. Electric railway journal . Omaha Shop Notes—Wheel Press Used for BendingPlatform Knees to special operations. The lathe in the armature shopserves for a commutator slotting machine and an arma-ture taping, banding and testing machine, and in additionis also used in boring bearings. The slotting feature isobtained by a special lathe attachment which takes theplace of the tool post in the carriage. The attachmentconsists of a slotting saw driven by a belt passing arounda small pulley attached to it. A quarter-turn belt drivesthis pulley from the countershaft of the lathe and ispassed over two
. Electric railway journal . Omaha Shop Notes—Wheel Press Used for BendingPlatform Knees to special operations. The lathe in the armature shopserves for a commutator slotting machine and an arma-ture taping, banding and testing machine, and in additionis also used in boring bearings. The slotting feature isobtained by a special lathe attachment which takes theplace of the tool post in the carriage. The attachmentconsists of a slotting saw driven by a belt passing arounda small pulley attached to it. A quarter-turn belt drivesthis pulley from the countershaft of the lathe and ispassed over two guide pulleys, one of which acts as anidler and permits the tool carrier to pass through a con-. Omaha Shop Notes—Armature Lathe and Armature Test Yoke siderable movement with proper tension in the belt. Asan armature banding tool no special equipment aside froma tension device for the band wire is needed, but as soonas an armature is banded and ready for service an arma-ture testing yoke mounted in a slot in the wall just backof the machine is slipped into position for testing. Thebracket supporting the test yoke is mounted on the wallslot so as to be in correct line with any armature set in ELECTRIC RAILWAY JOURNAL 514 ELECTRIC RAILWAY JOURNAL [Vol. XLI, No. ii. the lathe. A series of holes in the slide and a pin permitthe test yoke to be held firmly in position for an armatureof any diameter. When the lathe is not required for handling armaturesit is used in boring the babbitted lining of bearings, aDavis boring bar with two cutting edges being employedfor this purpose. The use of the boring bar eliminateschattering of the tool, performs the work in one-half thetime and assu
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