Toy train has no wheels and is pushed by hand along track assembled from lockable pieces with specially shaped dovetail joints

摘要

The train is without wheels and is pushed along by hand. A specially shaped dovetail joint with two 180 degrees. S-bends is used to join the track pieces together, minimizing play in the length direction of the track. The track pieces can be locked together so that a good join is maintained even on an uneven floor.