File:The Street railway journal (1898) (14761688185).jpg

Identifier: streetrailwayjo141898newy (find matches)
Title: The Street railway journal
Year: 1884 (1880s)
Authors:
Subjects: Street-railroads Electric railroads Transportation
Publisher: New York : McGraw Pub. Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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ending over a consid- portant in its place as the power that moves the brake at theother end. The brake shoe is the medium through which thepower, the air from the main reservoir or muscular exertion atthe end of the brake handle, reaches the wheel and controls thespeed of the train, and as the brake shoe is good or bad, so thecontrol of the car is complete or incomplete. A brake shoe to be theoretically good should retain the benefi-cial features of the plain cast-iron shoe and at the same time-should possess the durability and toughness of steel. One of therecent types of brake shoes for which these advantages are claimedis the Diamond S. This shoe consists of a body of cast iron, ofunchilled but dense and strong metal, cast about a bundle com-posed of strips of expanded sheet steel. Each strand of the in-sertion is completely surrounded by cast iron, the whole forminga homogeneous and symmetrical mass. The iron is intimatelybound up by the steel strands, which extend throughout the
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FIG. 4.—BROOKLYN ELEVATED RAILWAY TRAIN EQUIPPED WITH AIR BRAKES erable time. The two latter illustrations are intended particularlyto show the variety of service for which this apparatus is appli-cable, covering the heaviest, as well as the lightest. S Brake Shoes The proper shape and material for making brake shoes forstreet railway cars has been a subject of discussion among engin-eers for some time, but particularly since the advent of the electricmotor. When horses were used the problem was not of suchvital importance, but with the heavier electric cars, greatly in-creased traffic and higher speeds, the question of stopping a carbecomes almost as important as the question of the best methodof running it. As the manufacturer of a well-known type ofbrake shoe has recently put it: In those days the main use of thebrake was to keep the car from running over the motive power(mule), and an emergency stop was accomplished by turning themotive power sideways and running into it. The su

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