. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . themachine. It is possible to get the cuttingand returning speeds adjusted withinwide limits and each can be adjusted in-dependently of the other. With motordrive it is thus possible to use the speedgiving maximum production for all varia-tions in length of stroke; depth of cut andweight on platen. Furthermore the toolis under accurate control; there is no slowdown due to belt slippage under heavyloads and no expense for belt upkeep. I he apparatus consists of a motor,magnet-switch control pa
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . themachine. It is possible to get the cuttingand returning speeds adjusted withinwide limits and each can be adjusted in-dependently of the other. With motordrive it is thus possible to use the speedgiving maximum production for all varia-tions in length of stroke; depth of cut andweight on platen. Furthermore the toolis under accurate control; there is no slowdown due to belt slippage under heavyloads and no expense for belt upkeep. I he apparatus consists of a motor,magnet-switch control panel, a ma t( Iswitch, a field rheostat and a resistei Eoi use in starling and Stopping the parts arc all separate for con-venience in mounting in the most suitablemanner, In addition to the above there can be installed a pendent switch forcontrolling the motor when adjusting thework, and an emergency brake controlpanel for automatically stopping the motorquickly on an overhead or on failure ofthe line voltage. The nmtor must be of special designand very strongly built to withstand the. MASTER SWITCH. severe service. The frame must be heavyand the bearing extra large. In order tocut down the flywheel effect the armatureis built relatively small in diameter, whichpermits the motor to be started, stoppedand reversed quickly. The cycle of operation is as follows:When the master switch is tripped themotor is automatically started and ac-celerated to full speed. The starting isaccomplished by the control panel whichis made up of several magnet switches make the proper connec-tions to the motor and automaticallybrings the motor up to speed step by is impossible for these switches tooperate wrongly as each is interlockedwith the other and a definite cycle ofoperation is obtained. After the motorhas started up the desired speed for boththe cutting and reverse strokes is obtainedby adjusting the field rheostats, which areconnected alternately in the mot
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
