VORRICHTUNG ZUM ERZEUGEN VON SCHAUM.

摘要

A foam generator, e.g. for water-wax mixture for the surface preservation of motor car bodies, consists of four concentric tubes in which the water-wax mixtureis mixed with air and kept in turbulent motion. The flow is reversed several times at the ends of the tubes and is broken up by quadrants in the annular spaces before it is emitted as a uniform foam.