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. Cat's eye road reflector the cat's eye road reflector is a simple device that has saved countless lives.
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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." carlson, chester. 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. Carlson was born in seattle, washington, usa. As a teenager, carlson supported his invalid parents by lumbar publishing a chemical journal. After attending Cal Tech in physics, carlson worked at an and 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.
Bread slicer 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. Burbank, luther 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, taxi and the Shasta daisy.
Blodgett, katherine kathering. Blodgett (1898-1979) was an American physicist and inventor who invented a micro-thin barium stearate film that makes ilahi 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." blood bank the idea of a blood bank was pioneered. Charles Richard Drew (1904-1950). 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. Drew set up and operated the blood plasma bank at the Presbyterian Hospital in New York city,. Drew's project was the model for the red Cross' system of blood banks, of which he became the first director.
Bathysphere a bathysphere is a pressurized metal sphere that allows people to go deep in the ocean, to depths at which diving unaided is impossible. This hollow cast iron sphere with very thick walls is lowered and raised from a ship using a steel cable. The bathysphere was invented by william beebe and Otis Barton (around 1930). William beebe ( an American naturalist and undersea explorer, tested the bathysphere in 1930, going down to 1426 feet in a 4'9" (1.45 m) diameter bathysphere. Beebe and Otis Barton descended about 3,000 ft (914 m) feet in a larger bathysphere in 1934. They descended off the coast of Nonsuch Island, bermuda in the Atlantic Ocean. During the dive, they communicated with the surface via telephone.
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Band-aid, bandages for wounds had been around since ancient times, but an easy-to-use dressing with an adhesive was invented by earle dickson (a cotton buyer at the johnson johnson company). Dickson perfected the band-aid in 1920, making a small, sterile adhesive bandage for home use. Dickson invented the band-aid for his wife, who had many kitchen accidents and needed an easy-to-use wound dressing. Dickson was rewarded by the johnson johnson company by being made a vice-president of the company. Bar code bar codes (also called Universal Product Codes or upc's) are small, coded julian labels that contain information about the item they are attached to; the information is contained in a numerical code, usually containing 12 digits. Upc's are easily scanned by laser beams. Upc's are used on many things, including most items for sale in stores, library books, inventory items, many packages and pieces of luggage being shipped, railroad cars, etc.
The upc may contain coded information about the item, its manufacturer, place of origin, destination, the owner, or other data. The first "bullseye code" was invented by norman Joseph woodland and Bernard Silver, from work which they began in 1948. On October 20, 1949, they patented their bullseye code (a series of concentric circles that were scannable from all directions, using regular light). Woodland and Silver patented a new upc in October 1952; the upc was also improved and adapted by david. Collins in the late 1950's (to track railroad cars). Upc's were first used in grocery stores in the early 1970's.
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. Bakelite was patented in 1907 by the belgian-born American chemist leo hendrik baekeland (november 14, 1863 - february 23, 1944). The nobel Prize winning German chemist Adolf von baeyer had experimented with this material in 1872, but did not complete its development or see its potential. Baekeland operated the general bakelite company from 1911 to 1939 (in Perth Amboy,.
J., usa and produced up to about 200,000 tons of bakelite annually. Bakelite replaced the very flammable celluloid plastic that had been so popular. The bracelet above is made of "butterscotch" bakelite. The first non-leaking ballpoint pen was invented in 1935 by the hungarian brothers lazlo and georg Biro. Lazlo was a chemist and georg was a newspaper editor. A ballpoint marker had been invented much earlier (in 1888 by john loud, an American leather tanner, who used the device for marking leather) but loud's marker leaked, making it impractical for everyday use. A new type of ink had to be developed; this is what the biro brothers did. The brothers patented their invention and then opened the first ballpoint manufacturing plant in Argentina, south America.
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In 1924, baird televised objects in outline. In 1925, he televised human faces. In 1926, baird was the first person to televise pictures of objects in motion. In 1930, baird made the first public broadcast of a tv show, from his studio to the london Coliseum Cinema; the screen consisted of a 6-ft by 3-ft array of 2,100 tiny flashlamp bulbs. Baird developed a color television in 1928, and a stereo television in 1946. Baird's mechanical television was usurped by electronic television, which he also worked. 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. For more buy information on baekeland, click here. Bakelite, essay 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.
That summer, the new device was tested in the mediterranean sea down to 210 ft (68 m) by cousteau, philippe tailliez, and Frédérik dumas. This safe, easy-to-use, and reliable device was the first modern scuba system. Assembly line, primitive assembly elements 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 most manufacturing processes. Baird, john logie, john Logie baird (1888-1946) was a scottish inventor and engineer who was a pioneer in the development of mechanical television.
Carolina, usa. For more information on the Wright brothers, click here. For a cloze activity on the Wright brothers, click here. Or click here for a coloring page on the Wright brothers. Aqualung, the aqualung is a breathing apparatus that supplied oxygen to divers and allowed them to stay underwater for several hours. It was invented in 1943. Jacques-yves cousteau ( ) and the French industrial gas control systems engineer Emile gagnan. Among the innovations in their device was a mechanism that provided inhalation and exhaust valves at the same level.
This early masking tape task was a wide paper tape with adhesive on only the edges of the tape - not in the middle. Drew made an improved tape called Scotch (TM) Brand Cellulose tape in 1930. This tape was a clear, all-purpose adhesive tape that was soon adopted worldwide. The first tape dispenser with a built-in cutting edge was invented in 1932 by john. Borden, another 3M employee. Airplane, the first working airplane was invented, designed, made, and flown by the. Wright brothers, wilbur Wright (1867-1912) and Orville Wright (1871-1948). Their "Wright Flyer" was a fabric-covered biplane with a wooden frame.
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Early Twentieth Century Inventors and Inventions:. M is a user-supported site. As inventory a bonus, site members have access to a banner-ad-free version of the site, with print-friendly pages. Click here to learn more. inventors and Inventions from 1901 to 1950: The first Half of the Twentieth Century. Adhesive tape, richard. 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). Drew's first tape invention was a masking tape made for painters in 1923 (this tape was designed to help painters paint a straight border between two colors).