Farm Motors; Steam And Gas Engines, Hydraulic And Electric Motors, Traction Engines, Automobiles, Animal Motors, Windmills Steam and Gas Engines, Hydraulic and Electric Motors, Traction Engines, Automobiles, Animal Motors, Windmills

PREFACE In preparing this book it has been the intention to include the fundamental principles govirning the construction, working and management of motors which are suitable for farm use. The motors treated include steam engines, gas and oil engines, trac tion engines, automobiles, water motors, windmills and electric motors. The method followed in each chapter was to give 1. the fundamental principles underlying the particular motor, 2. the principal parts of the motor, 3. auxiliary parts, 4. uses to which the particular type of motor is adapted. 5. selection, erection and management of the different machines. While this book was prepared primarily as a text-book for students in agricultural engineering, the subject matter is so presented that it will be of equal value to farmers and to operators of various kinds of engines and motors. Much practical information is included regarding steam, gas and electricity, and the text is ilIustrated with over 275 cuts. Some space is devoted to the more refined methods used in engineering practice for improving the economy of various motors. While many of these methods are not used at the present time in connection with farm motors, it is the opinion of the author that a knowledge of the best engincering practice is not only of considerable educational value, but wiIl lead to the more perfect manipulation of the simple farm motors. The successful rural engineer of the near future wilI be the man that applies proven engineering to the machinery and constructions used on the farm. The author is particularly indebted in the preparation of this book to Professors E. B. McCormick, M. R, Borverman, R. A. Seaton, and W. W. Carlson, of the Kansas StateAgricuItural College to Profeesors Allen and Bursley of the University of Michigan and to Mr. S, Yesner of Boston, Mass. A. A. POTTER. MANHATTAN I, CANBAB, November, 1913. vii CONTENTS FAIILI M o ons I N GEKERAL. . . . . . . . . . . . . . . . . . . 1 Souices of energy-Principles governing the action of vnrioua mechanical motors-Animal motors-Comparison of various types of motors-Power used on farms--Comparative cost of power wit, h various motora-Problems. CHAPTER I1 UKDAMENTAL PRINCIP A L N D DEPIKITIO . K . S . . . . . . . . . B Matter--States of matter-Motion-Form and pressure-Work, energy and pomcr-IIomcpower-Indicated llorsepoic, er-Brake horsepower-Draw-bar horsepower-Nature of heat-Temperature-Thermometers-Units of hcat-h lcclianical equivalent of hettt-Specific heat--Specific gravity-Problems. CHAPTER 111 STEAMG ENERATION A ND STEAM BO ILERS . . . . . . . . . . . ...