Patent GB-190520230-A (GB)
Title: Improvements in Sheet Delivery Mechanism of Printing Machines.
Inventor: LOCK WILLIAM HENRY
Filed: 1905-10-06
Granted: 1906-07-05
Abstract: 20,230. Lock, W. H., and North, T. M. Oct. 6. Delivery apparatus for printing- machines, adapted to deliver the-sheets with the printed sides either up or down. The printed sheets are delivered by the cylinder of the machine on to a series of tapes 1, Fig. 1, passing round continuously driven rollers 5, 6, supported on shafts mounted in side frames 7 of the machine. The sheet is thence delivered on to intermittently driven tapes 2, passing round rollers 8,9 mounted in opposite ends of a reciprocating carriage 10, supported by roller. 45, which run on track bars 14. The carriage is reciprocated by two spur-wheels 21 on the shaft 20, which engage racks formed on the underside of the side bars of the carriage, the shaft 20 being rotated alternately in opposite directions by a pinion 19 mounted thereon, gearing with a suitablyoperated reciprocating rack-bar 18. The tape roller 9 at the delivery end of the carriage 10 carries at one end a pinion 24, which engages a rack 13 formed on the underside of the track bar 14. The pinion 24 is loosely mounted on the boss of a wheel 6, secured to the shaft 23, which wheel is formed with a series of inclined cam surfaces 27 and fits loosely into a flange 28 integral with the pinion 24. Between the surfaces 27 and the flange 28 are a number of rollers 29, which, when the pinion 24 is rotated in the direction indicated by the arrow b, Fig. 2, by the inward motion of the carriage, move outward along the surfaces 27 and are jammed against the flange 28, thus rotating the shaft 23 and the roller 9, while, when the pinion is rotated in the opposite direction during the outward motion of the carriage, no rotary motion is communicated to the roller 9. Feathered on the shaft 23 is a pinion 31 which may be slid into or out of gear with a wheel 33, mounted similarly to the wheel 24, on a countershaft 37, which, at its other end, carries a pinion 42 gearing with the rack 13. The carriage 10 also supports two shafts 43, 44, the former of which carries one or more sheet guides 45<a>, while on the latter are mounted the track rollers 45 and a series of adjustable brackets 46, each of which is provided with two tape rollers 48, 49 and a pivoted curved arm 12, carrying at its extremity a third tape roller 52. Passing loosely round the rollers 48, 52 are tapes 3 which, when the arms 12 are turned down into the position shown in Fig. 2, rest in driving contact with the tapes 2 on the sheets passing over them. When it is desired to deliver the sheets printed side up, the arms 12 are turned upward, the tapes 3 being held taut against the rollers 49, and the tapes 2 driven on the inward motion of the carriage by the wheel 24. To deliver the sheets printed side downwards, the arms 12 are turned into the position shown in Fig. 2, and the tapes 2 driven during both the inward and the outward motions of the carriage from the pinions 42, 24, respectively, by sliding the wheel 31 into gear with the wheel 33 on the shaft 37, by which arrangement the sheets are turned over as they pass between the tapes 3 and the roller 9 on to the table 11.