. The Street railway journal . of the weight on the wheels on that emergency stops are made with a piston travel of 5^ins., reservoir pressure, 85 lbs., and train-line or brake-cylinder pressure, 40 lbs. per sq. in. These stops weremade without sliding wheels or using sand. A service stop made on the same date was made in 750ft. from a speed of 58 miles per hour. The piston travelin this case was ins.; reservoir pressure, 85 lbs., andtrain-line air-brake cylinder pressure, 20 lbs. per sq. in. Mr. Hamlin has given special attention to the brakeequipment of these cars, because of its g
. The Street railway journal . of the weight on the wheels on that emergency stops are made with a piston travel of 5^ins., reservoir pressure, 85 lbs., and train-line or brake-cylinder pressure, 40 lbs. per sq. in. These stops weremade without sliding wheels or using sand. A service stop made on the same date was made in 750ft. from a speed of 58 miles per hour. The piston travelin this case was ins.; reservoir pressure, 85 lbs., andtrain-line air-brake cylinder pressure, 20 lbs. per sq. in. Mr. Hamlin has given special attention to the brakeequipment of these cars, because of its great importancein high-speed interurban service of this kind, where stopsmust frequently be made in a short distance. In his opin-ion the secret of efficient air brake rigging, which uses aminimum of air, is to have no slack in the pins or holes inthe levers. If this is the case, the brakes are in effect fromthe instant the application of air is made, and it is possibleto keep the piston travel at a maximum of not more than 6. BRAKE RIGGING USED ON CARS ins., whereas, should the pins and pin holes become worn,the slack would be equal to probably 2 ins. more travel ofthe piston before the shoes become in contact with thewheels. Mr. Hamlin thinks that pins in levers and rodson air brake equipment of this size should not be smallerthan I in. in diameter. In the sketch it will be noticedthat there is a clip fastened to the car body, which holds thepull-rod running to each brake stationary, as far as thelateral movement is concerned, thus compelling the rolleron the end of the pull-rod to roll on the truck avoids setting the brakes on curves, on account of therollers sticking, and being carried with the quadrant whenthe truck is going around a curve. Mr. Hamlins instructions to men in his employ regard-ing braking apparatus are something on this order: Thatalmost anyone, even a child, can start a car, but it re-quires a cool and deliberate man at the engineers valve to
Size: 2226px × 1122px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookidstreetrailwa, bookyear1884
