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 ASSEMBLY LINEPrimitive assembly line production was first used in 1901 by Ransome Eli Olds (1864-1950), an early car-maker (he manufactured the Oldsmobile, the first commercially successful American car). Henry Ford (1863-1947) used the first conveyor belt-based assembly-line in his car factory in 1913-14 in Ford's Highland Park, Michigan plant. This type of production greatly reduced the amount of time taken to put each car together (93 minutes for a Model T) from its parts, reducing production costs. Assembly lines are now used in many manufacturing processes. |
BASKETBALL  The game of basketball was invented by James Naismith (1861-1939). Naismith was a Canadian physical education instructor who invented the game in 1891 so that his students could participate in sports during the winter. In his original game, which he developed while at the Springfield, Massachusetts YMCA (Young Men's Christian Association), Naismith used a soccer ball which was thrown into peach baskets (with the basket bottoms intact). The first public basketball game was in Springfield, MA, USA, on March 11, 1892. Basketball was first played at the Olympics in Berlin Germany in 1936 (America won the gold medal, and Naismith was there).
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| BELL, ALEXANDER GRAHAM Alexander Graham Bell (March 3, 1847, Edinburgh, Scotland - August 2, 1922, Baddek, Nova Scotia) invented the telephone (with Thomas Watson) in 1876. Bell also improved Thomas Edison's phonograph. Bell invented the multiple telegraph (1875), the hydroairplane, the photo-sensitive selenium cell (the photophone, a wireless phone, developed with Sumner Tainter), and new techniques for teaching the deaf to speak. In 1882, Bell and his father-in-law, Gardiner Hubbard, bought and re-organized the journal "Science." Bell, Hubbard and others founded the National Geographic Society in 1888; Bell was the President of the National Geographic Society from 1898 to 1903. |
| BLOOD BANK The idea of a blood bank was pioneered by Dr. Charles Richard Drew (1904-1950). Dr. Drew was an American medical doctor and surgeon who started the idea of a blood bank and a system for the long term preservation of blood plasma (he found that plasma kept longer than whole blood). His ideas revolutionized the medical profession and saved many, many lives. Dr. Drew set up and operated the blood plasma bank at the Presbyterian Hospital in New York City, NY. Drew's project was the model for the Red Cross' system of blood banks, of which he became the first director. |
| BRAILLE TYPEWRITER The Hall Braille typewriter (also called a Braillewriter or Brailler) was invented in 1892 by Frank Haven Hall. Hall was the Superintendent of the Illinois Institution for the Blind. The Hall Braille typewriter was manufactured by the Harrison & Seifried company in Chicago, Illinois, USA. Hall introduced his invention on May 27, 1892, at Jacksonville, Illinois. It types raised Braille dots onto paper. |
| CARLSON, CHESTER F. Chester Floyd Carlson (1906-1968) invented xerography (which means "dry writing" in Greek) in 1938. Xerography makes paper copies without using ink (hence its name). In this process, static electricity charges a lighted plate; a plastic powder (called toner) is applied to the areas of the page to remain white. Chester F. Carlson was born in Seattle, Washington, USA. As a teenager, Carlson supported his invalid parents by publishing a chemical journal. After attending Cal Tech in physics, Carlson worked at an electronics firm. Carlson later experimented at home to find an efficient way of copying pages. He succeeded in 1938, and marketed his revolutionary device to about 20 companies before he could interest any. The Haloid Company (later called the Xerox Corporation) marketed it, and photocopying eventually became common and inexpensive. |
CARVER, GEORGE WASHINGTON  George Washington Carver (1865?-1943) was an American scientist, educator, humanitarian, and former slave. Carver developed hundreds of products from peanuts, sweet potatoes, pecans, and soybeans; his discoveries greatly improved the agricultural output and the health of Southern farmers. Before this, the only main crop in the South was cotton. The products that Carver invented included a rubber substitute, adhesives, foodstuffs, dyes, pigments, and many other products.
For more information on Carver, click here. For a cloze (fill-in-the-blank) activity on Carver, click here. |
| COTTON GIN The cotton gin is a machine that cleans cotton, removing its many seeds. This device revolutionized the cotton industry. Previously, this tedious job had been done by hand, using two combs. Eli Whitney (1765-1825) was an American inventor and engineer who invented the cotton gin; he patented the cotton gin on March 14, 1794. The cotton gin made much of the southern United States very rich, but cotton plantation owners rarely paid Whitney for the use of his invention, and Whitney went out of business. |
| CRUM, GEORGE The potato chip was invented in 1853 by George Crum. Crum was a Native American/African American chef at the Moon Lake Lodge resort in Saratoga Springs, New York, USA. French fries were popular at the restaurant and one day a diner complained that the fries were too thick. Although Crum made a thinner batch, the customer was still unsatisfied. Crum finally made fries that were too thin to eat with a fork, hoping to annoy the extremely fussy customer. The customer, surprisingly enough, was happy - and potato chips were invented! For more information on George Crum and potato chips, click here. |
| DAVENPORT, THOMAS Thomas Davenport (July 9, 1802 -July 6, 1851) was an American blacksmith and inventor who established the first commercially successful electric streetcar. Davenport, from Vermont, invented an electric motor in 1834 and began a small electric railway in 1835. He patented a device for "Improvements in propelling machinery by magnetism and electromagnetism" in 1837 (his electric railway). Davenport later started a workshop in New York City, New York, and published a journal on electromagnetism (it was printed on a press that was powered by motors which he devised). |
DREW, CHARLES RICHARD Dr. Charles Richard Drew (1904-1950) was an American medical doctor and surgeon who started the idea of a blood bank and a system for the long-term preservation of blood plasma (he found that plasma kept longer than whole blood). His ideas revolutionized the medical profession and have saved many, many lives.
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EDISON, THOMAS ALVA
Thomas Alva Edison (1847-1931) was an American inventor (also known as the Wizard of Menlo Park) whose many inventions revolutionized the world. His work includes improving the incandescent electric light bulb and inventing the phonograph, the phonograph record, the carbon telephone transmitter, and the motion-picture projector.
Edison's first job was as a telegraph operator, and in the course of his duties, he redesigned the stock-ticker machine. The Edison Universal Stock Printer gave him the capital ($40,000) to set up a laboratory in Menlo Park, New Jersey, to invent full-time (with many employees). Edison experimented with thousands of different light bulb filaments to find just the right materials to glow well, be long-lasting, and be inexpensive. In 1879, Edison discovered that a carbon filament in an oxygen-free bulb glowed but did not burn up for quite a while. This incandescent bulb revolutionized the world. |
ELEVATOR BRAKE Elisha Graves Otis (1811-1861) invented the elevator brake, which greatly improved the safety of elevators. He used a ratchet on a spring to catch the elevator in the event of an accident (like a broken cable).
In 1854, at the Crystal Palace Exposition in New York, Otis demonstrated how safe his elevator was by cutting the elevator's cable with an ax, and the elevator car stayed where it was in the shaft. Otis' invention spurred the development of skyscrapers, changing the look of cities around the world forever. |
| FORD, HENRY Henry Ford (1863-1947) was an American engineer and industrialist who used the first conveyor belt-based assembly-lines in his car factory, revolutionizing factory production. Ford manufactured affordable cars and paid high wages to his factory workers, allowing workers to buy the cars they made. After early work as a machinist, Ford built a gasoline engine in 1893. In 1896, Ford built a "horseless carriage," which he called the "Quadricycle," which means "four wheels" (others, including Charles Edgar and J. Frank Duryea, Elwood Haynes, Hiram Percy Maxim, and Charles Brady King had built earlier "horseless carriage"). In 1899, Ford formed the Detroit Automobile Company (which was later called the Henry Ford Company and then the Cadillac Motor Car Company). Ford introduced the Model T in October 1908; it was a great success (every Model T was painted black). Ford introduced conveyor belt-based assembly-line factory production and a $5 daily wage in 1913-14 in Ford's Highland Park, Michigan plant (primitive assembly line production had been started in 1901 by Ransome Eli. Olds, another early car-maker). This type of production greatly reduced the amount of time taken to put each car together (93 minutes for a Model T) from its parts, reducing production costs. |
| GAS MASK The gas mask was invented by Garrett Morgan, an African-American inventor. Morgan used his gas mask (patent No. 1,090,936, 1914) to rescue miners who were trapped underground in a noxious mine. Soon after, Morgan was asked to produce gas masks for the US Army. For more information on Garrett Morgan, click here. |
  HOWE, ELIASElias Howe (1819-1867) was American inventor who patented an improved sewing machine in 1846. His revolutionary machine used two separate threads, one threaded through the needle, and one in a shuttle; it was powered by a hand crank. A sideways-moving needle with its eye at one end would pierce the fabric, creating a loop of thread on the other side; a shuttle would then push thread through the loop, creating a tight lock stitch. Earlier sewing machines used only one thread and a chain stitch that could unravel. Howe's business did not thrive. Others, like Isaac Singer made slight modifications in the machine and built successful businesses. Howe sued those who had infringed on his patent and won royalties on all machines sold (he was paid $5.00 for each sewing machine sold). Howe died the year his patent expired. |
HYDE, IDA HENRIETTA  Ida Henrietta Hyde (1857-1945) was an American physiologist who invented the microelectrode in the 1930's. The microelectrode is a small device that electrically (or chemically) stimulates a living cell and records the electrical activity within that cell. Hyde was the first woman to graduate from the University of Heidelberg, to do research at the Harvard Medical School and to be elected to the American Physiological Society. |
 JANSKY, KARLKarl Gothe Jansky (1905-1949) was an American radio engineer who pioneered and developed radio astronomy. In 1932, he detected the first radio waves from a cosmic source - in the central region of the Milky Way Galaxy. |
| KAMEN, DEAN Dean Kamen is an American inventor who has invented many revolutionary devices and holds over 35 U.S. patents. He developed the portable medical infusion pump, which allows patients to receive medication, like insulin, away from the hospital, and has allowed diabetic women to carry and deliver babies much more safely. Kamen designed the iBot, a revolutionary wheelchair (that uses gyroscopes and computers) that the user "wears" - it allows increased mobility (it can even climb stairs) and improved social interaction (the user can "stand"). He also invented intravascular stents (devices that hold blocked arteries open) and the portable kidney dialysis machine, which has enabled kidney dialysis patients to avoid long hospital visits - they can do the dialysis themselves while they sleep. The Segway is a rechargable electric, single-person vehicle he invented. Kamen founded an educational learning center for children called Science Enrichment Encounters (or "SEE"), and FIRST ("For the Inspiration and Recognition of Science and Technology") which has a yearly robot competition for high school students. |
| KEVLAR Kevlar (poly[p-phenyleneterephtalamide]) is a polymer fiber that is five times stronger than the same weight of steel. Kevlar is used in bullet-proof vests, helmets, trampolines, tennis rackets, and many other commonly-used objects. Kevlar was invented by Stephanie Louise Kwolek and was first marketed by DuPont in 1971. |
LAND, E. H.  Edwin Herbert Land (1909-1991) was an American physicist and inventor who developed the first modern light polarizers (which eliminate glare) and other optical devices, investigated the mechanisms of color perception, and developed the instant photography process (the Polaroid camera). Land established the Polaroid Corp. in 1937. |
| LATIMER, LEWIS H.Lewis Howard Latimer (1848-1928) was an African-American inventor who was a member of Edison's research team, which was called "Edison's Pioneers." Latimer improved the newly-invented incandescent light bulb by inventing a carbon filament (which he patented in 1881).
For more information on Lewis Howard Latimer, click here. |
McCOY, ELIJAH Elijah McCoy (1843 or 1844-1929) was a mechanical engineer and inventor. McCoy's high-quality industrial inventions (especially his steam engine lubricator) were the basis for the expression "the real McCoy," meaning the real, authentic, or high-quality thing.
For more information on Elijah McCoy, click here. For a cloze activity on McCoy, click here. |
| MICROELECTRODEIda Henrietta Hyde (1857-1945) was an American physiologist who invented the microelectrode in the 1930's. The microelectrode is a small device that electrically (or chemically) stimulates a living cell and records the electrical activity within that cell. Hyde was the first woman to graduate from the University of Heidelberg, to do research at the Harvard Medical School and to be elected to the American Physiological Society. |
| MOORE, EDWIN The push pin ("a thumbtack with an elongated handle that makes it easier to put in and remove") was invented by the Pennsylvanian inventor Edwin Moore in 1900. Moore started a company producing these useful pins in 1900. After years of growing, his company incorporated on July 19, 1904, and was called the "Moore Push-Pin Company." The company 1912 through 1977, the Company was located in Germantown, Pennsylvania.
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MORGAN, GARRETT Garrett Augustus Morgan (March 4, 1877 - August 27, 1963), was an African-American inventor and businessman. He was the first person to patent a traffic signal. He also developed the gas mask (and many other inventions). Morgan used his gas mask (patent No. 1,090,936, 1914) to rescue miners who were trapped underground in a noxious mine. Soon after, Morgan was asked to produce gas masks for the US Army.
For more information on Morgan, click here. |
MORSE, SAMUEL F. B. Samuel Finley Breese Morse (1791-1872) was an American inventor and painter. After a successful career painting in oils (first painting historical scenes and then portraits), Morse built the first American telegraph around 1835 (the telegraph was also being developed independently in Europe).
A telegraph sends electrical signals over a long distance, through wires. In 1830, Joseph Henry (1797-1878) made the first long-distance telegraphic device - he sent an electric current for over a mile on wire that activated an electromagnet, causing a bell to ring. Morse patented a working telegraph machine in 1837, with help from his business partners Leonard Gale and Alfred Vail. Morse used a dots-and-spaces code for the letters of the alphabet and the numbers (Morse Code was later improved to use dots, dashes and spaces: for example E is dot, T is dash, A is dot-dash, N is dash-dot, O is dash-dash-dash, I is dot-dot, S is dot-dot-dot, etc.). By 1838, Morse could send 10 words per minute. Congress provided funds for building a telegraph line between Washington D.C. and Baltimore, Maryland, in 1843. Morse sent the first telegraphic message (from Washington D.C. to Baltimore) on May 24, 1844; the message was: "What hath God wrought?" The telegraph revolutionized long-distance communications. |
 MOTORCYCLEThe earliest motorcycle was a coal-powered, two-cylinder, steam-driven motorcycle that was developed in 1867 by the American inventor Sylvester Howard Roper. A gas-powered motorcycle was invented by the German inventor Gottlieb Daimler in 1885. His mostly wooden motorcycle had iron-banded wheels with wooden spokes. This bone-crunching vehicle was powered by a single-cylinder engine. |
| NAISMITH, JAMES James Naismith (1861-1939) was a Canadian physical education instructor who invented the game of basketball in 1891. He developed this indoor game so that his students could participate in sports during the winter. In his original game, which he invented while at the Springfield, Massachusetts YMCA (Young Men's Christian Association), Naismith used a soccer ball which were thrown into peach baskets (with their bottoms intact). The first public basketball game was in Springfield, MA, USA, on March 11, 1892. Basketball was first played at the Olympics in Berlin Germany in 1936 (America won the gold medal, and Naismith was there). Naismith was inducted into the Basketball Hall of Fame in 1978. |
| PARACHUTE A parachute is a device for slowing down one's descent while falling to the ground. Parachutes are used to skydive from airplanes, to jump from very high places, and to help slow down the descent of spacecraft. Parachutes are also used to slow down some race cars. The early parachutes were made from canvas (a strong cotton cloth). Light-weight (but very strong) silk cloth was then introduced for parachutes. Modern-day parachutes use nylon fabric. The idea of using a parachute to fall gently to the ground was written about by Leonardo da Vinci (1452-1519). The first parachute was demonstrated by Louis-Sébastien Lenormand in 1783 of France - he jumped from a very tall tree carrying two parasols (umbrellas). A few years later, some adventurous people jumped from hot-air balloons using primitive parachutes. The first person to jump from a flying airplane (and survive the fall) was Captain Albert Berry, who jumped from a U.S. Army plane in 1912. Parachutes were first used in war towards the end of World War 1. |
PHONOGRAPHS AND OTHER RECORD PLAYERS Records, used to record sound, were invented in 1877 by Thomas Alva Edison, who invented the first machine to record and play back sounds (the phonograph or record player). Early records were cylindrical, but flat disks soon replaced them.
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| POLAROID CAMERAThe Polaroid camera is a camera that develops the photograph while you wait (one-step photography ). It was invented by Edwin Herbert Land (1909-1991), an American physicist and inventor who also investigated the mechanisms of color perception, developed the first modern light polarizers (which eliminate glare), and other optical devices. Land established the Polaroid Corp. in 1937. |
| PORTABLE KIDNEY DIALYSIS MACHINE and PORTABLE MEDICAL INFUSION PUMP Dean Kamen is an American inventor who has invented many revolutionary devices and holds over 35 U.S. patents. He developed the portable medical infusion pump, which allows patients to receive medication, like insulin, away from the hospital, and has allowed diabetic women to carry and deliver babies much more safely. Kamen designed the iBot, a revolutionary wheelchair (that uses gyroscopes and computers) that the user "wears" - it allows increased mobility (it can even climb stairs) and improved social interaction (the user can "stand"). He also invented intravascular stents (devices that hold blocked arteries open) and the portable kidney dialysis machine, which has enabled kidney dialysis patients to avoid long hospital visits - they can do the dialysis themselves while they sleep. The Segway is a rechargable electric, single-person vehicle he invented. Kamen founded an educational learning center for children called Science Enrichment Encounters (or "SEE"), and FIRST ("For the Inspiration and Recognition of Science and Technology") which has a yearly robot competition for high school students. |
| POTATO CHIPS The potato chip was invented in 1853 by George Crum. Crum was a Native American/African American chef at the Moon Lake Lodge resort in Saratoga Springs, New York, USA. French fries were popular at the restaurant and one day a diner complained that the fries were too thick. Although Crum made a thinner batch, the customer was still unsatisfied. Crum finally made fries that were too thin to eat with a fork, hoping to annoy the extremely fussy customer. The customer, surprisingly enough, was happy - and potato chips were invented! For more information on George Crum and potato chips, click here. |
| PUSHPIN The push pin ("a thumbtack with an elongated handle that makes it easier to put in and remove") was invented by the Pennsylvanian inventor Edwin Moore in 1900. Moore started a company producing these useful pins in 1900. After years of growing, his company incorporated on July 19, 1904, and was called the "Moore Push-Pin Company." The company 1912 through 1977, the Company was located in Germantown, Pennsylvania.
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| RADIO The radio was invented by Nikola Tesla. The radio was promoted and popularized by Guglielmo Marconi in 1895. The first radio transmission across an ocean (the Atlantic Ocean) occurred on December 12, 1901. |
| RADIO TELESCOPE A radio telescope is a metal dish that gathers radio waves from space. Radio astronomy involves exploring space by examining radio waves from outer space. Radio astronomy was pioneered by Karl G. Jansky, who in 1932 first detected radio waves from a cosmic source - in the central region of the Milky Way Galaxy. Gote Reber (a ham radio operator) made the first true radio telescope (using a 32-foot diameter parabolic dish to focus the radio waves) after reading of Jansky's discoveries. One example of a radio telescope is the Very Large Array (VLA) in New Mexico. |
| RECORDS AND RECORD PLAYERSRecords, used to record sound, were invented in 1877 by Thomas Alva Edison, who invented the first machine to record and play back sounds (the phonograph or record player). Early records were cylindrical, but flat disks soon replaced them.
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| RENO, JESSE W. Jesse W. Reno was an American inventor who developed the first escalator in 1891. An escalator is a moving stairway that helps people move easily from floor to floor in building. On his "inclined elevator," passengers rode on an wedge-shaped supports attached to a conveyor belt at an incline of about 25 degrees. The original elevator had a stationary handrail (which was soon replaced with a moving handrail). |
| ROPER, SYLVESTER HOWARD Sylvester Howard Roper (1823-1896) was an American inventor from New Hampshire and Massachusetts. Roper developed a coal-powered, two-cylinder, steam-driven wooden motorcycle in 1867. Roper also developed a steam-driven car. Roper died at the age of 73 while testing a new motorcycle. |
| SEWING MACHINE The first functional sewing machine was invented by the French tailor Barthélemy Thimonnier in 1830. Other tailors feared for their livelihood, and burnt his workshop down. Elias Howe was American inventor who patented an improved sewing machine in 1846. Howe's revolutionary machine used two separate threads, one threaded through the needle, and one in a shuttle; it was powered by a hand crank. A sideways-moving needle with its eye at one end would pierce the fabric, creating a loop of thread on the other side; a shuttle would then push thread through the loop, creating a tight lock stitch. Earlier sewing machines used only one thread and a chain stitch that could unravel. Howe's business did not thrive. Others, like Isaac M. Singer made slight modifications in the machine and built successful businesses. Howe sued those who had infringed on his patent and won royalties on all machines sold (he was paid $5.00 for each sewing machine sold). Howe died the year his patent expired. |
| SEXTANT The sextant is an astronomical instrument that is used to determine latitude for navigation. It does this by measuring angular distances, like the altitude of the sun, moon and stars. The sextant was invented independently in both England and America in 1731. The sextant replaced the astrolabe. The word sextant comes from the Latin word meaning "one sixth." |
  SUNDBACH, GIDEONThe zipper was improved by the Swedish-American engineer, Gideon Sundbach, in 1913. Sundbach was also successful at selling his "Hookless 2." Sundbach sold these fasteners to the US Army, who put zippers on soldiers' clothing and gear during World War I. The word zipper was coined by B.F. Goodrich in 1923, whose company sold rubber galoshes equipped with zippers. Goodrich is said to have named them zippers because he liked the zipping sound they made when opened and closed. |
| TELEPHONE The telephone (meaning "far sound") is the most widely used telecommunications device. It was invented in 1876 by Alexander Graham Bell (with Thomas Watson). Bell patented his invention on March 1876 (patent No. 174,465). His device transmitted speech sounds over electric wires, and his idea has remained one of the most useful inventions ever made. |
 TESLA, NIKOLANikola Tesla (1856-1943) was a Serbian-American inventor who developed the radio, fluorescent lights, the Tesla coil (an air-core transformer that generates a huge voltage from high-frequency alternating current), remote control devices, and many other inventions; Tesla held 111 patents. Tesla developed and promoted the uses of alternating current (as opposed to direct current, which was promoted fiercely by Thomas Edison and General Electric). Tesla briefly worked with Thomas Edison. The unit of magnetic induction is named for Tesla; a tesla (abbreviated T) is equal to one weber per square meter. |
| TRAFFIC SIGNALGarrett Augustus Morgan (March 4, 1877 - August 27, 1963), was an African-American inventor and businessman. He was the first person to patent a traffic signal. He also developed the gas mask (and many other inventions). Morgan used his gas mask (patent No. 1,090,936, 1914) to rescue miners who were trapped underground in a noxious mine. Soon after, Morgan was asked to produce gas masks for the US Army.
For more information on Morgan, click here. |
| XEROGRAPHY Xerography (which means "dry writing" in Greek) is a proces of making copies that was invented in 1938 by Chester Floyd Carlson (1906-1968). Xerography makes copies without using ink (hence its name). In this process, static electricity charges a lighted plate; a plastic powder (called toner) is applied to the areas of the page to remain white. Carlson marketed his revolutionary device to about 20 companies before he could interest any. The Haloid Company (later called the Xerox Corporation) marketed it, and photocopying eventually became common and inexpensive. |
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Richard G. Drew (1899-1980) invented masking tape and clear adhesive tape (also called cellophane tape or Scotch tape). Drew was an engineer for the 3M company (the Minnesota Mining and Manufacturing).
The forerunner of the aerosol can was invented by Erik Rotheim of Norway. On November 23, 1927, Rotheim patented a can with a valve and propellant systems - it could hold and dispense liquids.
AIRPLANE
Leo Hendrik Baekeland (November 14, 1863 - February 23, 1944) was a Belgian-born American chemist who invented Velox photographic paper (1893) and Bakelite (1907), an inexpensive, nonflammable, versatile, and very popular plastic.
Bakelite (also called catalin) is a plastic, a dense synthetic polymer (a phenolic resin) that was used to make jewelry, game pieces, engine parts, radio boxes, switches, and many, many other objects. Bakelite was the first industrial thermoset plastic (a material that does not change its shape after being mixed and heated). Bakelite plastic is made from carbolic acid (phenol) and formaldehyde, which are mixed, heated, and then either molded or extruded into the desired shape.
BAND-AID®
BAR CODE
Kathering J. Blodgett (1898-1979) was an American physicist and inventor who invented a micro-thin barium stearate film that makes glass completely nonreflective and "invisible" (patent #2,220,660, March 16, 1938). Blodgett's invention has been used in eyeglasses, camera lenses, telescopes, microscopes, periscopes, and projector lenses. Blodgett also invented a gauge that measured the thickness of this type of coating (which can be only a few molecules thick), called a "color gauge."
BLUE JEANS
The automatic commercial bread slicer was invented in 1927 by Otto Frederick Rohwedder from Iowa, USA (Rohwedder had worked on his machine since 1912). His machine both sliced and wrapped a loaf of bread. In 1928, the bread slicer was improved by Gustav Papendick, a baker from St. Louis, Missouri.
Bubblegum was invented by Frank Henry Fleer in 1906, but was not successful; the formulation of Fleer's "Blibber-Blubber," was too sticky. In 1928, Walter E. Diemer invented a superior formulation for bubble gum, which he called " Double Bubble."
Luther Burbank (1849-1926) was an American plant breeder who developed over 800 new strains of plants, including many popular varieties of potato, plums, prunes, berries, trees, and flowers. One of his greatest inventions was the Russet Burbank potato (also called the Idaho potato), which he developed in 1871. This blight-resistant potato helped Ireland recover from its devastating potato famine of 1840-60. Burbank also developed the Flaming Gold nectarine, the Santa Rosa plum, and the Shasta daisy. Burbank was raised on a farm and only went to elementary school; he was self-educated. Burbank applied the works of Charles Darwin to plants. Of Darwin's The Variation of Animals and Plants under Domestication, Burbank said, "It opened up a new world to me."
The word game Scrabble® was developed by Alfred Mosher Butts in 1948. James Brunot did some rearranging of the squares and simplified the rules. A copyright was granted on December 1, 1948. Alfred Butts had been an architect, but lost his job in 1931 (during the depression). He then began developing games, including Lexico, Criss-Crosswords, and them Scrabble®. After about 4 years of paltry sales, Scrabble® became a hit.
CHOCOLATE CHIPS
Dr. John Stith Pemberton (1830-1888) was an American pharmacist, soldier, and inventor. He invented Coca-Cola on May 8th, 1886 in Atlanta, Georgia, USA. He had invented many syrups, medicines, and elixirs before, including a very popular drink called French Wine of Coca, which contained French Bordeaux wine, coca leaves, and caffeine (from the kola nut).
Cotton candy is a soft confection made from sugar that is heated and spun into slim threads that look like a mass of cotton. It was invented in 1897 by William Morrison and John C. Wharton, candymakers from Nashville, Tennessee.
CRAYONS
DISPOSABLE DIAPER
George Eastman (1854-1932) was an American inventor who made many improvements in photography. Eastman invented the dry plate method in 1879; this was an improvement in the wet plate process photographic process). He founded the Eastman Dry Plate company in 1881, located in Rochester, New York. Eastman and William Walker invented flexible roll film in 1882, eliminating the necessity of using cumbersome glass plates for photography. Eastman produced the first simple, all-purpose, fixed-focus camera in 1888, which sold for $25.00; this was the first KODAK Camera . By 1900, Eastman Kodak was producing a camera that cost only one dollar. Early cameras took round pictures. To get the film developed, the photographer had to send the entire camera to the Rochester factory. The company name was changed to Eastman Kodak Company in 1892, and is still one of the largest photographic companies in the world.
The electric iron was invented in 1882 by Henry W. Seeley, a New York inventor Seeley patented his "electric flatiron" on June 6, 1882 (patent no. 259,054). His iron weighed almost 15 pounds and took a long time to warm up.
The popsicle was invented by 11-years-old Frank Epperson in 1905. Epperson (1894-?) lived in San Francisco, California. Epperson had left a fruit drink out overnight (with a stirrer in it), and it froze, making a new treat. His frozen treat was originally called the Epsicle. Epperson got a patent on his "frozen ice on a stick" many years later, in 1923. The Epsicle was later renamed the popsicle. Epperson also invented the twin popsicle (with two sticks so it could be shared by two children), Fudgsicle, Creamsicle and Dreamsicle.
Philo Taylor Farnsworth (1906-1971) was an American inventor. Farnsworth invented many important components of the television, including power, focusing systems, synchronizing the signal, contrast, controls, and scanning. He also invented a radar system, a cold cathode ray tube, a new type of baby incubator, and the first electronic microscope. Farnsworth held over 300 patents.
The Ferris Wheel is a large amusement-park ride that is made of a giant, vertical, metal wheel that slowly turns around. The wheel is equipped with hanging compartments for people, who ride around in a circle, going far above the ground. The Ferris Wheel was invented by the Pittsburgh, Pennsylvania bridge-builder George Washington Gale Ferris Jr. (1859-1896) . The first Ferris wheel was opened on June 21, 1893 at the Chicago World's Fair. This Ferris wheel was 250 feet tall (the diameter of the wheel) - this is about the height of a 25 story building! It had 36 wooden cars that could each seat 40 people, and hold another 20 standing people plus a conductor. Each car was 27 feet long, 13 feet wide, and 9 feet tall. A total of 2000 people could ride the wheel at one time. The wheel was powered by two 1,000 horsepower engines and weighed over 4,000 tons. It cost 50 cents per ride. This same Ferris wheel was later used at the St. Louis exposition in 1904, but was scrapped in 1906. Ferris wheels are now common at amusement parks around the world - most are much smaller than the original.
Lewis E. Waterman was an American inventor and insurance salesman who developed a relatively leak-proof fountain pen; he patented his new invention in 1884 and revolutionized writing. Before his fountain pen, pen tips had to be tipped into ink after every few words. Waterman put an ink reservoir in the pen above the pen's metal nib (point). This reservoir would hold enough ink for a few pages of writing. There were many problems in developing the fountain pen, especially the difficulty of controlling the flow of the ink. Putting a sealed reservoir above the nib wouldn't let the ink flow, but if it wasn't sealed, all the ink would flow at once. Waterman used capillary action to replace the ink in the rubber sac with air so that the ink flowed smoothly but did not flow all at once. Also, the metals in the ink dissolved the steel pen nib, so Waterman used an iridium-plated gold nib. Waterman was also the first person to place a clip on the cap of the pen.
Benjamin Franklin (January 17, 1706-April 17, 1790) was an American statesman, writer, printer, and inventor. Franklin experimented extensively with electricity. In 1752, his experiments with a kite in a thunderstorm (never do this, many people have died trying it!) led to the development of the lightning rod. Franklin started the first circulating library in the colonies in 1731. He also invented bifocal glasses and the Franklin stove. The idea of daylight savings time was first proposed by Benjamin Franklin in 1784.
Joseph Gayetty invented toilet paper in 1857. His new toilet paper was composed of flat sheets. Before Gayetty's invention, people tore pages out of mail order catalogs - before catalogs were common, leaves were used. Unfortunately, Gayetty's invention failed. Walter Alcock (of Great Britain) later developed toilet paper on a roll ( instead of in flat sheets). Again, the invention failed.
Hot dogs began as sausages sold in buns. They were first sold from carts by German immigrants on the streets of New York City in the 1860s. The bun replaced a plate and made the hot dog easier to carry and eat. Sauerkraut was provided as a relish on the hot dog.
JAMES, RICHARD
Lincoln Logs are a popular children's toy building set that consists of interlocking notched logs. Children can easily make log cabins and other structures from the tiny wooden logs.
The parking meter is a device for generating money from a parking spot. When you put money in the meter, you are allowed to park for a given amount of time - after that, you can be given a parking ticket.
Cyrus Hall McCormick (February 15, 1809 - May 13, 1884) was an American inventor (of Irish descent) who developed the mechanical reaper. His new machine combined many of the steps involved in harvesting crops, greatly increased crop yields, decreased the number of field hands needed for the harvest, lowered costs, and revolutionized farming.
The microwave oven was invented as an accidental by-product of war-time (World War 2) radar research using magnetrons (vacuum tubes that produce microwave radiation). In 1946, the engineer Dr. Percy LeBaron Spencer, who worked for the Raytheon Corporation, was working on magnetrons. One day at work, he had a candy bar in his pocket, and found that it had melted. He realized that the microwaves he was working with had caused it to melt. After experimenting, he realized that microwaves would cook foods quickly - even faster than conventional ovens that cook with heat. The Raytheon Corporation produced the first commercial microwave oven in 1954; it was called the 1161 Radarange.
Mobiles are airy, hanging sculptures that move with the wind. Alexander Calder (1898-1976), an American sculptor, invented the mobile in the early 20th century. His mobiles eventually became famous worldwide.
The first method of refrigeration (cooling air by the evaporation of liquids in a vacuum) was invented in 1748 by William Cullen of the University of Glasgow, Scotland; Cullen did not apply his discovery to any practical purposes. Michael Farady, an English physicist liquefied ammonia to cause cooling (in the 1800's). Faraday's idea would eventually lead to the development of compressors, which compress gas to liquid form. The American inventor Oliver Evans designed the first refrigeration machine in 1805. In 1844, John Gorrie, an American doctor from Florida made a device based on Evans' invention that would make ice in order to cool the air for yellow fever patients.
Norbert Rillieux (March 17, 1806-October 8, 1894) was an African-American inventor and engineer who invented a device that revolutionized sugar processing. Rillieux's multiple effect vacuum sugar evaporator (patented in 1864) made the processing of sugar more efficient, faster, and much safer. The resulting sugar was also superior. His apparatus was eventually adopted by sugar processing plants all around the world.
The safety pin was invented by Walter Hunt in 1849. Hunt 1795-1859) patented the safety pin on April 10, 1849 (patent No. 6,281). Hunt's pin was made by twisting a length of wire. Hunt invented the safety pin in order to pay a debt of $15; he eventually sold the rights to his patent for $400.
The first typewriter was invented in 1867 by the American printer and editor Christopher Latham Sholes (Feb. 14, 1819 - Feb. 17, 1890). Sholes' prototype had the user hit a key (for each letter and number), which struck upward onto a flat plate, producing a carbon impression of the letter or number on the paper. He made the prototype using the key of an old telegraph transmitter. There was no way of spacing the letters, no carriage return, and no shift keys; these features would be added to later models.
The tractor is a high power but low-speed vehicle that is used in farming, construction, road building, and other work projects. Some tractors move on wheels, others move on a continuous track. The first gasoline-powered tractor was made in 1892 by John Froehlich, a blacksmith from Iowa. The first mass-produced tractors were sold by C.W. Hart and C.H. Parr of Charles City, Iowa.
Madam C. J. Walker (December 23, 1867 - May 25, 1919) was an inventor, businesswoman and self-made millionaire. Sarah Breedlove McWilliams C. J. Walker was an African-American who developed many beauty and hair care products that were extremely popular. Madam Walker started her cosmetics business in 1905. Her first product was a scalp treatment that used petrolatum and sulphur. She added Madam to her name and began selling her new "Walker System" door-to-door. Walker soon added new cosmetic products to her line. The products were very successful and she soon had many saleswomen, called "Walker Agents," who sold her products door to door and to beauty salons.
YALE JR., LINUS
ZAMBONI, FRANK J.