GB168632A - Improvements relating to rotary folders - Google Patents

Abstract

168,632. Smith, E. W. May 6, 1920. Folding paper. - Rotary folders are provided with means for correcting the position of the fold by adjustment of the folding blade relatively to the cylinder carrying it while the cylinder is rotating. Several methods are described for carrying out the invention. As shown, the folding blade a, Fig. 3, is carried by a spindle a<1> rotatable in a bracket c the base of which is mounted in circumferential T-shaped slots in a segmental block b' fixed to the bottom of a groove b<1> in the cylinder. The ends p of the base are inclined to engage parallel inclined faces d<1> on bars d movable longitudinally, whereby the bracket c carrying the blade a is moved transversely to the axes of the cylinder. The protruding ends of the bars d may be connected by a rod e, Fig. 2, engaging a slot h<1> in a lever h pivoted at h<3> within a radial slot in the boss i of the driving-wheel and provided with a spherical end h<2> through which passes the reduced end of a screwed spindle g engaging a threaded bracket j<1> and mounted in a slot f<1> in the cylinder shaft f. Adjustment of the rod g in the slot f<1> while the cylinder is rotating oscillates the lever h, moves the bars d, and thus adjusts the blade a. In a modification, the bars d may be secured to a sleeve k, Fig. 4, mounted on the shaft f and secured by a cotter k<1>, passing through a diametrical slot f<2> in the shaft f, to a spindle l provided with a flange l<1> supported between ball bearings in a bracket m<1> adjustable by a screw m. The shaft l &c. may also be applied to the levers h, Fig. 2, in which case the end of the lever engages a diametrical slot in the shaft. The following modifications are also described, namely. (1) The brackets c may be mounted on screws rotated by racks and pinions from the bars d; (2) They may be adjusted by cams or eccentrics rotated by links or teeth by the bars d; (3) They may be pivotally mounted as by parallel links; (4) They may follow a tangential or other path determined by the surface on which they are mounted, or by means of slots.