1851 Great Exhibition: Official Catalogue: Class VII.: William Tutin Haycraft

161. HAYCRAFT, WILLIAM TUTIN, M.D., Greenwich — Patentee.

Model of the "anhydrous" steam-engine; designed to work with "dry" steam, by means of a "separator" of new construction, and a "siccator," to which is added an expansion valve; this valve is specially applicable to locomotive engines from its readiness of action. The object of this engine is to prevent boiler-explosions. The cylinder is provided with a steam-jacket, which is essential to its operation.

[The object of this invention is to separate the steam from the water which generated it, and to apply it, in its separated state, to the working of the engine. For this purpose an apparatus, called a "separator," is employed; another, called a "siccator," is also used to keep up the heat of the steam in its separate state, otherwise it would condense and lose its power.]

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