Apparatus for supplying sheets of card-board, mill-board and the like to the receiving tables of box making and like machines

摘要

161,430. Ritchie & Son, Ltd., A., and Cullen, J. March 23, 1920. Pile tables and supports for sheet feeds.-Piles of sheets of cardboard, millboard, &c. are fed to the pile tables of box-making, printing, and like machines, by means comprising an elevator which is driven by a clutch adapted to be thrown out automatically when the pile has been raised to the required level. As shown, a pile of sheets mounted on a support is moved from ground level over rollers 3 on a platform 2 of a cage 7 which moves over vertical guides 1 and is fitted with counterweighted cords 6', and a raising-cord 6 actuated by a drum 5 which is driven from a motor 18 by mechanism comprising a dog clutch 19 and sprocket gearing 14, 15, 16. The drum 5 is fitted with a pawl and ratchet for retaining the elevator in its raised position, and the pawl can be operated by link, and lever mechanism to permit the cage 7 to descend. When a pile of sheets is placed in the cage 7, a lever 20 is actuated to throw in the clutch 19, and a detent 22 engaging a bracket 23 holds the clutch in operation against the action of a spring 21 until the detent is actuated by a rod 24 and a follower 25 which is engaged by the cage when it has attained the desired level. The clutch is thus operated to throw out the winding device, and the cage stops at such a level that the pile of sheets can be moved over a roller 26 to be dealt with by further mechanism as described in Specification 162,887.