Percy L. Spencer invented which household appliance in 1947?
"Small appliance A small appliance, small domestic appliance, or small electrics are portable or semi-portable machines, generally used on table-tops, counter-tops, or other platforms, to accomplish a household task. Examples include microwave ovens, toasters, humidifiers, and coffeemakers. They contrast with major appliances (British ""white goods""), such as the refrigerator and washing machine, which cannot be easily moved and are generally placed on the floor. Small appliances also contrast with consumer electronics (British ""brown goods"") which are for leisure and entertainment rather than purely practical tasks. Some small appliances perform the same or similar function as their larger counterparts. For example,"
"sensation that continues to this day. A microwave oven cooks or heats food by dielectric heating. Cooking food with microwaves was discovered by Percy Spencer on October 8, 1945, while building magnetrons for radar sets at Raytheon. Spencer was working on an active radar set when he noticed a strange sensation, and saw that a peanut candy bar he had in his pocket started to melt. Although he was not the first to notice this phenomenon, as the holder of 120 patents, Spencer was no stranger to discovery and experiment, and realized what was happening. The radar had melted his"
"1933 Chicago World's Fair demonstrated cooking meals with a 60 MHz radio transmitter. In 1945 Percy Spencer, an engineer working on radar at Raytheon, noticed that microwave radiation from a magnetron oscillator melted a candy bar in his pocket. He investigated cooking with microwaves and invented the microwave oven, consisting of a magnetron feeding microwaves into a closed metal cavity containing food, which was patented by Raytheon on 8 October 1945. Microwave heating became widely used as an industrial process in industries such as plastics fabrication, and as a medical therapy to kill cancer cells in microwave hyperthermy. The traveling"
"production of electromagnetic waves of a small enough wavelength (microwaves). American engineer Percy Spencer is generally credited with inventing the modern microwave oven after World War II from radar technology developed during the war. Named the ""Radarange"", it was first sold in 1946. Raytheon later licensed its patents for a home-use microwave oven that was first introduced by Tappan in 1955, but these units were still too large and expensive for general home use. Sharp Corporation introduced the first microwave oven with a turntable between 1964 and 1966. The countertop microwave oven was first introduced in 1967 by the Amana"
"Spencer's microwave was popcorn, and the second was an egg, which exploded in the face of one of the experimenters. To verify his finding, Spencer created a high density electromagnetic field by feeding microwave power from a magnetron into a metal box from which it had no way to escape. When food was placed in the box with the microwave energy, the temperature of the food rose rapidly. On 8 October 1945, Raytheon filed a United States patent application for Spencer's microwave cooking process, and an oven that heated food using microwave energy from a magnetron was soon placed in"
"gas stove included the AGA cooker invented in 1922 by Gustaf Dalén. The first electric ovens were invented in the very late 19th century, however, like many electrical inventions destined for commercial use, mass ownership of electrical ovens could not be a reality until better and more efficient use of electricity was available. More recently, ovens have become slightly more high-tech in terms of cooking strategy. The microwave as a cooking tool was discovered by Percy Spencer in 1946, and with the help from engineers, the microwave oven was patented. The microwave oven uses microwave radiation to excite the molecules"
"to home appliances. By 1948, Thermador introduced the first ""Pro Range"" for residential use. Patterned after commercial restaurant equipment, Thermador developed the first home version warming drawer in 1952, a handy kitchen appliance that keeps dishes and foods warm while the oven is being used. Thermador continued to improve on kitchen appliances with the first self-cleaning oven in 1963. During the 1970s, Thermador continued to introduce kitchen appliance firsts, including the first ""smooth top"" cooktop using material developed by Corning Incorporated in 1970. Also, notable personalities such as Julia Child used Thermador oven in her critically acclaimed PBS TV series,"
"store, and powered by ""any one person (such as the ordinary domestic servant)"", who would have the task of compressing a bellows-like contraption to suck up dust through a removable, flexible pipe, to which a variety of shaped nozzles could be attached. In 1906 James B. Kirby developed his first of many vacuums called the ""Domestic Cyclone"". It used water for dirt separation. Later revisions came to be known as the Kirby Vacuum Cleaner. In 1907 department store janitor James Murray Spangler (1848-1915) of Canton, Ohio invented the first portable electric vacuum cleaner, obtaining a patent for the Electric Suction"
"Richfield Heritage Preserve. Jim Kirby James B. Kirby (September 28, 1884 – June 9, 1971) was an American inventor and self-taught electrical engineer who focused his career on ""eliminating the drudgery of housework"". He is known mostly for inventing the Kirby vacuum cleaner and the wringerless washing machine. In 1935, the famous news reporter and radio personality Lowell Thomas wrote a book entitled ""The Man Who Revolutionized the American Household"" about Jim Kirby and his drive to harness electricity to ease household chores. Much of Lowell’s work was devoted to describing Kirby’s whimsical, innovative home in Richfield, Ohio. Kirby had"
"Jim Kirby James B. Kirby (September 28, 1884 – June 9, 1971) was an American inventor and self-taught electrical engineer who focused his career on ""eliminating the drudgery of housework"". He is known mostly for inventing the Kirby vacuum cleaner and the wringerless washing machine. In 1935, the famous news reporter and radio personality Lowell Thomas wrote a book entitled ""The Man Who Revolutionized the American Household"" about Jim Kirby and his drive to harness electricity to ease household chores. Much of Lowell’s work was devoted to describing Kirby’s whimsical, innovative home in Richfield, Ohio. Kirby had purchased the land"
"egg was placed in a tea kettle, and the magnetron was placed directly above it. The result was the egg exploding in the face of one of his co-workers, who was looking in the kettle to observe. Spencer then created the first true microwave oven by attaching a high density electromagnetic field generator to an enclosed metal box. The magnetron emitted microwaves into the metal box blocking any escape, allowing for controlled and safe experimentation. He then placed various food items in the box, while observing effects and monitoring temperatures. Raytheon filed a patent on October 8, 1945 for a"
"cleaning device), a boxlike rectangular ""extractor"" with a perforated face and rollers to be pressed to the fabric, and a flexible connecting tube with a rigid tubular handle with a hand valve to turn off the suction when not needed; the whole unit could be mounted on a stationary base in a building or on a wheeled truck. In 1905 Ira Hobart Spencer (1873-1928) founded the Spencer Turbine Cleaner Co. in Hartford, Connecticut to make the Turbine Vacuum Cleaner, a stationary installed vacuum cleaning system with lightweight hoses that operates on only 5 inches of water suction, with a trademarked"
"Florida housewife, began throwing Tupperware parties in 1951 in order to demonstrate the product and explain the features. 1946 Spoonplug A spoonplug is a form of fishing lure. The spoonplug was invented by Elwood L. ""Buck"" Perry, then a physics and math teacher in Hickory, North Carolina. Elwood Perry combined science with a logical approach to fishing to create a ""total fishing system."" He is credited as being the father of structure fishing and was later inducted into the National Freshwater Fishing Hall of Fame. 1946 Chipper teeth A chipper teeth is a variant of a saw chain used on"
"government in September 1940. The magnetron was later described by American historian James Phinney Baxter III as ""[t]he most valuable cargo ever brought to our shores"". Contracts were awarded to Raytheon and other companies for mass production of the magnetron. In 1945, the specific heating effect of a high-power microwave beam was accidentally discovered by Percy Spencer, an American self-taught engineer from Howland, Maine. Employed by Raytheon at the time, he noticed that microwaves from an active radar set he was working on started to melt a chocolate bar he had in his pocket. The first food deliberately cooked with"
"Francis Bannerman & Sons of New York who continued to manufacture his shotgun until around 1907. Christopher Miner Spencer Christopher Miner Spencer (June 20, 1833 – January 14, 1922) was an American inventor, from Manchester, Connecticut, who invented the Spencer repeating rifle, one of the earliest models of lever-action rifle, a steam powered ""horseless carriage"", and several other inventions. He developed the first fully automatic turret lathe, which in its small- to medium-sized form is also known as a screw machine. Spencer worked for Samuel Colt’s factory, where he learned the arms-making trade. Although the Spencer rifle had been developed"
"or 78 rpm, changing between the various settings automatically—BSR McDonald supplied turntables and autochangers to most of the world's record player manufacturers, eventually gaining 87% of the market. By 1977, BSR's various factories produced over 250,000 units a week. 1932: Leonard Parsons is the first to use synthetic vitamin C as treatment for scurvy in children. 1933: Credenda Conduit Co. Ltd of Birmingham patent a Credastat automatic oven thermostat, which is fitted to Creda electric cookers. This is an early advancement in electric cookers and a feature that eventually becomes standard on all electric cookers. An example of this cooker"
"husband's workbench in the basement to clean up minor spills in the kitchen and upstairs. This inspired the design of a new household product specifically for use upstairs by women. The product appearance was completely re-designed by Gantz's design patent, the first design patent ever filed by B&D, renamed the Dustbuster, and introduced in January 1979 as a household product, not a power tool. Gantz was Manager of the Black & Decker United States Consumer Power Tool Division's Industrial Design Department at the time. Over a million Dustbusters were sold in its first year, four times that of the traditional"
"Persil Persil is a brand of laundry detergent manufactured and marketed by Henkel around the world except in the United Kingdom, Ireland, France, Latin America (except Mexico), China, Australia and New Zealand, where it is manufactured and marketed by Unilever. Persil was introduced in 1907 by Henkel. It was the first commercially available ""self-activated"" laundry detergent. The name was derived from two of its original ingredients, sodium perborate and sodium silicate. The chore of washing the laundry began to change with the introduction of washing powders in the 1880s. These new products originally were simply pulverized soap. New cleaning product"
"relieve tired housewives from the duty of washing dishes after a meal. Josephine died of a stroke or exhaustion in Chicago, Illinois, on August 14, 1913, and was buried in Glenwood Cemetery in Shelbyville, Illinois. In 2006 she was inducted into the National Inventors Hall of Fame. Other attempts had been made to produce a commercially viable dishwasher. In 1850 Joel Houghton designed a hand-cranked dish soaker. In the 1860s, L. A. Alexander improved on the device with a geared mechanism that allowed the user to spin racked dishes through a tub of water. Neither of these devices was particularly"
"Christopher Miner Spencer Christopher Miner Spencer (June 20, 1833 – January 14, 1922) was an American inventor, from Manchester, Connecticut, who invented the Spencer repeating rifle, one of the earliest models of lever-action rifle, a steam powered ""horseless carriage"", and several other inventions. He developed the first fully automatic turret lathe, which in its small- to medium-sized form is also known as a screw machine. Spencer worked for Samuel Colt’s factory, where he learned the arms-making trade. Although the Spencer rifle had been developed as early as 1859, it was not initially used by the Union. On August 18, 1863,"
"Winston L. Shelton Winston Laverne Shelton (born May 3, 1922) is an American inventor, electrical engineer and entrepreneur who has been awarded 76 US patents as an individual or as part of a team, as well as many corresponding patents. Shelton's patents have had an impact relating to home washing machines and the preparation of food in both the Quick Service Restaurant (QSR) industry and fine dining. Technologies Shelton developed while an engineer at General Electric are still in use after more than fifty years. His patent for the modern ""Washing Machine"" (US 3257830 A), licensed in 1965 to General"
"Percival H. Spencer Percival Hopkins Spencer (April 30, 1897 – January 16, 1995) was an American inventor, aviation pioneer, test pilot, and businessman. He was born on April 30, 1897 to Christopher Miner Spencer (1833-1922), the inventor of, among other things, the Spencer repeating rifle. The then 14-year-old Spencer built his first pontooned hang glider in April 1911 from plans he found in a ""Popular Mechanics"" magazine. On May 15, 1914, Spencer made his first powered flight in a Curtiss flying boat. In 1929, he broke the light airplane altitude record——piloting a Curtiss Robin monoplane. Spencer was the president of"
"the """"work of the washboard""""—saving consumers time and rendering the historic method of ""sun-bleaching"" (by laying clothes out in the sun) unnecessary. Persil was the first commercially available self-activated laundry detergent (combining bleach with the detergent). The invention of Persil was a significant breakthrough. The name, ""Persil"", is derived from two of the original ingredients, sodium perborate and silicate. The original name was deemed unsuitable as an international brand because it is hard to pronounce in some languages. Coincidentally, ""persil"" is the French word for the herb, parsley. Persil is sold in powder, liquid detergent, liquid capsule, liqui-gel, and tablet"
"attached to opposite ends. To cook the rice, the box was filled with washed rice and water, and then a current was applied. This caused the water to boil. When the rice was cooked, the reduction of the water quantity caused an increase in resistance which reduced the power to a stay-warm state. This method, however, was not suitable for different water qualities or degrees of rice washing and as such varied the amount of heat produced and the end results. It also presented a high risk of electrocution, thus it was not suitable for home cooking. In 1945, the"
"James M. Spangler James Murray Spangler (November 20, 1848 – January 22, 1915) was an American inventor, salesman and janitor who invented the first commercially successful portable electric vacuum cleaner that revolutionized household carpet cleaning. His device was not the first vacuum cleaner. However, Spangler's device was the first that was practical for home use. It was the first to use both a cloth filter bag and cleaning attachments. Spangler improved this basic model and received a patent for it in 1908. He formed the Electric Suction Sweeper Company to manufacture his device. William H. Hoover was so impressed with"
"were used for decoration or as planters, being air tight. Latrobe Stove The Latrobe Stove, also known as a ""Baltimore Heater"", was a coal-fired parlor heater made of cast iron and fitted into fireplaces as an insert. They were patented in 1846 and were very popular by the 1870s. The squat device was invented by John Hazelhurst Boneval Latrobe (1803–1891). He was the son of noted engineer and architect Benjamin Henry Latrobe II. Latrobe became a patent lawyer and was shy about taking credit for his stoves which succeeded Benjamin Franklin's much larger Franklin stove. In 1980 there were a"
"by Spencer in 1983 at the age of 86. Its design did not meet expectations and the sole example was donated to the Experimental Aircraft Association Museum in Oshkosh, Wisconsin. Spencer died at a nursing home in Torrance, California in 1995, aged 97. Percival H. Spencer Percival Hopkins Spencer (April 30, 1897 – January 16, 1995) was an American inventor, aviation pioneer, test pilot, and businessman. He was born on April 30, 1897 to Christopher Miner Spencer (1833-1922), the inventor of, among other things, the Spencer repeating rifle. The then 14-year-old Spencer built his first pontooned hang glider in April"
"the 1950s that dishwashers became a common household item after new suburban homes were built with the plumbing required to handle the extra hot water. Josephine Cochrane Josephine Garis Cochran (later Cochrane) (March 8, 1839 in Ashtabula County, Ohio – August 14, 1913 (age 74) in Chicago, Illinois) was the inventor of the first commercially successful automatic dishwasher, which she constructed together with mechanic George Butters. Cochran was posthumously inducted into the National Inventors Hall of Fame in 2006 for her invention of the dishwasher. Cochrane was the daughter of John Garis, a civil engineer, and Irene Fitch Garis. She"
"and Alice from The Brady Bunch cooked with Thermador appliances. In 1976, Thermador introduced the first ""Speedcooking"" oven, which combined thermal heat with microwave energy to cook up to 35 percent faster than conventional ovens. In 1978, Thermador introduced the first retractable pop-up downdraft ventilations system. Thermador continued to set industry standards with the first high-power super burner offering 11,500 BTUs output, an unmatched achievement at the time. In 1987, Thermador introduced the sealed gas burner with automatic reignition. In the 1990s, Thermador further refined gas burner technology with the exclusive Extralow burner, which cycle the flame on and off"
"before he was expected to leave for the trip at the age of 66. Spangler's family continued to receive royalties until his patent expired June 2, 1925. James M. Spangler James Murray Spangler (November 20, 1848 – January 22, 1915) was an American inventor, salesman and janitor who invented the first commercially successful portable electric vacuum cleaner that revolutionized household carpet cleaning. His device was not the first vacuum cleaner. However, Spangler's device was the first that was practical for home use. It was the first to use both a cloth filter bag and cleaning attachments. Spangler improved this basic"
"for a gross. The Legendary Flour Sifter was patented in 1930 by a descendant of Jacob Bromwell's, Thomas G. Melish. Jacob Bromwell (born 1785), a soldier of the War of 1812 and entrepreneur, moved from Baltimore, Maryland to Cincinnati, Ohio via the Ohio River on a flatboat. He became the first wire goods manufacturer when he established The Bromwell Brush and Wire Goods Co. in 1819 and filed for incorporation on February 12, 1883. The company supplied pioneering families with a multitude of household goods. He opened up his company in a six-story building at 181 Walnut Street in downtown"
"thoughts turned to a new, potential household coffee maker. During the late 1960s, the coffee percolator, a mainstays in American homes, the commercially available consumer alternative to instant coffee. Many drinkers disliked the coffee brewed by the common household percolator. A percolator reuses the same water and coffee grounds over and over, resulting in a bitter taste as some grounds are used three or four times. Marotta and his partner sought to replicate a replacement coffeemaker, based on the drip coffee makers utilized in restaurants and other commercial establishments, but not available to consumers. His wife, Ann Marotta, who also"
"version, designed by David Rittenhouse, solved many of the problems Franklin's original stove had, and became popular. Franklin's fame outweighed Rittenhouse's, though, so history remembers the Franklin Stove rather than the Rittenhouse Stove. The smaller Latrobe stove, often referred to as a Baltimore Heater, was patented in 1846 and became popular. Franklin stove The Franklin stove is a metal-lined fireplace named after Benjamin Franklin, who invented it in 1741. It had a hollow baffle near the rear (to transfer more heat from the fire to a room's air) and relied on an ""inverted siphon"" to draw the fire's hot fumes"