Patent GB-128374-A (GB)
Title: Improvements in Wrapping Machines.
Inventor: PATIENT JAMES
IPC: B65B25/14
Filed: 1918-06-17
Abstract: 128,374. Patient, J. June 17, 1918. Pile tables; sheet carriers; sheet-separators. - A machine for enclosing unequally folded articles, such as sheets, booklets, &c., in wrappers, comprises the following devices for feeding the articles and wrappers. The wrappers 1 are transferred from a pile to grippers 18, 18<1>, Fig. 3, on a carriage 19, by means of an adhesive picker 8. The picker is mounted by means of a spindle 8' on levers 13, the spindle being provided with an arm 15 having a pin 15<1>, engaging a cam-slot 16<1> in a bracket 16. The levers 13 are secured to a shaft 14, connected to a link 26 which is operated by a cam on the driving-shaft 17. Thepicker receives paste from a frame 7 which is arranged in a paste receptacle 5 and is carried by levers 10, constrained by links 12, 12<1>. The frame 7 is lifted by the engagement of the spindle 8<1> with the curved end of one of the levers 10. In operation, the picker moves into the horizontal position above the frame 7 which then rises to transfer paste to the picker. The picker then descends on to the top wrapper and transfers paste to the margins, the wrapper being lifted to the position shown when the picker rises, A spring and a lost-motion connexion are provided for causing the picker to dwell on the wrapper and then rise suddenly. Means, such as leaf springs, engage the top wrapper to prevent more than one wrapper from being transferred. The wrappers are supported by a table 3, raised by a screw 62, Fig. 7, which engages a half-nut 65 on a frame 2 of the table and is rotated by ratchet-mechanism which is operated intermittingly, preferably by means in connexion with the link 26 for, operating the picker 8. The pawl of the ratchet-mechanism is periodically disengaged by known means controlled by the height of the pile of wrappers. The half-nut 65 is carried by a hand-lever 64 and can be released by pressing the hand-lever. The gripper consists of two pairs of fingers 18, 18<1>, secured to shafts 29, 29<1>, which are mounted on the carriage 19 and are geared together by pinions or friction-disks 30, the shaft 29 having a spring for pressing the grippers together. The carriage is provided with racks 20. gearing with pinions 21 on a shaft, which is geared to a reciprocating rack 23, driven from the shaft 17. When the carriage moves to the position shown, a reciprocating rod 34 rocks an arm 32 on the shaft 29<1> and the fingers are opened to receive the wrapper, the fingers closing to grip the wrapper when the rod descends. The carriage then moves to the right and carries the wrapper on to a slotted table 36, the fingers being opened to release the wrapper by the engagement of an arm 39 on the shaft 29<1> with an adjustable stop 40. The sheets 12 are stacked in a box 44 and pressed by a gravity follower 46, supported by a roller 47. The bottom sheet is withdrawn by a reciprocating blade 48, adapted to enter the fold, and is then pushed with the wrapper 1 through the slot in the table 36 and into the grip of rotating rollers 37, 38 which fold the wrapper and press together the gummed parts. To prevent the blade from withdrawing more than one sheet, the box 44 is provided with a brush or wiper 60. The blade 48 is secured to a bracket on a rod 59 which passes through a guide 59<1> and is connected by a link 56 to a disk-crank 57.