CHAPTER I.--Mineral Oils: American and Russian; Hydrocarbons. CHAPTER II.</sc>--Fatty Oils: Glycerides; Vegetable Oils; Fish Oils. CHAPTER III.</sc>--Mineral Lubricants: Graphite; Plumbago. CHAPTER IV.</sc>--Greases: Compounded; "Set" or Axle; "Boiled" or Cup. CHAPTER V.</sc>--Tests of Oils: Mineral Oils. Tests of Oils: Fatty Oils MANUFACTURE. CHAPTER VI.--Mineral Oil Lubricants: Compounded Oils; De-bloomed Oils. CHAPTER VII.</sc>--Greases: Compounded Greases; "Set" or Axle Greases; Boiled Greases; Engine Greases. APPENDIX.--The Action of Oils on Various Metals. Index. TABLES: I.--Viscosity and Specific Gravity. II.--Atomic Weights. III.--Origin, Tests, Etc. of Oils. IV.--Action of Oils on Metals. LIST OF PLATES: I.--I. I. Redwood's Improved Set Measuring Apparatus II.--Section Grease Kettle. III.--Diagram of Action of Oils on Metals. 8vo. Cloth. $1.50. * * * * * Mechanical Draft. BY J. H. KINEALY, M. Am. Soc. M.E. _Past President American Society Heating and Ventilating Engineers._ PREFACE. In writing this book the author has assumed that those who will use it are familiar with boilers and engine plants, and he has had in mind the practicing engineer who is called upon to design power plants, and who must therefore decide when it is best to use some form of mechanical draft. The arrangement of the book is what the experience of the author in making calculations for mechanical draft installations has shown him is probably the best. And he has tried to arrange the tables in such a way and in such a sequence that they may prove as useful to others as they have to him. CONTENTS OF CHAPTERS. 1. GENERAL DISCUSSION. Introduction; systems of mechanical draft; chimneys v. mechanical draft; mechanical draft and economizers. 2. FORCED DRAFT. Systems; closed fire-room system; closed ashpit system; small fan required; usual pressure; forced draft and economisers; advantages; disadvantages. 3. INDUCED DRAFT. Introduction; temperature of gases; advantages; disadvantages. 4. FUEL AND AIR. Weight of coal to be burned; evaporation per lb. of coal; effect of rate of evaporation; weight of air required; volume of air and gases; volume of gases to handle; leakage; factor of safety. 5. DRAFT. Relation to rate of combustion; resistance of grate; resistance due to economizer; draft required under different conditions. 6. ECONOMIZERS. Effect of adding; ordinary proportion and cost; increase of temperature of feed water. 7. FANS. Type and proportions of fan used; relation between revolution of fan and draft; capacity of fan.