Abstract: A supporting and adjusting apparatus for vertically positioning an open dishrack in a dishwasher particularly of the type where the dishrack is projected outwardly of the cabinet for loading and unloading in which there are provided a pair of housings mounted on opposite sides of the dishrack with each housing having a pair of arms extending in tandem and located adjacent to the corresponding side of the dishrack. Each arm is mounted on a fulcrum and carries a wheel on the end extending from the housing so that on each side of the dishrack there are a pair of wheels engaging a supporting guide track that forms a part of the dishwasher with the tracks being projected outwardly when projecting the dishrack outwardly for loading and unloading. Each housing encloses worm wheel sector gears on the arms and a corresponding single worm gear engaging the sector gears for adjusting the arms about their fulcrums and thereby adjusting the vertical position of the dishrack.

Abstract: A spray assembly having at least one intermittently operating nozzle which comprises a spray device rotatably mounted on a pressurized water source within a washing chamber of a dishwashing appliance and having at least one nozzle thereon in isolated fluid communication with the water source so as to be operative only during select portions of a revolution of the spray device about the water source.