stationary bolier to steam which is provided with wheels, running along the longitudi- On rotating the endless screw the rocking shaft rotates pipes running along the wall of the retort house. To this nal rails; other wheels are mounted on a carriage or cradle, partially, by which means the radial… … runs along the side of the girders that carry the cradle with will thus be seen that the cradle may be moved horizontally hight of any one of the retorts in the bench or setting. In the engine. On the girder there is a bracket placed, and order to maintain the upper surface of the scoop perfectly…
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