Marker for x-ray films

Claim 1

A marking device for x-ray films comprising, a thin, flat holder for attachment to a film cassette and having no substantial transverse projections extending away from the plane of said flat holder, said holder including a wall of radio-opaque material having first and second elongated openings parallel to each other where characters may be positioned to be marked on the film by x-ray exposure, said holder further having a plurality of partitions defining a plurality of channels parallel to each other and to said radioopaque wall and perpendicular to said elongated openings, said channels being arranged in first and second spaced groups, each of which leads to a corresponding one of said openings, marker strips located in each of said channels between the partitions and slidably mounted therein, each said strip being composed of radio-translucent material carrying a plurality of radio-opaque characters on it, a plurality of said strips being superposed over each other in each of said channels, with the strips being slidable to or from the openings to enable selected characters of the strip to be positioned at the openings, the superposed strips in said first group of channels being located adjacent to the first opening with the strips in each channel in such group bearing a complete alphabet divided between said strips to formulate the name of a subject at the first opening, and the superposed strips in said second group of channels being located adjacent to the second opening with the strips in such group bearing a series of characters divided between said strips by which dates may be formulated at the second opening.