. The manufacture of pulp and paper : a textbook of modern pulp and paper mill practice. own the blocks, or tohaving men undermine a pile. Cross conveyors are also usedto distribute wood on very large piles. A very good arrangement for keeping the portable crossconveyors supplied with blocks at the least risk of life is shownin Fig. 18. The cable A carrying anchor E, runs over pulleyblock F (attached to the conveyor frame), over pulley block H(near the foot of the pile), and is wound in either direction on themotor-driven drum K, which is preferably situated on a highbank. Otherwise, the cable
. The manufacture of pulp and paper : a textbook of modern pulp and paper mill practice. own the blocks, or tohaving men undermine a pile. Cross conveyors are also usedto distribute wood on very large piles. A very good arrangement for keeping the portable crossconveyors supplied with blocks at the least risk of life is shownin Fig. 18. The cable A carrying anchor E, runs over pulleyblock F (attached to the conveyor frame), over pulley block H(near the foot of the pile), and is wound in either direction on themotor-driven drum K, which is preferably situated on a highbank. Otherwise, the cable should pass over a high pulley, inorder to keep the anchor well up on the pile. The reversingmotor is geared to two cable drums; it causes the heavy anchor Eto be drawn back and forth across the working face of thestorage pile and pulls down the wood from the top of the a device of this kind, dynamiting is unnecessary, and men 30 PREPARATIOX OF PITPWOOD §2 engaged in loading the conveyors seem to be laboring undermuch less strain than those working where dynamite is Fig. U 41. Pulpwood Reclaimer.—Another apparatus for draggingdown wood from the storage pile is shown in Fig. 19. It consistsof a carriage A running on track T along the foot of the pile;it carries the motor Af and bottom end of beam E. At the top ofthe beam are wheels W, which ride on light rails (laid on top ofthe pile), as the carriage moves along. A chain F, driven by amotor-driven sprocket N, at thf foot of the beam, carries spurswhich catch into the blocks on the down journey and dragthem dcwL the pile to the conveyor H. When a gully hasbeen dug, the carriage is shifted a little. The beam alwaysadjusts itself to the angle of repose of the pile. Except for theoccasional necessitj of using dynamite in the winter, no man runsthe risk of climbing the pile; even then, the beam makes theascent and descent much safer than usual. 42. Power Required to Operate Conveyors.—Conveyors maybe either ho
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpaperma, bookyear1921
