Railway and Locomotive Engineering . 7/feji; Jfoiriji V/Jf* i \ -. - 7h:s Urn £ Slock „. Th,i Ron t, Slock Hon A 8olt head Taut iSlact Double Circle indicates - COf&^ Bolt f/exil>le Balls ? S diyiackTaut age of the back lieads and throat sheetsalong the outer row of staybolts; also thevertical cracks in the side sheets, as wellas the cracks from the water-bar holes,as indicated in Figs. 2, 3, 4 and S. Thistheory is borne out by the movementof the needle shown extending throughthe throat sheet, Fig. 1, as, when the firewas first started, and before circulationwas fully established, the needl
Railway and Locomotive Engineering . 7/feji; Jfoiriji V/Jf* i \ -. - 7h:s Urn £ Slock „. Th,i Ron t, Slock Hon A 8olt head Taut iSlact Double Circle indicates - COf&^ Bolt f/exil>le Balls ? S diyiackTaut age of the back lieads and throat sheetsalong the outer row of staybolts; also thevertical cracks in the side sheets, as wellas the cracks from the water-bar holes,as indicated in Figs. 2, 3, 4 and S. Thistheory is borne out by the movementof the needle shown extending throughthe throat sheet, Fig. 1, as, when the firewas first started, and before circulationwas fully established, the needle movedout 3/32 inch, and later, when circulationwas established and the steam pressurebegan to rise, the needle moved backwardabout 1/16 inch. The lirst movement of. the needle, we think, throws some lighton the cause of side sheets puffing alongthe fire line, as they sometimes do. Fig. 6 .shows, to the left, an installa-tion of flexible staybolts, which, whenadjusted, as shown by the tables and notes, in our opinion, will relieve the stressesthat are the cause of the failures in-dicated in Figs. 2 and 3: and, to theright, the same installation and methodof adjustment of flexible staybolts in thehrst and second ruws on the side at eachend to relieve the stresses tliat we believeare responsible for the failures sliown inFigs. 4 and 5. Our experience on the New York Cen-tral and Michigan Central has been of themost satisfactory nature in preventingcracked sheets and leaky side-sheetseams, and we are of the opinion that aninstallation of flexible staybolts, set loose,as shown in Fig. No. 6, with this differ-ence, we believe a full installation in thethroat sheet, set loose as follows, is ad-visable : First row above mud row above m
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyork, bookyear19
