Patent GB-1175373-A (GB)
Title: Improvements in or relating to a Device and Method for Securing Overlapped Sheets Together.
IPC: B27F7/21
Filed: 1966-11-11
Abstract: 1,175,373. Inserting lengths of tape at isolated points. LAMSON PARAGON Ltd. 11 Nov., 1966 [24 Jan., 1966], No. 50597/66. Heading DIG. Apparatus for securing together superimposed sheets comprises means for simultaneously punching a hole in the sheets and inserting a fastener in a previously-punched hole. A fixed plate 10 is rigid with a guide plate 16 on which is mounted a horizontally-movable slide 15 by means of rollers 20, 21, 22. A plate 12, rigid with the slide 15, supports the edge of a web W and is provided with a tubular die element 31. A plate 40 is slidably mounted on posts 41 upstanding from plate 12, and carries a punch element 45 adapted to co-operate with die element 31. A gear wheel 55, synchronised with the feed drive for the web W, is rigid with a cam disc 60. A lug 65, rigid with plate 12, carries a follower roller 62 engaging a cam groove 61 formed in disc 60. Gear 55 is coupled by a gear 67 to a gear 70 rigid with a cam disc 74. A plate 82, vertically slidable between fixed guides 83, carries a follower roller 85 engaging a cam groove 75 formed in disc 74, and a roller 86 carried by plate 82 engages a horizontal groove 87 formed in a block 80 rigid with plate 40. The arrangement is such that plates 12 and 40 are moved rightwards with and at the same speed as web W while plate 40 reciprocates vertically for effecting punching and stapling of web W, whereupon said plates are returned rapidly leftwards to their initial position. A bracket 100, rigid with plate 40, journals a tape supply reel 102. A bracket 105, rigid with plate 40, journals a tape guide roller 110, a tape feed roller 115 and a tape pressure roller 108. Tape from reel 102 passes around roller 110 and then downwards between rollers 108 and 115. A rotary spindle 114, rigid with roller 115, is coupled by ratchet means to a crank arm (118) carrying a roller (119) engaging a horizontal groove 120 formed in a fixed bar 121. The arrangement is such that when plate 40 ascends, crank arm (118) is coupled with spindle 114 for rotating rollers 115 clockwise to feed tape downwardly through a hollow needle 125 fixed to plate 40. An insulating block 150, rigid with plate 12, is formed with a horizontal bore 152, half of the outer end of which is closed by a lug 154, the upper surface of which is level with plate 12. Bore 152 is bushed with a sleeve 155, the outer surface of which is recessed to accommodate a heating coil 158. The outer end of sleeve 155 is formed with horizontal notches allowing passage of the web W, and with a vertical notch 192 allowing passage of the lower end of needle 125. A sleeve 160, journalled in sleeve 155, is formed at its outer end with a segmented knife blade 161, and its inner end with a crank arm 162 carrying a roller 164. A spindle 180, journalled in sleeve 160, is formed at its outer end with a quadrant-shaped block 181 journalled in sleeve 155, and at its inner end with a crank arm 182 carrying a roller 185. Rollers 164, 185 engage a horizontal groove provided in a plate 170 vertically slidable between fixed guides 172. Plate 170 carries a roller 176 engaging a cam groove 95 formed in a disc 94 rigid with a gear 90 coupled by a gear 89 with gear 70. The arrangement is such that when plate 40 descends, elements 31 and 45 co-operate to punch an aperture in web W, while needle 125 descends through a previously-punched aperture. While plate 40 ascends, tape is fed downwards at the ascending speed of plate 40, and when the latter is fully raised plate 170 descends, whereby crank arm 162 rotates blade 161 counterclockwise to sever a length of tape, and crank arm 182 rotates block 181 clockwise. Continued descent of plate 170 causes blade 161 to fold the upper end of the severed length of tape on to the upper surface of web W, and block 181 to fold the lower end on to the lower surface of web W. Heat is then applied via coil 158, whereby thermally-actived adhesive on the tape adheres to web W.