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2. Train wheel - Wikipedia

   en.wikipedia.org/wiki/Train_wheel

   A train wheel or rail wheel is a type of wheel specially designed for use on railway tracks. The wheel acts as a rolling component, typically press fitted onto an axle and mounted directly on a railway carriage or locomotive , or indirectly on a bogie (in the UK), also called a truck (in North America).

3. Wheelwright - Wikipedia

   en.wikipedia.org/wiki/Wheelwright

   In a wooden-spoked wheel, the nave acts as the hub. One end of each spoke is set into the nave in a process called tennoning. In older wheels, the nave had a 6-inch sleeve that fit over the axle to keep the wheel from wobbling; it required frequent greasing. More modern carriage wheels use bearings. [4]: 197 [3]: 232

4. Bogie exchange - Wikipedia

   en.wikipedia.org/wiki/Bogie_exchange

   The two wheel sets on four-wheel wagons can be changed as well if the wagon has been designed accordingly. The Nutter hoist, patented in 1871, used screw jacks to lift cars off of their bogies. [ 1 ] The Imboden railway-car lifter, from 1875, used a steam cylinder to wedge the car into the air.

5. History of the railway track - Wikipedia

   en.wikipedia.org/wiki/History_of_the_railway_track

   The wagons were guided by the pronounced flange on the wooden wheels, and the narrow gauge of 480 mm (18 + 7 ⁄ 8 in) allowed the points to be altered by swinging the single switch rail. [1] Contemporary illustration of guided truck used in 16th-century mines in Germany Reconstruction of flat wooden track for transporting silver ore; guidance ...

6. MBTA CAF USA Type 10 - Wikipedia

   en.wikipedia.org/wiki/MBTA_CAF_USA_Type_10

   The Type 10 LRV is a future class of low-floor light rail vehicles, to be manufactured by Construcciones y Auxiliar de Ferrocarriles (CAF) for the MBTA Green Line in Greater Boston, Massachusetts. The Type 10 cars are 54% longer than the existing rolling stock of the Green Line, and will be equipped with new safety and accessibility features.

7. Shopping cart - Wikipedia

   en.wikipedia.org/wiki/Shopping_cart

   A shopping cart held by a woman, containing bags and food. A shopping cart (American English), trolley (British English, Australian English), or buggy (Southern American English, Appalachian English), also known by a variety of other names, is a wheeled cart supplied by a shop or store, especially supermarkets, for use by customers inside the premises for transport of merchandise as they move ...