Patent GB-710210-A (GB)
Title: Improvements in or relating to book covering machine
IPC: B42C11/04
Filed: 1952-03-19
Abstract: 710,210. Bookbinding. LEVINE, S. V. March 19, 1952 [Oct. 20, 1951], No. 7077/52. Class 16 Apparatus for folding a cover sheet about a book having a spine to which the cover has been adhesively applied, includes a pair of presser plates at least one of which is adapted for reciprocating motion toward and away from the book positioned between the plates to apply pressure to the book and cover, at least one of the plates having a narrow ridge portion extending longitudinally thereof on its pressing face and aligned with the spine, to form a sharp crease in the cover spine, to form a sharp crease in the cover. Cover applying station. In the cover apply section A, a book filler 110 is passed by hand through guide lips 109 to a pair horzontal guide bars 105, 106 and held with its adhesive covered spine downwardly over a stack of cover sheets 130 on a vertically reciprocating platform 120, the operation of which presses the top cover on to the spine of the book. The guide bars 105. 106 are adjustably mounted over a central slot in a table 100 by means of horizontal slotted lugs 107 secured by nuts 108 and the filler- 110- is positioned..by a stop 140, hinged at 141 to the machine frame which is moved to its stop position 140<SP>1</SP>, Fig. 2, before the platform 120 reaches its uppermost position. The covers 130 are positioned on three sides by vertically disposed rods 131 adjustably secured in slots 132 in the table 100 by nuts 133 and passing through similar slots 135 in the platform 120, and on the fourth side by four guide rods 250 which are bent to extend over the cover folding section and are arranged to leave a gap under the table 100, through which the spine of the book and its attached cover are passed when the stop 140 is lowered. The platform 120 is guided by rods 121 running in guide blocks 122 mounted on the machine walls 300. Cover folding station. At the cover folding section B, presser plates 205, 206 are mounted for reciprocation by means of lugs 208 on horizontal flanges 207 which ride in parallel guide rods 209 secured to brackets 210. 211 which are mounted on a table 200 and carry a central table 215 engaging the lower sides of flanges 207 and forming a stop for the book 110<SP>1</SP> and attached cover 130<SP>1</SP>, the cover 130<SP>1</SP> being partially bent up, as shown in Fig. 4, by passing down between the central guide rods 250. For reciprocating the presser plates 205, 206 together, a double rocker arm 216 is pivoted in a bearing 217 on the underside of table 215 and carries a post 218 at each end. A rocker arm 226 carrying a post 228 at each end is pivoted in a bearing 227 extending through table 200 and is fastened to its driving shaft 235 which, below bearing 227, carries a cable pulley . 236 adapted . to be angularly reciprocated. Pivotally connected transfer rods 220. 221 interconnect the corresponding pairs of posts 218 and 228 and a pair of operating rods 222, 223 connect between the posts 218 and pivot posts 224. 225 centrally mounted on the underside of flanges 207 so that the plates 205, 206 are reciprocated as the cable pulley 236 is oscillated. The plates 205, 206 are biased to the separated position by a spring 230 between an arm 231 on pulley 236 and a post 237 secured to table 200. Each presser plate has along its lower edge a narrow ridge 204 to give greater pressure along the edge of the spine and the ridge may be of square section or bevelled off. The finished book is removed automatically by an ejector finger 272 secured at one end to a special link 270 on a chain 260 continuously rotating over sprocket wheels 261, 262 mounted on shafts in bearing standards 263, 264, the shaft in bearing 264 carrying a driving sprocket 265 for a chain 266 extending through table 200 to a sprocket 267. The chain, run is disposed so that the finger 272 when removing a book passes above the plates 205, 206 but below rods 250 and passes just over the table 200 on its return. A guard 275 is provided and delivery ways 280, 281 facilibate ejection. To allow two or more pressing operations for each book, where the books are unusually thick or heavy, the pressure plates may be lengthened to accommodate two or more books and the ejector mechanism modified, as by providing, a series of chains 260 and rods 272. Operating mechanism. The operating mechanism provided for all the above operations in a section C below sections A and B comprises a beam 301 pivoted in a bearing standard 302 mounted on the underside of table 200, and oscillated from a motor 306 by a drive shaft 308 carrying a disc 303 having a stud 304 sliding in a slot 305 cut in the beam 301, the shaft 308 also carrying the sprocket 267 for continuously driving chain 260. To reciprocate the platform 12.0, two springs 311. 312 are secured by studs 313, 314 to spaced positions on the front end of the beam 301 and at their opposite ends by a single stud 315 to an operating rod 125 pivoted to a mounting 126 secured to the underside of platform 120, so that up and down movement of the platform by the beam 301 is cushioned by the springs and the top cover is spring-pressed on to the spine of the book. To operate the stop 140. a cable 321 is secured by a stud 320, positioned under the stop, to the beam 301 and at its other end to a driving red 145 pivoted to a lever 142 secured to the underside of the stop 140, the driving rod 145 passing through a compression spring 146 held between a washer on rod 145 and a fixed plate 147 fastened to table 200, the stop 140 being pressed to pivot to its up position by the spring 146 as the beam moves towards its upper position shown at 301<SP>1</SP> in dot-dash lines in Fig. 2. To reciprocate the presser plates 205, 206, through the cable pulley 236, a pull cable 331 is secured at one end to the rear end of the beam 301 by a stud 330 and at its other end to a pulley 332 on a counter shaft 333 journalled in a bearing 334 on the underside of table 200. A cable 336 is attached at one end to a tension spring 337 secured to the grooved cable pulley 236 and at the other to a second pulley 335 on the shaft 333, the relative sizes of pulleys 332 and 335 being arranged to adjust the ratio between the rear stroke of beam 301 and of the cable 336. With the position shown in Fig. 2, the spring 230 holds presser plates 205, 206 separate and spring 337 just holds the cables 331 and 336 taut. As the rear end of beam 301 moves down to position 301<SP>1</SP>, the spring 337 is stretched but pulls on the pulley 236 against the lesser pull of spring 230. By this arrangement the presser bars are operating on one book while the platform 120 is pressing a cover on a second book inserted by the operator, and all operations are spring cushioned.