History of composing machines; a complete record of the art of composing type by machinery ... also lists of patents on composing machines, American and British, chronologically arranged (1904)
Thompson, John S. (John Smith), 1872- · Chicago, Inland Printer Co · leaf 140
being character keys, providing for small caps and italics as well as body letter, and thirty keys for jus¬ tifying purposes, and one for restoring the parts after completion of the line. The keys are arranged in … MONOTYPE KEYBOARD. fifteen vertical rows with seventeen keys in each row. Each key is in fact a valve, which when struck allows compressed air to escape into the proper chamber in 122 1
Typesetting machines
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
