Patent GB-191306350-A (GB)
Title: Improvements in Envelope Making Machines.
Inventor: MATHYS ALBERT WILLIAM
IPC: B31B19/00
Filed: 1913-03-14
Granted: 1913-10-09
Abstract: 6350. Mathys, A. W., [Winkler, A.]. March 14. Envelopes, making. - Relates to a machine for making envelopes from previously - cut blanks, and refers more particularly to the 'device for removing the blanks from the pile and for creasing and gumming the blanks. The blanks are arranged in a pile w, Figs. 3 and 7, between guide-posts 1 and 2 and rest on a T-shaped pivoted plate 5 which is oscillated by a cam 9. When the plate swings downwards, the pile is supported by ledges 12 fixed to the bottoms of the guides 1, and the flaps e of the lowest blanks are supported partly by a ledge 20 and partly by oscillating fingers 13 which swing between the lowest blank and the rest of the pile. When the plate 5 swings upwards, the flaps e are lifted off the ledge 20 and an oscillating suction nozzle 21 grips the lowest blank and bends it downwards. The flexing movement thus initiated by the nozzle is completed by a rotating helical member 26 and as the table swings downwards again, the bent blank straightens and moves under grippers 27 on a roll 28 which remove the blank from the plate 5. The grippers hold the blank by the flap e and carry it around beneath a guide-plate 39 until the corners c, d engage movable adjusting fingers 38 which project into grooves in the gripper roll 29. The fingers 38 oscillate on a shaft 40, and when the blank makes contact with them they are moving downwards, but more slowly than the blank. At this moment, the blank is released by the grippers, but a rotating sector 43 co-operates with the roll 28 to feed the blank. It is thus pressed firmly against the fingers 38 and enters accurately between the roll 28 and a roll 50. The roll 50 has transverse slots in its surface through which blades 58 are projected periodically. These blades press the blank against a roll 52 and form creases across the bases of the flaps e and f. After passing between the rolls 50 and 55, the blank passes under bars 70, Fig. 14, arranged above the table of the machine and the side flaps g are bent upwards around these bars by means of vertically - reciprocating pushers 71. The centre part of the blank now passes between rolls 72, 73, Fig. 1, and is fed by them beneath helical folding-blades 75 which fold down the flaps g. The folded flaps are pressed by rolls 78, 79 and the lower edges of these flaps are gummed by rotating helical gumming - blades 85 which press the paper slightly into a slot in the table in order to prevent displacement of the blank. After passing between feed rolls 87, 88, of which the upper one is provided with openings to avoid smearing the gum, the flap e is deflected upwards by an oscillating finger 91, and a second finger 94 swings downwards and, catching the blank across the fold at the base of the flap e, presses it between rollers 88, 90. The flap e is thus folded down and is pressed against the gummed side flaps g. As it emerges from the rollers, the envelope is deflected upwards by a movable finger 100 and a folding-finger 107 swings downwards and catches the envelope along the crease at the base of the closing flap f, thus folding the flap and forcing the envelope between the roll 90 and a sector 99. The finished envelopes are conveyed by a suction nozzle 108 to a rotary drum 114, which deposits them in counted bundles in a rack 147 by means of mechanism described in Specification 17,721/13, [Class 100(i), Feeding and delivering webs &c.].