. The street railway review . in Fig. 9. The trolley wire is of grooved section of No. 000 drawn by the Roeblihg company. feeder wires of the Chicag of aluminum cable, furnished by the Pittsburg Reduction Co., with the exiof a short piece of c. m. copper cable on the JolieThe following table shows quantity of the feeders: Miles. No■trends Insula*lion. Copperequivalent mil*. Voll a«e Use. n «o20 19 77 :-- TBWP re P 168,000«.7«26,2/0 400,000 *115,00015,000 600600 Economy Sta. to Jollel Sob- Lemont Lemont Snb-ata. to Sammll Sob nf town in city and vil
. The street railway review . in Fig. 9. The trolley wire is of grooved section of No. 000 drawn by the Roeblihg company. feeder wires of the Chicag of aluminum cable, furnished by the Pittsburg Reduction Co., with the exiof a short piece of c. m. copper cable on the JolieThe following table shows quantity of the feeders: Miles. No■trends Insula*lion. Copperequivalent mil*. Voll a«e Use. n «o20 19 77 :-- TBWP re P 168,000«.7«26,2/0 400,000 *115,00015,000 600600 Economy Sta. to Jollel Sob- Lemont Lemont Snb-ata. to Sammll Sob nf town in city and villages. Joints in aluminum cable have been made altogether by splicingsomewhat after the fashion of a span wire wrap, giving each strandin each piece several wraps about the other piece and cutting itoff after hooking it under the succeeding strand. In this mannera tapered joint is obtained, (about 3 ft. in length in the case ofthe larger cables) having more strength than the original cable e 1 ££ —-— tc ~ * ft f^l. FIG. 10-POLE LAYOUT. and with conductivity about one quarter greater. No solder what-ever was used in connection with this metal. For the high tension lines 5-in. triple petticoat porcelain in-sulators of Imperial manufacture, have been used. In the hope of rendering then targets they are glazed in lor. The cables are fastened with aluminum tic wire the instil ii if malleable by the Albert &• J. M. Anderson to keep the saddles and th and from any pi which might abrade the hare wires. The tilty experienced with the aluminum wires has had its source in the comparatively large co-efficient of expansionof that metal. Men accustomed only to copper feeders, will stringaluminum too loose in wint light in summer. The latter is perhaps the more serious error and particularly where the num-
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
