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 63
is further increased by duplication of channels most used. The type is released by positive actions, the touch of the keys merely serving to set in motion certain releasing mechanisms. An average of twelve thousand ems per hour is possible on the keyboard. The types are ejected into a raceway.… … DOW COMPOSING AND JUSTIFYING MACHINE. 45
Typesetting machines
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
