The Linotype pushed printing to a new frontier in the late 19th century, by creating a “slug,” or a metal line of type, at a time, in contrast to the previous methods of setting one letter at a time. By the 1960s, newer technology made the Linotype a thing of the past. But its fascinating complexity and the tangible delivery of its mechanisms continue to captivate print aficionados today. Here is a film about it.
Want more on the Linotype? See its History and Anatomy on Wikipedia