Cross section through the traverser table, showing how one of the three rail roads (rail road X) could be moved sideways into a recess under the platform A. An electric motor B, underneath the traverser table moved along nine rails positioned transverse to the main tracks. Each rail had four wheels (of two foot diameter) positioned under the traverser table each supporting two rolled steel joists. The section shows the position of the future second platform on the left, while two other rail roads (in this case Z and Y) are aligned with the main tracks. Item B is the electric motor.