. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . unable to counteract the expansion andcontraction with the solid stay bolt,discussion centered on flexible stay bolts. it, for iron has capacity to convey tothe water the heat it obtains from theiire, however fierce; but if burning iscommenced at the inner end of thestay bolt, it will extend outward and im-peril the sheet immediately around riveted close to the plate theinner end of the bolt is only mechan-ically in touch with the plate, and can-not exercise the functions of the she
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . unable to counteract the expansion andcontraction with the solid stay bolt,discussion centered on flexible stay bolts. it, for iron has capacity to convey tothe water the heat it obtains from theiire, however fierce; but if burning iscommenced at the inner end of thestay bolt, it will extend outward and im-peril the sheet immediately around riveted close to the plate theinner end of the bolt is only mechan-ically in touch with the plate, and can-not exercise the functions of the sheetin giving to the water the heat by whichit is attacked. The water protects thesheet from burning and the heat passesthrough the iron to the water. Theburning of the inner end of the staybolts being demonstrated by the burntends on the board, it is reasonable tosuppose that the flexible stay bolt,which offers more substance to burn,and is, neither in the furnace nor at itsjoints, chemically in touch to exercisethe functions of iron to obtain the pro-tection from, and convey the heat to,the SOME OF OUR FRIENDS AT WELLINGTON, N. Z. to the bolt, in which the impact of themolecules from the heat and com-pression, is cushioned in the air passingthrough the center of the bolt, expand-ing perhaps three fold between the out-er and inner air, from the heat by ittaken up in its passage through the cen-ter of the bolt, giving a natural elas-ticity to the bolt. And, given two locomotives stayedwith good quality and equal sized staybolts, the locomotives put into servicein the same locality under the sameconditions and equally well cared for,the locomotive with the stay bolt hav-ing the hole through its center willendure in service twenty per cent, long-er, steam better and burn less fuel. Within the present week I have seensamples of new stay bolts made likestrands of a rope of iron and steel,rolled seemingly homogenous, but whenthreaded and bent, though showinggood fiber, the str
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