. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . been made of the specialattention given to the design of the recip-rocating parts and machinery. Thepistons have a dished section, and are of40 per cent carbon cast steel, carefully an-nealed. They have iron bull rings cast onthem. Xo extension rods are used, butthe bull rings are widened, at the bottom,from 4 .. to 6 inches. The piston rods are the static weight for the front and backdriving-wheels, and 28 per cent for themain wheels. The proportion of the re-ciprocating weight that has been
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . been made of the specialattention given to the design of the recip-rocating parts and machinery. Thepistons have a dished section, and are of40 per cent carbon cast steel, carefully an-nealed. They have iron bull rings cast onthem. Xo extension rods are used, butthe bull rings are widened, at the bottom,from 4 .. to 6 inches. The piston rods are the static weight for the front and backdriving-wheels, and 28 per cent for themain wheels. The proportion of the re-ciprocating weight that has been balancedis 61 per cent, and this is equivalent, oneach side, to 1/202 of the total weight ofthe engine. The following actual weightsare of interest in this connection: Piston and rod complete, with cross-head key. 557 lbs. Cross-head, 414 lbs. Main rod, 870 lbs. Side rod weight on front crank lbs. Side rod weight on main crank lbs. Side rod weight on back crank pin,168 lbs. Crank pins complete, front, 125 lbs. Crank pins complete, main, 295 lbs. Crank pins complete, back, 130 PACIFIC TYPE LOCOMOTIVE FOR THE CHICAGO, BURLINGTON & QUINCY A. Torrey, Supt. of Motive Power. Baldwin Locomotive Works. Buildc pounds on driving-wheels, with a limit of60,000 pounds on any one pair. Specialattention has been given to the design ofthe reciprocating parts and other ma-chinery details, with a view to reducing,as far as possible, the dynamic augmenton the rail when running at high locomotive throughout is an excellentexample of a high-powered passengerengine, designed to develop maximumpower in proportion to its weight, but in-corporating no complicated or untriedfeatures. The boiler is of the extended wagon-top type with a combustion chamber. Thebarrel is composed of three courses, thefirst course being sloped on top and thethird course on tin- bottom. This con-struction provides ample steam space, andalso a free cntrv to the throat under thecomb
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