Overhead boom arrangement for a packaging machine

An overhead boom arrangement for use in a packaging machine comprising a moveable support structure, a bracket vertically adjustable with respect to said support structure, a plurality of endless belts carried on said support structure, each endless belt being driven around a set of rollers mounted on the support structure and having an active portion of its path during which each of said belts engages a series of products as the products move through the packaging machine, at least one of said belts being carried on said bracket so as to be vertically adjustable relative to said support structure and other belts, carried on said support structure, which other belts are substantially vertically fixed with respect to said one belt, such that said active portion of said path of said one belt is movable upwards and downwards relative to said support structure, and wherein said active portions of said belts extend parallel to each other and in use run at a speed approximately equal to the products moving through the packaging machine.