Patent ID: 7963468

Claim:
A shredding machine for shredding sheet material, the machine comprising a feed-aperture and an electric cutting mechanism, the feed-aperture being configured to receive multiple sheets and direct said sheets in a feeding direction towards the cutting mechanism for shredding, the machine being characterized by the provision of a thickness detector which is moveable between a first position in which the thickness detector permits energization of the cutting mechanism and a second position in which the thickness detector prevents energization of the cutting mechanism, wherein part of the thickness detector extends into the feed-aperture, the thickness detector being configured such that said part will be engaged by sheet material inserted in the feeding direction into the feed-aperture prior to reaching the cutting mechanism, and moved from said first position to said second position as a result of said engagement, if the sheet material exceeds a predetermined thickness; further provided with maximum thickness indicating means to provide a visual indication to a user of the machine that energization of the cutting mechanism is prevented due to the sheet material moving said part of the thickness detector to said second position, wherein said thickness detector is provided in the form of an elongate arm mounted for pivotal movement between said first and second positions.