All About Engines

346 Index Centre of gravity, 156 Centrifugal force, 111 ; governor, 282 ; pump, 142, 305 Chain-grate stoker, 86 Charcoal, 328 Charlotte Dundas, the, 274 Chingford reservoir, the, 203 Circulation, steam, 283 “ Clearance,” 282 Clerk, Mr. Dugald, 200 Coal, 325 ; anthracite, 196; bitu- minous, 197 ; conservation of, 330, 339 J consumption of, 272 ; energy- in, 311 ; heat value of, 57, 84 ; re- sources of, 327 et seq. Coal-gas, 192 Cody, S. F., 228 Coke, 916 Combustion chamber, 232, 250 Combustion, internal. (See Internal combustion) Comet, the, 274 Compound engine, 136, 142, 269, 278, 284 Compressed air for gas engines, 199 Concentric bushes, 172 Condensation of steam, 40 Condensers, 6, 137, 282; jet, 50, 137, 285 ; surface, 50, 137, 285 ; tur- bine, 174 ; Watt’s, 50 Condensing engines, compound, 284 Connecting rods, 8, 241 Constancy in engines, 122 Corliss valves, 125, 213, 267 Cornish boiler, the, 63 ; valve, 94 “ Coupled engines,” 269 Crank, the, 8, 13, 51, 113 " Critical speed,” 156 Cross-head, the, 7, 24 Crossley governor, the, 188 Crown valve, 94 Cugnot’s, W. J., steam carriage, 253 Curtiss, Glenn, 224 Curves, railway, 271 “Cut off,” 15, 45, 120 et seq., 143, 267, 318 Cycle, motor, engine, 220 et seq. Cylinders, 9, 13; double-acting, 52» gas engine, 198; high pressure, 281 ; intermediate pressure, 281 ; low pressure, 281; multiple, 146; oscillating, 277 ; steam engine, 6; Watt’s, 48, 49 D “ D ” VALVES, 118, 267, 281 Daimler engine, 207, 213 Damper lever in locomotive, 265 Daracq engines, 213 Darwin, Erasmus, 252 Dash-pot, the, 125, 128 Davy, Sir Humphry, 310 “ Decapod,” the, 270 De Laval, Dr. G., 148, 164 Diaphragm, turbine, 162 Diesel engines, 234, 235, 244, 245, 337 Donkey boiler, 283 Double-acting engines, 201, 243 Double-beat valve, 94 Double-cylinder engines, 220 Double-ended, boiler, 283 Double-ported valve, 119 Dowson, Mr. J. Emerson, 193 Draught, 87 et seq., 265 Driving wheels, 155, 270 Drop valve, 127 Drums, boiler, 77 ; high pressure, low pressure, 173 ; turbine, 170 et seq., 294 Dry air pump, 286 Dry-back boiler, 62 Dryer, steam, 96 "Dual” pump, 285 Dundas’s, Lord, steamboat, 274 Dynamometers, absorption, 323, 324, 325 ; transmission, 325 Dynamos, 187, 211, 305 E Eccentric, the, 10, 13 et seq., 240 Ejector, pump, 180, 182 Elder, John, 278