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When an electric current is applied, it produces a repetitive buzzing, clanging or ringing sound. Electromechanical bells have been widely used at railroad crossings, in telephones, fire and burglar alarms, as school bells, doorbells, and alarms in industrial areas, since the late 1800s, but they are now being widely replaced with electronic ...
School bell visible in St Johns School, Sydney, Australia (1872) Typical School bell in Austria (1978-2021) Sound of a School bell in Austria The ringing of a school bell (In foreign) announces important times to a school's students and staff, such as marking the beginnings and ends of the school day, class periods, and breaks.
The Standard Electric Time Company was a Springfield, Massachusetts company founded in 1884, and was a manufacturer of synchronized clock systems and fire alarm systems. They were the oldest manufacturer of electric clocks in the United States. The company was acquired by Johnson Controls in 1970 and then Faraday in 1978.
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While a traditional carillon uses actual bells, electronic systems simulate a bell sound in several ways By striking semantra (rectangular metal bars roughly the diameter of a pencil, but of varying lengths) with an electric solenoid. By striking tubular bells similarly; By playing back a previously recorded bell sound
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The different kinds of bells and mortars and pestles were one of the main products in the early history of the foundry. The products of Juutila were originally sold as far as in Vyborg and Sortavala in Karelia. [4] Some of the products found their way even to St. Petersburg. [5] In the 1940s the foundry made a large number of school bells.
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