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 1376
e, the con-veyor is in operation a reasonable number of hours per year. Once the ordinary screw conveyor is started, it requires littleattention, unless something goes wrong. The legitimate laborcharge, therefore, is low. In order that there may be no inter-ruption of service due to neglect,… … 10 15 20 25 30 35 40LENGTH OF CONVEYOR IN FEET Fig. 14. Depreciation factors for standard screw conveyors. The charge for individual supplies though averaging nearly di-rectly proportionally to the power consumption of the conveyor, ismuch more serious than in almost any other type of conveyor;for…
