Whitin ring spinning frame. 36 spindles. Manufactured c. 1955 by the Whitin Machine Works in Whitinsville, MA. The Whitin Company began operations as a cotton mill in 1809, but began manufacturing mill machinery in 1847. Belt driven, powered by an electric motor manufactured by General Electric (General Electric Control, #79296). Attached is a SpinSaVac vacuum ("suction end-catcher") that suctions about 90% of the loose fibers created in the spinning process, a safety feature protecting workers from "white lung disease." The SpinSaVac was manufactured by the Parks-Cramer Company of Fitchburg, MA and Charlotte, NC, patent numbers 3,726,072; 3,832,839; 3,841,076; and 4,000,603. Parks-Cramer was formed in 1919 by the merger of the G. M. Parks Co. of Fitchburg, MA and the Stuart Warren Cramer Co. of Charlotte, NC. It specialized in AC for textile mills. SpinSaVac was a spin-off corporation. The SpinSaVac suction end-catcher was patented and trademarked in 1955. The patent expired in 1997.