An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics.
Richard Jordan Gatling was an American inventor best known for his invention of the Gatling gun, which is considered to be the first successful machine gun.
A mechanical pencil, also clutch pencil, is a pencil with a replaceable and mechanically extendable solid pigment core called a "lead". The lead, often made of graphite, is not bonded to the outer casing, and can be mechanically extended as its point is worn away as it is being used.
John Kerwin Stewart was an entrepreneur and inventor. He founded the Stewart-Warner Corporation. In his lifetime he founded or purchased several companies and held 82 patents.
Shredded wheat is a nontrademarked breakfast cereal made from whole wheat formed into pillow-shaped biscuits. It is commonly available in three sizes: original, bite-sized and miniature. Both smaller sizes are available in a frosted variety, which has one side coated with sugar and usually gelatin. Some manufacturers have produced "filled" versions of the bite-size cereal containing a raisin at the center, or apricot, blueberry, raspberry, cherry, cranberry or golden syrup filling.
William Henry Bristol was an inventor, manufacturer, educator, and environmentalist. Bristol was born in Waterbury, Connecticut.
Marvin Pipkin was an American chemist, engineer, and scientist. During his time in the United States Army, he worked on gas mask innovations. These masks were used by soldiers as well as the public during World War I for protection against chemical weapons. His innovative improvements were used through the twentieth century.
Iwatsu Electric, Co., Ltd. TYO: 6704 is a Japanese electronics manufacturer founded 14 August 1938, whose primary focus is on the following three business domains:
Honeycomb structures are natural or man-made structures that have the geometry of a honeycomb to allow the minimization of the amount of used material to reach minimal weight and minimal material cost. The geometry of honeycomb structures can vary widely but the common feature of all such structures is an array of hollow cells formed between thin vertical walls. The cells are often columnar and hexagonal in shape. A honeycomb shaped structure provides a material with minimal density and relative high out-of-plane compression properties and out-of-plane shear properties.
The Mechanical Engineering Heritage (Japan) is a list of sites, landmarks, machines, and documents that made significant contributions to the development of mechanical engineering in Japan. Items in the list are certified by the Japan Society of Mechanical Engineers (JSME).
Hitachi Zosen Corporation is a major Japanese industrial and engineering corporation. It produces waste treatment plants, industrial plants, precision machinery, industrial machinery, steel mill process equipment, steel structures, construction machinery, tunnel boring machines, and power plants. Despite its name, Hitachi Zosen, of which last word literally means shipbuilding, no longer builds ships, having spun off the business to Universal Shipbuilding Corporation in 2002, nor is it a keiretsu company of Hitachi any longer.
Sharp Corporation is a Japanese multinational corporation that designs and manufactures electronic products, headquartered in Sakai-ku, Sakai, Osaka Prefecture. Since 2016 it has been majority owned by the Taiwan-based Foxconn Group. Sharp employs more than 50,000 people worldwide. The company was founded in September 1912 in Tokyo and takes its name from one of its founder's first Ever-Sharp mechanical pencil, which was invented by Tokuji Hayakawa in 1915.
Eversharp is an American brand of writing implements founded by Charles Rood Keeran in 1913 and marketed by Keeran & Co., based in Chicago. Keeran commercialised Eversharp mechanical pencils, then expanding to fountain pens when the company was acquired by the Wahl Adding Machine Co. in 1916 and it was named "Wahl-Eversharp". The company continued until 1957 when it was acquired by Parker Pen, which continued to use the Eversharp brand for a time.
A timeline of United States inventions (1890–1945) encompasses the ingenuity and innovative advancements of the United States within a historical context, dating from the Progressive Era to the end of World War II, which have been achieved by inventors who are either native-born or naturalized citizens of the United States. Copyright protection secures a person's right to his or her first-to-invent claim of the original invention in question, highlighted in Article I, Section 8, Clause 8 of the United States Constitution which gives the following enumerated power to the United States Congress:
To promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries.
A rigid chain actuator, known variously as a linear chain actuator, push-pull chain actuator, electric chain actuator or column-forming chain actuator, is a specialized mechanical linear actuator used in window operating, push-pull material handling and lift applications. The actuator is a chain and pinion device that forms an articulated telescoping member to transmit traction and thrust. High-capacity rigid chain lifting columns (jacks) can move dynamic loads exceeding 10 tonnes over more than 7 metres of travel.
The following timeline tables list the discoveries and inventions in the history of electrical and electronic engineering.
Thomas Parker was an English electrical engineer, inventor and industrialist. He patented improvements in lead-acid batteries and dynamos, and was a pioneer of manufacturing equipment that powered electric tramways and electric lighting. He invented the smokeless fuel Coalite. He formed the first company to distribute electricity over a wide area.
This is the history of science and technology in modern Japan.
