Patent GB-376000-A (GB)
Title: Improvements in machines for applying wrappers to newspaper, catalogues and other flat articles
IPC: B65B25/14
Filed: 1931-06-25
Abstract: 376,000. Wrapping newspapers &c. ADRESSOPRESSE SOC. ANON. DES ANCIENS ETABLISSEMENTS KL•N• ET CIE, 16, Rue de la Station, Courbevoie, Seine, France. June 25, 1931, No. 18444. Convention date, June 26, 1930. [Class 94 (i).] A machine for wrapping flat articles, e.g. newspapers, catalogues, &c., comprises a flat wrapping table and means for feeding successively thereto a wrapper and an article to be wrapped, the wrapping table incorporating mechanical elements for raising from below the side edges of the wrapper and further elements serving subsequently to press down the said raised edges over the article to be wrapped, the edges being secured one upon the other by an adhesive. Wrappers 1 stacked in a receptacle 103 are fed from the top by rubber rollers 104, the bottom plate 105, supporting the pile, being balanced by cables 108 carrying a number of weights 106 which, as the wrappers are used, are lifted off by downward movement into a member 109 to effect even pressure on the feeding rollers. The wrapper is then seized between belts 4, 5 and delivered to a reciprocating device, with hooks at the following edge to position correctly the wrapper on the wrapping table 3. In its passage between the belts the wrapper has a streak of adhesive applied to its lower face by a pasting roller 38, dipping into a bath 39, the quantity of paste being governed by a pad 40, a pointed roller 41 making small apertures through the wrapper through which pass small quantities of paste to the top surface of the wrapper to adhere it lightly to the newspaper when it is folded over. The folded newspapers &c. 2 are stacked in a number of troughs 56, each pile having on the top a fibrous &c. plate 64 with two metallic terminals. Each pile is supported by an insulated tongue 58 and an insulated screw 59. As the screw rotates the forward edge of the folded newspaper is allowed to drop but the newspaper above is still supported. The newspaper &c. is then gripped between two adjustable rotating pincers consisting of a series of spring-supported rollers 75<1> carried by arms 75 rotating on a shaft 83 and rubber bands 75<2> carried by arms rotating about a shaft 84. The newspaper is carried by the pincers to a channel 85<1> and hence to the nip of adjustable forwarding rolls 13 which in turn pass it on to rollers 14, adjustably mounted in order to feed different sized newspapers to the correct position above the wrapper on the table 3. When the folded newspapers are exhausted from one trough the plate 64 makes contact between the screw 59 and the tongue 58 and energizes an electric circuit throwing in a clutch 67 which through rack-and-pinion mechanism moves the trough frame along to position another trough for discharge. The screw 59 is rotated by shafts 74, 73, 71 through pinions 76, 77, the shaft 73 being rotatably mounted on a spring-biased frame about the axis 79. A rail 80 is provided with notches into which a roller 82 may sink at the emptying positions of the troughs to drive the screws 59 for feeding onwards the folded newspapers. When a newspaper is correctly placed above the wrapper on the table 3, one being at right-angles to the other, members 15, adjustable to suit different widths of packages, operate to turn upwardly the two edges of the wrapper. Rollers 24, 25 are now moved towards each other by the systems 31, 29, 37 ; 32, 30, the roller 24 first moving and by means of a lost-motion connection 35, 36 remaining on the turned-over flap until the roller 25 is approaching to press and thus seal the wrapper edges together. To allow of treatment of different thicknesses of newspaper the table 3 is vertically adjustable and, to facilitate the delivery of the wrapped articles, is provided with a hexagonal rubber roller vertically reciprocable and rotatable by an elastic belt. Plates 50<1>, 50<2>, 504 and a belt 503 pile the wrapped articles in vertical alignment for removal by hand.