| 摘要 |
564,199. Spray producers. ROCKWOOD SPRINKLER CO. OF MASSACHUSETTS. Jan. 9, 1943, No. 453. Convention date, Nov. 6, 1941. [Class 69 (iii)] A nozzle for fog production comprises a body having circular passages 14 for the liquid, which passages are convergent and the centre lines of which meet in the outer surface of the body. Figs. 8 and 9 show a rose comprising different sized apertures 30, 32, 34, each of which are formed by convergent passages. U.S.A. Specification 2,318,769 is referred to. |
