Illinois Society of Architects · Chicago · leaf 245
nd a goodchain, and above it space for the return of the chain. If it is to be coristructed to giveas long service as the screw it is consider-ably more expensive. The above described coal handling equip-ment is desirable only where the capacity ofthe plant is comparatively small, and fre-quently… … Steel Screw Conveyer. stituted for this type and should be so sub-stituted if the investment is permissible. Bucket elevators and screw conveyers ofsubstantial type can be erected for from$750 to $1,500 under ordinary conditions, pro-vided unnecessary expensive features of con-struction are…
Architecture · Building · Architects
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