Determining responsibility for development of the moving assembly line

The development of the moving automobile final assembly line was a major milestone in manufacturing. The techniques required to make it work are demanding, but the resulting increase in productivity is phenomenal. Consequently, and not surprisingly, some people have claimed a major role in its development. The initial date for this innovation is either July 1908, or August 1913 and credit is given to Henry Ford, Charles Sorensen, Clarence Avery, or W.C. Klann, depending on whom one reads. This paper tries to clarify what happened on these dates and who was responsible. Investigation reveals that each of these men did play a role in development of the moving automobile assembly line.