. Locomotive engineering : a practical journal of railway motive power and rolling stock . al driving boxesin use to-day than there ever were box is more costly at first; but whenit is worn out, there is enough metal leftto balance the first cost and make its useno more expensive than that of cast iron. A solid box of alloy has some advan-tages over both steel and cast iron as adriving-box material. It runs with nomore side friction than cast iron, andthere is no fitting of the brass to be the expense of fitting, the driv-ing-box brass is a troublesome article,because i
. Locomotive engineering : a practical journal of railway motive power and rolling stock . al driving boxesin use to-day than there ever were box is more costly at first; but whenit is worn out, there is enough metal leftto balance the first cost and make its useno more expensive than that of cast iron. A solid box of alloy has some advan-tages over both steel and cast iron as adriving-box material. It runs with nomore side friction than cast iron, andthere is no fitting of the brass to be the expense of fitting, the driv-ing-box brass is a troublesome article,because it distorts the shape of the being pushed into place, and it evencauses cracks which eventually lead to abroken box. Those who have gone backon brass boxes have generally employedmetal that was not well adapted for thepurpose. Where metal especially adaptedfor driving boxes has been used, the re-sults have nearly always been satisfactory. A Tool for Centering; Nozzles. Every roundhouse mechanic and en-gineman knows the time and trouble itcosts to plumb a stack to get the nozzle. central. Only the mechanic realizes thebotches that are made in this plumbingbusiness because the engine did not sitlevel. The General Agency Co., of this city,are applying hundreds of Smith exhaustnozzles to locomotives all over the coun-try, and have seven or eight traveling en-gineers out doing this kind of work allthe time. It is important that these noz-zles—which have an opening nearly aslarge as the stack base—be located centralto the stack. To do this work quicklyand accurately, they have devised and putinto use the little tool shown herewith. The Smith exhaust pipe has a largeopening at top, and a central opening thatis smaller and lower down, inside themain pipe. Two light disks were madeto fit these openings; the lower one wasfastened permanently to the end of a steelshaft, and the larger one left free to slideon same. When these disks are fittedinto the exhaust pipe, the shaft wi
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroa, bookyear1892