Gears 5 and 6 rotate about fixed axes A and B. Rolls 1 and 2 rotate in opposite directions and advance the sheet material to be sheared to fixed blade 3. Top blade 4 is mounted on shaft B which is driven by shaft A through meshing gears 5 and 6. When top blade 4 descends, the sheet stock is sheared. Roll 1 has a pressure device 7.
$2391$SG,SF$