Shelling is the process of separating maize kernels from the cob, and it can be performed manually or mechanically. The Melkassa-developed maize sheller is one of the mechanical types. It has high shelling performance, and it needs a high feed rate. Manual feeding of biomass was involved with high drudgery and consumption of time and energy. The objective of this study was the development of a conveyor feed for a Sheller to mitigate human drudgery and improve shelling performance. After development evaluation was conducted on Melkassa II after measuring engineering properties of mean head, intermediate, and tail diameters, 32 cm, 48 cm, and 25 cm were recorded, respectively. The study evaluated three levels of feed rates of 7000, 8000, and 9000 kg/h and speeds of 550, 650, and 750 rpm at 13 percent moisture content. As for the results, the conveyor feeding had a significant effect on shelling capacity (p < 0.05). The maximum shelling capacity is 7504.8 kg/h at an amount of biomass of 9000 kg/h and sheller speed of 750 rpm, and the minimum was recorded at 6140.9 kg/h feed rate with a 550 drum speed at 7000 kg/h. At a feed rate of 7000 kg/h) and speed 750 rpm the maximum seed breakage was 0.0174 percent, and the minimum was 0.0114 percent at speed 550 rpm and feed rate 9000 kg. The suggested adoption of a conveyor for the sheller improves shelling performance, ensures uniform feeding, minimizes drudgery, ensures a safe shelling operation, and enhances maize productivity.