. Electric railways, theoretically and practically treated . IpJii .^ 11 li [d u n u Ui ^ i^ y^/////////////////////////////////////////^^ Fig 147.— BRAKE CYLINDER. the wheel being imparted to the friction disc, the brakechain is wound upon the sleeve to which it is attached andthe brake levers operated by the chain. The amount ofbraking pressure developed depends of course upon thepressure between the friction disc and wheel, and this isregulated by the amount of pull exerted by the motormanon the brake handle. The rapid action of this brake, as well as the possibilityof readily increasing th
. Electric railways, theoretically and practically treated . IpJii .^ 11 li [d u n u Ui ^ i^ y^/////////////////////////////////////////^^ Fig 147.— BRAKE CYLINDER. the wheel being imparted to the friction disc, the brakechain is wound upon the sleeve to which it is attached andthe brake levers operated by the chain. The amount ofbraking pressure developed depends of course upon thepressure between the friction disc and wheel, and this isregulated by the amount of pull exerted by the motormanon the brake handle. The rapid action of this brake, as well as the possibilityof readily increasing the braking pressure with the load orspeed, makes it a highly effective brake. In brakes of the type above described the frictionmechanism actuates the wheel shoes; a variation of thisarrangement which has been used to a very limited extent BRAKES AND BRAKING. 243 consists in the addition to the system of rail shoes such aswere described above in connection with the track brake. Air Brakes. —The air brake is in universal use in steamrailroad practice and
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkvannostrand
