Patent GB-190403803-A (GB)
Title: Improvements in Machines for Making Paper Bags.
Inventor: HESSER OTTO
Filed: 1904-02-15
Granted: 1904-06-02
Abstract: 3803. Hesser, O. Feb. 15. Paper bags.-A machine for making paper bags is shown in plan in Fig. 47. The various parts are operated by cams on the shafts 2, 3, 4, connected by bevel-wheels 5. The essential parts of the machine are placed above the table 13. Sheets of paper are placed by hand, or by known lifting- mechanism, on the table 9, Figs. 18 and 47, or on the subsidiary table 9<a>, and are conveyed into the machine by the carriage 10, which has two rails flush with the table 9 and projections 12 to retain the paper. The carriage 10 is operated by levers from the cam a. The paper encounters the stop projections 25 on the lever 24 operated from the cam e, and is held on the table 9 by the plate 20 while two adjacent sides are gummed or pasted. The plate 20 is pressed down by the spring 22 acting on the lever 19, and is operated from the cam b. The gumming-stamps 33, 34 are mounted on the sliding carriage 30, and, when the carriage moves forward, lie side by side so as to receive gum or paste from the roller 29, revolving in the trough 28 and driven by belt pulleys 37, 38. The arm 57, mounted on the pivot 32 of the stamp 33, has an angular slot engaging the pin 35 on the standard 36, and, in the foremost position of the carriage 30, turns the stamp 33 into the position shown in Fig. 47. The carriage 30 then descends, the part 44 sliding on the bars 42 being operated by levers 47, 48, 50 from the cam d. The carriage 30 is counterpoised by weights 43. If gum or paste is not to be applied, the pawl 52 connected to the treadle 55 is left in engagement with the toothed bar 47. To effect the horizontal motion of the carriage 30, the bar 40 slides in the part 44, and is operated by the levers 45, 46 from the cam c. After being released by the plate 20, the paper, with the carriage 10, is pushed over the box 78, Fig. 20, into which it is pushed by the core 60 of square or oblong section. In the box is the thin sheet-metal plate 80, Fig. 47, fixed on the bar 79 and pressed upwards by the spring 31. When the core 60 rises, the plate 80 lifts the bag from the box 78. The core 60 slides on the bar 62, and is connected by levers to the cam f. It is retained in its lowest position by the projection 73 on the bar 74 operated by levers from the cam p. The paper is pressed into the box 78, leaving projecting flaps of unequal height, the shorter of which is first folded down by the plate 83, the other, which is gummed; then being folded by the plate 89, Fig. 47. The elastic stamp 98 then descends and presses the seam of the paper tube thus formed. The plates 83, 89 slide horizontally, and are operated by the cams g, h, Fig. 47. The lever 97 carrying the stamp 98 is mounted on the part 61, and moves with the core 60. Its end is struck by the bar 100 connected by levers 102, 103 to the cam i, causing the stamp 98 to descend against the action of the spring 99, Figs. 20 and 47. While still in the box 78, the bottom of the bag is closed on the core 60 by the folding slides 104, 111, 119, 120, Figs.27and29, operated successively by the cams k, l, m, n, as shown, and is pressed against the core 60 by the stamp 131, Fig. 20, provided with an elastic plate. The bar 132, carrying the stamp 131, slides in the ring 138, and is operated by the levers 133, 139, 134 from the cam o. The core next rises, and the bag is ejected by the plate 67<a>, Fig. 20, on the bar 67 extending through the core 60 and operated by the lever 69 from the cam q. The bag A is then available for use, but, for storage or transport purposes, it is folded flat, and the bottom is turned down as shown in Figs. 6 and 7. When pushed off the core 60, the bag lies between the side walls 189, Fig. 30, of a channel, and is first engaged at the open end by the pivoted elbow-pieces 141, mounted on the plates 153, 154, Figs. 35 and 36, between which the bag is compressed. The parts 141 are operated by links 143, which have pins engaging a slot in the lug 144 on the bar 146, operated by levers from the cam r. The plates 153. 154 are mounted on arms 155,156, which slide vertically. Rollers 164, 165 on the arms are drawn by springs 159 against the cam 161, which is rotated through a rightangle by means of the cam s. Simultaneously with the pressing of the bag, the sides are creased inwards by the plates 166, 167, Fig. 47, mounted on the pivoted arms 170, 171, operated by the cam 176, against which the rollers 178 on the arms are drawn by the spring 174. The cam 176 is operated by levers connected with the cam t. The bag has now the form shown in Fig. 6. The parts of the creased sides adjoining the bottom are pressed against the bottom by the triangular plates 168, 169, Fig. 39, fixed at the ends of the plates 166, 167, and directly connected with the arms 170, 171 by the plates 175. The stamp 192, Figs. 30 and 33, on the bar 193 is advanced by lever mechanism operated by the cam u, and bears against the upturned bottom of the bag. When the arm 203 on the pin 202, carried by the stamp 192, engages the fixed projection 207, the grip tongue 204 is turned through a right-angle and seizes the end of the bag, being held in that position by a spring. The stamp 192 then retires, drawing the bag with it along the channel 190 until the arm 203 strikes the pin 209, upon which the bag is released by the tongue 204. The sheet-metal segment 210 on the arm 211 then descends, and causes the bottom of the bag to be drawn between the rollers 216, 217, Figs. 30 and 45, which press the bottom flat as shown in Fig. 7, and deliver the bag to the inclined plate 225. The arm 211 is mounted on the shaft 212, Fig. 47, which is oscillated by means of levers 214, 215 from the cam v. The rollers 216, 217 are pressed together by the springs 218, and are revolved by means of the toothed wheels 221 and belt pulleys 223, 224. The bag falls in front of the flap 226, Figs. 30 and 46, which is mounted at the end of the storage trough 230, and turns on the shaft 227 to deliver each bag to the trough. It is operated from a cam on the shaft 4. Pivoted catches 234, working in recesses 235 in the sides of the trough 230, engage behind each bag as it is introduced. The catches are operated by rods 236, 237, connected with a cam on the shaft 4, and are held in position by the spring 240. The support 243, sliding in the trough 230, offers a slight resistance to the entrance of the bags. Fig. 8<b> shows a blank for a bag having nicks or slots to facilitate the folding and gumming of the bottom. The triangular side flaps may be left unstuck.