Patent ID: 8651114

Claim:
Assembly for opening cigarette wrappers in a machine for recovering tobacco from defective and/or substandard cigarettes, comprising: guiding grooves having a surface along which cigarettes are translated and a height sufficient to accommodate the cigarettes, wherein axes of the cigarettes lie on a first imaginary plane; at least one revolving disc knife mounted above each guiding groove so as to rotate about an axis of rotation, the axis of rotation lying on a second imaginary plane parallel to the first imaginary plane and the at least one revolving disc knife lying on a third imaginary plane perpendicular to the first and second imaginary planes, wherein the third imaginary plane of the at least one revolving disc knife is off-center of the guiding groove and is parallel to a fourth imaginary plane which is perpendicular to the first imaginary plane and passes through the axis of the cigarette in the guiding groove; and means for blocking rotation of the cigarettes around their axes in the guiding grooves comprising a sufficiently increased friction coefficient between the surface of the guiding grooves and the cigarette wrappers, the means for blocking rotation of the cigarettes around their axes in the guiding grooves generating torque whereby tensile stress is applied in the cigarette wrappers facilitating their opening.