Abstract: A dispenser comprises a frame that supports a roll of adhesive tape, a handle, a flexible spatula for applying the cut end of the tape, and a cutting blade. The flexible spatula forms a right-angled member having a main arm and another arm which supports the cutting blade. The right-angled member is mounted so as to be rotatable between a rest position, in which the cutting blade is pressed by a spring against a protective member, and a working position, in which the cutting blade is lifted from the protective member so that serrations thereon intersect the path of the adhesive tape. This protective member has a face, on which the blade rests, and which ends in a projecting lip, forming a frontal protection for the serrations on the blade.

Abstract: A support device for a pressure roller, forming a lateral retainer and associated with the upper working head of a packaging machine, comprises a plate, essentially in the form of a circular sector, from which a support arm for the roller projects, the plate being mounted rotatable on a vertical pivot fixed to the machine working head assembly and cooperating with a position lock, the roller being carried at the end of said support arm by a vertical rotation pin.