Abstract: A reversing switch and more particularly a diaphragm operated electrical polarity reversing switch which has general utility but in the application the reversing switch is disclosed for use in combination with a vehicle mounted spray device including a discharge nozzle which may be used for applying chemicals, liquid fertilizers and other liquids such as when applying such materials alongside of roadways to effectively apply liquid throughout the width of the road right-of-way in which spray nozzles are mounted adjustably on a pivotal arm-type support assembly at the right front of a vehicle and a control arrangement is oriented in the cab of the vehicle to enable the vehicle operator to control the spray apparatus.

Abstract: A reversing switch and more particularly a diaphragm operated electrical polarity reversing switch which has general utility but in the application the reversing switch is disclosed for use in combination with a vehicle mounted spray device including a discharge nozzle which may be used for applying chemicals, liquid fertilizers and other liquids such as when applying such materials alongside of roadways to effectively apply liquid throughout the width of the road right-of-way in which spray nozzles are mounted adjustably on a pivotal arm-type support assembly at the right front of a vehicle and a control arrangement is oriented in the cab of the vehicle to enable the vehicle operator to control the spray apparatus.

Abstract: A spray nozzle to discharge liquid material in a pattern which has the same quantity of liquid material in each increment of the pattern. The nozzle may be used in various orientations in which a supply of pressurized liquid is available with the liquid being discharged generally in a lateral direction in relation to the path of movement of the nozzle thereby rendering the nozzle quite effective for use in discharging liquid fertilizer, growth retardant, insect sprays, orchard spray material and the like in an effective manner. In one embodiment of the invention, a nozzle is provided with a discharge passageway, a downwardly opening, inverted U-shaped extension of the passageway and a curved blade diffuser in the inverted U-shaped extension of the passageway to break up the liquid flow into droplets and to cause the droplets to be discharged in a lateral pattern so that a substantial equal quantity of liquid material is discharged in each increment of the path being traversed by the nozzle.

Abstract: A sprinkler assembly having a discharge nozzle for discharging water at a substantially constant volume and velocity driven rotatably about a vertical axis by a water turbine and gear drive for rotating said nozzle at varying rotational speeds in each cycle of rotation for varying the quantity of water discharged along the radial land areas extending from the axis of rotation as the length of the radial land area varies when irrigating a non-circular land area. A movable diffuser is mounted on the nozzle and is drivingly connected with the gear drive by a cam arrangement to vary the radial length and pattern of discharge of water corresponding to the rotational speed of the nozzle with the greatest radial length of discharge of water occurring when the nozzle is travelling at its slowest rotational speed.

Abstract: A window having a fixed sash which can be easily removed and replaced for cleaning the transparent windowpane or for replacement of the windowpane in the event of breakage. The fixed sash of the window is usually associated with the upper portion of a window frame with a movable bottom vent being mounted in the window frame for vertical movement between a lowered closed position and a raised open position with a latch mechanism securing the movable vent in closed position.

Abstract: A sprinkler for irrigating a square or other polygonally-shaped land area with the sprinkler including a unique structure which will accurately distribute an equal quantity of water on each increment of land area being irrigated. The sprinkler includes a rotatable nozzle in which the speed of the nozzle is varied by a gear drive mechanism which receives its power from a water powered turbine device. The rotational speed of the nozzle is slower when irrigating corner area of the land area being irrigated and faster when irrigating intermediate straight-sided portions of the land area with the nozzle including a diffuser which becomes operative to reduce the length of trajectory of the water being discharged when the sprinkler is irrigating the intermediate straight-sided portions of the land area being irrigated.