. Electric railway review . he %-inch iron rings, the twelve%-inch bolts were withdrawn and the mica segments were alltrimmed almost level inside with the copper segments of thecommutator. The commutator was then ready to be placed on the coreor barrel, after setting the rear mica ring in place. Whenthe commutator was placed in position on the core and thefront ring adjusted and bolted it was seen, by gauging fromthe rocker arm while the machine was slowly revolved, thatthe commutator was only about Vs inch out of true. My next step was to make all secure, and using a carbo-rundum truing devic
. Electric railway review . he %-inch iron rings, the twelve%-inch bolts were withdrawn and the mica segments were alltrimmed almost level inside with the copper segments of thecommutator. The commutator was then ready to be placed on the coreor barrel, after setting the rear mica ring in place. Whenthe commutator was placed in position on the core and thefront ring adjusted and bolted it was seen, by gauging fromthe rocker arm while the machine was slowly revolved, thatthe commutator was only about Vs inch out of true. My next step was to make all secure, and using a carbo-rundum truing device fastened to the rocker arm, the com-mutator was made true. The time required for this job was as follows: Knockingdown the commutator, 13 days; rewinding and soldering, 8days. USEFUL ARMATURE STANDS. The accompanying halftone engraving illustrates some ofthe interesting armature handling methods practiced in theshops of the Winona Railway & Light Company at Winona,Minn. In the foreground is an armature truck, the con-. Useful Armature Supports. venience of which is readily apparent. To the right is anarmature rack for winding or repairing purposes. In the cen-ter is shown an armature storage rack, which occupies a floorspace of 3 feet 6 inches by 3 feet 3 inches. This rack willaccommodate seven or nine armatures and its construction issuch that it need not be placed against the wall. To the leftis a pit jack for removing armatures from a car. By the useof this jack it is necessary only to swing down one side of thelower half of the motor frame, then pick the armature up withthe jack from the lower half of the motor frame, and, afterlowering the armature to clear the truck rigging, push outfrom under the car. The device consists principally of anold retired track jack mounted on a roller table and having apair of Y-ended horns bolted to its head. These devices, together with a number of other labor-saving tools used in the company shops, were designed andmade by N. M. Argabrit
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectstreetr, bookyear1906
