Type;a primer of information about the mechanical features of printing types: their sizes, font schemes, &c., with a brief description of their manufacture, (1914)
Stewart, A. A. (Alexander A.) · [Boston] Pub. by the Committee on apprentices, United typothetae and Franklin clubs of America · leaf 31
that three lines of matrices may be kept in operation at once — one being assembled, one at the casting mold, and the third being distributed. The work of the operator is to manipulate the keyboard and, at the end of each line, move a lever which engages the mechanism that carries the assembled… … stationary mold for the size of type to be Monotype Keyboard cast, and a matrix-plate. The matrix-plate is about five inches square, and has on its face depressed images or matrices of each letter and character of the font. The perforated strip of paper, when fed to its place, controls the movement…
Type and type-founding -- United States -- Specimens
Internet Archive · The Library of Congress · Public domain (published before 1931). Free to use for anything.
