Universal Nut Sheller
Jock Brandis & Wes Perry - Full Belly Project
Universal Nut Sheller (previously called the Malian Peanut Sheller): An open source multi-nut manual sheller that comes with construction components and an instruction manual for further local production after the first sale.
Currently in 41 countries, with emphasis on developing nations.
The Full Belly Project (they request the consumer to contact them with questions on how to obtain equipment)
• Sources referenced indicate a cost of $50 – $75 USD for a construction kit.
• Appropedia has instructions for constructing the device that cost approximately $115 USD per unit. Considering this takes into account domestic costs of materials it is a high estimate.
• The Full Belly Project sells construction kits at a cost of $700, that is designed for the manufacture of 4 units. Their target consumer at this price range are usually NGOs that then deploy them in partnering countries. Costs vary from country to country and will average between $30-50 for cement and steel in developing countries. Interview with representative
Numerous adaptations of the Universal Nut Sheller since it is an open source technology, Bambara groundnut sheller, Rubber Tire Sheller from Thailand, Alvan Blanch GS100, Pearman Corporation (Chula, GA, USA) hand powered machine, Tan-Tan Ground Nut Sheller
Goal 8:promote sustainable economic growth and productive employment.
Women and children in developing nations that typically spend hours shelling nuts by hand.
Mass produced by manufacturers that end-users partner with, or individually produced with the instructions/kits provided by The Full Belly Project Interview with representative
Details of design, construction and training along with basic materials can be purchased from The Full Belly Project. Interview with representative
“A Seed Project Contribution: $700 USD -consists of a set of molds and the necessary metal pieces to build four machines. Once the set of fiberglass molds has been acquired, an unlimited number of machines can be made with metal fabricated locally.”
Capacity of sheller, measured in kilograms per hour
Is the sheller manually operated or is it motorized?
Size of holes on the sieves, measured in millimeters
Rate of efficiency of the sheller
The material used in construction
List of crops that this technology shells
Overall percentage of nuts broken
The Universal Nut Sheller is a low cost adjustable nut sheller made of concrete and steel, materials that are cheap and locally available. The device is hand cranked and adjustable for use with several different types of nuts. While originally developed for peanuts it is often used for the production of biofuels.
See image below.
Customers can receive support by contacting The Full Belly Project. Interview with representative
Customer is responsible for creating replacement components using the construction kit supplied by The Full Belly Project or use the instructions found in online manuals. The customer can also build a relationship with a local manufacturer who they can contact to replace components. Interview with representative
The device is expected to last 20-25 years after which it should be dismantled and parts can be recycled Interview with representative
Shells peanuts at a rate of 50 kg/hr
Adjustable for any size of nut via metering plates. Because of their softer shell, aflatoxin contaminated peanuts tend to pass through unshelled for easy sorting.
Manufacturing location. Customers are responsible for communicating with independent manufacturer to ensure that the product meets their standards Interview with representative
Care must be taken to inform users of the dangers of cross-contamination between peanuts and biofuels. Since customers are capable of adapting the design, danger occurs if local materials are mixed with the concrete since it will make them weaker Interview with representative
Customers will sometime adapt the designs of the product to accomodate electric and petal power to increase production capacity. Interview with representative
Full belly project developed Pedal Powered Agricultural Center (PPAC), which it adds on to the Universal Nut Sheller (UNS) by making it pedal powered, increasing the amount of peanuts that can be shelled from 50 to 90 kg/hr.
Atiku, A. A., Aviara, N. A., Haque, M. A., Performance evaluation of a bambara ground nut sheller. Agricultural Engineering International: the CIGR Journal of Scientific Research and Development. 2004 Jul;6:1-18
Raghtata, A. S., Handa, C. C., Design and fabrication of groundnut sheller machine. IJIRST. 2014 Dec;1(7):38-45
Fellows, P., Technical reports: setting up a food-processing unit part 3: materials for construction and equipment. Food Chain. 2014 Jun 18;3(1-2):unknown.
• MIT Ideas Award: $5000 to adapt UNS to make a pedal powered machine.
• Popular Mechanics Magazine: Breakthrough Award Given for the UNS.
• Carolina Challenge: Business Plan for setting up local entrepreneurs in Uganda.
• CNN Heroes: For FBP’s establishing economic opportunities in developing countries.
• Tech Awards Laureate: For Technology benefiting humanity.
• Purpose Prize: $100,000 for extraordinary contributions in encore career.
• BBC World Challenge – 2010 Finalist
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