Hydraulic, electric, steam and belt elevators.
This 1893 trade catalogue from Otis Brothers & Co., published by Otis Brothers, presents hydraulic, electric, steam and belt elevators for building owners and engineers. Its engraved plates show machinery in detail: geared hoisting drums, steam engines, a freight car with a worker at the controls, and brass control gear. A designer could draw on the precise mechanical line work, the dense cross-hatching, and the restrained lilac-tinted plates.
