 This meant that the wheels were coupled, allowing better traction.A year later George Stephenson, another of Wylam's employees, improved on that design with "Blücher", which was the first locomotive to use flanged wheels to keep the locomotive on the track, and had cylinder rods directly connected to the wheels in the manner of "Catch me who can".In 1821 an Act of Parliament was passed for a tramway between Stockton and Darlington.