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Charles Adler Jr. (June 20, 1899 – October 23, 1980) was an American inventor and engineer.He is most known for developing devices meant to improve transportation safety, including sonically actuated traffic lights, colorblind road signals, pedestrian push-buttons, and flashing aircraft lights.
He was born in Cressona, Pennsylvania on February 26, 1858 to William Hammer (1827–1895) and Martha Augusta Beck (1827–1861). [1] [2]He became a laboratory assistant to Thomas Edison in December 1879, and assisted in the development of the incandescent light bulb. [3]
Warren G. Grimes was born in rural Montgomery County in 1898 a few miles from where the Wright Brothers had lived and worked. [1] [failed verification] During 1913, at the age of 15, Warren Grimes ran away from an orphanage in Tiffin, Ohio to live with his brother Frank in Detroit.
The main difference between the B-1 & C-1 and the B-2 and C-2 sub-types was the presence of pitot heating and position & cabin lights while the B-2 and C-2 types lacked any electrical system. Bu 181V Prototype. Bü 181B-0 Pre-production series with Hirth HM 504 A-2 engine Bü 181B-1 With Hirth HM 500 A engine Bü 181B-2 As B-1 but no electrics
The earliest pipes were made of clay, and are found at the Temple of Bel at Nippur in Babylonia. [127] [b] 4000 BC: Oldest evidence of locks, the earliest example discovered in the ruins of Nineveh, the capital of ancient Assyria. [130] 4000 BC – 3400 BC: Oldest evidence of wheels, found in the countries of Ukraine, Poland, and Germany. [131 ...
In 1878, Lester Pelton invented his prototype known as the Pelton's wheel, first demonstrating it to miners in the Sierra Nevada. In 1880, Lester Pelton received a patent for his invention. [228] 1878 Bolometer. A bolometer measures the energy of incident electromagnetic radiation. It was invented in 1878 by American astronomer Samuel Pierpont ...
Cooper Industries was an American worldwide electrical products manufacturer headquartered in Houston, Texas. Founded in 1833, the company had seven operating divisions including Bussmann electrical and electronic fuses; Crouse-Hinds and CEAG explosion-proof electrical equipment; Halo and Metalux lighting fixtures; and Kyle and McGraw-Edison power systems products.
This also made him the eleventh American pilot. [3] A self-taught engineer, with his brother Charles he invented the first automobile speedometer, which made him rich. [2] The Warner Instrument Co. was incorporated in 1903, with Warner as vice president and general manager. [6] In 1912, he sold his speedometer company for $1.2 million. [2]