Practical Gear Design and Manufacture : gear design trends, appliance gears, machine tools, control gears, vehicle gears, transportation gears, marine gears, aerospace gears, gears in the oil and gas industry, mill gears, hypoid gears, face gears, spiroid gears, gear types and nomenclature, gear tooth design, standard systems of gear tooth proportions, preliminary design considerations, design formulas, calculation of gear tooth data, gear rating practice, geometry factors for strength, gear materials, gear manufacturing methods, design of tools to make gear teeth, kinds and causes of gear failures, special design problems, gear reactions and mountings, gear vibration.