The first tricycle that I have found with the two wheels in front and the larger wheel in back (the tadpole configuration) was patented in England before 1876, and sold as by the Rudge company. The seat was like a carriage seat, with coil springs to absorb shocks. The large rear wheel was the drive wheel, and the front wheels were for steering. This model is propelled by levers and cranks, but this mode was later replaced by the chain and crank. Between 1880 and 1890, this form of bike was one of the most popular cycles in England, being even more popular than two wheelers.