Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 180
nk rises above a certain level,the float is raised and opens the steam valve, which starts the pump.When the water is lowered to its normal level, the valve closes andthe pump stops. By this arrangement, a constant water-line ismaintained in the receiver, and the pump runs only as needed to carefor…
Architecture · Building · Carpentry
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![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-375-236.webp)
