and forward movement of the pins in the harps.