GB191405873A - Improvements in Chain Polishing Machines. - Google Patents

Abstract

5873. Czerny, V. March 21, 1913, [Convention date]. Brushing and cleaning chains. - Chains to be cleaned are wound on a rotating drum which is guided past a rotating disk -brush and can be rotated about an axis at right-angles to the axis of the brush. The framework p carrying the drum a moves in a guide q which is pivotally mounted on and secured to the carriage n by a bolt r. The axis of the bolt r is at right-angles to the shaft v on which the brush o is mounted, so that by moving the drum about the bolt r it is possible to clean the lateral parts of the chain. An axially indisplaceable threaded spindle t is mounted in the frame p and is engaged by a nut h fixed to the guide q. The spindle t is connected by gearing to the spindle b of the drum a, which is driven through worm gearing s by a flexible shaft u operated by the shaft v. The movement of the frame p is reversed automatically at the end of its travel by changing the gearing between the spindles b, t from a single gear 7 to a double gear 8, 9, and vice versa. The gears 7 and 8, 9 are mounted on a square pin k provided with a notch 15 which is engaged by a pivoted lever z rocked in the known manner by tappets g on the guide q. In order to retain the lever z in both operative positions, it is formed with a projection 20, Fig. 5, which in both operative positions drops into slots 21 in a resilient plate 22, from which it is released by the tappets g bearing against the inclined end faces of the plate 22 just before they reach the lever z. The machine is preferably made with two drums a and brushes o, and is symmetrically arranged on each side of the line x-x, Fig. 2. The carriage n is adjusted by a threaded spindle 3.