Abstract: The invention relates to a device for the automatic selection of rolls of tape, particularly adhesive tapes, which are used in dispensers. The inventive device ensures that a dispenser uses certain types of tape rolls selectively by preventing unsuitable rolls from being placed correctly therein or from rotating. According to the invention, lugs (62) which surround the mandrel (63) of the dispenser only allow a tape core having a corresponding annular groove on one of the sides thereof to be positioned correctly in the dispenser and to rotate.

Abstract: A tape dispensing box having a parallelepipedic form including first and second main faces, an output slot for the tape with a tape cutter, a removable holding device with a support for a reel of tape and a sheet of paper having information thereon held between a main face and the holding device when the holding device is inserted into the box.

Abstract: A device for correcting the combustion of internal combustion engines, in particular automobile engines, the internal combustion engine having an intake manifold, the device including a first sealed chamber directly connected to the intake manifold, a second sealed chamber separated from the first chamber by a diaphragm having a neutral position, the second chamber being connected to the first chamber through a passage for delaying transmission of pressure variations from the first chamber to the second chamber, a control device for reducing the fuel to air ratio of the air and fuel mixture, the control device being coupled to the diaphragm for activation by the diaphragm whenever the differential pressure between the first and second chambers exceed a first predetermined value and whenever the differential pressure exceeds a second predetermined value.