GB170086A - Improvements in or connected with paper bag making machines - Google Patents

Abstract

170,086. Collis, A. July 9, 1920. Paper bags, making.-A paper bag making machine is provided with a knocker-up or ejector which is moved in one direction, when a predetermined number of bags have accumulated in a pile on the delivery table, to push the pile off the table, and on its reverse movement is lifted to clear the bags which are being delivered to the table. The device, as shown in crosssection in Fig. 2, comprises a delivery table D to which the bags are fed by a drying and pressing cylinder, the bags accumulating in a pile against a back lay F and side lays E, the latter being pivoted and counterweighted to allow them to swing downwards when a pile of bags is pushed towards the right. The eyeleting- device consists of pins R carried by levers Q which are pivoted at the top of a bar J, the short arm S extending from the levers Q being pivoted to a bar T. The bar J is hinged at its lower end to the frame, and the bar T is formed with a slot U which rides in a shaft V, cams W and X actuating the bars J and T respectively. When a predetermined number of bags have accumulated the fingers R are dropped on to and are drawn towards the right by a spring b thus pushing the pile of bags over the lays E into position to be taken up by the operator. The pins are then raised and moved back towards the left, their raised position permitting them to clear the bags which are accumulating in a new pile on the delivery board D.