. Electric railway journal . ately operate the portion of the line southof Sherman at 1200 volts direct current and abandonthe substations at Piano and Van Alstyne. With the 25-cycle system, the substation farthestfrom the power house was served by a 35-mile trans-mission line, while under the present arrangement withpurchased 60-cycle power, the most distant substationis 95 miles from the generating station. This, inci-dentally, is the longest transmission line in the countryserving 60-cycle converters. The writer is also incharge of six substations for the Southern TractionCompany, which ope
. Electric railway journal . ately operate the portion of the line southof Sherman at 1200 volts direct current and abandonthe substations at Piano and Van Alstyne. With the 25-cycle system, the substation farthestfrom the power house was served by a 35-mile trans-mission line, while under the present arrangement withpurchased 60-cycle power, the most distant substationis 95 miles from the generating station. This, inci-dentally, is the longest transmission line in the countryserving 60-cycle converters. The writer is also incharge of six substations for the Southern TractionCompany, which operates south of Dallas at 1200 voltsdirect current supplied from motor-generator sets, andfinds that the 60-cycle converters are just as dependableand have the increased efficiency in their favor. Protecting Cables in Manholes The Composite Metal Lath Company, New York City,has just developed a method of wrapping the cablewith a mesh of steel wire upon which ordinary brick orterra cotta has been baked. The accompanying illus-. FEEDER CABLE PROTECTED BY METAL LATH COVERING tration shows a 21,|>-in. feeder on which the brick lathis used as a base for a protecting coat of sand andcement. This covering is made up in large sheets 40 in. wideby 16 ft. long. It is usually cut in strips about 3 and wound spirally about the cable to be pro-tected. A mixture of two parts sand to one part Port-land cement is then wiped on by hand to a thickness ofabout % in. This covering can easily be applied inmanholes or other confined places. It is claimed thatthis material is less expensive than an asbestos or ropebase. Other methods of fireproofing cables in man-holes were described by Albert F. Hovey in the Elec-tric Railway JOURNAL for Nov. 18, 1916, page 1068. 312 ELECTRIC RAILWAY JOURNAL LVol. XLIX, No. 7 Open Car Equipped for Winter Serviceas Shopmens Express Heaters Under Seats and Side Curtains with FlexibleWindows Make Fourteen-Bench Car a PopularSmoker on Bay State Street Railway
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