Carburetion in aviation engines
A 1923 technical report on carburetion in aviation engines, issued through the NASA Technical Reports Server from a historical aeronautics archive and written for engineers and engine designers. Its pictures are line diagrams with lettered points, straight and curved lines plotted against axes, and a figure of saturation curves; a designer could take from them the clean, schematic graphic language of early engineering charts, with labelled grids and angled construction lines.
