Patent GB-283683-A (GB)
Title: Improvements in or relating to machines for binding writing pads, booklets and the like
IPC: B42C9/00
Filed: 1926-11-13
Abstract: 283,683. Pollak, J. E., (Brehmer Maschinen-Fabrik, Geb.). Nov. 13, 1926. Bookbinding-machines.-In machines for gluebinding writing-pads, booklets, &c. wherein the sheets are held in an intermittently advancing carrier with only their back edges exposed, the sheets are held in clamping-jaws provided with slidable auxiliary members arranged to yield and expose the margin of the pad adjacent to the back thereof when a cover is applied by forcing the back of the pad on to a cover sheet arranged over two spaced plates which provide a confined space for consolidating and shaping the bound back. The carrier is preferably of the revolving type with three or more radial arms a, b, c, Fig. 12, eech provided with a radially movable clamping-jaw 1 co-operating with a stationary jaw 2, the jaw 1 being controlled by a cam 3 mounted on the upper end of a central shaft 18. 'The jaws 1, 2 are provided with downwardly projecting slidable extensions 17, Fig. 5<a>, normally held depressed by springs 19 and adapted to yield upwardly when a downward movement is imparted to the carrier to force the cover sheet 24 and the pad 50 between two spaced plates 10, 11. The jaw 1 opens at the delivery station III and remains open while it is moved to the receiving station I, where it halts above a vertically adjustable table 4, Fig. 8, which ensures the correct positioning of the pad.' The jaws close to grip the pad and simultaneously the table 4 is moved horizontally from beneath the pad to enable its back to be glued by a roller 6 rotating in a. glue tank, (not shown) the roller being mounted upon levers connected to the table 4 and controlled by levers 51, 52, and 54 actuated by the driving gear of the machine. To enable the glueing-roller to be adjusted relatively to the back of the pad the levers 52, 54 are connected by a spring 56<1> controlled by a screw 56. The carrier advances the pad to station II, where it halts above a fan which cools the glue and renders it more viscous. At the third halt the pad is aligned over the spaced plates or jaws 10, 11, Fig. 5<a>, and above the cover or binding sheet 24 which is fed into position by hand or by an endless band conveyer 7. The carrier is moved downwardly by a camactuated lever connected to the lower end of its supporting shaft, causing the spring-controlled jaw members 17 to abut against stops which force them upwardly, the back of the pad being forced against a. sliding member 12 which wipes and presses the cover into position in known manner and co-operates with the members 10, 11 to shape the back edges of the pad. The slide 12 is subsequently lowered and moved to one side by a cam-controlled lever connected thereto, the gap 21 between the plates 10, 11 is widened, and the pad is ejected, falling upon a stacking-board provided with a pushing member and retaining fingers. The sliding movement is imparted to the plates 10, 11 by pivoted bellcrank levers connected thereto and oscillated by arms connected to slotted cams on the main shaft 59. The intermittently rotating carrier is mounted upon a sleeve shaft 18<1> which surrounds the shaft 18 carrying the cam 3 and has a ratchet wheel 67 mounted upon it concentrically, movement being imparted by a pawl 66 pivoted on a toothed segment 65 which is loosely mounted on the sleeve 18<1> and is engaged by a similar segment 63 pivoted at 62 and rocked by a reciprocating rod 61 operated by a cam 60 on the main shaft 59.