On a plain road, only one battery would work and when climbing the second battery will also come into action. Libbey invented an electric bicycle with two motors, two batteries and two wheels. Today, it is vastly used in the electric bicycle industry and it is one of the best way to propel the electric bicycle. ![]() Over the years it has almost forgotten but it came back big time in the last decade. This is amazing that the hub motor was invented 120 years ago. Mr Bolton wrote that his invention includes: "6-pole brush-and-commutator direct current (DC) hub motor mounted in the rear wheel.” Here is a link to the original patent: 552271. ![]() He introduced an improvement for the electric bicycle but he didn't mention any earlier invention so we know that he is not the first one but I didn't find any patent related to electric bicycle that issued before.
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