Ottmar Mergenthaler

By Emeka Obi

Ottmar Mergenthaler was born on May 11, 1854, in Hachtel, in the Kingdom of Württemberg, and apprenticed as a watchmaker — a trade that taught him the patience of fine mechanisms. In 1872, at eighteen, he emigrated to the United States, settling in Baltimore, where he worked in a machine shop and eventually became a partner. Typesetting in the 1870s was still Gutenberg's labor: compositors picked individual metal letters by hand, a skilled trade that bottlenecked every newspaper as circulations exploded. Inventors across America were chasing a machine to set type; Mergenthaler's shop took on the problem for a local inventor, and when that inventor's designs failed, Mergenthaler took the problem home in his head. His breakthrough, patented through the 1880s, was to cast not individual letters but entire lines: the operator typed on a keyboard, releasing brass matrices — molds for each character — which assembled into a line; molten type metal was then injected against them, casting a single solid slug bearing the whole line of type. Line-o'-type: Linotype. The machine did the work of several compositors at revolutionary speed and, crucially, the matrices were automatically redistributed to their magazines after each cast, so the machine could run continuously. The New York Tribune installed the first commercial Linotypes in 1886; within two decades the machines clattered in newspaper composing rooms across the world. Mergenthaler, worn out by the strain of perfecting his machine and by tuberculosis, died in Baltimore on October 28, 1899, at forty-five, just as his invention conquered the press. The Linotype — with its rival, the Monotype — mechanized the word for the mass-circulation age: the penny press, the great metropolitan dailies, the flood of cheap print that carried news, advertising, and mass literacy into the twentieth century all ran through its keyboards. It reigned for nearly a century until phototypesetting and then digital composition retired it in the 1970s and 1980s. The machine's choreography was its marvel: matrices sliding down from ninety channels of the magazine, assembling in the assembler, the mold wheel clamping, molten lead injecting at white heat, the slug ejected and trimmed while the matrices rode the distributor bar back to their slots — all in seconds, all without pause. A good operator set thousands of characters an hour, the work of half a dozen hand compositors. Composing rooms became foundries, hot and loud and smelling of metal, and the Linotype operator — keyboard at his fingers, lead at his back — became the aristocrat of the print trades, highly paid and fiercely unionized.

Impact on civilization

The Linotype industrialized language. By collapsing the cost and time of setting type, it made the mass-circulation newspaper economically possible — the great dailies, the wire-service age, the cheap book, the pamphlet politics of the early twentieth century all depended on composing rooms that could keep pace with events. It turned typesetting from a craft guild into a machine trade and employed generations of operators. The machine itself was superseded, first by film and then by pixels, but the century of print it enabled — the century in which more words reached more readers than in all previous history combined — was cast, line by line, in hot metal. Without the Linotype, the twentieth century's information explosion stalls: newspapers could not have grown from thousands to millions of copies, wire services could not have fed them nightly, and the cheap book revolution would have lacked its engine. Hot metal set the type for two world wars' headlines, for the civil-rights pamphlets and the stock tables alike. When cold type finally killed it, the composing rooms fell silent — but the century of mass reading it had made possible did not.