The linotype machine was invented in 1884 by Ottmar Mergenthaler in the United States of America. A linotype machine works with a matrix molded system. An operator can type the desired text in a keyboard on the machine and the machine will fill in the letters required for each line of text, including spaces. The linotype machine revolutionized the process of printing, especially items, such as newspaper, that required many small lines of text. This image was sourced from Wikimedia Commons.