. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ther end of the valve chamberwhich admit live steam to the ports are each % in. by l^^ ins. andare open at all times, except when cov-ered by the valves. The steam lap ofthese ports is 4 in, August, 1917. RAILWAY AND LOCOMOTIVE ENGINEERING 247 In the connections between engine andtender the old style double safety barswith slotted holes have been replaced witha unit safety bar, which is of the samecross section as the draw bar and Yz , the safety bar being connected t
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ther end of the valve chamberwhich admit live steam to the ports are each % in. by l^^ ins. andare open at all times, except when cov-ered by the valves. The steam lap ofthese ports is 4 in, August, 1917. RAILWAY AND LOCOMOTIVE ENGINEERING 247 In the connections between engine andtender the old style double safety barswith slotted holes have been replaced witha unit safety bar, which is of the samecross section as the draw bar and Yz , the safety bar being connected tothe engine and the tender by the drawbar pins. This device for which theP. R. R. hold the shop rights, is handledby the Economy Devices Company of 30 an arrangement of these parts has beenbrought out by the Economy DevicesCorporation. Check claims have been found moreor less unsatisfactory, owing to thelarge amount of slack which is incidentto their use. In fact, a check chain sel-dom becomes of use in service until theslack has been pulled out of it, endingin a severe jerk. This sudden jerk fre-. SHACKLE BAR BETWEEN ENGINE ANFROM Church Street, New York. This appara-tus may be described by saying, first that The Interstate Commerce Commissionhas a standing order concerning thecoupling of engine and tender whichwithout specifying any sizes requires ashackle bar and check chains or theirequivalent, and these coupling appliancesmust be sufficiently strong. This meansthat they must not fail. If they do failthe inference is obvious—they were notstrong enough and therefore they did notcomply with the law. This might seem atfirst sight to be a law built on the prin-ciple of Heads, I win—tails, you , however, is not the intention. The Interstate Commerce Commissionhas stated what is requisite in the inter-ests of safety, and has left the detailsto be worked out by the experts em-ployed by the railways to do that present there is no hard and fastrule between what
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
