Model of a Fire Hearth for Steam Engines, Rijkswerf Rotterdam, 1844 Canvas Print
Model of a device for the mechanical firing of a boiler; a bucket with movable bottom, operated by a handle with right on a gear, is filled with coal through a small door; the soil is jacked up and the coal is thus transported from below to the grid; two movable parts of the grille, operated with a lever and prevented from relapsing with a pole on a gear quadrant, scoop up part of the contents of the container each time. Scale 1:10 (derived).
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