SHEARS FOR CUTTING SHEET METAL Russian patent published in 1994 - IPC

FIELD: metal working. SUBSTANCE: machine has table 1 carrying blade 2. Secured to lower part of table 1 are bearings 3 with crank shaft 4 journaled therein. Mounted on shaft 4 is beam 5 having port 6 for receiving sheet 7 to be cut. Beam 5 carries arcuate blade 8. Lower beam is secured in guide of table 1 and pivotally connected to table 1 by lever 10. Shaft 4 is connected through coupling to reduction gear, which is in turn connected to electric motor. EFFECT: enhanced efficiency of shearing. 4 dwg