. American engineer and railroad journal . us cutting speeds, with the■constant high speed return stroke, insurethe greatest working economy. This drive has primarily two distinctand necessary advantages over the oldgeared drive, in its simplicity of designand freedom from destructive are no change gears to break orstick on the shafts, and the usual troublesdue to frictions and jaw clutches, togetherwith the splashing of oil over the machine,are eliminated. It is free from the noiseand vibration of the gear driven type,which condition becomes worse as theparts are subjected to
. American engineer and railroad journal . us cutting speeds, with the■constant high speed return stroke, insurethe greatest working economy. This drive has primarily two distinctand necessary advantages over the oldgeared drive, in its simplicity of designand freedom from destructive are no change gears to break orstick on the shafts, and the usual troublesdue to frictions and jaw clutches, togetherwith the splashing of oil over the machine,are eliminated. It is free from the noiseand vibration of the gear driven type,which condition becomes worse as theparts are subjected to wear, on account of the excessive speed of the gears. Such vibration ultimatelyresults in inaccuracy to the work being planed and hence unfitsthe geared drive for accurate planer work. This new speedvariator is free from all these defects and insures the smoothestpossible work, and its simplicity, efficiency and durability willappeal to those interested in this type of drive. To accomplish the shifting of the belt effectively, a pair of. 42 X 42 PL.^NER WITH VARI.\BLE SPKED MOTOR DRIVE.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
