Development of Production Methods
It was then that piece by piece progression from one machine to the next was adopted and became known as "progressive line assembly". By this method, the work moves through the various stages of production, piece by piece, from assembly to inspection, pressing, and shipping.
A later development of this has been the "progressive bundle" system. Here the parts move in pre-determined equal quantities to assembly in bundles, each operator performing her specific operation. These modern production methods enabled the sewing industry to meet the heavy wartime production demands of the past few years. Clothing and sewing equipment for our Armed Forces, lend-lease for our Allies, and essential civilian goods were turned out in tremendous quantities on high-speed sewing equipment.
What the future of the sewing machine and the sewing industry is to be is unpredictable. The joining of cloth is probably the oldest art in the world; however, it would require a closed mind to say definitely that needle and thread will not someday be replaced. Nevertheless, before that time, there will be many improvements and developments in the industry that would amaze our engineers today. Just as our present equipment differs vastly from yesterday's, so tomorrow an idea for a new product will involve the use of a sewing machine not yet designed.