A tree positioning mechanism of the blocking trigger type, comprising block triggers operated each individually through a selecting member (Machine-translation by Google Translate, not legally binding)

摘要

A shaft positioning mechanism of the type of locking trigger in which the shaft to be positioned carries a plurality of individually adjustable stop elements intended to cooperate selectively with triggers arranged next to the shaft whose triggers are intended to be individually moved by means of a trigger selector to the operative position in which they cooperate with a corresponding stop element of the shaft in order to stop this shaft at a predetermined position characterized in that the mechanism comprises a separately movable trigger elevator cooperating with all the triggers and has for each trigger a profile such that in one of two extreme positions to which the trigger elevator can be moved by external means all the triggers are kept lifted by the profile of the trigger elevator and in the other extreme position any of the triggers can be moved to its operative position by the reader without being prevented by the trigger elevator cooperating any trigger with a stop element and being moved to the inoperative position by the profile of the trigger elevator when the latter moves from the last mentioned end position to the extreme position mentioned first . (Machine-translation by Google Translate, not legally binding)