1851 Great Exhibition: Official Catalogue: Class V.: Thomas Craddock
From Graces Guide
76. CRADDOCK, THOMAS, Ranelagh Works, Pimlico — Inventor and Manufacturer.
Patent high-pressure, expansive, and condensing steam-engine, with tubular boiler and regulating damper. The novelty consists in the mode of condensing the steam and obtaining the vacuum without cold water, in the mode of fixing the cylinders of the engine at an angle, so that the two connecting-rods take hold of the same crank-pin, and in the construction of the valves, the expansive gear, and the regulating damper.