. The Street railway journal . nts on one wheelwhile failing specification on the other. For example, theshoes which are practically plain cast-iron shoes, Nos. 47,52 and 56, together with the shoes with expanded metal,Nos. 57 and 58, which have no large areas of insert, aresuitable for service on either wheel, whereas the hard insertshoes, Nos. 49 and 51, are satisfactory only on the steel-tired wheel. Here they can be used to advantage, especiallyif the inserts are so located as to contact with the tire be-ar The most satisfactory and universally adopted reinforce-ment is known as the steel
. The Street railway journal . nts on one wheelwhile failing specification on the other. For example, theshoes which are practically plain cast-iron shoes, Nos. 47,52 and 56, together with the shoes with expanded metal,Nos. 57 and 58, which have no large areas of insert, aresuitable for service on either wheel, whereas the hard insertshoes, Nos. 49 and 51, are satisfactory only on the steel-tired wheel. Here they can be used to advantage, especiallyif the inserts are so located as to contact with the tire be-ar The most satisfactory and universally adopted reinforce-ment is known as the steel back, which is formed of a plate3/16 in. thick mild steel, freely perforated for anchorage ofthe body metal. The Christie lug is reinforced by means ofa strip of similar metal surrounding the key way core, theends being tucked under the steel back, which is raisedslightly at the center of the shoe. The steel back andwrought lug are placed in the mold and the body cast aboutthem. The body metal, which may crack, cannot get away.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
