Typewriter the first major typewriter with these features. However, older "nonvisible" models continued in production to as late as 1915. A significant innovation was the shift key, introduced with the Remington No. 2 in 1878. This key physically "shifted" either the basket of typebars, in which case the typewriter is described as "basket shift", or the paper-holding carriage, in which case the typewriter is described as "carriage shift". Either mechanism caused a different portion of the typebar to come in contact with the ribbon/platen. The result is that each typebar could type two different characters, cutting the number of keys and
Blickensderfer typewriter Blick 8's were produced, accounting for about 10% of all Blick models sold. The Model 9, believed to be introduced in mid-1910, was similar in appearance to the Model 8, but lacked the nickel plated tabulator keys and also featured a folding ink roller arm support similar to the Blick Featherweight. Only about 10,000 machines were produced, ending in 1919. On August 4, 1891, after several prototypes, Blickensderfer patented The Blickensderfer Type Writing Machine. The central component was the use of the cylindrical shaped interchangeable type element which he initially patented on July 15, 1890. An earlier variation to Blickensderfer's