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Telharmonium console by Thaddeus Cahill 1897. The Telharmonium (also known as the Dynamophone [1]) was an early electrical organ, developed by Thaddeus Cahill c. 1896 and patented in 1897. [2] [3] [4] The electrical signal from the Telharmonium was transmitted over wires; it was heard on the receiving end by means of "horn" speakers. [5]
Thaddeus Cahill (June 18, 1867 – April 12, 1934) was a prominent american inventor of the early 20th century. He is widely credited with the invention of the first electromechanical musical instrument, which he dubbed the telharmonium.
Autolite or Auto–Lite is an American brand of spark plugs and ignition wire sets headquartered in Cleveland, Ohio. Autolite products are sold in the United States, Canada, Mexico, and Australia. Until 2011, the Autolite brand was a part of Honeywell's automotive Consumer Products Group, along with FRAM and Prestone. Since then, it has been ...
1956 Chevrolet Corvette Transistorized "Hybrid" (vacuum tubes and transistors) Car Radio option. In 1936, Delco began producing the first dashboard-installed car radios. By the early 1970s, Delco had become a major supplier of automotive electronics equipment. Based in Kokomo, Indiana, Delco Electronics employed more than 30,000 at its peak. In ...
A Historical Guidebook to Old Columbus: Finding the Past in the Present in Ohio's Capital City. Athens, Ohio: Ohio University Press. ISBN 978-0821420126. OCLC 886535510. Lee, Alford Emory (1892), History of the City of Columbus, Capital of Ohio, Vol. 2 of 2, Chicago, Illinois: Munsell & Co. Lentz, Ed (2003). Columbus: The Story of a City. The ...
Baker Motor-Vehicle Co. Commercial Car Department, 1912. The Baker Motor-Vehicle Company, located at 63 West 80th Street in Cleveland, Ohio, specialized in vehicles for the commercial market. By October 1912, the company had a Commercial Car Department and had dealers situated in several leading cities around the United States. [13]
Lithium-ion battery Curve of price and capacity of lithium-ion batteries over time; the price of these batteries declined by 97% in three decades. Lithium is the alkali metal with lowest density and with the greatest electrochemical potential and energy-to-weight ratio .
The National Carbon Company was a dominant American manufacturer of batteries and lighting products in the early 20th century. It was founded in 1886 by the former Brush Electric Company executive W. H. Lawrence, in association with Myron T. Herrick, James Parmelee, and Webb Hayes, son of U.S. President Rutherford B. Hayes, in Cleveland, Ohio. [1]