. Canadian forest industries July-December 1919. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. August 1, 1919 CAN ADA LUMBERMAN AND WOODWORKER 81 Do you know that the centrifugal force in belts at high speed reduces their driving power until at about 9600 F. P. M. a belt is incapable of transmitting power? All such factors are taken into account by our Engi- neering Department when they de- sign standardized belt drives. Con- sult them about your This is a 12-inch Spartan Double Belt, operating a 50 horse-power Gas Compressor. Its cost t
. Canadian forest industries July-December 1919. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. August 1, 1919 CAN ADA LUMBERMAN AND WOODWORKER 81 Do you know that the centrifugal force in belts at high speed reduces their driving power until at about 9600 F. P. M. a belt is incapable of transmitting power? All such factors are taken into account by our Engi- neering Department when they de- sign standardized belt drives. Con- sult them about your This is a 12-inch Spartan Double Belt, operating a 50 horse-power Gas Compressor. Its cost to date is ^c per horse-power per week. When this belt had been in use 18 months, the engineer wrote us that it had giv- en double the length of service of belts previously used. This has now been in use over four years and is still going strong. TOP NOTCH This is another case where top-notch efficiency and economy have been obtained by simply installing the right belt for the work to be done. For many years Spartan Belting has been dominat- ing the hard drives that destroy other belts. That experience ranks it as top notch in leather, in tannage and in workmanship. It is unusually pliable, wonder- fully elastic, it is the greatest of pulley grippers and without an equal for high speed, overloa'l drives or where unfavorable conditions exist. Spartan well exemplifies the three principles back of Graton & Knight Standardized Series Leather Belts: First, they are made of the right material—leather. Second, they are tanned in our own tannery specific- ally for belting use, thus assuring the right kind of leather. Third, they are graded into a Standardized Series-—a belt for each class of power transmission requirements—standardized in manufacture and stand- ardized for the work to be done. Certain articles can be tested in a short time—not so belting. It takes years to test out the correctness of principles applied in power transmission. The re- sult of 60 years test of
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
