Abstract: Apparatus for engaging and moving a film strip through a light-tight processor having tanks of processing chemicals, including a film clip which fastens to the front of the film and which has a rearwardly-facing opening, and a pickup member which enters the opening in the film clip to drag it and the film strip through the tanks of chemicals.

Abstract: A system for enabling X-ray films, of the type primarily used in the dental and medical fields, to be handled in daylight for exposure to X-rays. The system utilizes identical film sheets emulsion coated on one or both faces, each sheet having a notch, displaced from the sheet center line, formed in one edge thereof. A stack of sheets is packed in an opaque envelope with the sheets being alternated so that all of the notches lie along a common stack edge arranged in two parallel rows, the notches in adjacent sheets lying in different rows. The system includes a light tight dispenser which receives the envelope and is capable of being operated to strip the envelope from the film sheet stack. The dispenser includes a pair of rotatable selector cams, each aligned with a different row of notches. A spring mounted back-up plate urges the film sheet stack against the selector cams with the two selector cams respectively bearing against notched and unnotched portions of the top sheet.

Abstract: A reliable machine for developing film, which minimizes the possibility of damage to the film surface and which provides close control of processing conditions. A film strip is pulled by a detachable member attached at the front end of the strip, and is guided along the machine by rollers spaced along the film path, with each roller having a film-supporting surface at each end and a wide cutaway portion between the film-supporting surfaces so that each roller touches only edge portions of the film. Chemicals in the tank are replenished by a system which includes a plunger that moves down into the tank to cause some of the chemicals to overflow into a drain and which then moves up out of the tank to lower the fluid level therein, and a bottle with an open lower end which supplies chemicals to restore the fluid to its original level.

Abstract: A system for enabling X-ray films, of the type primarily used in the dental and medical fields, to be handled in daylight for exposure to X-rays. The system utilizes identical film sheets emulsion coated on one or both faces, each sheet having a notch, displaced from the sheet center line, formed in one edge thereof. A stack of sheets is packed in an opaque envelope with the sheets being alternated so that all of the notches lie along a common stack edge arranged in two parallel rows, the notches in adjacent sheets lying in different rows. The system includes a light tight dispenser which receives the envelope and is capable of being operated to strip the envelope from the film sheet stack. The dispenser includes a pair of rotatable selector cams, each aligned with a different row of notches. A spring mounted back-up plate urges the film sheet stack against the selector cams with the two selector cams respectively bearing against notched and unnotched portions of the top sheet.