. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . s to the alignmentof the journal boxes in any required posi-tion without any liability of cocking ofthe spring seats by an arrangement oftrunnions, the trunnion blocks passingfreely through longitudinal openings inthe spring seats, and are provided withpivot ends which are carried in bearingsbolted to the under side of the floatingyoke. The trunnion blocks are coupled tothe spring seats by means of transversepins passing through the trunnions andspring seats, the whole forming a rightangled t


. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . s to the alignmentof the journal boxes in any required posi-tion without any liability of cocking ofthe spring seats by an arrangement oftrunnions, the trunnion blocks passingfreely through longitudinal openings inthe spring seats, and are provided withpivot ends which are carried in bearingsbolted to the under side of the floatingyoke. The trunnion blocks are coupled tothe spring seats by means of transversepins passing through the trunnions andspring seats, the whole forming a rightangled trunnion or what is generallyknown as a universal joint connection. It will thus be seen that with this con-struction the springs are retained in theirnormal relation to the main and truckframe in any movement of the journalboxes, either lateral or vertical, relativelyto the main frame; and a true bearing ofthe spring seats on the journal boxes isalways maintained. A bevelled frictionplate between the spring seats and thetop of the boxes is so designed as toassist the action of the spring centering. FLOATING SPRING SEAT YOKE AND SPRING SEAT TRUNNION. mentary trailing frames and the heavycast steel filling castings forming the at-tachment between them and the mainframes of the engine, which were used in mechanism in resisting the transverse ac-tion of the truck and is particularly effect-ive when the locomotive enters a tangentafter passing through a curve. 204 RAILWAY AND LOCOMOTIVE ENGINEERING. June, 1914. General Correspondence Effect of Wetting Coal. Editor : The writer was much interested in thearticle which appeared under the aboveheading on page 137 Railway and Loco-motive Engineering for April. There seems to be little question of thepractice of wetting coal having originatedwith the blacksmith at the time coal su-perseded charcoal for smithing purposes,but there is no evidence of the first black-smiths who used coal having done so tointensify the heat of their tires. Whe


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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901