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Lawrence Ojok

Published on June 06, 2017

Ojok_Lawrence.jpgLawrence Ojok was among the top 25 innovators in the East Africa Postharvest Technology Competition 2017.

Technology : Bean Thresher

The Bean Thresher is a machine that threshes, winnows and grades legumes. The machine consists of a threshing rotor, tray, blower, a 5.5HP petrol engine and two wheels for mobility. It is operated by two people, one who feeds the hopper and the other who collects the filled container. The machine can produce up to 500kg of grains per hour.

Impact : Produced in 2014, it saves farmers from using the traditional stick for threshing; picking seeds, sweeping and wind winnowing. After the engine is hand cranked, the threshing rotor and the blower are powered simultaneously. By feeding the hopper with the harvest, threshing and winnowing happen at the same time. It was tested as a prototype during the July/2015 harvesting season and July/2016 on beans and pigeon peas. It yields 8kg of grains per minute; approximately 500 kg in one hour.