Abstract: A loop conveyor, nearly round viewed in a plane, has a ring-shaped or loop path for carrying powder material. A material discharge port is provided oppositely to a material receiving port, away by a semicircle therefrom, so that such material may be carried half in the ring-shaped path. The loop conveyor thus arranged is supported by a balance mechanism at two points on the line of the loop diameter which passes the material receiving and discharge ports. The loop conveyor thus balanced rests on a detector, such as a load cell, for electrical detection of a load applied thereto, which is provided orthogonally to the loop diameter. The weight of powder which is continuously carried in a semicircle through the loop path is checked electrically by means of the detector, and a flow rate can be obtained in relation to the weight. A special kind of powder is received and carried continuously in several section rooms formed in the loop path.

Abstract: A process and apparatus are disclosed for mechanically mixing two immiscible liquids and one or more other substances by creating in the upper portion of the apparatus a continuous dual-layer liquid film composed of upper and lower layers of immiscible liquids such as oil and water, into which film one or more substances in the gas, liquid, powder, or a combined phase are dispersed and the resulting dispersed mixture is further mixed and emulsified in the lower portion of the apparatus under the action of shearing forces. A portion of the oil to be mixed may be fed directly into the lower portion of the apparatus for mixing with the pre-emulsified mixture.

Abstract: Powdered material is fed downwardly into the mixing chamber through a vertical feed pipe while liquid is fed into the chamber in the form of annular thin film descending along the inner wall surface of an inverted frusto-conical overflow structure arranged in a liquid tank in encircling relation to the powder feed pipe. Accommodated in the mixing chamber is an agitator disc having a large number of upwardly extending projections co-operable with stationary projections formed on the top wall of the chamber. An annular board is placed afloat on top of the liquid in the tank substantially coaxially with the tubular overflow structure to serve the purpose of preventing any adverse effect of surface disturbance upon the formation of thin liquid film.

Abstract: A controller, such as for maintaining a selected constant rotational speed of a controlled unit, uses analog signals and circuits for fast coarse correction and uses slower digital signals and circuits for additional fine correction. A device is provided for conveniently and accurately changing the setting of the reference analog and digital signals used in the controller.