General view of the third continuous spinning machine used during the early stages of nylon production and research at the DuPont Experimental Station in Wilmington, Delaware. This machine became the prototype for the continuous spinning machine used at DuPont's first nylon pilot plant and was notably taken to Europe in July 1938 by Don Hull to demonstrate the nylon process. During production, nylon chips were fed into the pipe hopper at the top of the machine and then dropped onto a hot grid, where they melted. The melt subsequently flowed through a booster pump designed to help eliminate gas bubbles and ultimately was extruded through a spinneret to form filaments. Finally, the filaments were processed through a steam chimney and wound onto a bobbin at the rate of 1,000 feet per minute.