. The street railway review . ure .a 37 tons 1- developed al the weld. The carbehind the welder contains a rotarj converter and suitable regu lating apparatus fur transforming the current taken from the trolley win to .111 alternating currenl of 300 volts. Ibis apparatus hasrecently been installed and doi away with a rotarj converter and a I ster in two separate car-, which was previouslj used. By mean of this apparatus the primary currenl to the welding transformer i- kept practically constant at .too volts with a line voltage i 125 i 600, Wnii a line voltage of 250 amperes are take
. The street railway review . ure .a 37 tons 1- developed al the weld. The carbehind the welder contains a rotarj converter and suitable regu lating apparatus fur transforming the current taken from the trolley win to .111 alternating currenl of 300 volts. Ibis apparatus hasrecently been installed and doi away with a rotarj converter and a I ster in two separate car-, which was previouslj used. By mean of this apparatus the primary currenl to the welding transformer i- kept practically constant at .too volts with a line voltage i 125 i 600, Wnii a line voltage of 250 amperes are taken anil it requires about [25 kw. to make a weld; as theCurrenl 1- on about two minutes at each weld the power consumed1- [2 i kw. b. per joint. A- a continuous process ii takesfrom twelve to fifteen minutes to complete a joint. hollowing the welding (rain come- a surface grinder, by meansof which the brad of (lie 1 nil i- reduced to a Hue surface. Thistool i- needed mi new rail. In welding old rail the receiving. I . i RH w i rI !. d a bill, higlll i lb. -,lh. 1 n.| ill. i i ilitii I. at me Hi. b. ..I ..i lb. rail a trui igaiti m I ... a .1. 11 . .1 . pccially 1 .mi 11. 1. from ihe ii ihod ii - mployi d No Hi ible ha I ami mpo Ii ■ 11 1 1 drop di•■■ n Into thi Ii 1 11 STREET R \ REVIEW. [Voi Ml. No. n. in the: return the current i make m the tin- i ill I In- i- don.
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
