New York [etc.] Simmons-Boardman Pub. Co. [etc.] · leaf 296
having a widerange of application and as indispensable accessoriesto all thoroughly equipped steam jilants.THE PUMP CiO\-EKXOK. The Bosworth pump governor (Fig. 1. section: Fig,2, elevation), is actuated by two positive forces: one,compressed air, the other, a spiral steel spring: Ixjthare certain… … act in opposition—the spring to open the throttlevalve and the air to close it—it is obvious that thespring can be effective only, when the air iiressure inthe cylinder is less than its own; and that the air canbe effective only, when its own pressure exceeds thatof the spring: and it will; be seen…
Railroads · Railroad cars
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