Sellers and Brace
Apparatus for controlling the rate of fluent material
 Provided by this invention is an improved apparatus for controlling the rate of flow of fluent material by aspiration into a stream of pressurized gas by regulating the gas pressure downstream from the point of admission of the fluent material thereinto independently of the gas pressure at its source. One regulator regulates the gas pressure and velocity prevailing in a gas and fluent material mixing chamber downstream from a fluent material aspirator and the other regulator regulates the gas pressure closely adjacent the downstream end of the fluent material aspirator. Each regulator can be adjusted to vary the flow of fluent material into the gas stream without need for varying gas flow conditions upstream from the fluent material aspirator. 
B C
B05B C23C
inventional inventional
James Y.
Anderson