Patent GB-721925-A (GB)
Title: A new and improved apparatus for wrapping magazines or the like
IPC: B65B25/14
Filed: 1952-08-27
Abstract: 721,925. Wrapping-machines. POPE, D. H. Aug. 27, 1952 [Aug. 29, 1951 ; Nov. 21, 1951], No. 21530/52. Class 94 (1). A machine for wrapping magazines includes at least one pair of holding members adapted to receive a magazine, means for inserting an end of a wrapper between leaves of the magazine at a side thereof, means for passing the remainder of the wrapper around the holding members and adhesively securing its free end, and means for slidably ejecting the wrapped magazine from the holding members. Four pairs of holding members, each consisting of a fixed arcuate plate 13 and a plate 14 of segmental cross-section hinged on an axis 17, are mounted on a carrier 11 which is fixed to a shaft 12 journaled in a fixed frame 10 and rotated intermittently through 90 degrees. Each plate 14 is urged towards the associated plate 13 by a spring-loaded plunger 21 which is slidable in a bracket 19 on the carrier and carries a stud 22 projecting through a slot 23 in the bracket. Mounted adjacent the periphery of the carrier are pivoted fingers 34, 38 and 41 interconnected by links 36 and 39 and movable to an operative or inoperative position by a cam-operated link 42. As the carrier comes to rest with a pair of plates adjacent a magazine feed device 43, the finger 34 is positioned to engage a projection 20 on the plate 14, whereby the latter is swung open to the position shown. A magazine is then fed spine first between the plates, from a stack supported in guides 45, whereafter the finger 34 is retracted and the plate 14 closes under the action of the plunger 21. The carrier then turns through 90 degrees and the finger 38 is positioned to engage the projection 20 and open the plates as they come to rest at the next station. At the same time, suction is applied through a pipe 31, controlled by a rotary valve 32, to orifices in the surface of the plate 14 so that the adjacent part of the magazine cover is caused to adhere to the plate and is separated from the remainder of the magazine. A wrapper 52, Fig. 6, is then fed by rollers 51 through curved guide wires 50 so that its end enters between the cover and the remainder of the magazine, a leaf spring 54 being arranged to engage the wrapper so that it is brought to rest on leaving the rollers. The finger 38 is then retracted to allow the plates to close, the suction is relieved and the carrier turns through 90 degrees to the third station. The wrapper is thus withdrawn from' the guide, this action being facilitated by the yielding of a weighted, hinged flap 53 forming the lower end of one side thereof, and is draped over a supporting plate 33 secured to the carrier. As the holding plates approach the third station the wrapper is tensioned by a spring- loaded plate 55 which is hinged on a rod 56 rotatable in the frame 10 and carrying an arm 58 which is rocked periodically by cams 60 on the carrier. A lever 63 mounted adjacent the third station, is reciprocated by a cam-operated rod 64 and carries a pivoted bracket 66 which is acted on by a spring 69 and supports the shaft 67 of a folding roller 68. As the lever moves inwardly, the roller carries the wrapper across the flat upper surface of the plate 14 and then moves downwardly, under the action of the spring 69, around the inner edge of the plate. On the return stroke of the lever, the wrapper is carried across the curved lower surface of the plate 14 and over spring-loaded tensioning plate 61 and its free end then engages a retractable gumming roller 71 which contacts a roller 73 in a bath 74 of adhesive. At the end of the return stroke, the spring 69, which has moved over a dead centre position, causes the roller to move upwardly around the outer edge of the plate, and the lever is then given a short inward movement to cause the gummed end of the wrapper to be pressed on to the part of the wrapper lying over the upper surface of the plate. The rod 56 also carries an electricallyinsulated plate 57 which, if no wrapper is fed at the second station, contacts the plate 33 and completes a circuit through a solenoid arranged to effect retraction of the gumming roller clear of the folding roller. The carrier then moves to the next station where the spring-loading of the plate 14 is relieved by the engagement of the finger 41 with the stud 22 and cam mechanism (not shown) at the rear of the carrier operates to move an ejector plate 24 which is disposed between the plates and mounted on a rod slidable in a bore in the plate 14 against spring action. The wrapped magazine is thus partially ejected from the plates and may then be withdrawn fully by a pair of counter-rotating, spring-loaded rollers which also serve to flatten it.