Patent GB-190119967-A (GB)
Title: Improvements in Machines for Covering Boxes.
Inventor: SMITH PHILIP STANLEY
Filed: 1901-10-07
Granted: 1902-09-11
Abstract: 19,967. Smith, P. S. Oct. 7. Making boxes.-Paper boxes are covered by apparatus such as that shown in Fig. 1 which is of the type described in Specification No. 19,966, A.D. 1901. The box 98, having attached to its bottom the pasted covering-blank, as shown in Fig. 46, is engaged by plungers 49, 50, Fig. 1, which are of a section corresponding with that of the box. The lower plunger 49 is carried on a bar 45 which is reciprocated vertically by a cam A on the shaft 6, through a pivoted lever 54. The upper plunger 50 is carried upwards by the plunger 49, but is adapted to be arrested in its downward movement, while the plunger 49 continues its descent, to assist in the folding of the covering- material. Under the plunger is a weighted platen 69, which receives the box, and which is moved downwards by the plungers, through an aperture in the table of the apparatus, while the folding- devices mounted underneath and round the aperture in the table, operate to fold the covering- blank over the box. The box in its descent passes between rollers 119, Fig. 46, by which the flaps 127 of the blank are folded upwards and pasted to the sides of the box, as shown in Fig. 47. The corner flaps 130 are next turned inwards and pasted to the ends of the box, by arms 139, Fig. 48, suitably mounted and operated. The end flaps 128 are on the further descent of the box folded upwards and pasted to the ends of the box by rollers 119<a>, Fig. 49, placed at a lower level than the rollers 119. At this stage the descent of the upper plunger 50 is arrested, while the edges of the flaps projecting above the edges of the box are turned inwards, as shown in Fig. 50, by devices 208, Fig. 50, the box being meanwhile compressed or held by four presser-bars 189, Fig. 51, which press the sides and ends of a box against the plunger 49. The plunger 50 is now caused to descend to fold the edges of the covering-blank against the sides and ends of the box as shown in Fig. 51. At this stage the presser-bars are again caused to operate to press the sides and ends of the box against the plunger 50. The box, which is now finished, is thrown off the plungers, as the latter again ascend towards the position shown in Fig. 1, by stripper bars 71, which pass through the plungers and are operated by the cam A through suitable mechanism. Instead of the bars 71, stripping - plates combined with brushes for cleaning the plungers of the adhesive may be used. The box now rest. ing on the platen 69 above the table is thrown off the apparatus by a spring nipple 222, which is operated, and the trigger holding which is through suitable devices released, by an arm on the shaft 6. The folding-devices underneath and surrounding the aperture in the table are operated through suitable mechanism by the cams B, C, on the shaft 6. The devices for turning in the top edges of the blank may be dispensed with, this operation being then effected by hand. The rollers 119, 119<a> are normally adapted to be oscillated or moved aside to permit of the return of the box and plungers, but this arrangement may be dispensed with, the rollers then serving also as presser-rollers. Other devices may be also used for the rollers.