Patent GB-191206704-A (GB)
Title: Improvements in or relating to a Device for Closing Charged Paper Bags.
Inventor: HESSER OTTO
IPC: B65B7/04
Filed: 1912-03-18
Granted: 1913-01-16
Abstract: 6704. Hesser, O. March 18. Packeting by wrapping-up.-The invention consists of mechanism for closing the mouths of paper bags after they have been filled. The bags c rest in transporting-vessels 200, Fig. 7, which are secured to a metal ring 500, shown in section. This ring rests on, and is guided by, rollers 502, 503, respectively, and is given an intermittent motion by means of a reciprocating pawl which engages recesses in the ring. The filled bag, after having had an advertising paper or card inserted on the top of the contents, is brought by the movement of the ring 500 into the position shown in Fig. 7. The first side a, Fig. 4, is then folded down by a folder 1, Figs. 7 and 7<a>, which is pivoted on a reciprocating slide 4 and has a tail-piece 5 provided with rollers which run on fixed cams 14. These cams are so positioned that as the folder approaches the bag, it is rotated about its pivot and closes the bag with a wiping action. In order to prevent the advertising paper from moving during the folding operation, a small plunger 43 descends on the paper and holds it in place. The folder 1 has two triangular lugs 107, Fig. 7<a>, at the sides, and when it has folded down the side a, Fig. 4, the folds so formed are pressed against the lugs by triangular side folders 2<a>, the latter, of which there are two, are carried by slides 15<a>, which slide in a guide 21 secured to a verticallyreciprocating slide 31. The folders 2<a> are separated by a cam which engages the slides 15<a> and when the slide 31 is lowered, a spring draws the slides 15<a> together so that the folders 2<a> press the sides of the bag against the lugs 107. The folders 2<a> may be provided on their edges with flanges 106<a>, Fig. 7<b>, in order to bend the folded edges of the bag so that they come into close contact with the top of the bag when folded down. The bag is next conveyed to a gumming- device which deposits on the folded portion a, Fig. 4, a patch of gum h. The gum brush or the like reciprocates horizontally on a verticallymoving slide and conveys gum from a roller to the bag top. A roller then moves on to the bag top to prevent the paper from following the gum-brush when it is again lifted. The side b, Figs. 4 and 5, is next folded down and gummed by devices similar to those described, and the bag next passes on to the device for folding- down the upstanding lugs g. This device consists of an horizontal folding-plate 71<b>, Fig. 11, secured to a vertically - moving slide 87, and a folding-plate 70<b> secured to the lower arm of a lever 72<b>, which is pivoted on a vertically moving slide 79b. The upper arm of the lever 72b carries a roller 75 which engages a fixed cam 76<a>. The folders are in their highest position as the bag comes into position beneath them, but the folder 71<b> engages the foremost lug g and bends it slightly. The slide 79b then descends. and the cam 76<a> moves the folder 70<b> into an horizontal position so that it strikes the other flap g, folds it down on to the top of the bag, and then presses it into contact with the gummed patch i, Fig. 5. The slide 87 then moves downwards and folds the first flap g. The completed packet is next moved beneath a series of pressers, and is finally ejected from the machine.