The Jatropha fruit decorticator was designed and developed (Fig. 1). Its components include the frame, feed hopper, fruit decorticating chamber, concave sieve, rotating blades, discharge outlet and a vibrating separator with sieve to separate seed and shell. The machine was conceived as a low-cost, easy-to-adjust, easy to dismantle and easy to fabricate device for removing the shell from the Jatropha fruits. The conical shaped hopper is mounted on the frame and held in place by a hopper support frame. The decorticating chamber consists of a semi-circular concave sieve having hexagonal perforations (15 25 mm) and rotating blades mounted on shaft. Decortications of fruit may be achieved using one of several methods: impact, rubbing, squeezing or a combination of the three. In these three, the rubbing action would produce seed with minimal damage. To achieve minimal seed damage it is essential to apply least impact with rubbing action. The decorticating chamber was designed in such a way that it produced more rubbing action. The discharge outlet is the point where the seeds and shells from the decorticating chamber are collected and move to the vibrating separator. The separator consisted two layers of sieves having oblong opening (12 19 mm and 6 9 mm) to separate seeds and shells. The frame is the mounting support for all the components of the machine.