| 摘要 |
676,346. Making foam. ROCKWOOD SPRINKLER CO. Sept. 13, 1950. [Sept, 15. 1949] No. 22516/50. Class 47 (ii). [Also in Group XXIX] Apparatus producing either a stream of foam or fog-foam includes a main nozzle body 2 with valve controlled passages 16, 18 and an attachment 23 held by a cylindrical part 24 locking within the passage 18. A foam-produducing liquid solution passes either through the passage 18 to a fog-foam nozzle 42, or through the passage 16 to an axially aligned tube 32 which is spaced from the body 2 at 34 to allow the ingress of air. A hood 44 surrounds the nozzle 42 and has air inlets 46 and a screen 48. Specifications 564,199 and 567,133, [both in Group XXIX], are referred to.
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