WHAT'S AVAILBABLE TODAY IN FREQUENCY CHANGERS
Power, Frequency, and Cost
Motor-generators, Vibrators, Solid-state units compared
by Ante Lulic & Michael S. Inoue
UNDERWATER ROBOT TRIMS CHRISTMAS TREE
Electrohydraulically guided from console at surface
Wields socket wrench for work on ocean floor
PHONOGRAPH USES PLASTICS TO MAKE A SNAP OF ASSEMBLYAMPING TAPES FOR VIBRATION CONTROL
Injection molded player case, assembled without threaded fasteners
TRACTOR IS FLEXIBLE AND FOLDABLE
Hinged chassis flexes joints equilibrium over rough terrain
Heavy-duty vehicle folds to 2/3 over all size for shipment & storage
STEPLESS DRIVE SMOOTHS SPEED CHANGES FOR SMALL VEHICLES
V-Belt joins speed-responsive clutch, torque-responsive sheave
Self-regulating transmission for 2-12 hp gasoline engines
THIN-WALL CERAMIC HONEYCOMB STANDS UP TO THERMAL SHOCK
Undamaged by repeated thermal cycling or continuous operation at 2200F
for Insulators, Heat Excha ngers, Infrared Burners
By C. L. Goss
7 MORE WAYS TO USE BALL CHECK VALVES
Triple balls, exploded balls, spaced balls, practical applications
By Marvin D. Nelson
SOME ANSWERS TO A QUESTION: WHO SELECTS MATERIALS?
Roundup of opinion among 80 engineers in over 50 big companies
SHORTER WAY TO COMPUTE STRESS IN CURVED BARS
These new equations quickly yield stress concentration factors & stresses
by W.H. Sparing & R.P. Rudwill
FLIGHT WITHOUT RUNWAYS PROVED FEASIBLE (VTOL AIRCRAFT)
Soon aircraft that rise vertically for commercial flights & military missions
THE SPECIALTY SUPPLIER CAN HELP YOUR DESIGN
Don't overlook his experience & advice
WEAR RESISTANCE BY THE YARD
Thin-gage stock with tungsten-carbide coating
by: Robert E. Abbott
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