File:Railway mechanical engineer (1916) (14780820393).jpg

Identifier: railwaymechanica92newy (find matches)
Title: Railway mechanical engineer
Year: 1916 (1910s)
Authors:
Subjects: Railroad engineering Engineering Railroads Railroad cars
Publisher: New York, N.Y. : Simmons-Boardman Pub. Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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those for the Midi develop36,200 lb. While the boiler capacity is low in relation tothe cylinder capacity, it compares verj favorably with re-cently built locomotives of the same type for use on Americanrailroads. The dimensions of both boilers are identical. The de- jacket is supported on a crinoline frame leaving an air spacewhich acts as a non-conductor. The firebox is fitted with an inside opening firedoor tomeet the requirements of a French law. The door is hingedat the top and is opened by means of a lever extending up-ward at one side of the door frame. This lever is fitted witha latch, which operates in a quadrant provided with notchespermitting the door to be fastened in wide open, partiallyopen and closed positions. The door opens inward and up-ward, and when closed hangs at an angle of about 25 deg.from the vertical. Among the points of general interest in the design, itwill be noted that the locomotives for both railroads are 136 March. 1918 RAILWAY MECHANICAL ENGINEER 137
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13S KAILWAV MECHANICAL ENGINEER Vol. 92, Xo. 3 controlled from the left side, contrary to American practice.The steam is distributed by 1034-in. piston valves, whicharc controlled by the Walschaert valve gear. The cylin-ders are fitted with by-pass valves operated by air cylinders,and with muffled cylinder cocks. .-Ml the engines have a variable exhaust operated fromthe cab by a screw which passes through one of the hand-rails, and -the front ends are fitted with spark arresters. While tlie running gear in general is designed along thelines commonly followed in this country, the cross-balancingof the driving wheels is contrary to American practice fortwo-cvlindcr locomotives. The effect of this practice onthe angularity of the counterl)a)anres is clearly indicatedin the illustration of the French State Railway locomotive. A pneumatic sander is combined with a screw conveyorwhich extends through the sandliox and is operated fromtlie cab. Roy buffers are applied between tlie engine and

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