Fakir fuel pump
A 1922 technical report from the NASA Technical Reports Server, a record of engineering drawings for a fuel pump described as the Fakir. It is aimed at engineers and mechanics. The single picture is a pair of cross-section drawings with numbered parts and lettered callouts, showing diaphragm, intake and outlet valves, and a connection to the engine cylinder. A designer might take from it the clean, labelled line-drawing style of early mechanical diagrams.
