 Robey and Company of Lincoln were still offering portables for sale into the 1960s.The English builders produced in the order of 100,000 portable steam engines in the hundred year time period both for home use and export abroad.From about 1900 onward, the requirement for a small cheap source of power on farms was increasingly taken over by internal combustion engines, such as hit-and-miss engines and, later, stationary and portable industrial versions of car and truck engines, either for belt use or built into engine-generators.