Patent ID: 8069764

Claim:
A shearing apparatus ( 10 ) for a sheet material unwound from reels, said apparatus comprising: a working table ( 14 ) on which an endless moving tape ( 16 ) is wound and over which said sheet material is cut by at least one shearing head, said working table being supported by a support frame ( 12 ); a first clamp for the temporary stabilization of said sheet material comprising a top bar ( 18 ) overlapping a bottom bar ( 20 ); and a second clamp upstream from said first clamp for advancing said sheet material and comprising a top bar ( 32 ) extending above the tape( 16 ) and cooperating with a plurality of undulying blocks ( 34 ) aligned in a crosswise direction which alternate with a plurality of laths ( 36 ) aligned in a longitudinal direction, said blocks ( 34 ) and laths ( 36 ) being arranged in a support tank ( 22 ) and forming a support frame for said moving tape ( 16 ), said first and second clamps being disposed along a least a crosswise extended zone of said sheet material arranged on the moving tape ( 16 ).