Patent GB-261025-A (GB)
IPC: B31B160/10
Abstract: 261,025. Winkler, A., and D³nnebier, M. Nov. 6, 1925 [Convention date]. Pile tables and supports for sheet feeds; sheetseparators; delivery apparatus.-In a process for making bags and envelopes of paper &c., the pieces of work arrive at the working rollers of a roller machine already once folded, the folding operation having been performed simultaneously with the feeding of the work, and they are fed to the working roller, in the direction of their smallest dimension, that is, transversely of the bag or envelope. The machine comprises a series of rollers 1 - - 22, Fig. 1, and counter rollers 1<1> - - 22<1> between which the work passes, the rollers 1 - - 7 and their counter rollers providing a vertical path for it, and the rollers 7 - - 22 and counter rollers 7<1> - - 22<1> a horizontal path. A vertical shaft 24 driven by a main shaft 23 drives directly the rollers 6 - - 3, the roller 2 being driven by the roller 3 and itself driving rubber-covered drawing-in rollers 1, 1<1>. Indirectly, through a horizontal shaft 26, the shaft 24 drives the rollers 11 - - 22, the rollers 8 - - 10 being driven from the roller 11. A pile of blanks of the shape shown in Fig. 2 is adjustably positioned by pillars 118 on a table C and the lowest blank is periodically removed by the roller 1, and the counter roller 1<1> which is set slightly above it. The rollers 1, 1<1> are mounted in interlocking arms 38, 39 of which the arms 38 are connected by a rod 43 to a lever 44 rocked by a cam 47 on the main shaft 23. When the rollers are raised, the roller 1<1> engages the lowermost blank and rucks it up between itself and the roller 1<1>, the blank being drawn downwards by the rotation of the rollers and thereby provided with a fold disposed longitudinally of it. The blanks rest upon adjustable rails 48, 48<1> to ensure proper engagement of the roller 1<1> with the blank. The finished envelopes drop on to an inclined plate 107 adapted to pass them to a slow running belt 30 which co-operates with a loosely running drum 115 to pass them along in overlapping relation. The drum depresses the belt, and, as the envelopes pass it, they gradually stand upright on the ascending portion of the belt and on its horizontal portion, leaning against a displaceable fender 116. When very thin blanks are used, the rollers 1, 1<1> are replaced by a plierlike device adapted to ensure the removal of only one sheet at a time. The rubber-covered heads 125, 125<1>, Fig. 5, of the upper shanks 140, 140<1> are mounted on common bridge pieces 127, 127<1> which are pivoted at each end by means of lugs 128<1>, 129<1> to bolts 130 mounted in levers 132 adapted to be raised and lowered bv cams 134 on a shaft 133. The lugs 128', 129<1> are formed with downward extensions 135, 135<1> which are engaged by cams 138, 139 on a shaft 137 to open and close the pliers. In operation, the levers 132 raise the heads 125 into contact with the pile of blanks and then the cams 138, 139 draw together the heads and pinch the lowermost blank between them, continuously rotating rollers 141 between the heads 125 and similar rollers 141<1> between the heads 125<1> passing the sheets down further to the rollers 2, 2<1>. Specification 245,742 is referred to.