A can opener (in North American English and Australian English) or tin opener (in British and Commonwealth English) is a device used to open tin cans (metal cans). Although preservation of food using tin cans had been practiced since at least 1772 in the Netherlands, the first can openers were patented only in 1855 in England and in 1858 in the United States. Those openers were basically variations of a knife, and the 1855 design continues to be produced. The first can opener consisting of the now familiar sharp rotating cutting wheel, which travels around the can's ring slicing open the lid, was invented in 1870 but people found it difficult to operate. A breakthrough came in 1925 when a second, serrated wheel was added to hold the cutting wheel on the ring of the can. This easy to use design has become one of the most popular can opener models.
Tongs are used for gripping and lifting tools, of which there are many forms adapted to their specific use.[1] Some are merely large pincers or nippers, but the greatest number fall into three classes:
Coffeemakers or coffee machines are cooking appliances used to brew coffee. While there are many different types of coffeemakers using a number of different brewing principles, in the most common devices, coffee grounds are placed in a paper or metal filter inside a funnel, which is set over a glass or ceramic coffee pot, a cooking pot in the kettle family.