Patent GB-722741-A (GB)
Title: Removable binding and method of manufacture of a removable binding
IPC: B42F11/02
Filed: 1952-05-28
Abstract: 722,741. Book-binding ; filing papers. BAUR, J. WACHS-, and WACHS, W. May 28, 1952 [May 31. 1951; May 17, 1952], No. 13530/52. Classes 16 and 146 (1). A removable binding for stitched volumes and the like comprises a binding back including a rigid member 1, Fig. 1. having a generally segmental cross section and each end of which is provided with a groove parallel to the plane face of the member, the binding back having means for placing holding members 8 adapted to be engaged between two sheets 3 of a publication, the back having a cover the middle part of which 15 is held on the curved face of the rigid member 1, whereas its two lateral parts 13 are hinged at 14 to the middle part and constitute fly-leaves integral with the middle part. Two supports have their anchoring members secured in the grooves and are provided with hooks 7 for holding the bonds 8 of a cord 9. A protection is carried by the plane surface of the rigid member 1 and its two lateral sides 11 are glued to the fly-leaves 13. In a modification, Fig. 3, the middle part of the protecting member is prolonged at each end by a flap 16 carrying tongues 17 the former for engaging the ends of member 1 and the latter for securing to its curved surface. The tool for making the binding comprises a support 18 carrying two knives 20, 21, fixed and movable respectively, for making an opening 31, Fig. 7 corresponding to the grooves 4. After coating with glue the back face of member 1, the tongues 17 and protruding sides 11, the middle part 15 of the cover is applied to member 1 and counter piece 23 having a groove 24 coated with felt or rubber 25 is pressed downwardly and locked by a catch engaging hook 26. The holding members may each be formed of a wire having a central loop 45, Fig. 7, and end nose pieces 46 engaging the grooves. In another form, Fig. 5 (not shown), a pair of supports are engaged in the grooves 4 and are apertured to support holding members each of which comprises two rods on which slides a gusset. In a further form each support is formed from a wire bent to form a groove engaging portion and an axis for supporting the holding members. In another form the supports are as shewn in Fig. 1, with a rod engaging the hooks 7. Each holding member may consist of a. pair of rods 35, 36, Fig. 9, the ends of which slide in a slide block divided into two parts by a partition 47. One of these parts is closed and an opening 48 is formed for the rod 35. A spring 49 acts between the end 50 of rod 35 and the slide block. One end of rod 36 has a nose-piece 52 selectively engaged in one of has a wide part p and a narrow part m. A projection 65 on member 61 engages a notch 66 in guide 63. In a modification the two wires are locked by a pivoted locking member which a series of holes 51 in a side of the slide block. A further form of extensible holding member, Fig. 14, comprises two wires 61, 62, interengaging by means of projections 67,68, and locked by a bar 70 which is slidable in a guide 63 and has retaining means to hold it in the locked position. The members 61, 62 may each be formed by a rod of rectangular cross section one lateral edge being provided with teeth. The member 1 may be extensible, Fig. 11, by forming it in two parts 1a, 1b, a locking bar 56 being secured to part. 1a and, having nose pieces 57 to engage blind holes 58 in part 1b.