. Canadian machinery and metalworking (January-June 1919). NORTON COMPANY, WORCESTER, M/\SS . No. 21A The Use of Hard Wheels Log conditions vary with the the winter the logs are frozen or ice-covered ; in the spring the bark is full ofdirt, mud and grit, which cannot be entire-ly, removed by flushing with a hose orrolling around in the pond. All the yeartrouble is usually experienced from iron inthe form of nails, spikes and bolts whichhave been driven into the logs at varioustimes. Stones are frequently picked up inthe bark and completely covered over in afew years. When a saw runs
. Canadian machinery and metalworking (January-June 1919). NORTON COMPANY, WORCESTER, M/\SS . No. 21A The Use of Hard Wheels Log conditions vary with the the winter the logs are frozen or ice-covered ; in the spring the bark is full ofdirt, mud and grit, which cannot be entire-ly, removed by flushing with a hose orrolling around in the pond. All the yeartrouble is usually experienced from iron inthe form of nails, spikes and bolts whichhave been driven into the logs at varioustimes. Stones are frequently picked up inthe bark and completely covered over in afew years. When a saw runs into iron or stones,anything is likely to happen, from the meredulling of the points of the teeth to com-pletely stripping away the teeth and per-haps tearing the whole saw to pieces. Theamount of grinding is necessarily propor-tional to the condition in which the sawscame back to the file room. With knocked-off points and stripped teeth, severalhours of exceedingly hard grinding maybe necessary. Th^s is hard on the wheel,which may wear down in a few ho
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19
