GB674181A - Improvements in means for feeding continuous stationery to printing machines - Google Patents

Abstract

674,181. Addressing and like machines. ADREMA, Ltd. Oct. 5, 1950 [Oct. 5, 1949], No. 25591/49. Class 100 (ii). In an addressing or like series printing machine, continuous stationery is fed step by step past the printing position of the machine, the stationery web is folded along a transverse line of weakness previously provided in the web, and a bar is provided for engaging in the fold of the web and driven so as to advance the web. In the embodiment described a pile of fan-fold stationery is drawn through an addressing machine by a feeding unit 12, the web passing under a roller 14, adjustable vertically by a knob 58, and over a roller 15 after emerging from the addressing machine. The web then passes through transverse bars 16, 17, the bar 16 accommodating a wedge housing 19 having a wedge therein to allow one way movement only of the web. The web then passes through guides 59, 60. The feeding unit comprises a continuously driven shaft 22 which drives, through gears 23, 24, a shaft 25 having mounted at its upper end a crank arm 27 carrying an adjustable pin 28 working in a slot in a carriage 29 so as to reciprocate the carriage. The gears 23, 24 are such that shaft 25 is stationary for about 60 degrees of the rotation of shaft 22 in each cycle. The carriage 29 carries a shaft 30 and arms 33 mounted for slight rotational movement, the arms 33 being mounted through links 34 to arms 35 on a carriage 37 and to a shaft 38. The carriage 37 carries a shaft 36, and on shafts 36, 38 are mounted arms 39 the rear sides of which are connected by a plate 40 which cooperates with stop 41 for limiting clockwise rotation of the arms 39 when the shaft 38 moves rearwardly relatively to the shaft 36. The forward sides of the arm 39 carry rollers 42 which co-operate with a bar 43 of the carriage which is formed at its upper edge with a knife 20. In operation, as the carriages are moved rearwards the arms 39 are rotated in a clockwise direction,. owing to the pull on the link 34, until the stops 41 are engaged, the rollers 42 being raised from the bar 43 so as to deflect the leading edge of the stationary web downwardly. As the carriages are moved forward the arms 39 are rotated in an anti-clockwise direction so that the rollers 42 bear against the bar 43 and grip the web. The distance of travel of the carriages is determined by stops 45 adjusted by a knob 48 and is such that the web is folded by the action of the arms 39 at one of the lines of transverse weakness previously provided. The carriage 37 in its forward movement carries with it the web folded over the bar 43. At the end of the forward travel the web is cut by a guillotine blade 21 co-operating with the knife edge 20. The blade 21 is carried in a frame 49 (not shown) movable with the carriage 37 and urged upwardly by springs 52. A gear 57 rotated in timed relationship to the shaft 22 serves to operate an electric switch energising solenoid 55, which, through bar 53, pulls down the guillotine blade to sever the web.