The Moving Line: January, Nineteen Fourteen

Henry Ford did not invent the automobile. He did not invent the assembly line, or mass production, or any of the individual techniques his factory used. What Ford's engineers assembled between nineteen twelve and nineteen fourteen was a specific arrangement of those existing techniques that changed the physics of manufacturing: instead of workers moving from station to station, the work came to the worker. The moving assembly line.

At the Highland Park plant, the first experiments with the moving chassis began in nineteen thirteen. By December of that year, the time required to assemble one Model T had fallen from twelve and a half hours to one and a half hours. The implications were staggering. More cars, faster, cheaper, made by workers who each performed one specialized operation thousands of times a day rather than building a car from beginning to end.

Then, on a date in January of nineteen fourteen, though the precise date is recorded differently across sources, Ford announced what became known as the Five Dollar Day: a wage of five dollars for eight hours of work, more than doubling the average wage at a time when most auto workers made two dollars and thirty-four cents a day. The Eight-Hour Day was included in the same announcement. Ford framed it as progressive. It was also calculated: workers who earned enough to afford the product they made would buy Model Ts. The line would keep running. The math worked.

The River Rouge complex in Dearborn, fully operational by the mid-nineteen twenties, was the logical extension of the same idea: iron ore entered one end, finished automobiles exited the other. It was the largest integrated manufacturing facility in the world. What you see from here is what it produced.