7 Machines and apparatus for conveying, dispatching, and sorting goods, namely, single link and chain link conveyors, conveying vehicles, namely, carriages supported on rolling balls, conveying chains, grippers, pendants, namely, trolley conveyors, holders, namely, spring-actuated grabs, mechanical clamps, and conveying belts; buffer and storage machines; bifurcations, namely, conveyor junctions, mechanical conveyor switches, and height and distance transfers; sorters; palletizing apparatus; engines and gear boxes; and replacement parts for the foregoing