Stop motion apparatus for a roving drafting device of a textile machine

A stop motion apparatus for stopping the travel of roving through a nip defined by a pair of roving feed rollers of a drafting device of a textile machine, comprising:

• a stop member for selective insertion into the nip to separate the roving feed rollers and press the roving against one of the feed rollers;
• an actuating rod longitudinally movable for manipulating said stop member;
• a frame movably supporting said actuating rod;
• means connecting said stop member to said actuating rod;
• urging means for urging said actuating rod from a disengaged position in whcih said stop member is held out of engagement with the roving feed rollers by said connecting means to an engaged position in which said stop member is disposed in the nip between the roving feed rollers;
• said actuating rod having a notch formed therein, said notch opening transversely to the longitudinal extent of said actuating rod and having an undercut surface facing in the direction of urging by said urging means;
• and
• notch engaging means including a plunger element configured for receipt in said actuating rod notch against said undercut surface in the disengaged position of said actuating rot to prevent movement of said actuating rod from its disengaged to its engaged position by said urging means and means for selectively moving said plunger element into and out of said actuating rod notch.