Novel microfilm jacket

Claim 1

A microfilm jacket utilizable for machine insertion of a microfilm strip at one end into and through a through-passage, storage, and machine removal from a far open end, comprising in combination: upper and lower elongated sheets joined at spaced apart lines forming a plurality of storage channels parallel to each other, each said storage channel extending along a longitudinal axis of the sheets and having an outlet open-end to said storage channel formed at a point between the upper and lower elongated sheets at a distal outlet end of said storage channel, and each storage channel having a normally-closed insert-opening arced slit formed by slit structure in the upper elongated sheet, with the normally closed insert-opening arced slit extending transversely to said longitudinal axis, the slit structure consisting of: (a) first section of the upper elongated sheet having an upper convex lip and (b) a second section of the upper elongated sheet having a lower concave lip in opposing relationship to the upper convex lip, the normally-closed insert-opening arced slit being at an opposite proximate end of said upper elongated sheet, the upper convex lip extending towards the proximate end; each upper convex lip along with its respective lower concave lip, storage channel, and outlet open-end jointly forming a through-passage conduit, each through-passage conduit having a normally-closed insert-opening arced slit adapted to form an insertion open-space to the through-passage conduit when the second portion at the lower concave lip is pressed downwardly sufficiently to form an angle with the first section at the upper convex lip whereby a microfilm strip is insertable through each insertion open-space into its respective storage channel and through its respective through-passage conduit, each normally-closed insert-opening arced slit extending between and up-to its respective spaced-apart lines, the ends of each insert-opening arced slit being staggered relative to the ends of the arced slits which lie in adjacent through-passage conduits so that the promulgation of tear lines caused by alignment of said ends will be retarded or prevented.