Henry Ford：My Life and Work, Additional Excerpt 110

I believe that this was the first moving line ever installed. The idea came in a general way from the overhead trolley that the Chicago packers use in dressing beef. We had previously assembled the fly-wheel magneto in the usual method. With one workman doing a complete job he could turn out from thirty-five to forty pieces in a nine-hour day, or about twenty minutes to an assembly. What he did alone was then spread into twenty-nine operations; that cut down the assembly time to thirteen minutes, ten seconds. Then we raised the height of the line eight inches--this was in 1914--and cut the time to seven minutes. Further experimenting with the speed that the work should move at cut the time down to five minutes. In short, the result is this: by the aid of scientific study one man is now able to do somewhat more than four did only a comparatively few years ago. That line established the efficiency of the method and we now use it everywhere. The assembling of the motor, formerly done by one man, is now divided into eighty-four operations--those men do the work that three times their number formerly did. In a short time we tried out the plan on the chassis.

Source： https://www.gutenberg.org/ebooks/7213
Locator：Additional excerpt 110 · Verified：2026-10-19 · Verification：Short excerpt

公版传记；原文逐字取自 Project Gutenberg，仅摘录段落并附全书链接。

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