Hammond typewriter circa 1905

Hammond circa 1905 typewriter with original wooden box. J.b. Hammond and e.j. Manning manufactured by garvin machine co and hammond typewriter co. New york city 1881. First semi-visible typewriter with interchangeable writing. The characters are gathered on a pad or circular segment, attached to the center wheel with 3 letter heights. The pushing of a button triggers the movement either to the left or right of the segment. A hammer hits the paper from behind and presses it against the ink ribbon, in front of the chosen character. Two keys of capital letters. The segment is interchangeable. The keyboard has three rows of keys. The paper wraps in a metal mesh drum. The type-striking mechanism was identical to that of the pratt machine, built between 1861 and 1865. In 1921, the multiplex model came out with three interlines, that is to say, to double or triple the space between the lines. As early as 1883 the vari-ty model.

Ref. : B52GK4H8