I am being a Mechanical Engineer with about 30 Yrs experience in DESIGN & MANUFACTURING of various machine tools which includes CNC SPMs working with a reputed public sector company, I can help you out in your requirements. Kindly correspond to wealthil@gmail.com
If you are looking for something low-tech that can be used to shell cashews for a small village co-op, that does not require electricity to run or make, try Universal Nut Sheller.