GB997088A - Improvements relating to spraying devices - Google Patents

Abstract

997,088. Spray-producers. A. M. LYNN. June 14, 1963, No. 23808/63. Heading B2F. In a portable spraying device high pressure water aspirates spray material, e.g. insecticide, from a readily removable container 1, Figs. 1 and 2, after energizing a rotor 8 which drives an agitator 7 located in the container. The water enters the device through a handle 4 and passes tangentially to a casing 3a, located above a cover 2, in which the rotor 8 is rotatably mounted, via a slidable, triggeroperable, tubular, spring-loaded valve member 20 and passageways 23 and 13. On leaving the casing the water passes through a passage 29 tangential thereto to issue from the nozzle 25 through a tube 26. The latter is coaxial with a smaller diameter tube 30 which extends into a chamber 31 through a side wall of the tube 26. The chamber 31 incorporates a valve seating 36 formed in a member 37 and communicates through an aspirator tube 38 and filter 39 with the contents of the container 1. A manually operable valve 33 having a conical part 35 for engagement with the seating 36 is disposed in the chamber 31, the operating knob 34 of the valve and the associated parts of the body of the device being calibrated to allow quantitative regulation of the aspirated material. A jet diffuser plate 42, Fig. 5, having a generally fan-shaped base 43 and side walls 44 is pivotally mounted on the lower surface 46 of the nozzle 25. A spring 48 is used in the mounting so that the plate may be pressed downwardly and rotated through 90 degrees when not required. In a practical construction the cover 2, arm 3, casing 3a and handle 4 are integrally moulded from a plastics material. The rotor 8 and plug 40 are also of plastics material whilst the member 37, tube 26 and tube 30 are manufactured as a metal assembly.