Patent GB-190105672-A (GB)
Title: Improvements in Machines for Making Paper Bags or Packets.
Inventor: HESSER OTTO
Filed: 1901-03-18
Granted: 1901-11-09
Abstract: 5672. Hesser, O. March 18. Paper bags, machines for making. The machine is shown in plan in Figs. 42 and 42<a>. Sheets of paper are taken from a pile at the station a at the right-hand of the machine, cut and gummed at the stations c, d, e, and folded on one of eight formers 115 on an intermittently-rotating disc 118 at the stations g to l. At the station m the bag is withdrawn from the former, and flattened at the stations n, whence it is delivered on one edge into a trough 348 at the station q. A pile of paper blanks are retained within angle-irons 2, and gradually raised by a rack and pinion operated through a ratchet. The top blank 1 is taken from the pile by a sucker which engages two opposite sides of the blank, and is exhausted by a pump 7. The sucker is carried on a frame 11, and deposits the blank on the table 59 at the station b. On each side of the table and level with it are reciprocating carriages 43, carrying projections 58 which engage the rear edge of the blank and push it forward intermittently to the stations c, d, and e. It is directed at each of these stations by stops 55, which pass upwards through the table 59, and is held during the return of the carriages by pressers 65, 70, 70<a>. At the station c, notches are cut out of one edge of the blank, Fig. 19, by verticallysliding cutters 260. At the station d, a streak of paste 1<a> is impressed on the blank by a stamp 88, which first receives a horizontal movement across the paste roller 90, sliding on the guide 86, and is then forced down on to the blank, its carriage 85 and guides 86 moving on the vertical guides 72. At the station e the blank is turned through a right-angle, to receive a streak of paste 1<b> from the stamp 89 by a sucker 275. At the station f it is not acted upon, but merely held by the presser 70" until the carriage 43<a> can engage it so as to push it beneath a former 115 at the station g. Here a trough rises and folds the blank against the sides of the former, and then two blades 138, 139 advance laterally and fold the edges over the top of the former, where they are held by a presser 120. The paper is held against the bottom of the former by a rod until the trough is withdrawn ; then the table 118 carrying the formers is turned by a modified form of star-wheel, and the partly-formed bag is brought to the station h. Here the top and bottom end folds are made by vertically-moving folders 165, the bag and former being gripped during the operation by jaws 180, 181. At the station i a streak of paste is impressed on the bottom by a paster 197, which travels forward over the paste roller 203, and is then turned through a right-angle by toothed gearing 193 before it engages the bag. At the station j, the side folds of the bottom are made by folders 223. 224 and the bottom is pressed by a lever. It is likewise pressed after folding and pasting at the stations h and i and levers 233 and 237 press it again in turn at the stations k and l. At the station m, a plunger inside the former is engaged by a slide, and forces the bag off a following plunger 298 engaging the bag bottom outside. The inside plunger is locked until it reaches the station m, and here, as at the station g, the presser 120 is raised by vertically-moving arms 205. After the bag has left the former, it is pushed sideways by a plunger 245 beneath a flattening-roller 310, Fig. 34, carried on arms 319 which turn about the horizontal shaft 318 as the roller descends on to the bag. A carriage with jaws 328 now seize the top edge of the bag bottom, and draw it to the station p, where the lower edge is seized between two rollers 344, and the bag is drawn downward between them, and delivered into a trough 348, Fig. 42<a>, where it is retained by a vertically-reciprocating fork, which rises behind each bag as it is deposited.