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Français : Extrait du brevet 58035 du telharmonium de 1897, ... File history. Click on a date/time to view the file as it appeared at that time. Date/Time
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.
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]
Telharmonium patent us000580035-011 page 11 ... This file has been identified as being free of known restrictions under copyright law, including all related and ...
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A typical 12 V, 40 Ah lead-acid car battery. An automotive battery, or car battery, is a rechargeable battery that is used to start a motor vehicle.. Its main purpose is to provide an electric current to the electric-powered starting motor, which in turn starts the chemically-powered internal combustion engine that actually propels the vehicle.
Immediate source: The ‘Telharmonium’ or ‘Dynamophone’ Thaddeus Cahill, USA 1897. 120 Years of Electronic Music (120years.net). Date: 1907 (original file) Source: This file was derived from: Telharmonium - Scientific American 1907.png: Author: Telharmonium - Scientific American 1907.png: Unknown author; derivative work: Clusternote
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]