Machine for continuously and uniformly coating confectionery products

DETAILED DESCRIPTION What is claimed is: 1.
A machine for continuously and uniformly coating confectionery products comprising solid gelatinous or pasty cores, with liquid and/or powdery products, of the type comprising a substantially horizontal fixed trough provided with lateral walls, an endless screw which is driven in rotation in this trough, and means for introducing said cores and for pouring said liquid and/or powdery products into said trough, wherein said machine comprises at least one helicoidal brush composed of bristles implanted radially and helically on at least one drive shaft which is driven in rotation in said trough at a speed of less than 100 rpm and said trough is upwardly open, has a height greater than the diameter of said brush and has a cylindrical bottom which envelops said brush in an area located beneath said drive shaft.
2.
The machine of claim 1, comprising two helicoidal brushes of the same diameter composed of bristles implanted radially and helically on two parallel drive shafts which are driven in rotation in opposte directions and such that the bristles of the two brushes move upwardly in a central portion of the trough.
3.
The machine of claim 2, wherein the two brushes have pitches of the same direction and a product obtained by multiplying the pitch by the speed of rotation of one brush is greater than a product obtained by multiplying the pitch by the speed of rotation of the other brush.
4.
The machine of claim 2, wherein the cylindrical bottom of said trough is composed of two semi-cylindrical joined portions each of which envelops a portion of a brush and which forms in a central portion a rib in relief which engages between the two brushes.
5.
The machine of claim 2, wherein at least one of the lateral walls of said trough which is swept by the brush bristles in the descending direction has a cylindrical form which extends the cylindrical bottom of said trough and which envelops at least one of said brushes in the part lying above the drive shafts