Illustrated catalogue and general description of improved machine tools for working metal (1899)
Sellers, William, & co. [from old catalog] · Philadephia, Levytype company · leaf 338
Wm. Sellers & Co., Incorporated, Philadelphia, Pa. 333 Plate No. 265. … A Line Shaft in the Station of the Northern Electric Light andPower Co. of Philadelphia. The dynamos on the floor above are driven from thi.s shaft bj^ nearlj- ver-tical belts, to which tension is given by means of belt-tighteners that are raisedand lowered by chain-blocks. 334 Wm. Sellers &…
Machine-tools · Machinery
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