Abstract: An impregnating machine (1, 28) for surface impregnating hides (2) or similar products wherein an endless conveyor belt (3), with a transportation branch (5) traveling in a given direction (6), and a conveyor (16), presenting a number of endless belts (17), define a feed channel (19) for the hides (2); the feed channel (19) extending substantially up to a narrow passage (13) for the conveyor belt (3) and the hides (2); and the passage (13) being defined between an impregnating roller (11) and a deflecting member (7) facing the impregnating roller (11) and such as to impart to the transportation branch (5) of the conveyor belt (3) a radius of curvature (R1) equal to a relatively small fraction of the radius (R2) of the impregnating roller (11).

Abstract: A roller press for surface impregnating leather and similar materials, includes a load-bearing structure (2) which supports an upper impregnating roller (8), a lower drive roller (9), and a pair of conveyor belts (5 and 6) placed one above the other which turn in the same direction and partly touch each other so as to forward feed the leather (P) to be impregnated. The rollers are approximately parallel to each other and spaced apart so as to create a converging/diverging channel (10) between them, having the minimum section (11) approximately equal in height to the thickness of the leather being worked. There is a pressing member (20) arranged immediately upstream of the minimum section (11) which acts flexibly and uniformly over the entire width of the leather so as to keep it in stable contact with the lower drive roller (9) and preventing it from rolling up.