. Electric railway journal . n break due to the twisting motion causedby the truck while rounding curves or passing overpoor track joints. The result is either a poor groundconnection or an open circuit which invariably showsup in motor trouble, fires and delays to service. A ground lead developed by one of the larger prop-erties to do away with these troubles, and the methodof attaching it to the motor shell by a tap bolt, areshown* in the accompanying illustrations. No separateterminal is used but the end of the ground lead isformed into a loop of proper size to fit over the tapbolt. The lea
. Electric railway journal . n break due to the twisting motion causedby the truck while rounding curves or passing overpoor track joints. The result is either a poor groundconnection or an open circuit which invariably showsup in motor trouble, fires and delays to service. A ground lead developed by one of the larger prop-erties to do away with these troubles, and the methodof attaching it to the motor shell by a tap bolt, areshown* in the accompanying illustrations. No separateterminal is used but the end of the ground lead isformed into a loop of proper size to fit over the tapbolt. The leads, of proper length for each type ofmotor, are made up in the electrical department. Afterthe loop is shaped it is carefully wound with copperwire and then thoroughly tinned, thus making a thor-oughly solid terminal. Attention is particularly called to the short sectionof insulation left on the end of the lead which issolidly clamped to the lead proper by means of a figure-8metal clamp. This arrangement places the strain or. Cable Insulation removed Cotter Key. Lockout Nut. ,fs/ot,fdeep Flat Washer T~ T j \M Notthreaded Ground Wire Loot No. 16 Gage GalvanizedSheet Iron FIG. I
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
