From the book The Great Kettles: A Tale of Time page 6.

Joey built the Time Coaster, a time machine, from schematic drawings by Professor Throttleman which Joey found in the attic of his new house. After he assembled the time machine, Joey climbed into the seat and pulled a lever. The light atop the wings blinked on and the umbrella began to twirl. Then, the whole machine shook and lifted off the floor - and began to shrink! - Dean Morrissey