Locomotive engineering - a practical journal of railway motive power and rolling stock (1896) (14574988959)

Identifier: locomotiveengine09hill (find matches)

Title: Locomotive engineering : a practical journal of railway motive power and rolling stock

Year: 1892 (1890s)

Authors: Hill, John A. (John Alexander), 1858-1916 Sinclair, Angus, 1841-1919

Subjects: Railroads Locomotives

Publisher: New York : A. Sinclair, J.A. Hill (etc.)

Contributing Library: Carnegie Library of Pittsburgh

Digitizing Sponsor: Lyrasis Members and Sloan Foundation

Text Appearing Before Image:

e illustra-tion. The Roxbury Shops. The shops of the N. Y., N. H. & H. atthe above point bear evidence of old-time G ft mi I tut Atuirhinrnt to the dignity of a full-fledged air com-pressor, and has to get its pressure from8-inch pumps, whose air cylinders arebushed to 6 inches diameter, giving aconstant working pressure of lOo pounds,which is stored in a reservoir made of anold locomotive boiler. There is a belief among some engineersthat an ordinary locomotive will not attaina speed of loo miles an hour because thesteam will not escape fast enough to re-lieve the piston of back pressure. TheChicago & Northwestern people had agood demonstration that the back pres-sure as a speed-restraining brake is a fal-lacy. They were making some experi-ments on the testing plant illustrated inour March number, when the governorbelt accidentally slipped ofif. The engineat once started to race. The Boyer speedrecord is graduated up to loo miles anhour, and the pointer went as far as it 1C9-

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days, and the tools are largely of an anti-quated type; but Master Mechanic Twom-bly is not influenced by his surroundingsto the extent that he neglects any open-ings for improving and cheapening thecost of his output. He is a believer incompressed air for handling work aboutthe shops, as is amply evident by thehome-made overhead trolley with a smallair-lift running lengthwise of the machineshop, another crosswise of the same shop,and still another running from the axlepile to the machine shop, and also onefrom the wheel platform to the machineshop and roundhouse. These lifts are 8-inch, and, in addition to these, there are14-inch lifts at each pit, and a small onelocated over the potash vat, to lower andraise the cage containing the work in pro-cess of cleaning. This system of trolleys has worked arevolution in handling work here, mak-ing it unnecessary to truck anythingabout the shop, and it is immensely popu-lar with the men. There are other shopsthat have utilized air in a greater

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1896

Carnegie Library of Pittsburgh

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public domain