Patent GB-190913382-A (GB)
Title: Improvements in Wrapping Machines.
Inventor: HOPKINS ARCHIBALD ELMER
IPC: B65B11/32
Filed: 1909-06-08
Granted: 1910-03-24
Abstract: 13,382. Hopkins, A. E., and Fellows, O. S. June 8. Packeting by wrapping-up. - Relates to a machine for wrapping candy caramels, and consists in providing the pockets of the wrapping- wheel with automatically adjustable bottoms, and also in providing yielding or relief mechanism for those parts subject to undue stress owing to the presence of a caramel of abnormal size. The wrapping-wheel C is driven intermittently by means of a Geneva-stop gear, and the strips of caramel are fed down a shoot G'', Fig. 3, on to a table G, which is intermittently rotated from the main driving-shaft B. The table carries near its periphery a number of vertical knives g<2> with the cutting-edges pointing inwards, and the caramel strips are pressed on to the knives and severed thereby, by means of two oscillating presser feet H, H<1>, as described in Specification 13,381/09, [Class 87 (ii), Moulding plastic &c. substances]. Each caramel as it comes opposite the wrapping-wheel, Fig. 5, is pushed by a plunger k<3> through a die and into one of a number of pockets in the wheel, a strip of paper having previously been fed up a shoot e<4> and positioned between the caramel and the pocket and subsequently cut off by knives i<1>, i<2>. If abnormal resistance is offered to the passage of the caramel, a spring catch releases the plunger k<3> from its driving - mechanism. To accommodate caramels of varying thickness, the bottoms of the pockets in the wrapping - wheel are movable and are pressed down until the top of the caramel is flush with the surface of the wheel, whereupon the bottom of the pocket is automatically retained by a spring friction brake. The wheel next rotates to bring an empty pocket into position, while the filled pocket with the edges of the paper protruding is moved beneath a rocker shoe m<1>, which descends and is moved over the surface of the wrapping-wheel by cam mechanism so as to fold down one of the protruding edges x, Fig. 44, of the paper. The operating-mechanism is provided with spring joints so that the rocker shoe may yield when dealing with an abnormally projecting caramel. The rocker shoe, where contact is made with the paper, is provided with a roller m<4>, Fig. 27, which during the folding movement winds up a spring m<20>. The wrapping-wheel then moves forward, and the second projecting end x<1>, Fig. 44, of the paper is folded down by passing under a spring-pressed shoe n integral with a leaf spring n<1>. The roller m<4>, Fig. 27, during this movement of the wrapping- wheel reverses its rotation under the action of the spring m<20> and holds the first fold until engaged by the second fold. The roller m<4> is then lifted clear of the wrapping-wheel. The caramel next comes beneath a pair of yieldinglymounted tucker blades o<2>, Fig. 5, which descend and form the end tucks x<2>, Fig. 46. During the retraction of the tucker blades, two revolving arms P<7>, one at each side of the wheel, engage the projecting ends of the paper and fold down a portion x<3> as shown in Fig. 47. The arms P<7> are so connected to their driving-mechanism as to be capable of yielding laterally. Further rotation of the wrapping-wheel carries the upstanding ends x<4>, Fig. 47, beneath a pair of spring-pressed side shoes, and the ends assume the form shown in Fig. 48. The caramel is then brought opposite to a discharge shoot R, Fig. 3, and the bottom of the pocket is raised to eject the caramel. As the caramel passes into the shoot, two blades s, resiliently mounted to accommodate imperfectly delivered caramels, swing simultaneously across the mouth of the shoot and fold down the last portions x<5>, Fig. 48, of the paper.