. The Street railway journal . METHOD OF HOLDING COIL WHILE TAPING IT -iron and press the insulation of the coil to shape. Thepress is heated by a gas flame underneath. Two similarpresses are in use in the winding room. COIL CLAMP One .of the accompanying illustrations also shows a con-venient method of holding a coil while it is being crank on a screw projecting upward through the clamppresses the clamp down against the coil. INSULATION CABINET On the wall of the winding room is a cupboard builtespecially for insulating materials of various kinds. Thelower part holds ten standard leng
. The Street railway journal . METHOD OF HOLDING COIL WHILE TAPING IT -iron and press the insulation of the coil to shape. Thepress is heated by a gas flame underneath. Two similarpresses are in use in the winding room. COIL CLAMP One .of the accompanying illustrations also shows a con-venient method of holding a coil while it is being crank on a screw projecting upward through the clamppresses the clamp down against the coil. INSULATION CABINET On the wall of the winding room is a cupboard builtespecially for insulating materials of various kinds. Thelower part holds ten standard length rolls of duck, linen,asbestos or other materials. Above are shelves for tape,cut mica, fibre and similar winding room materials. The. COMMUTATOR GROOVER lower portion of the front of the cabinet is hinged so thatit may be swung open and be used as a cutting table. COMMUTATOR SLOTTER The commutators of all railway armatures on the sys-tem are kept slotted. The work is accomplished by meansof a 13/2-in. diameter circular metal saw held in a specialdevice and driven by a small motor through a flexible saw is secured to the shaft of the holder in such amanner that when worn it may readily l)c removed and 73 replaced by a new one. About twenty-five minutes is re-quired to slot a Westinghouse 56 commutator j/g, in. small motor driven blower on the same circuit as thedriving motor is employed to blow the mica dust away fromthe operator. FIELD COIL TESTER A transformer field coil tester in use is also illustrated
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
