Bell & Howell Company was started in 1907 in Wheeling, Illinois. They manufactured motion picture cameras and projectors. The company merged with Böwe Systec Inc. in 2003; it was known as Böwe Bell & Howell. In 2011, Versa Capital Management bought the company and returned it to the name Bell & Howell.
Engineering drawings for various elements of the Filmo-arc motion picture projector; also two patents, one for a strip feed mechanism, 1937 (and the 1934 application for it), and a 1967 patent for a combined footage counter and end of film run indicator for a motion picture camera.
Bell & Howell Company Drawings, 1934-1967, Archives Center, National Museum of American History