Forfatter: A.-M.Inst.C E., George Frederick Zimmer
År: 1916
Forlag: Crosby Lockwood and Son
Sted: London
Sider: 752
UDK: 621.87 Zim, 621.86 Zim
Being a Treatise on the Handling and Storing of Material such as Grain, Coal, Ore, Timber, Etc., by Automatic or Semi-Automatic Machinery, together with the Various Accessories used in the Manipulation of such Plant
34 THE MECHANICAL HANDLING OF MATERIAL
Swing Tray or Finger Tray Elevators and Lowerers with Automatic
Loading and Discharging Gear are adopted for raising heavier packages than
can be moved conveniently by one man, and can often be applied with advantage for
Fig. 32. Cranked Elevator.
much lighter packages, instead of the simple swing tray type. In this modification
(Figs. 33 and 34) each pivoted carrier is composed of a centre bar with transverse arms,
slung from the chains by two hangers, which are usually malleable-iron castings. At
each floor are provided loading and discharging brackets or grids, arranged to intermesh