All About Engines

35° Index Ports, 6, 213 Potential energy, 309 Poundals, 152 Power, definition of, 313 ; measure- ment of, 307 ; water, 328, 341 Pressure, atmospheric, 26 ; boiler, 95 ; gauge of, 4 ; high, 46 ; inter- mediate, 281; low, 146; measur- ing, 315 ; steam, 4, 58 Priestman’s oil engine, 231 el seq. Producer gas, 193, 332 Prony brake, 321 Propellers, 222, 223, 276 Propulsion of ships, 296, 301, 305 Pump, 26, 137, 250; air, 41, 43, 137, 180, 285, 286; centrifugal, 142, 305 ; dry air, 286 ; dual, 285, 286; feed, 100, 287; explosion, 202; general utility, 283; oil, 163; valveless oil, 136; Watt’s, 137; wet air, 286 Q Quadruple expansion engine, 146 Quick-revolution engine, 135 R R. A. F. engine, 229 “ Racing,” 282 Radiators, 210, 218, 306 Rateau’s turbine, 158 Reaction turbine, the, 148, 164 et seq. Reciprocating engines, 105 et seq, 279, 302 Reducing turbines, 176 ; valves, 96 Refrigerating plant, 306 Regulating, feed-water, 90 et seq. Reims aviation meeting, 225 Reversing gear, Howe’s, 257 Rings, packing, 107, 121 “ Rocket,” the, 256, 257 Rod, connecting, 8, 241 Roebuck, Dr., 42 Rolls-Royce engine, 229 Rope brake, 322 Rotary engine, 274, 277 ; motion, 148 ; pump, 180 ; valves, 213 Rotor, turbine, 173, 294 Rowland, Prof. H. A., 311 Royal Commissions on Coal, 329 Rumford, Count, 309 S Safety plug, 83 Safety, provision for, in boilers, 79 et seq. Safety valve, 3, 29 ; dead weight, 81 ; lever, 81 ; spring, 83 ; water float, 82 {see also Valves) “ Sanspareil,” the, 256 "Santa Fé,” the, 270 Saturation, 145 Savery, Captain, engine of, 29 Screws, ships’, 276, 294 Semi-Diesel engine, the, 249 et seq. Sensible heat, 310 i Separator, steam, 96 । Shaft of marine engine, 280 I Shale oil, 338 I Ships, engines for, 245 et seq., 273 et seq., 302 ; propulsion of, 296, 301, 305 ; turbines for, 293 et seq., 300 Side-beam engine, 277 Single-cylinder engine, in, 220 Single-ended boiler, 283 “Single engines,” 269 “ Single,” Stirling’s, 259 “ Six-coupled engines,” 270 Slide valve, 13 Smoke box, locomotive, 265 et seq. Spark arrester, 265 Sparking plug, 211, 218 Speed, “critical,” 156; regulation of 122 et seq. Stays, gusset, 59 ; longitudinal, 59 Steam carriage, Cugnot’s, 253 Steam chart, 6 Steam, condensation of, 32, 40; con- trol of, 13 ; dry, 92 et seq. ; exhaust, 88, 145, 303 ; expansion of, 15, 50, 143 ; latent heat of, 310 ; loss of, 291 ; passages, or “ ports,” 6