Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 993
Fig. 395 Hydraulic Elevators 959 run out T^ith such freedom Ihat if the car should happento be at^ or near the top of the hatchway it would attain adangerous speed by the time it reached the bottom. Butby locating the pressure tank on the roof of the buildingthe danger from this source is obviated,…
