Telephone index devices

Claim 1

A telephone index device for use with a telephone instrument, said device comprising a flat base member having a first base member portion and a second base member portion, said first and said second base member portions being separable, said flat base member portions lying in longitudinal peripheral edge-to-edge coplanar relationship, means for holding said base member on said telephone instrument in a manner such that said longitudinal peripheral edges of said base member portions are parallel to the longitudinal axis of the telephone instrument, a plurality of leaf binding loops of inverted U-shaped configuration for securing a plurality of sheets to said base member, each of said loops being permanently secured to one of said base member portions and extending up from said one of said base member portions and looping over and extending down to the other of said base member portions, each of said loops having a free end for engaging the other of said base member portions, one of said flat base member portions having a plurality of projections extending in the plane thereof away from the longitudinal peripheral edge thereof, each of said projections having lateral extensions at a portion thereof spaced from the base member portion, a plurality of recesses formed along said longitudinal peripheral edge of the other of said base mEmber portions, said recesses having corresponding formations for receiving said projections and the shapes of said projections and recesses being such as to interlock the projections and said recesses and prevent movement of said portions in their plane, and means for preventing relative movement out of their plane.