THE MECHANICAL HANDLING OF MATERIALS 285
with the Arrol-Foulis charging machinery, and is most suited to this owing to the motive power being water. The whole machine is self-contained. The frame is formed of substantial mild Steel plates and angles rigidly connected together and mounted on cast-iron brackets (/i) which carry the traversing carriage wheels (Z>). A three-cylinder hydraulic motor (C) is fitted at the front of the machine and is geared to the carriage axles (D) by cast-steel bevel wheels (E). The method adopted
Fig. 202.—The Hunttsb-Baknbtt Hydraulic Pusher.
for pushing tne coke through the retort is as follows:—A powerful telescopic ram (F) of hard, solid drawn, steel tube, provided with. suitable pusher head (ff) and fitted with internal drawback arrangement is used. The pushing head of the ram is water-cooled (ff) to ensure that no undue lieating may occur, and the ram works in a cylinder (K) of mild steel supported in cast-iron guides (L). These guides are mounted on a suspended beam (Jf) carried by chains (0) at front and backends. This suspended beam can be raised or lowered to snit the several tiers of retorts,.