Patent ID: 8146333

Claim:
A device for placing sleeves on traveling articles, said sleeves being cut from a continuous sheath passing over a sheath-opening shaper up to and beyond cutter means, the shaper having a central axis, and being held floating between first outer wheels and backing wheels of parallel axes carried by said shaper, second outer wheels being provided downstream from the cutter means to eject each cut-off segment of sheath onto an article located vertically under the shaper as a result of said article moving past a cell, the cutter means including at least one blade mounted on a support that is arranged to rotate around the shaper, the or each blade being capable of pivoting on said rotary support and remaining in a plane that is essentially perpendicular to the axis of the shaper, facing a groove in said shaper, and alternating between a retracted position and a cutting position in which it penetrates in part into said groove of the shaper, wherein the alternating pivoting of the or each blade between its retracted position and its cutting position is ensured by means of a difference in rotation between two superposed rotary rings of a cam system constituting the support for said blade, one of the two superposed rotary rings presenting a cam path parallel to a cutting plane and of oblique direction, in which there slides a cam that is constrained in rotation with a blade-carrier via a pin parallel to a common axis of the two superposed rotary rings and pivotally mounted on the other of the two superposed rotary rings, and wherein the or each blade presents a free end that is arranged to pierce the wall of the sheath and to cut said wall while exerting a force thereon that is directed radially outwards.