. Electric railway journal . ut. Thesestops interact to form a stop motion device to prevent the drum from unwind-ing beyond the point of full release. They are solocated as to prevent the chain from unwinding beyonda point at right angles to a line extending throughthe center of the drum and pinion. This is the mostfavorable position for a quick recovery of the this arrangement the chain begins to wind on thelarge part of the eccentric, thereby giving the quickestpossible take-up to the slack and applying the fullbraking power to the shoes with a saving of a full turn ofthe brake han
. Electric railway journal . ut. Thesestops interact to form a stop motion device to prevent the drum from unwind-ing beyond the point of full release. They are solocated as to prevent the chain from unwinding beyonda point at right angles to a line extending throughthe center of the drum and pinion. This is the mostfavorable position for a quick recovery of the this arrangement the chain begins to wind on thelarge part of the eccentric, thereby giving the quickestpossible take-up to the slack and applying the fullbraking power to the shoes with a saving of a full turn ofthe brake handle. This improvement not only overcomesthe objection that some geared brakes require too muchwinding of the brake handle but also obviates the powerwaste which otherwise is caused by motormen who aretempted to run the car with the brakes partially set. Withthe new brake the motorman can let the brake fly off withthe assurance that it will not over-run on the release, andthat when he comes to make a new application the brake. Gear and Pinion of New Brake will take hold as soon as he begins to turn the handle. This brake is made with two styles of drums. Thebrake geared 17:47 is for single-truck cars up to 26,000lb. in weight and for double-truck cars up to 30,000 lb. inweight. This brake has the eccentric at the top of thedrum so that the chain winds from the top downward asthis is the tendency in single-truck cars and many typesof double-truck cars. All parts are made of malleable ironand supplied with either a 7/16-in. straight link chain ora jHs-in. twist link chain. Like all other Peacock brakesthis brake is equipped with roller bearings to minimizefriction. The chain tension to be obtained with the useof this brake varies from 713 lb. to 1498 lb. according tothe pressure applied (50 lb. to 75 lb.) and the length ofthe handle (10 in. to 14 in.). The brake geared 15:49 is for double-truck cars between30,000 lb. and 35,000 lb. in weight and single-truck carsweighing more than
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
