Modern locomotive engineering, with questions and answers .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co · leaf 578
used to work automatic by placingit horizontal, and to cut it out place it at an angle offorty-five degrees; to make it work straight airplace the handle perpendicular, for then plug 13 isturned so that the end of the passage which is shown AUTOMATIC AIR BRAKES 5^.1 to be in register with port d,… … Figure 236Plain Triple Old Style Valve in other words, the triple valve proper and auxiliaryreservoir would not be used when the handle wasturned on for straight air. This is so seldom donenowadays that there is a lug cast in the handles of allsuch plain triples to prevent cutting them in straight…
Locomotives
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