How did meatpacking plants influence the development of the assembly line?

The 19th-century meat-processing industry in cities like Cincinnati and Chicago served as the true ancestor of the modern assembly line.1

In these plants, workers utilized overhead trolleys to convey animal carcasses from one station to the next. When these trolleys were connected by chains and powered to move at a steady, machine-dictated pace, they functioned as a "disassembly" line. This system allowed stationary workers to focus on a single, repetitive task, which minimized unnecessary movement and significantly boosted productivity.1

Henry Ford later drew direct inspiration from these meatpacking methods when designing his own assembly line for automobile manufacturing in 1913. By applying the concept of moving the product past stationary workers—rather than bringing parts to a fixed assembly point—Ford was able to drastically reduce labor time and manufacturing costs.1