Handbook of mechanical and electrical cost data, giving shipping weights, capacities, outputs, and net prices of machines and apparatus, and detailed costs of installation, maintenance, depreciation and operation, together with many principles and data relating to engineering economics (1918)
Gillette, Halbert Powers, 1869-, Dana, Richard Turner, 1876-1928, joint author · New York, McGraw-Hill · leaf 1388
r the elevating operation does not differ sogreatly in amount for the two types, but the difference is quitemarked in the conveying operations, conveyors with the bucketsrigidly attached to the chains being virtually flight conveyors ofan inefficient type and therefore extremely lavish in the use… … Fig. 25. Average cost of standard bucket conveyors for handlingfine coal in rigid buckets, spaced 18 inches. the use of power and are rapidly displacing the less efficient thoughvery much cheaper conveyor with rigid buckets. The spacing of the buckets not only materially affects the ca-pacity of…
