Patent GB-190422445-A (GB)
Title: An Improved Device for Gumming and Feeding Paper Blanks to Bag Making Machines.
Inventor: PARR ALFRED
Filed: 1904-10-18
Granted: 1905-01-05
Abstract: 22,445. Parr, A. Oct. 18. Feeding sheets.-Relates to a device for gumming and feeding paper blanks to a bag-making machine, more particularly of the type described in Specifications No. 23,162, A.D. 1892, and No. 10,278, A.D. 1904, [Abridgment Class Packing &c.]. Fig. 1 is a side elevation and Fig. 2 is a plan. A toothed quadraut 15 is driven from a shaft 18 by a connecting-rod 17 provided with a pin 21 engaging a cam 19, and drives a pinion 14 mounted upon a shaft 13, which also carries two pinions 12 engaging a rack 10 at each side of the machine. The racks 10 are connected by a bar 9 and screws 8 to a plate 31 which carries two pivoted hook catches 30. Upon the racks 10 being drawn out, the catches 30 engage and rotate two pivoted levers 26<b> mounted upon slides 5, 5<a> connected by a bar 7. This raises a frame 24, 25, 26, pivoted at the point 26<a> to the slides 5, 5<a> and carrying gumming- pads 27, 28 which raise with them the uppermost of the blanks, which are carried by a table 37. The rise of the frame 24, 25 releases two arms 60, Figs. 1 and 10, which are then advanced by a spring 61 and carry forward a plate 56 attached to their lower ends under the raised blank. The further movement of the slides 10 causes the plate 31 to strike the bar 7, which then draws out the slides 5, 5<a>, the former of which carries an extension 5<b>, Fig. 2, provided with a spring clip 62, Figs. 2 and 10. Upon reaching a pivoted arm 69, the clip 62 is opened and grasps the top blank. When the racks 10 begin to return, the arm 69, Fig. 10, rotates and releases the clip 62, which then carries the blank with it on to a table 4, Fig. 2, where it strikes a bent pin 67 and releases the blank. The return of the racks 10 also permits the levers 26<b>, Fig. 1, to rotate to their original position, thus lowering the gumming-frame 24, 25, Fig. 2, on to a gumming- roller 35. Rollers 32 attached to the frame 24, 25 rest upon plates 34 and keep the pads 27, 28 off the blank from the time they leave the roller 35 till the end of the stroke. Two pinions mounted upon a shaft 80 gear into a transverse rack 77 and a rack fixed to the slide 5, respectively. The blanks are fed from the table 4 to the bag-making machine by pins 75 attached to the rack 77. The table 37, Figs. 1 and 11, is attached to a plate 38 by studs 40 which slide in vertical slots in the plate 38. A rack 4 attached to the table 37 is engaged by a fixed detent 45<a> and a pawl 45 attached to a swinging lever 46 operated from a cam on the shaft 18 by a rod 48. An L-shaped plate 51 rests on the top of the paper blanks, and is caused to rise and fall by being connected with the lever 46 by a link 50. When the number of blanks removed allows the plate 51 to fall low enough, the lever 46 with which it is connected descends sufficiently to enable the pawl 45 to engage another tooth of the rack 44 and hence to raise the table 37. The blanks are held down at the side by the turned-over ends of a U -shaped plate 53 which is raised by the cam-andlever mechanism shown in Fig. 1 when a blank is to be withdrawn. When two blanks are to be gummed together, the above apparatus is arranged in duplicate with the following modifications :- In place of the delivery table 4, Fig. 2, each machine is fitted with a pivoted plate 85. Fig. 17. When the two gummed blanks have been delivered on to the plates 85, the racks 77 described above are drawn out, and, being connected to the plates 85 by rods 94, cause them to rotate and press the blanks together. The rods 87 upon which the plates 85 turn are mounted in horizontal slots, so that the further movement of the racks 77 draws the plates 85 apart and allows the blank to fall between rollers 96, which deliver it into a receptacle The rods 87 are kept at the ends of the slots by springs except when the racks 77 are almost fully out.