(under subclass 484.6) Subject matter in which the take-up is supported and rotated by a driven shaft coaxial with the take-up.
(1) Note. The shaft that drives the take-up need not do so
by internal contact with the take-up. Power may be transmitted from driven shaft to a spool by an element on the shaft that is in frictional engagement with an end of the spool. The same driven shaft must extend into the spool, however.
SEE OR SEARCH THIS CLASS, SUBCLASS:
486, for a helical winding device having a driven spindle and a drive surface engaging the periphery of the take-up.
597, for holders for supporting a bobbin or spindle by contact with only one end of it and having a whirl or pulley for driving the holder and bobbin.
