GB393468A - Improvements in sheet feeding apparatus - Google Patents

Abstract

393,468. Printing &c. machines. WESTERLIN & CO., A. B., 1, Dammevagen, and DANIELSSON, Y. A. F., 4, Ovra Viktoriagatan, both in Gothenburg, Sweden. Oct. 18, 1932, No. 29101. [Class 100 (ii).] Tripping-arrangements.-In a printing or like machine the feeding mechanism or the press, or both, are rendered inoperative in the event of a multiple feed by mechanism which is controlled by the passage of the sheets between a feed roller 5 and a disc 19 which is normally set so that a sheet can pass between it and the roller 5 without rotation of the disc. The sheets are separated from a pile 2 by separators 3, and are carried to the cylinder 1 by a belt 8 passing over the roller 5. The disc 19 is mounted in an arm 14 carried by a sleeve which can be adjusted axially on a shaft 10, and the distance of the disc 19 from the roller 5 is controlled by means of a screw 16 which engages a projection 15 on an arm 22, Fig. 4, which supports a roller 26, Fig. 2, resting on the roller 5 outside of the path of the separated sheets. The arms 14, 22 are adjustable axially simultaneously. When more than a certain number of sheets pass over the roller 5, the disc 19 is moved frictionally by the sheets and a pin 41 on disc 19 moves a double forked lever 30, 31 in a clockwise direction, and a bar 9 carried by arms 9a is depressed and causes the operation of the stopping mechanism. The arm 14 is pressed towards the roller 5 by a spring 39 acting on a fixed bar 40 and a plunger-shaped casing 38 on an arm 36 fixed to the hub of the arm 14. The movement of the disc 19 is limited by the action of the pin 41 on abutments 42, 43, and the disc is formed with a flat portion 20 which permits withdrawal of the excessive sheets.