Apparatus for applying labels to objects having a helically grooved gluine roller

An apparatus for labelling objects, comprising at least one moveable gluing palette (7) adapted to coact with a rotary gluing roller (1) so as to be coated with glue and thereafter to transfer the glue to a label (17) received onto the glue on the palette from a label magazine (11) and then transported to a gripper (12) intended to grip the glue-coated label and to press the glue-coated label onto an object (15), wherein an outer cylindrical surface of the gluing roller is provided with mutually adjacent grooves (2) adapted to be kept filled with the glue;

• and at least an outer layer (10) of each said gluing palettes are slightly elastic so that when the palette is individually urged into contact with ridges (3) extending between the grooves on the gluing roller (1), parts of said outer layer will be pressed partially into the grooves so as to come into contact with the glue present in said grooves, and further comprising means for implementing a self-cleaning roller function, said implementing means comprising the roller grooves being helically configured, and a scraper (5) coacting with the roller and lying against the ridges extending between the grooves to keep the ridges free from the glue such that the scraper cooperates with the helical grooves to screw advance any label or other foreign object adhering to the gluing roller to one end of the roller.