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2. Chinese siege weapons - Wikipedia

   en.wikipedia.org/wiki/Chinese_siege_weapons

   A fork cart A hungry falcon cart. Hook carts such as the fork and falcon carts were used to pull down parapets and the top part of walls to make it easier for ladders to access. Once attached, 50 to 100 men took hold of a rope and pulled until the wall came down. They were used as early as the Three Kingdoms period, as mentioned by Chen Lin:

3. Shopping cart conveyor - Wikipedia

   en.wikipedia.org/wiki/Shopping_cart_conveyor

   A Shopping Cart Conveyor also known as Vermaport, Cartveyor or shopping cart escalator is a device used in multi-level retail stores for moving shopping carts parallel and adjacent to an escalator. Shoppers can load their shopping carts onto the conveyor, step onto the escalator, ride the escalator with the cart beside them and collect the cart ...

4. 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 ...

5. Attic ladder - Wikipedia

   en.wikipedia.org/wiki/Attic_ladder

   An attic ladder (US) or loft ladder (UK) is a retractable ladder that is installed into an attic door/access panel. They are used as an inexpensive and compact alternative to having a stairway that ascends to the attic of a building. They are useful in areas with space constraints that would hinder the installation of a standard staircase.

6. Walmart - Wikipedia

   en.wikipedia.org/wiki/Walmart

   Walmart U.S. is the company's largest division, accounting for US$331.666 billion, or 65 percent of total sales, for fiscal 2019. [18] [19] It consists of three retail formats that have become commonplace in the United States: Supercenters, Discount Stores, Neighborhood Markets, and other small formats. The discount stores sell a variety of ...

7. John H. Balsley - Wikipedia

   en.wikipedia.org/wiki/John_H._Balsley

   John H. Balsley (May 29, 1823 – March 12, 1895) was a master carpenter and inventor, inventing a practical folding wooden stepladder and receiving the first U.S. patent issued for a safety stepladder in the year. He was born in Connellsville, Fayette County, Pennsylvania to George H. and Sarah (Shallenberger) Balsley. His father was also a ...