Lumber, its manufacture and distribution . hownin Fig. 80, A beingthe driving pulleyand B the counter-Fig. 80.—An Under-cut Trimmer Saw in Cutting Posi- weight. The sawstion. A. Drive Pulley. B. Counterweight. When the mav Ke raised bv Saw is not in use it is dropped below the Table. j. , i i loot pedals connect-ed to the arms sup-porting the saws, by hand levers, by compressed air or by pedals are used, the saws are brought into a cutting positionby one of the trimmer loadermen, while a trimmer leverman is requiredwhere hand-lever or air-control is used. The foot-pedal control ma
Lumber, its manufacture and distribution . hownin Fig. 80, A beingthe driving pulleyand B the counter-Fig. 80.—An Under-cut Trimmer Saw in Cutting Posi- weight. The sawstion. A. Drive Pulley. B. Counterweight. When the mav Ke raised bv Saw is not in use it is dropped below the Table. j. , i i loot pedals connect-ed to the arms sup-porting the saws, by hand levers, by compressed air or by pedals are used, the saws are brought into a cutting positionby one of the trimmer loadermen, while a trimmer leverman is requiredwhere hand-lever or air-control is used. The foot-pedal control may be used in mills having a daily capacityof 60,000 board feet or less, while for greater capacities one of the otherforms is necessary, because the loaderman cannot then perform bothloading and control work. An under-cut trimmer may be used for adaily capacity of 150,000 feet when fitted with lever control. The load demand on a trimmer lasts only for a very short period,therefore, the power is largely consumed in running idle saws. The. THE SLASHER 107 power demand varies from 15 horse-power for medium-sized to 50 forheavy-duty trimmers. The speed at which trimmer saws are runvaries from 600 to 800 revolutions per minute. THE SLASHER » The slasher is used to cut slabs, edgings and other mill refuse intosuitable lengths for firewood, lath stock, or for any other purposes forwhich such material may be used. The slasher has a battery of saws arranged in a horizontal line,above a table up which passes the mill refuse which is to be cut into
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1922
