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A video of a shopping cart conveyor being used. When the user wishes to operate the device, they push the shopping cart through the device's safety doors. Guides in the floor then direct the shopping cart's wheels into the proper position. The device then senses the presence of the cart and transports it to the next store level. [1]
A bullock cart or ox cart (sometimes called a bullock carriage when carrying people in particular) is a two-wheeled or four-wheeled vehicle pulled by oxen. It is a means of transportation used since ancient times in many parts of the world. They are still used today where modern vehicles are too expensive or less suitable for the local ...
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 ...
The two wheels allowed the cart to be tilted to discharge its load more easily. [ 3 ] [ 2 ] Many tumbrels also had hinged tailboards for the same reason. The word is also used as a name for the cucking stool and for a type of balancing scale used in medieval times to check the weight of coins.
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The first simple two-wheel carts, apparently developed from travois, appear to have been used in Mesopotamia and northern Iran in about 3000 BC, and two-wheel chariots appeared in about 2800 BC. They were hauled by onagers. [7]
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