The machine has a rotary spindle feed conveyor (1) for lids (50) which, are supplied to a stack holder (6). The stack holder has three fingers and is rotatably mounted on a bracket (15). An air cylinder (16) raises the stack holder to vertical while a link (21) simultaneously forces it to tilt transversely...http://www.google.fr/patents/US5228826?utm_source=gb-gplus-shareBrevet US5228826 - Machine for stacking round container lids
