SHEARS FOR CUTTING SHEET MATERIAL Russian patent published in 1997 - IPC

FIELD: mechanical engineering. SUBSTANCE: shears have base with lower blade secured in it, turning bar with clamp, blade bar with upper blade secured in it, power-operated eccentric shaft and connecting rod. Shears are provided with unequal-arm balance beam and additional connecting rod. End of large arm protrudes beyond limits of clamp. End of small arm is located between blade bar and axle of turning bar. Additional connecting rod is pivotally connected with clamp and with end of large arm of balance beam and for transmitting motion to blade bar it is pivotally connected with blade bar and with end of small arm of balance beam. EFFECT: high efficiency. 1 dwg