Patent GB-190414575-A (GB)
Title: Improvements in or relating to Machines for Wrapping up Chocolate Tablets or similar Goods.
Inventor: BOULT ALFRED JULIUS
Filed: 1904-06-28
Granted: 1905-06-28
Abstract: 14,575. Boult, A. J., [Soc. Savy, Jeanjean, & Cie.]. June 28 Parcelling chocolate tablets &c.-In a machine for wrapping-up chocolate tablets and the like, an oscillating carriage first picks up a tin-foil or other wrapper and transfers it to the wrapping- mechanism ; the carriage then receives a tablet from a magazine and, during its return movement, deposits the tablet upon the wrapper. The wrapper is closed around the tablet by sliding and hinged folders. The tablet is discharged from the machine by causing the table on which it rests to lower and tilt, thereby throwing the tablet into the discharge shoot. As the carriage a, Fig. 2, which slides on a fixed tablet and is reciprocated by a crank on the shaft 7, rears its extreme left position, the spring-pressed pins 39, supported on the carriage a, cause a partial rotation of a pair of discs 36 carrying rollers 37. One of the wrappers is thus drawn from the pivoted tray 33, resting on the spring 34, and is fed between the grippers 16, 17. The gripper 17 has an elastic pad and is lifted, against the action of the spring 20, by a fixed pin which, as the carriage a moves, causes partial rotation of the spindle 21 and thus also of the spindle 22<a>. As the carriage a moves to the right, the gripper 17 again descends, and the wrapper is carried forwards until the piece 18 strikes the piece 92, thereby releasing the wrapper and allowing it to fall on the plate 47. When the carriage is in its extreme-left position, the table 89 is raised by the cam 86, and the pawl shown is thus pressed back against the action of the spring 91. The tablets are thereby released, and, as they descend with the tablet 89, the carriage a moves to the right, leaving one only of the tablets on the table 89, as shown in Fig. 5. When the carriage reaches its extreme-right position, the table 89 again rises and presses the tablet between the pieces 18, 19, in which, position it is retained until it comes over the table 47. The spindle 22<a> is then partially rotated, as previously mentioned, and the tablet falls on the wrapper covering the table 47. The levers 60, 65<a>, operated by toothed segments driven by cams on the shaft 7, now close in, as shown in Fig. 5, and cause the pieces 62, 69, which are connected to slides 61, 68 by springs 63, 63<a>, to fold over two sides of the wrapper. The two remaining sides of the wrapper are folded over by two hinged plates, carrying pinions driven by two racks 79, which are reciprocated by levers 78 driven from the shaft 7. During their descent, the hinged folders slightly raise the piece 69 to avoid friction between this piece and the wrapper and the consequent spoiling of the wrapper. As the table 47 is lowered by the cam 43<b>, it is tilted by the piece 49, thereby throwing the tablet into the discharge shoot 50. To prevent the folds in the wrapper from rising when they have once been made, a bar 70, connected to a rod 71, is loosely supported on the piece 69. After the second fold has been made in the wrapper by means of the piece 69, the bar 70 strikes against fixed stops which cause it to remain resting on the partlyfolded wrapper. The bar 70 is restored to its original position by the piece 72 on the carriage a engaging with the finger 72<a>.