Modern locomotive engineering, with questions and answers .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co · leaf 641
he pressuredown below the tension of thegraduating spring, the dia-phragm will be forced downand again unseat the checkvalve to admit main air pres-sure. This action enables theengineer to place the straightair brake valve in service posi-tion, and do any repair workunder his engine with… … R.V-107 ^^ ^ PIPE THREAD Figure 265 New York Safety ^alve With Hand Release the greatest benefits that the straight air brake valve confers in road service is, that itenables the engineer to set the engine brakes inde-pendently of the train brakes, so that in slowingdown, or in making a stop, he…
Locomotives
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