An improved device for spraying insecticides and like purposes

摘要

243,159. Sedgwick, A. S. E. Nov. 20, 1924. Air - pressure sprayers.-An atomizer for giving sprays of variable density comprises a pair of concentric tubes 1, 2 the annular space 3 between which is connected to a regulable lateral passage 8 in a T-piece 11 through which air is supplied. The lower end of the annular spaces is closed by a conical collar 9 through which the inner liquid tube 1 passes, the combined tubes being held in the T-piece by means of a flared nut 12. One limb of the T-piece comprises a nipple 15 con nected to an air supply; the opposite one contains the air passage 8 regulated by a screw 19, and the third limb 11 forms with the tubes 1 an annular passage through which air passes to exert pressure to force liquid up the tube 1.