Présentation de l'éditeur
Lessons and practical notes on steam, the steam engine, propellers, etc., etc., for young engineers, students, and others - 1860 - CONTENTS - CHAPTER I. STEAM. Steam, 7. Mechanical Effect, 9. Expansion of Steam, 12. Table of Hyperbolic Logarithms, 14. Back Preasnre, 16. Gain by Expanded Steam, 18. EXPdNSION VALVES. Sickels, 19. Sterene, 22. Allen Wells, 23. SLIDE CUT-OFW. ExpIanation, 24. Gridiron Valve, 26. Wabash Valve, 29. OTHER KINDS OF VALVES. Double Poppet, SO. Single Poppet, 31. Hornblowers, 52. Box Valve, 33. Equilibrium Slide, 84. Double Slide Valve, 34. Piston Valve, SS. Long D Slide, 36. Short D Slide, 37. Worthington Pump Valve, 8. Pitts burg Cam, 39. CHAPTER 11. THE INDICATOR AND INDICATOR DIAGRAMS. The Indicator, 41. Cylinder Diagrams, M. Air-pump Diagrams, 66. Power Required to Work the Air-pump, 60. THE HYDROMETER. The Hydrometer, 62. LORS by Blowing-off, 64. Gain by the Use of Heaters, 68. Injection Water, 71. Evaporation, 72. Steam and Vacuum Gauges, 75. CHAPTER IV. CAUSALTIBS, ETC. Broken Eccentric, 7 9. Leaking Vessel, 79. Irregular Feed, 80. Foaming, 81. Hot Condenser, 83. Getting Under Way, 85. Coming into Port, 86. Gcsling Boilers, 88. On Coming to Anchor, etc., 89. Management of Fires, 90. Patching Boilers, 93. Sweeping Flues, 95. Ash Pits, 95. Smoke-pipe Stays, 96. Grate Bars, C., 96. Broken Air-pump, 97-Brw ken Cylinder-head, 98. Selection of Coal, 98. Safety Yalve, 99-CHAPTER V. Theory of the Paddle Wheel, 101. Centre of Pressure, 114. Screw Propeller, 116. Altering the Pitch, 132. Parallel Motion, 133. Strength of Mate rials, 136. Surface Condensers, 141. Cylindrical Boilers, 145. Boiler Explosions, 148. Horse Power, 160. Vibration of Beams, 152. Marine Economy, 164. Limit to Expansion, 166. The Proper Lift for a Valve, 156. Temperature of Condenser, 166. CHAPTER W. WESTEEN RITEB BOAT EXLlIKE. Western River High-pressure En, he, 159. Side Elevation, 159. End View, 160. Explanations of Diagrams, 160. Hartupers L i r , 165. Stern Wheel Boats, 167. Dimensions and Proportions of the Magnolia, 169. BOILERS, ETC. Water-Tube Boiler, 172. Horizontal Fire Tube, 173. Extracts from Report of Experiments made to Determine the Relative Efficiency of the Two Boilers, 174. Western River Boilers, 179. Boiler Flues, 184. Riveting, 186. Superheated Steam, 189. Draft, 191. APPENDIX. MATERIALS. How to Test Iron, 194. Cast Iron, 195. Malleable Iron, 198. Steel, 202. Te nacity of Yekds, 206. Transverse Strength, 206. Resistance to Torsion, 207. Results of Repeated Heating Bar Iron, 201. Strength of Joints of Boiler Plates. 209. TEE ELEMENTS OF MACHIHERY. qotion, 211. Application of Power, 212. The Lever, 215. Inclined Plane, 217. Wheel and Axle, 219. Pulley, 219. Screw, 223. Wedge, 224. Centre of Gravity, 226. Centre of Pressure, 225 Gravity, 225. Displacement of Fluids, 227. Table of Pressure, Temperature, and Volume of Steam, 228. INTRODUCTION. WRITIN a G b ook and then apologizing for having written it, is hardly in accordance with our convictions but considering, nevertheless, the eminent talent which has preceded us upon the subject we have taken up, a few remarks of explanation may not be out of place. Books heretofore appearing on the steam engine, have been of two classes, or the work itself has been divided into two parts-the one for the theorist, the other for the practical man. In the one case long mathematical formulas have been produced, and in the other nothing but simple rules...
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