Abstract: A machine for washing articles which are of greater height than width dimension when supported by an article receiving rack includes a cabinet of generally rectangular horizontal cross-section capable of accommodating the horizontal dimensions of the rack. The cabinet defines a washing chamber and a front access opening of sufficient height to accommodate lateral movement of a rack containing upright articles into the washing chamber. A lower door is pivotally mounted on the cabinet adjacent to the lower edge of the access opening for movement from a vertical closed position to a horizontal open position. The lower door includes a rack supporting surface and is dimensioned to correspond in size to the rectangular horizontal cross-section of the cabinet. An upper door is mounted for vertical movement from a lower position covering the remaining upper portion of the access opening to an upper position uncovering the upper portion of the access opening.

Abstract: The invention disclosed herein is a structure for use as a pre-wash station for commercial dishwashing systems which is adapted for use with existing dishwashing systems. The structure includes a basin with a slanted bottom to allow the drain of waste material from the basin and includes a rack for supporting dishes which have been stacked in a carrier and which are to be processed at the pre-wash station. The rack has large openings to allow the waste material to fall into the basin as the dishes pass through the pre-wash station. One end of the basin is designed with a lip which will attach into the opening of the commercial dishwasher with which the pre-wash station is used and which has an edge positioned in such relationship to the rack so that when the carrier holding the dishes is moved from the pre-wash station into the dishwasher, the edge will scrap any waste materials off the bottom of the carrier.

Abstract: An apparatus for distributing wash liquid to a spray device which is located above a dish-supporting rack in a dishwashing appliance, the apparatus including a vertical hollow tower having an open lower end fixedly attached to the rack, means for rotatably mounting the spray device onto an apertured upper end of the tower so that there is fluid communication between the tower and the spray device, and a fluid-expansible coupling member located below the rack and having an upper opening below and substantially concentric with the open lower end of the tower. A hub assembly supports the coupling member on a pump means which forces wash liquid through the hub assembly and into the coupling member to expand it into a sealing contact with the tower at the open lower end of the tower so that fluid flows through the tower to the spray device.

Abstract: A fluid delivery system for a dishwashing appliance of the type having movable upper and lower racks and upper and lower spray arms has a telescoping tower in fluid communication with a manifold during operation. A face seal between the upper spray arm and the telescoping portion of the tower is effected upon buildup of fluid pressure in the tower sufficient to bring the telescoping portion into engagement with the upper spray arm and thereby deliver wash liquid to the upper spray arm. A generally axially-extending seal actuated by the fluid pressure in the tower seals the telescoping portion to the fixed portion of the tower during delivery of wash liquid through the fluid conduit system. When the pumping of the wash liquid is terminated, the telescoping portion of the tower automatically retracts.

Abstract: The apparatus serves to clean surfaces of articles by spraying a liquid cleaning fluid on said articles. A support is provided for carrying an article to be cleaned, also a nozzle system for spraying said cleaning fluid, and mechanism for moving said support and nozzle system relative to each other. The nozzle system comprises an upright nozzle tube disposed laterally of the support and above the same, an upper horizontal nozzle tube extending over the support, and a lower horizontal nozzle tube extending under the support. Each of said upright, upper and lower nozzle tubes have nozzles which are arranged in a longitudinal row and directed toward said support. Said upright and upper nozzle tubes and said support define a cleaning zone between them. Said nozzle system comprises an additional nozzle tube extending into said cleaning zone and having at least one longitudinal row of nozzles which extend laterally from the axis of said additional nozzle tube.