trolley wheel การใช้

Curiously, Philadelphia did not convert its trolley wheels on its remaining streetcars until 1978.
For this reason, the pole was tipped with a metal plate rather than a shoe or trolley wheel.
Although a streetcar with a trolley wheel may evoke an antique look, the trolley shoe is modern and more practical as well as economical.
In 2012, the museum adopted a cat, called Frank the Trolley Cat, after Frank J . Sprague, the inventor of the trolley wheel.
Doc Brown could disconnect a section of overhead wire from the system and connect it to the clock tower, and fit the pole on the DeLorean with a trolley wheel.