Abstract: A buffing structure for rear end travel of hydraulic cylinder. The central portion of the bottom of the piston of the hydraulic cylinder is formed with an internal hole which axially extends through the piston and deeply extends into the piston stem. The internal hole has a large vent and a small vent which radially pass through the piston stem. The small vent is adjacent to the joint between the piston stem and an end face of the piston facing the rear end cap. The large vent is formed at a rear end of the internal hole deeply in the piston stem. The large vent is axially spaced from the small vent by a certain distance. When the piston moves to a position near the rear end cap of the hydraulic cylinder, the large vent is first sunk into the rear end cap and blocked. At this time, the oil can only flow through the small vent with smaller cross-sectional area so as to reduce oil flow and achieve a buffing effect.

Abstract: Arrangements are provided for an automatic vending machine, including a vertical support frame, a top plate mounted securely on the top end of the support frame, and a bottom plate mounted securely on the bottom end of the support frame. An L-cross-sectioned side plate is hinged to a side wall of the support frame. A rib arrangement is provided on the side plate and includes an L-shaped first horizontal rib, an L-shaped second horizontal rib, an L-shaped third horizontal rib, an L-shaped fourth horizontal rib and a vertical rib. The first horizontal rib is positioned just over the top plate. The second horizontal rib is positioned just under the top plate. The entire length of the second horizontal rib extends under an intermediate portion of the first horizontal rib, so as to conceal an L-shaped peripheral plate portion of the top plate between the first and second horizontal ribs. The third horizontal rib is positioned just under the bottom plate.

Abstract: An anti-destruction structure for an automatic vending machine includes a plurality of holes formed through a bottom plate mounted securely on the lower end portion of a housing, and a porous auxiliary plate fixed in the housing just above the bottom plate. The auxiliary plate has a plurality of holes formed therethrough. The holes of the auxiliary plate are communicated with and staggered relative to the holes of the bottom plate.

Abstract: A storage bin structure is used for superposed articles in an automatic vending machine and includes a front wall unit which can be moved to vary the volume of the storage space for the articles to be mold. A conveyer unit includes two motor-activated circular front wheels and two elliptical rear wheels. Two endless conveyer belts run around the front wheels and the rear wheels. When the belts are idle, the upper ends of the rear wheels are below those of the front wheels so as to prevent the lowermost one of the superposed articles from forward movement. When the belts circulate in response to entry of coin or coins, the rear wheels rotate so that the upper ends of the rear wheels are higher than those of the front wheels, thereby moving the articles forward.