shuttle train

[Super]

It looks familiar but I might be confusing it with something else. Can't tell much from the small Thumbnail images...is it branded Tomy or Plarail? Can you read what its called? Have any luck searching for a video as it would be interesting to see it in action. Looking i the box there must be 2 different loads, balls and logs, and 2 different transport cars. It also looks like the train shuts off automatically when it reaches the top to dump its load but how does it return...manually? There also must be a center gear under the engine to engage ii that turntable. Interesting vintage looking set.