. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ears, and is still well andhearty, thank you. In the older parts ofPhiladelphia, loo ft. and 3 ins. are to-day legally 100 ft., because the survey-ors chain with which the city was laidout was 3 ins. too long. Special tapelines are made for use in Philadelphiaon which 100 ft. 3 ins. are graduated as100 ft. The Vi in. United States or Sellersstandard screw thread has 13 turns perinch. Mr. Welsh, the original superinten-dent of the Westinghouse Air BrakeWorks, for some reason now unknown,object
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ears, and is still well andhearty, thank you. In the older parts ofPhiladelphia, loo ft. and 3 ins. are to-day legally 100 ft., because the survey-ors chain with which the city was laidout was 3 ins. too long. Special tapelines are made for use in Philadelphiaon which 100 ft. 3 ins. are graduated as100 ft. The Vi in. United States or Sellersstandard screw thread has 13 turns perinch. Mr. Welsh, the original superinten-dent of the Westinghouse Air BrakeWorks, for some reason now unknown,objected to an odd numbered thread, andhe, therefore, adopted the Sellers stand-ard, except that for the half-inch bolt,he adopted 12 threads instead of 13. Thisdecision has proven to be a mistake and anuisance, and the company would to-daybe very glad to change it, but it findsitself powerless to do so. The immensenumber of brake equipments which areout all over the world, the constant callfor renewals, repairs and extensionsmakes the simple necessity for continuityparamount above all others. I know of. OLDEST LOCOMOTIVE IN THE WORLI I>\ UNDER STEAM. of our shoes is a barleycorn. The Stateof Texas has been United States soilsince 1846, but in those portions of theState which were settled by the Span-iards—how it is in the other portions, Ido not know, nor does it matter—but intlie portions settled by the Spaniards the no more significant example than great company finds itself power-less to change the number of threadsupon one size of bolt by one turn perinch, but our metric friends tell us thatwe can change everything and almostwithout difficulty. Mfi RAILWAY AND LOCOMOTIVE ENGIXEERING April, 1906. Hardworked Yard a discussion on Loading ofLocomotives on the Equated Tonnageor Drawbar Pull Basis, at the New YorkRailroad Club, introduced by Mr. J. , of the Illinois Central, Mr. Dalymade the following pertinent remarksabout a poorly appreciated
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
