Some Kodak and Brownie folding cameras made from 1914 to the 1930's have a little door on the back which is marked "use Autographic film A-(number)". A-116 film, for example, was for the same size pictures as 116 film but instead of red and black duplex paper, the film was wound with a sheet of carbon paper and thin red paper. This film used in an Autographic Kodak camera allowed a brief message to be written on the film in the space between the pictures. Pressure of a stylus on the backing paper transferred the carbon to the red paper and light passing through these lines in the carbon paper would photograph the message onto the film.
so the 116 is (was) a BW iso 50 roll film that wasn´t produced after 1984, shit.then i´ll build something.i must say: the camera is in a very good condition thx guys.u help me alot.