Patent GB-190527287-A (GB)
Title: Improved Means for Making Boxes or for Covering Boxes or for both Making Up and Covering the same
Inventor: COMINGS WILLIAM RIGHTER
Filed: 1905-12-30
Granted: 1907-03-30
Abstract: 27,287. Comings, W. R. Dec. 30. Box-making machines.-Relates to machines for making or covering cardboard or metal boxes, or for both making and covering the same, the invention being described with reference to the covering of previously-made boxes or lids. The covering- blank 79, Fig. 1, is placed on a folding-die, comprising a base-plate 1, primary wings 2, and secondary wings 3 with trip-fins 4, which is mounted on a spring-supported stem 30, and the box 20<a> is placed on the plate 20 of the plunger 17, carried by a sliding frame 11. The plunger 17 may be adjusted with reference to the die either by a ball-and-socket joint 60, Fig. 8, or by the provision of adjustable bearings on the die-stem. The sliding frame 11 is lowered against the action of the springs 15 by depression of the treadle 81, causing the plunger to descend and force the die downwards. The rigid closer jaws 38, Fig. 7, then operate to fold up the corresponding pair of primary wings 2, and, on the continued descent of the die, projections 31 engage with trip-levers 32 to cause adjustable fingers 6 to tuck in the corners of the covering-blank, as shown. By the further descent of the die-stem, the levers 32 are released, and, together with the rock-shafts 33 carrying the fingers 6, return to their normal positions under the influence of springs 80, 50, Fig. 4, respectively. The hinged closer jaws 35 are then turned up vertically by the fingers 34, thus folding up the remaining pair of primary wings. The covering is completed by the action of turning over the secondary wings by the engagement of the tripfins 4 with the closers 38, 35, the presser-arms 21, 22 which descend with the plunger continuing their descent, until they are in contact with the secondary wings, to force the covering-blank on to the inside of the box. The hinged closers 35 are also pressed firmly into contact with the box by springs 63. Both pairs of closers 38, 35 are mounted on brackets adj ustablein slideways, and they may be either rigid or hinged if desired, and the presser-arms 22 are preferably longer than the arms 21, to assist in turning down two of the covering- flaps in advance of the others, and are telescopic. The arms may be replaced by a frame surrounding the plunger. The arms 22 and the plungers 17 are permitted to have a yielding action regulated by means of the device shown in Fig. 8. The pressure required to telescope the plunger is greater, when the screws 55, 55<a> are adjusted to allow the spring-pressed ball 53 to project farther into the slot 59. The die may be worked without primary wings by having swinging closers with secondary wings and trip-fins. For making or covering flanged boxes, the die is made as shown in Fig. 11, so that the lower edges 71 of the wings 2, provided with elastic or pneumatic pads, fold the blank, preferably previously scored, over the flange 68. The finished box is detached from the plunger during the up-stroke by a pneumatic puff ejector, consisting of a tube 87 and a piston 86 operated by the cross-bead 88. Instead of the means described or an elastic reservoir being used, the crosshead may operate the spring valve of a compressedair reservoir. For use with stiff paper, the primary wings may be attached to the base by an elastic hinge, and rollers or other friction surfaces may be employed to raise the wings slightly as they are folded in.