LOCKWOOD®. We Know Potatoes™. For over 80 years, LOCKWOOD® has been one of the leading manufacturers of high quality, reliable potato equipment. LOCKWOOD proudly builds a variety of potato planters, handling equipment, windrowers and harvesters. Maximize your operation's efficiency with equipment options and features to accommodate your farm's specific needs! OUR MISSION: At LOCKWOOD, we strengthen the profitability of the potato customer through innovative solutions and service excellence.