of grain from main outlet. Reciprocating sieve system consisted of replaceable set of sieve and screen mounted on oscillating frame. The throw of oscillations could be varied. Upper sieve separated chaff bigger than grain, while lower screen let the dust and particles smaller than grain pass through it, thus helped in delivering clean grain at main outlet. The thresher was provided with four wheels made of cast iron for transportation. The thresher was provided with stand to mount motor on to it. Such a thresher also had provision for attaching universal shaft for powered by tractor PTO and attachment for transportation on 3-point linkage of the tractor. This thresher is used for threshing approximately 300 kg of wheat per hour. This can be operated by 3.7 kW electric motor/ 5kW diesel engine or any tractor.