The concept of a dishwasher was first brought to light by Joel Houghton way back in 1850. This was a machine made of wood which had a wheel that had to be turned manually. This machine had no market except from the big hotels and restaurants. Josephine Cochrane then invented a device in 1886 that went on to become the predecessor of the modern dishwasher, thus she is known as the inventor of the modern dishwasher. She was the granddaughter of, John Fitch, the man who invented the steamboat and had no formal education in science.
Josephine Cochrane unveiled her invention at the Chicago World’s Fair in 1893. She came up with this invention as she wanted a device that could wash her fine china ware without chipping it. The smaller model of the dishwasher was however devised by William Howard Livens later in 1924 and this model was just suitable for use in households. This device allows utensils to be loaded from the front, a wire rack to hold the crockery items and a sprayer that keeps rotating. The dishwasher tub is made of stainless steel or plastic.
Stainless steel tubs are more efficient in comparison to the plastic ones because the heat is preserved and this allows speedy drying. Some models come with a child locking system to prevent accidents. Usually bio degradable or chemical detergents are used in dishwashers. Dishwashers have become an indispensable device in modern homes all across the word due to its various advantages.
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