. Railway mechanical engineer . n as the Par-abolic cutter, designed to reduce production costs. Conflict-ing theories in cutter design were either proved or disprovedby practical application to production work and it was de-cided that in order to make a milling cutter tooth of uniformstrength throughout its length, its shape should be that ofa parabola slightly modified at the small end. The number of teeth used is nearer to that of the conven-tional fine tooth cutter than to that of the coarse tooth order to get the most efficient chip thickness pjer tootliwithout excessive periphera
. Railway mechanical engineer . n as the Par-abolic cutter, designed to reduce production costs. Conflict-ing theories in cutter design were either proved or disprovedby practical application to production work and it was de-cided that in order to make a milling cutter tooth of uniformstrength throughout its length, its shape should be that ofa parabola slightly modified at the small end. The number of teeth used is nearer to that of the conven-tional fine tooth cutter than to that of the coarse tooth order to get the most efficient chip thickness pjer tootliwithout excessive peripheral speed a fairly large number ofteeth was found desirable. Parabolic cutters are made inplain-side and end-mill types as well as for special increased interest of railroad shop men in milling as anefficient method of performing many machine operations onlocomotive parts makes the subject of cutter selection impor-tant at the present time. Among other types the Parabolicmilling cutter will receive careful National Parabolic Milling Cutters Safety Features Incorporated in Rip Saw A SELF or power feed rip saw, placed on the marketrecently by the Oliver Machinery Company, GrandRapids, Mich., has been designed with special atten-tion to safety features. In addition, the dust chute is soarranged as to be readily connected to the exhaust systemand thus eliminate flying sawdust which would otherwise
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
