According to Chicago: City of the Century:
The disassembly line repelled novelist Upton Sinclair. "One could not stand and watch very long without becoming philosophical," he wrote in The Jungle, "without beginning ...to hear the hog-squeal of the universe." It intrigued Henry Ford. In the disassembly line of the Chicago packers, he wrote in his autobiography, he found the inspiration for the assembly line for his Model T.