294 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS ß ...-• .-- .•. ? •:' - •.. . .--•,. .::. "'•i.,•11.'? '•- "Tra.•s•/ueer Type :•.:4-'• . Figure 1.--Branson Sonogen AP-25-P ultrasonic generator with Model T-52 barium titanate transducer assembly, Branson Ultrasonic Corp., Stamford, Conn. engine. Figure 1 shows a small compact unit with a two gallon transducer assembly designed for the cleaning of small parts, laboratory glassware, hypodermic syringes, surgical instruments, etc. Since barium titanate can be fabricated into a variety of shapes a tubular crystal as shown in Fig. 2 could be adapted to a continuous processing Figure 2.--Piezoelectric ceramic elements in various forms to provide different focusing patterns, Brush Development Co. Cleveland, Ohio
SONIC EMULSIFICATION 295 Figure &--Raytheon Model DF101 (250 Watt) sonic oscillator, Raytheon Manufacturing Co., Waltham 54, Mass. Figure 4.--Jet-blade assembly of Minisonic Mark II hydrodynamic generator. Key: A, Jet B, ground edge of blade C, blade retaining screws D, jet locking collar E, vibrating blade F, resonant bell.
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