GB255189A - A new or improved machine for removing fluff and dust from printing paper and the like - Google Patents

Abstract

255,189. Linotype & Machinery, Ltd., and Stern, C. L. May 19, 1925. Dust, fluff, and the like, collecting.-A machine for removing fluff and dust from printing paper and the like comprises a pair of feed rollers 6a, 8 to which the paper is supplied, pairs of rotary brushes 21, 22 between which the paper is passed, a suction chamber 2 which is connected to a suction pump through pipes 63 and contains the brushes, and delivery rollers 16a, 18 for delivering the paper from the chamber. As shown, the paper is in the form of sheets fed from a pile 4 and finally deposited on a delivery table by means of a delivery carriage 19 reciprocated from a crank 62 through lever-and-link mechanism. Pairs of feed rollers 13, 13<a>, tapes 14, 20. and guides 60 feed and guide the sheets through the chamber 2. The rollers 8 are mounted on swing- ing arms 35 oscillated by cam-actuated links 38, 39 to allow a sheet to be moved up to cam-controlled stops 47. A table 61 supports the sheets up to the first pair of rollers 13, 13a. The brushes are carried by swinging arms 23, 23a, the arms 23 for each upper brush 21 being fixed on a rod 24 oscillated through links 26, 27 by one of a set of cams 31 fixed on a shaft 32 and arranged so that the brushes 21 are lowered in succession on to the sheets. The lower brushes 22 are moved in unison with the brushes 21, their arms 23<a> being actuated from the arms 23 by gear sectors 25. The first three pairs of brushes are rotated so as to oppose the movement of the sheets, the dusting of the leading edges being performed by the last pair which rotate in the reverse direction. Each brush is made up of coaxial sections, the sections of the various brushes being arranged in staggered relationship so that the whole surface of a sheet is dusted. An additional pair of brushes may be provided arranged to the left of the last pair and with its sections staggered with respect thereto so as to complete the dusting of the leading edges of the sheets. To exclude dust from the chamber 2, flaps are provided where the sheets enter and leave.