International Library of Technology · Scranton, International Textbook Co. · leaf 254
welding is now fre-quently resorted to for bonding the rails. It makes a strongjoint mechanically,and if the work isproperly done, the re-sistance of the jointmay be as low, if notlower, than that of acorresponding lengthof rail. The ends ofthe rails are first care-fully cleaned by means of a sand… … Fig. 39. 36 ELECTRIC RAILWAYS. § 22 and is of high electrical conductivity. The cast iron / isapproximately 100 pounds in weight and covers the railsfor a length of 10 or 12 inches. 37. Electrically Welded Joints.—In this method ofjoining the rails, the abutting ends are first cleaned andthen held…
Electrical engineering
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