Abstract: An unscrambler, to which lightweight cup- or bowl-shaped articles such as the bottoms for plastic bottles or caps for aerosol containers, are fed prior to delivery to another, e.g. a bottle-making or cap-applying machine, for which they must all be presented right-way-up, and which are likely to become "stacked" when scrambled together, comprises a shallow, rotating dish reservoir which can be very big, e.g. up to or even more than 30 feet (10 meters) across, but which can be suspended from a roof or ceiling so as not to take up floor space. The dish has an inclined rim with an outer ledge, the articles being blown up the rim onto the ledge by an air current which puts them on the ledge right-way-up. Any articles that are stacked or not aligned properly on the ledge are removed by further air jets or mechanically.