Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 442
while the pit-work is being put in place in the pumping compartment of the shaft, or while repairsto the same are being conducted. To accomplish this without decreasing materially the out-put ofore, the water-bucket is sometimes attached to the bottom of a safety-cage, as shown in Fig. 3073,which…
Mechanical engineering -- Dictionaries
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