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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.
CLIFTON SPRINGS, NY — When it was brand spanking new, the school bell in the tower of the Old Red Brick Schoolhouse building rang high over Teft Avenue, its peals wafting throughout the Clifton ...
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Henry McShane (1830-1889), an immigrant from Dundalk, Ireland, established the McShane Bell Foundry in Baltimore, Maryland at Holliday and Centre Streets in 1856. By the late 19th century, the business had produced tens of thousands of bells, including dozens of chimes, shipping them out to churches and public buildings across the USA and beyond, and expanded to a large factory complex on ...
Diagram of electric time system used around 1910 to keep time in factories, schools, and other large institutions. The master clock (bottom center), controlled by a temperature-compensated mercury pendulum, is wired to slave clocks throughout the building. In addition to wall clocks, it also controls time stamps that are used to stamp documents ...
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