CHAPTER VI.
DOUBLE-ACTING STEAM ENGINE.
The Single-acting Engine unfit to impel Machinery. — Various Contrivances to adapt it to this Purpose. — Double-Cylinder. — Double-acting Cylinder. — Various modes of connecting the Piston with the Beam. — Rack and Sector. — Double Chain. — Parallel Motion. — Crank. — Sun and Planet Motion. — Fly Wheel. — Governor. [91]
CHAPTER VII.
DOUBLE-ACTING STEAM ENGINE,
continued.
On the Valves of the Double-acting Steam Engine. — Original Valves. — Spindle Valves. — Sliding Valve. — D Valve. — Four-Way Cock. [108]
CHAPTER VIII.
BOILER AND ITS APPENDAGES.
Level Gauges. — Feeding apparatus. — Steam Gauge. — Barometer Gauge. — Safety Valves. — Self-regulating Damper. — Edelcrantz's Valve. — Furnace. — Smoke-consuming Furnace. — Brunton's Self-regulating Furnace. — Oldham's Modification. [117]
CHAPTER IX.
DOUBLE-CYLINDER ENGINES.
Hornblower's Engine. — Woolf's Engine. — Cartwright's Engine. [134]
CHAPTER X.
LOCOMOTIVE ENGINES ON RAILWAYS.
High-pressure Engines. — Leupold's Engine. — Trevithick and Vivian. — Effects of Improvement in Locomotion. — Historical Account of the Locomotive Engine. — Blenkinsop's Patent. — Chapman's Improvement. — Walking Engine. — Stephenson's First Engines. — His Improvements. — Liverpool and Manchester Railway Company. — Their Preliminary Proceedings. — The Great Competition of 1829. — The Rocket. — The Sanspareil. — The Novelty. — Qualities of the Rocket. — Successive Improvements. — Experiments. — Defects of the Present Engines. — Inclined Planes. — Methods of surmounting them. — Circumstances of the Manchester Railway Company. — Probable Improvements in Locomotives. — Their capabilities with respect to speed. — Probable Effects of the Projected Railroads. — Steam Power compared with Horse Power. — Railroads compared with Canals. [145]