An Improved Method of Fastening Book Covers for Binding Loose, or Removable, Leaves.

摘要

27,032. Maw, E. C. Nov 28. Filing papers &c.-The covers C, D of a looseleaf binder are provided at the rear edge with metal strips A, B, the former having drilled and countersunk holes E, and the latter having drilled and tapped holes F for the reception of screws G The papers, which have suitable holes and slits at the rear edge, are held in the binder by screws G which are made in sets of varying length and are operated by a key H. To insert or remove a sheet from the binder, the screws G are replaced by the longer posts I, J so that the covers can be drawn apart. The screws G and posts I, J may be replaced by telescopic screw posts, as shown in Fig. 4.