| 摘要 |
<p>A cut-off mechanism for a cigarette or other similar continuous rod making machine comprises a rotating helical knife and a sharpening device for sharpening the knife, characterized in that the sharpening device comprises two rotary sharpening members arranged to act on opposite sides of the knife, the sharpening members both being carried by a rotary member which rotates about an axis substantially parallel to the axes of rotation of the sharpening members, and each sharpening member being adjustable in regard to its distance from the axis of the rotary member, at least one of the sharpening members being driven by engagement of a rim on the sharpening member with an intermediate wheel which also engages a stationary ring which is coaxial with the rotary member.</p> |
