. Railway mechanical engineer . torto a quick stop. The elimination of cone pulleys and belts makes it possibleto place this motor in any location desired. It also assuresbetter lighting and affords safety to the operator. It isclaimed that the quality of tlie work is improved by the uni-form speeds secured with motor headstocks. The operatorcan always use the exact speed desired and does not wasteany time shifting belts. The construction and design ofthe equipment are such that occasional inspection and lubri-cation will keep the apparatus in good condition almost in-definitely and successful
. Railway mechanical engineer . torto a quick stop. The elimination of cone pulleys and belts makes it possibleto place this motor in any location desired. It also assuresbetter lighting and affords safety to the operator. It isclaimed that the quality of tlie work is improved by the uni-form speeds secured with motor headstocks. The operatorcan always use the exact speed desired and does not wasteany time shifting belts. The construction and design ofthe equipment are such that occasional inspection and lubri-cation will keep the apparatus in good condition almost in-definitely and successful operation is assured even with hardusage and unskilled handling. 652 RAILWAY MECHANICAL ENGINEER Vol. 91, No. 11 MOTOR DRIVE FOR RADIAL DRILLS An interesting application of motors to radial drills hasbeen made by the Cincinnati Bickford Tool Company, Oak-ley, Cincinnati, Ohio, where the variable speed direct con-nected motors are desired with the machine. The illustra-tions show two installations. In one case a 3 to 1 variable. Apptication of Motors to the Arm and at the Top of the Column speed motor is shown mounted on a bracket attached to thearm of the machine and on the opposite side of the motor is geared directly to the arm shaft. The con-troller is mounted on the head of the machine. A constantspeed reversing compound wound motor mounted on top ofthe column is used for elevating or lowering the arm. This
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
