Patent GB-107031-A (GB)
IPC: B31C99/00
Abstract: 107,031. Marks, E. C. R., (Empire Paper Bottle Co.). May 11, 1916. Forming and shaping.- A machine for making bottles of fibrous material or paper comprises means for feeding the paper, applying adhesive thereto, winding it on a mandrel A, Fig. 1, to produce a cylinder after first feeding a bottom to the end of the mandrel, folding the paper into contact with the bottom, transferring the cylinder to a mandrel V upon which part of the material is crimped to form a tapering neck, and feeding and attaching a mouth-reinforcing member. The paper may be fed in sheets from a pile but is shown as fed from the roll E, between pairs of feed-rolls F<1>, H<1> and pasting-rolls I<1>, the paper passing over a slotted feed-plate E<2>. The lower one of the rolls F<1> is raised at intervals to effect the feed by mechanism operated from a driven shaft F<2>. The paper is pressed on the feed-plate by springs, and is severed by a lower fixed blade and an upper moving knife G<1> operated from the shaft F<2>. The rolls H<1> are respectively driven from the upper roll F<1> and from the shaft F<2>. The upper parting-roll I<1> conveys adhesive to the paper in the form of a sticky mass from a fountain J, and is raised and lowered for this purpose by levers &c. operated from the shaft F<2>, the lower pasting-roll being suitably driven. Adhesive is thus applied practically to the full width of the paper along a definite part thereof, but adhesive is also applied along a marginal portion of the sheet by a fountain K and other rolls. The mandrel A, Figs. 1 and 5, consists of two parts a, a<1> fitted together, as shown, and capable of sliding longitudinally one on the other, and the part a' has air-ports b<1> and a suction chamber B communicating through sleeves c with the interior of a hollow driven shaft C coupled up by a flexible pipe with an air-exhauster. The advancing edge of the paper is drawn by the air suction against the mandrel, upon which it becomes wound a number of times. Before the winding, a flanged bottom is brought up against the end of a mandrel. For this purpose, a magazine L, Fig. 11, containing a number of the bottoms Z' and fixed adjacent the free end of the mandrel, is formed with an inclined upper part and a vertical lower part 1<1> with guideways for the bottoms, which descend by gravity, their descent being controlled by two spring dogs M operated by cams N<2> on a vertically. sliding carriage moved by lever mechanism N'. Prongs m, m<1> on the dogs are thus caused to a'low the lowermost bottom to descend and to retain the others in the magazine, and so on, the dogs M being caused, by spring devices &c., to act in unison The released bottom falls on to pins N' on the carriage; springs N' retain the bottom should it escape the pins N<3>. The bottom is picked up by a plunger O alined with the mandrel A, this plunger, suitably rotated and reciprocated, advances through the carriage and, by reason of air-suction set up through its hollow body being connected with an exhauster, its head retains the bottom Z<1> as the carriage rises, the carriage being slotted to permit this rising movement. The plunger then advances and carries the bottom into contact with the face end of the mandrel A, the paper body being then wound with one edge extending beyond the flange of the bottom. A rcl] S of frusto-conical shape, suitably carried from a lever S<1> operated from the shaft F<2>, is then depressed against the protruding edge of the cylinder and, becoming frictionally rotated, turns in such edge and is then moved away whereupon a plunger P, Fig. 11, slidable on the plunger 0, advances and presses in the inturned edge around the flange of the bottom, the plungers 0, P thereto to secure the bottom, the plungers O, P afterwards becoming retracted. The shaft C of the mandrel A is mounted in a reciprocating crosshead D, and the mandrel, after the application of the bottom to the container, is thus moved horizontally, and the part a is, by reason of a special construction of the parts, moved relatively to the part A<1> to reduce the diameter and to destroy the suction action of the mandrel and release the container therefrom, so that it may drop into mechanism for conveying it to a crimping- mandrel V. This mechanism may comprise lever clamping-devices on two bars T' centred at T and operated from a cam t<5> on a driven shaft, this shaft operating the clamping-devices through a cam, chain gearing, &c. The clamped container is swung over the mandrel V, shown separately in Fig. 15. This mandrel comprises a sliding and rotating collar v<2> movable along a tubular shaft by a fork v' and having pivoted to it a series of bars V<1> also pivoted to other bars V<3>, the bars V<1> having link connexions with collars on a central sliderod. The mandrel, when collapsed, is moved into the container held by the transfer device, which then opens and leaves it. The mandrel is then expanded, as shown, with the bars V<3> tightly engaging the inside of the container, and, thereafter, a rotary crimping-head W slides over it, and blades X on this head, mounted to move with a parallel motion and controlled by a cam 36 on a sleeve 37 and by springs, move in and crimp or pleat and taper the neck portion of the container, the sleeve 37 being geared so as to turn with the head W. The mandrel parts are then collapsed and withdrawn. The container is held in position during the crimping by a section plunger 44. Before withdrawing the mandrel, a reinforcing band or tape Z<2>, Fig. 1, is wound around the mouth of the crimped portion of the container: this band (preferably already coated with adhesive) is fed, damped, and severed by means analogous to those employed in connexion with the body blank, the damping-reservoir 65 acting, however, in conjunction with the lower of two rollers. The band is fed to the collar v<2>, Fig. 15, and is wound on the container by the rotation of the mandrel, it being pressed during the winding by rolls 69, 70 moved into position at the required time.