Belt Conveyors and Belt ElevatorsBelt Conveyors and Belt Elevators by Frederic Hetzel Valerius, first published in 1922, is a rare manuscript, the original residing in one of the great libraries of the world. This book is a reproduction of that original, which has been scanned and cleaned by state-of-the-art publishing tools for better readability and enhanced appreciation. Restoration Editors' mission is to bring long out of print manuscripts back to life. Some smudges, annotations or unclear text may still exist, due to permanent damage to the original work. We believe the literary significance of the text justifies offering this reproduction, allowing a new generation to appreciate it. |
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Other editions - View all
Common terms and phrases
abrasion angle B. F. Goodrich balata belts bearings belt conveyor belt elevators belt runs belt speed belt tension bend boot bottom bucket elevators capacity carried cent centrifugal force coal coefficient coefficient of friction compound continuous bucket conveyor belt cubic diameter duck edge elevator belts fabric fastened feed feet per minute filler five-pulley idlers flanges flat belt foot pulley foot shaft foot wheel grain belts grain elevators grease grease lubrication handling head pulley head wheel horizontal pulley inches wide inclined elevators lagging less loading chute loading point lubrication Main Belting manufacturers material patent pick-up plate plies pounds pulley side ratio return belt return run roller rubber belts rubber cover screw shown in Fig shows side-guide skirt-boards slip spacing spill steel stitched canvas belt stretch strip surface T₁ T₂ Table 35 take-up tensile strength threads three-pulley idlers tripper troughing idlers vertical wear weight width
Popular passages
Page 183 - on the angle of belt wrap and the coefficient of friction between the belt and the pulley rim; in an elevator both of these are fixed within certain limits, and it is not so easy to increase the driving effect as in a belt conveyor
Page 18 - rubber conveyor belts and all transmission and elevator belts are straight-ply belts, that is, of uniform thickness in the body of fabric. The plies are held together by the adhesion between the duck and the layers of friction rubber; the better the rubber compound, the stronger the adhesion and the longer it will retain its
Page 60 - The belts in the conveying system could not be made to run true on the troughing idlers. To overcome their riding out of position, long boards were fixed at the sides of the
Page 2 - a broad endless strap of thin pliant leather or canvas revolving over two pulleys in a case or trough.
Page 92 - in pounds per inch of width; S =belt speed in feet per minute; B = width of belt in inches.
Page 238 - the coefficient of friction between the belt and the rim of the pulley.
Page 8 - From these observations Mr. Robins concluded that the sole function of the fabric in a rubber belt should be to give the belt tensile strength and that it should be protected from injury by a cover of rubber compound that would resist abrasion better than the cotton threads or the thin layer
Page 111 - and when placed at the foot of the conveyor it requires no extra bends in the belt. In the hands of a careless man, a screw take-up may pull a belt much tighter than is necessary for driving contact, and thereby injure it or pull the lacing apart.
Page 10 - and all similar materials. Before that time most of the business in this line lay between the belt maker and the pulley maker, neither interested in the other's product and neither capable of giving engineering advice nor of insuring definite results from the operation of the conveyor.