History of the Typewriter

—265— the index points to the desired letter, the corresponding letter is at the lowest point of the wheel. Pressure being applied, causes the supporting mechanism to sink, until the rubber faced type on the edge of the wheel meets the object to be printed upon. Inking is effected by means of a pair of small ink rollers which bear constantly on the surface of the type and keep the same well inked. The spacing between letters is performed automatically. Donnelley. This machine possessed some very remark- able and distinctive features. As will be seen by the illus- tration, it consists of a base supporting a travelling carriage, over which is a drum, the top of which represents the keyboard, the type lever being contained inside. There were twenty-six keys, working with two shifts, and the type levers ended in a small cog wheel, so that when a shift-key was depressed, the type-bars rotated to right or left as might be in order to effect the change of case. The machine was not, from all we can learn, made commercially, but it presented a very great possibility in typewriter construction which may, some day or other, be seized upon and very much elaborated. Dollar Typewriter. This machine appears to be identical with that at one time sold in England as the Simplex (q. v.) or in America as the Herrington (q. v.) Daw & Tate Typewriter. Ihese curious machines, which date from about 1885, are relics of the early days of English typewriters, and although they cannot for a moment be considered as practical instruments, are yet worthy of being rescued from oblivion. Two models of the machine were made. One was a