Sholes and Glidden typewriter length. The redesigned platen also introduced the modern spacing functionality (horizontal and axial movement providing letter and line spacing, respectively). The cylindrical platen became "an indispensable part of every standard [typewriter]". By the end of 1872, the appearance and function of the typewriter had assumed the form that would become standard in the industry and remain largely unchanged for the next century. Although the machine possessed a cylindrical platen and what was essentially a QWERTY keyboard, two design elements that would later become essential were lacking: the ability to write in upper and lowercase letters and "visible" print. Although the
The Typewriter typewriter sounds: the sound of typing, the "ring" of the carriage return (a standard desk bell is used for it), and the sound of the typewriter carriage returning. In some case the sound of the typewriter carriage returning is made by musical gourd, flute, string or other instrument. The typewriter was modified so that only two keys work to prevent the keys from jamming. According to composer himself and other musicians typewriter part is hard because of typing speed: even professional stenographers can not do it, and only professional drummers have the necessary wrist flexibility. It has been called one