Abstract: An improved rotary sprayer for an automatic dishwasher includes a pair of elongated hollow arms containing a plurality of nozzles and a pair of end nozzles for periodically and alternately opening and closing, respectively by rotation of rotation converting valve which is, in turn, driven by valve driving member whereby dishes held in the dish racks is uniformly cleaned by spraying the surface of the dishes with the cleaning water by the nozzles.

Abstract: A wheel washer has first and second applicators which each have a row of plural spaced nozzles for delivering high pressure fluid to the wheels of a vehicle. The first applicator is fixedly mounted adjacent a track which guides the tires at the driver side of the vehicle. The second applicator is mounted by parallelogram support structure for movement toward and away from the tires at the passenger side of the vehicle. This second applicator is shifted to maintain a desired spacing between the nozzles and the wheels being cleaned, regardless of the width of the vehicle. Cleaning fluid is delivered to one nozzle of each applicator and a laterally disposed nozzle of the other applicator at a time. In succession, the pairs of nozzles apply cleaning fluid to the wheels as the vehicle travels through the vehicle wash. Treadle switches, angled relative to the direction of vehicle travel, are utilized to control the flow of fluid to the desired nozzles of the applicators.

Abstract: An automatic washing and sterilizing apparatus for a stable provided with shooting and spraying nozzles fixed on two cranes which can be moved right and left in the stable by means of two wires wound around wire drive wheels driven by a speed transmission system connected with motors. The nozzles are connected with pipes and valves to shoot or spray water or sterilizing solution selectively. The moving direction of the cranes is altered by two locating switches having a control bar to be touched by the plates of the cranes.

Abstract: A washing apparatus for providing a fluid such as hot water to either a spray nozzle or a dishwasher. A thermostatically controlled heated water storage tank supplies fluid to a piping system having a first branch and a second branch. The first branch is directed to the inlet of a pumping system which pumps hot water to a first outlet of the apparatus. The first branch also includes a bypass line. The second branch of the piping system is directed toward a second outlet of the apparatus and includes a flow sensing switch. The first outlet is adapted for connection to a spray wand having a high pressure nozzle therein for supplying high pressure sprayed fluid as desired. The second outlet is adapted for connection to a dishwasher having a solenoid controlled inlet valve. As long as the dishwasher is not running, the pumping system and spray wand may be used normally.

Abstract: A vehicle headlight having a glass front and an outer frame surrounding the glass front and supporting at least one sprayer directed towards the same; which frame is hinged to the headlight in such a manner as to turn about an axis in relation to the same, by virtue of a hydraulic piston powered by a compressed fluid supplying the aforementioned sprayer.

Abstract: A washing machine assembly includes first and second liquid ducts having respective inlets and outlets. The first duct has an interior volume greater than the second duct, and the outlet of the first duct is at a level higher than the outlet of the second duct. A pump pumps liquid to the ducts, and a valve controls the flow of liquid from the pump to the inlets of the first or second ducts. The valve includes a housing having an inlet connected to the delivery side of the pump and first and second outlets connected respectively to the inlets of the first and second ducts. A valve closing element within the housing is movable from a stable first unblocking position spaced from and aligned with the first outlet to a first blocking position closing the first outlet, such that the pumped liquid flows to the second duct. At the same time, a bypass allows some pumped liquid to bypass the closing element into the first duct.

Abstract: Means for cleaning the sealing surfaces of coke oven leveling doors and frames, the cleaning means being installed on a coke-pushing machine without any increase in the normal overall length thereof. A carriage extends between and is movable along guideways mounted on the side walls of a surrounding casing, the carriage being provided with liquid nozzles adapted to be directed at the sealing surfaces of the leveling door frame and the sealing surfaces of the leveling door when rotated upwardly. Nozzles are connected through hoses to a supply of high-pressure liquid, the arrangement being such that as the carriage moves along the guideways, high-pressure liquid issuing from the nozzles will clean the sealing surfaces of a leveling door frame and a leveling door when it is rotated upwardly.

Abstract: An improved combination pool skimmer is disclosed which may be adapted to provide surface water skimming, or subsurface water sweeping or vacuuming of a swimming pool. The skimmer has a body including a throat for entry of water into the skimmer and a well located below and communicating with the throat. The skimmer has a single relocatable cover plate adapted to be located in the well of the skimmer to cover the skimmer pump outlet port. The well has a peripheral shoulder adjacent to the throat on which a removable strainer basket is supported. The strainer basket has an annular ring or flange which is disposed on this shoulder for this purpose. The cover plate may be supported on the basket annular ring to cover the basket and control entry of water into the well. A snap-in hinged weir and a snap-in hinged equalizer flap valve are provided in the skimmer which are not subject to corrosive decay by pool chemicals.

Abstract: A machine (1) suitable for removing sludge from the bottom of a storage tank which comprises a central body (15) rotatable about which is a casing (2, 3) provided with two substantially diametric nozzles (4, 5) arranged so that liquid emerging therefrom sweeps substantially only in one plane, a turbine (12) rotating the casing about the central body (15) and means (18) ensuring that when the casing (2, 3) is continuously rotated, alternately one nozzle is closed for substantially 180.degree. rotation while the other nozzle is open. Such machines may be suspended above the floor of the tank adjacent to a wall thereof.

Abstract: A portable lavage device comprising a moveable tank for holding a cleansing liquid, a pump coupled to the tank for circulating the cleansing liquid under a pressure which varies from a maximum to a minimum and spaced nozzles coupled to the circulating pump and arranged to spray the cleansing liquid under varying pressure against an item to be cleaned.

Abstract: A forward motion arresting means is added to a fluid powered lance to reduce the harmful effect of the stopping of the lance forward motion. A plug member mounted on the lance mates with a body member within the housing to prevent fluid flow and reduce the lance forward motion. Rearward motion arresting is achieved by the addition of a reservoir portion which acts as a hydraulic stop in conjunction with the lance piston.

Abstract: Method and apparatus for washing dishes allowing independent control of washing liquid flow to upper and lower baskets. A valve allows selective reduction of liquid flow to an upper washing arm and/or by-passing liquid so that it does not flow through the washing arm nozzles.

Abstract: An apparatus for spray-etching includes a chamber having a surface on which items to be etched can be mounted. A valve has two spray nozzles to which an etchant solution and rinse water respectively are supplied. The valve is movable between a first position in which the etchant spray nozzle is directed at the aforementioned surface and the rinse water nozzle is directed into a water drain well, and a second position in which the rinse water is directed towards the said surface and the etchant nozzle is directed to an etchant drain well. Liquid from the chamber falls into an appropriate one of the drain wells, dependent on the position of the valve. The valve prevents contamination of the etchant by the rinse water.