A textbook on the locomotive and the air brake (1901)
International Correspondence Schools · Scranton, Pa., International textbook co · leaf 418
where the grades areheavy. It is not intended to replace the ordinary air pump,but rather to act as an auxiliary compressing device to help outthe pump. In case the pump becomes disabled, however, itmay be made supply the entire amount of air necessary to bringthe train safely down the grade.…
Locomotives · Locomotive boilers · Railroad cars
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
