. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . schedule of instructions, andamong other details we embodied the ex-periment that the vertical front and backrows from tiie mud ring were to be set and, furthermore, that the elimination ofthe excessive staybolt breakage will re-sult in a remedy for the leaky side-sheetyearns. It may be stated thai when tliese loco-motives originally came into service theyall liad rigid staybolts. and it was quite acommon experience to find anywhere fromthree to five or more bolts broken inihesf three rows. W
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . schedule of instructions, andamong other details we embodied the ex-periment that the vertical front and backrows from tiie mud ring were to be set and, furthermore, that the elimination ofthe excessive staybolt breakage will re-sult in a remedy for the leaky side-sheetyearns. It may be stated thai when tliese loco-motives originally came into service theyall liad rigid staybolts. and it was quite acommon experience to find anywhere fromthree to five or more bolts broken inihesf three rows. We made an investiga-tion, as shown in Fig. 11, the procedurelieing as follows: We happened to have one of this typeof engine in the shop for general re-pairs, at which time Mr. Linderman, atthat time supervisor of boilers, at West,\lhany. personally had charge of the op-erations. He began by constructing aheavy templet, as shown in Fig. 11,reaching from the center at the top of theouter boiler sheet down to a point at theside as shown, and clamped it at thecenter to the boiler. This was done when. FIG. 11. 1/16-in. loose, and tlie same allowancewas also made in the case of the outerrow around the back head. Figure 9 shows three rows of bohs,as indicated by X, immediately abovethe last row of short or horizontal bolts,in several wide firebox boilers where abreakage of bolts had occurred too fre-tjuently. We made a careful investigationof this feature with the result that anumber of experiments were made to de-termine the cause thereof. These werecarried out carefully, and the results ofwhich were very satisfactory, and willbe dealt with more fully as we proceedin the further progress of our oliserva-tions. Briefly, the result of these exijcrimentswas that it is our belief that the sameagency that is responsible for breakage of staybolts, as shown inFig. 9, is responsible also for the leakyside-sheet seams, as shown in Fig. 1(1, the lioiler was cold. The job was
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