New York [etc.] Simmons-Boardman Pub. Co. [etc.] · leaf 435
commingler with one and three-quarterspounds of steam, and in connection with the Pennsyl-vania Railroad return system the improved comming-ler has worked in vacuum *ith only a difference oftwo pounds between the supply and return pipe. The heating apparatus is controlled by only onevalve. No… … seen from Fig. 2, is within the car where it can bereached while the train is in motion. With the improved commingler ■ systemQ theoverflow pipe is connected to the air spacewithin the expansion drum and thus permitsthe compressed air to escape as the water ofthe circulating system expands. No air…
Railroads · Railroad cars
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