. Railway mechanical engineer . e sake of reducing the time percut to a point within the limits of efficiency but also to ]iro-long the life of the saw. Increase Pressure With Number of CutsA saw wears as it is used, and the area of the teeth in con- tact with the work becomes greater as the number of , and therefore, in order to maintain tlie same cut-ting speed, the pressure must l)e increa.^ed from time to may be taken as a maxim of hack saw thrift tliat, for ef-ficiency, the weight must i)e increased as the number of cutsj)rogresses. In connection with the necessity fo
. Railway mechanical engineer . e sake of reducing the time percut to a point within the limits of efficiency but also to ]iro-long the life of the saw. Increase Pressure With Number of CutsA saw wears as it is used, and the area of the teeth in con- tact with the work becomes greater as the number of , and therefore, in order to maintain tlie same cut-ting speed, the pressure must l)e increa.^ed from time to may be taken as a maxim of hack saw thrift tliat, for ef-ficiency, the weight must i)e increased as the number of cutsj)rogresses. In connection with the necessity for the proper adjust-ment and of weight it is interesting to note thatequal diameters of work of the same material will be cutat about the same rate, without regard to their comparativeshapes. That is, 1^ in. square, round, or cllii)tical ijarsof the same grade of steel would cut at the same rate. Angleirons, channels, and tees of the .same greatest dimensions,will cut about alike, provided the\- are properly placed in. Proper ^^^^N^^Mw^^^^^^^^ Improper
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
