GB154921A - Improvements relating to automatic paper feeding machines and the like - Google Patents

Abstract

154,921. Heyne, C. O. Dec. 4, 1919, [Convention date]. Stopping arrangements.-In a sheetfeeding device for printing - presses or tbe like, of the kind in which sheets are forwarded from a fanned-out pile by rollers as 1, 2, the fanned-out pile is supported on a table consisting of a grid of bars 4, and the pile is advanced intermittently bv a second grid, the bars E of which are raised, moved towards the feed rollers, then depressed and returned to normal position, the movements of the second grid being controlled by a feeler device which is inactive when the sheets are in a position to permit the feeding devices to act on the sheets. As shown in Figs. 1 and 2, the fecler consists of a lever M, which is mounted on a shaft N fitted with an arm M<1> with a roller 5 in contact with a cam L. When there is no sheet to prevent the upward movement of the lever M, this lever moves upwards when the cam L permits the roller 5 on the lever M<1> to drop into the cam recess. This movement of the lever M<1> causes a thrust pin P to actuate a latch Qu to connect a reciprocating rod T to a segment u which is thus oscillated by the rod T. The segment u gears with a shaft w fitted with a number of segments, each segment being connected by two bands y to a bar E of the movable grid. The bars E are thus advanced towards the pile by the segment u, and return by a spring z, the bars E being raised as they move forwards bv rollers D on arms C, C', mounted on shafts A, B, connected bv a rod G and lever arms F. The shaft A is oscillated by a, second cam on the shaft of the cam L, and a lever arm K. As soon as the sheets pass beyond the feeler M, the latch Qu is unlatched, and the means for advancing the bars E is thrown out of action.