Show PROCESS FOR AERATING LIQUID on april 2nd and 1918 frederick B kollberg of bisbee arizona and max kraut of los angeles were allowed an united states patent on a process for aerating liquid the patentees assigning the patent to the southwestern engineering company of los angeles the manufacturer of the K K flotation machine the claims made for the process are I 1 A process for separating minerals which consists in moving a liquid pulp along I 1 a partially aylin cylindrical adrical passage injecting air into said passage upon the surface of said liquid pulp holding said air in said passage so that the liquid pulp passes and draws a film cherof over said air thereby forming bubbles from said liquid pulp and moving said bubbles along said passage 2 A process for separating minerals which consists in moving a liquid pulp containing a percentage of oil therein along a partially cylindrical passage placing the surface of said liquid pulp in contact with air inducing the same into the passage upon the surface of said liquid pulp pocketing the air between the surface of said liquid pulp and a wall of said passage so that the liquid pulp passes and draws a film thereof over said pocketed air thereby forming oleaginous bubbles and moving said bubbles along said passage |