| 摘要 |
A toy railroad track which is adapted to guide the movements of a toy vehicle has at the bottom of the track two control plates which are attached to a fixed plate. A rack plate is engaged with a pinion mounted at the free end of the shaft of a small motor. Upon the pinion being driven by the small motor, the rack plate can be driven to move laterally; simultaneously, the rack plate will actuate the two control plates to move, and then the flanges of the control plates will extend out of the rail grooves to close one path and open the for the running toy.
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