SECTIONAL ELEVATION
[(Larger view)]

CROSS-SECTION

A. DETAIL OF TRAVELING BLOCK

B. DETAIL OF TOP SHEAVE C. DETAIL OF LOWER SHEAVE.

Each of the first two of these traveling gantries used was equipped with a belt conveyor working on a cantilever arm, as shown by Figs. 3 and 4, [Plate XXI], and Figs. 1 and 2, [Plate XXIV]. In using these belt conveyors, the concrete was dumped from the Stuebner bucket into a hopper, Fig. 1, Plate XXIV, with an adjustable slot in the bottom, under which the belt ran.