BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described, purely by way of non-limiting example, with reference to the annexed plate of drawings, in which:
FIG. 1 represents a working diagram of the supply device according to the invention;
FIG. 2 is a schematic detailed view of the supply device of FIG. 1; and
FIG. 3 is a schematic view of a preferred embodiment of the supply device according to the invention.