How does a typewriter constitute a mechanism?

In a manual typewriter, the type hammer mechanism stays still while the paper (wrapped around a rubber roller on the carriage known as the platen) gradually moves to the left. In an electric typewriter, the paper and the carriage stay still while the golfball or daisywheel gradually move to the right. read more

A spring mechanism allows the pressed key to return to its natural position, while the roller mechanism holding the paper moves one space to the left for the next character impression until the right edge of the paper is reached. read more

Long before the desktop computer became the must-have business machine, the electric typewriter was conceived by a number of inventors as an improvement on the manual machine that had been around, in one form or another, since the early 19th century. read more