British Patent No. 6523 of 1908, Improvements in Type and Other Metal Cating Machines
A 1908 British patent specification by Edward Charles Robert Marks, assigned to the Thompson Type Machine Company, covering improvements to type and sorts casting machines for the typefounding trade. The two plates are mechanical drawings: a plan and elevation of a machine with numbered parts, cams, and gears, plus a front elevation with a motor-like drive and a foot base. A designer might take the dense line-numbered technical diagram style and the clean hatched cross-sections as a model for precise mechanical illustration.
