Patent GB-350514-A (GB)
Title: Delivery mechanism for signature stitching machines
IPC: B65H29/66
Filed: 1930-02-14
Abstract: 350,514. Delivery-apparatus for signature-stitching machines. BELLUCHE, E. W., 1028, Douglas Avenue, Racine, Wisconsin, U.S.A. Feb. 14, 1930, No. 5045. [Class 100 (i).] Signatures are delivered from a stitching machine 7, Fig. 4, to a conveyer 27 driven by a pawl and ratchet mechanism which is normally inoperative and is thrown into operation by the engagement of each signature with a trip device as it is travelling towards the conveyer from the machine. A blade 8 lifts the signature from the saddle structure 7 of the stitching machine and it is gripped between a roller 9 and an endless band 11 which deposit it on the conveyer 27 so as to overlap the preceding one. In order to lessen the tendency of the leading edge of the signature to follow the rollers 9 on its delivery side, the roller 15 carrying the delivery end of the band 11 is rotatable on plugs 66 carried eccentrically on a shaft 67 and can be adjusted therefore so as to allow the slope of the run of the band to be altered. The conveyer 27 consists of a number of belts passing over an adjustable roller 21, Fig. 1, and an intermittently driven roller 19. A ratchet disc 29 is fixed to the end of the shaft 17 of the roller 19 and is engaged by a pawl 30 carried by an arm 31 fixed to a toothed gear 34 freely mounted on the shaft 17. The gear 34 meshes with a rack 37 reciprocated by a rotating disc 50, the stroke being varied by radially adjusting the bolt 51 connecting the rack 37 to the disc. Also, the disc 50 can be adjusted circumferentially on its driving shaft so that the time at which the conveyer is moved can be altered relatively to the operation of the blade 8. A roller 44 on the pawl 30 normally rides on a semicircular member 43 carried by a bent lever 45 so as bo prevent engagement between the pawl 30 and the disc 29. The lever 45 is held in this position by a lever 63 engaging a pin 65 thereon, the shaft 62 of the lever 63 also carrying fingers 61 which project between the belts 11. Cam parts 48 on the disc 50 engage a roller 47 on the lever 45 and the lower part thereof permits the member 43 to fall when the lever 45 is disengaged from the lever 63 as subsequently described and allows the pawl 30 to engage the ratchet disc 29 just at the beginning of the forward movement of the rack 37 and arm 31. If no signature is delivered, the fingers 61 remain in their lower position and the lever 63 prevents the lever 45 from dropping so that no movement of the conveyer takes place. If a signature is present, however, the fingers 61 are lifted and the lever 63 moves to release the lever 45 which is then under the control of the cam parts 48. The disc 50 is so adjusted on its shaft that the lower cam part reaches the roller 47 before the trailing edge of the signature passes the fingers 61 so that the conveyer starts to move approximately at the time the signature is leaving the pulleys 9 and tapes 11. In order to maintain the edges of the signatures flat on the conveyer 27 wheels 72 are provided to rest thereon, and are carried by arms 73 freely pivoted on but adjustable along a transverse rod 74. A plate 28 is fixed beneath the belts 27 to support them.