Collecting the History of Cinema
The 35 mm Portable Film Projector was an invention of the American Herman Adolf DeVry, DS, Engineer, Manufacturer and Educator, in 1915. The films could now also be screened outside the cinemas, in schools, in Churches, in houses, as the Machine was easily transported like a suitcase.
Portable models DeVry "Type E" 35mm became extremely popular, over 50,000 of them were sold.