| 摘要 |
A retractor mechanism for an article handling apparatus is comprised of a longitudinal track assembly which supports a shuttle unit for reciprocating movement along the track externally thereof; the stroke of the shuttle unit is adjustable by means of a longitudinally displacable shock absorber assembly at one end of the track which is adapted to stop the travel of the shuttle unit and absorb the kinetic energy of the latter; the shock absorber assembly is adjustable by means externally of the track including a screw supported within the track at both ends for rotation and which carries an internally threaded member which supports the shock absorber assembly; upon rotation of the screw within the track the shock absorber support will be moved along the screw taking the shock absorber with it in a direction towards the shuttle unit to thereby limit the travel of the shuttle unit. |
