This Hammond Folding Multiplex typewriter was manufactured by the Hammond Typewriter Company of New York beginning in 1923. The typewriter uses Hammond’s patented type-shuttle and hammer typing mechanism where the printing is done by a hammer in the back of the machine striking a type-carrying shuttle in the front of the machine, with the paper and ink ribbon in between to receive the impression. This Hammond Folding Multiplex contains two additional Hammond innovations. It is called a Multiplex because the typewriter contains two type shuttles that can easily be rotated into use, allowing the typing of two complete alphabets in different typesets on each machine. This typewriter’s keyboard could also fold up to allow a cover to be attached to the base, allowing the typewriter to be carried. The keyboard is in a three row QWERTY array.
