GB243303A - An improved saddle for the table of book-stitching machines - Google Patents

Abstract

243,303. Stõubli & Co. Geb. Nov. 20, 1924, [Convention date]. Book-stitching machines. - In a machine having eyed and hooked needles 11, 12 passing through the signatures to co-operate with loopers 32 within the saddle, the signature is supported on a saddle-plate 36, Fig. 6, which is cut away to form a loopshedding incline c. The saddle is provided with a cover-plate 37. A shaft 15 is journaled in blocks 17 guided in the standards 2, Fig. 2, and carries the arms 23 of the work-support 26. The plate 36 is mounted on the support 26 and is vertically grooved for the passage of puncturing-needles 30 carried by a slide 27 mounted in the support 26. A looper-carrying slide 31 is also mounted in the support 26. Cam-discs 4, 5 at either end of the shaft 3 are formed with cam-grooves 6 for directly oscillating the worksupport arms 23 through rollers 25. The work-support is raised, when under the stitching-rail 49, by peripheral cams 21 on the discs 4, 5 in engagement with rollers 18 on the shaft 15. The movement of the support away from the stitching-point acts to strip the sewn signatures therefrom. The support may be pivoted below the work. The slide 27 is directly reciprocated vertically by cam-grooves 8 and the slide 31 laterally against a spring 34, Fig. 1, by a face-cam 35 on the disc 5. A needle-carrying beam 10 is vertically reciprocated in the standards 2 by cam-grooves 7. A bar 38, vertically reciprocated in the standards 2 from cam-grooves 9, carries a thread-tensioning pin 41 which is actuated periodically against its spring by a cam-member 47 on a slide 42 which is laterally shifted by face-cams 45, 46 on the discs 5, 4.