All About Engines

List of Diagrams in Text Vertical Boiler, Cochran type . Lever Safety Valve Water Gauge in part section Diagram showing parts of a horizontal engine . Eccentric .... Simple Form of Governor Simple Slide Valve, with no lap and. no lead. Slide Valve with lap and lead . Model for study of valve motion Papin’s Pump Newcomen’s Engine Watt’s Model .... Watt’s Early Cylinder Watt’s Later Cylinder Watt’s Parallel Motion How a boiler is strengthened lengthways .... How the ends of a boiler are strengthened How the joints are caulked Manhole and Cover Watt’s Wagon Boiler “Dry-back” Boiler Lancashire Boiler Galloway Tubes Adamson’s Ring Expansion Ring Corrugated Flue " Loco ” Boiler PAGE 2 3 5 7 io 12 14 14 17 28 3i 40 49 49 53 59 59 6o 6o 6i 62 63 64 65 65 65 67 PAGE Girder Stays on Loco Firebox . 68 Single-ended Marine Boiler . 69 Double-ended Marine Boiler . 70 Some Vertical Boilers . . 71 Interior of a Stirling Boiler . 74 Exterior of a Stirling Boiler . 75 Section through Babcock and Wilcox Marine Boiler . . 77 Diagrammatic View of Three- drum Boiler ... 78 Dead-weight Safety Valve . 82 Safety Valve with high- and low-water floats . . .83 Simple Stop Valve . . »93 Double-be at or Equilibrium Valve ..... 94 Cornish Double-beat or Crown Valve ..... 94 Ferranti’s Valve . . . 95 Reducing Valve ... 96 Geipel Steam Trap ... 98 Simple Feed Pump . . .100 Hall Feed Pump . . .100 Principle of Injector . .102 Piston for Small Engine . .107 Piston with J unk Ring for Large Engine . . . .107 Metallic Packing (2) . . . 108 Metallic Packing for High Pres- sures (2) . • • 109 I Balanced Crank . . .113 xiii