Hand Operated Water Lifting Device  by Shri N. Shakthimainthan    Background of innovation This idea evolved while washing the farm implements in the stagnant water. He refined the idea to effectively drain the stagnant water from fields, ponds and canals. The initial concept was developed using wood, rotator and cycle chain. Salient Features  • It consists of 2 pairs of chain and sprocket (gear ratio 1:2), impeller pump and pipes. • Discharge, irrigation capacity and delivery head of this device are believed to be 20-22,000 l/h, 0.03 ha/h and 0.5 m, respectively. • One person is required at a time. • Cost of the device is Rs. 1200/-. • The device has high discharge at low-cost. Video