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
Cylindrical drum Cylindrical drum Cylindrical drums are a category of drum instruments that include a wide range of implementations, including the bass drum and the Iranian "dohol". Cylindrical drums are generally two-headed and straight-sided, and sometimes use a buzzing, percussive string. The Iranian "dohol" is a famous form of cylindrical drum. Many music areas nears in the Middle East, North Africa and Central Asia include variations on the dohol and cylindrical drum forms, including the "dhol" of Armenia, "daval" of Kurdistan and the "tabl ballady" of Egypt. Southeastern Europe is home to cylindrical drums like the "tapan" of Macedonia and the "dauli"