This lifts the bar key so that the indentation on the key will be placed in the correct position once it strikes the ribbon. The tab key is pressed at the same time a key is struck. When pressed, the position of the bar key shifts, thus positioning itself once it strikes the ribbon. The shift tabs are usually found at each end of the keyboard. Typewriters also have shift mechanisms which enable the writer to press different characters on the same bar key. Therefore, the platen moves horizontally, then vertically, until the entire margins of the paper are filled. This lever is pressed at the same time the platen is pushed back into position. A lever also allows the platen to shift vertically to begin the next row on the paper. When the platen reaches the page margin, the machine will make a ringing sound, alerting the typist to push the platen to its original position.
#TYPING A FUNCTION IN SCIDAVIS SERIES#
This allows the typist to create a series of words and sentences across a single line. As each key is struck, the platen moves horizontally so that the position of the paper moves from right to left. This force then leaves an impression on the paper with the corresponding character. When a key is struck, the pressure of the movement causes the corresponding bar to strike the ribbon of ink.
This sets limitation for the typewriter when it moves from one end to the next. Adjustments for indentation and paper margins are then set, using metal markers that are found along a ruler just beneath the platen. First a sheet of paper is placed then rolled into the platen, using a turning dial at the end of the platen.
While the function of the typewriter might seem simple, there are a number of different processes occurring at the same time that make the machine function efficiently.
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