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Some fire alarm systems utilize emergency voice alarm communication systems (EVAC) [17] to provide prerecorded and manual voice messages. Voice alarm systems are typically used in high-rise buildings, arenas, and other large "defend-in-place" occupancies such as hospitals and detention facilities where total evacuation is difficult to achieve.
A flying pendulum clock is a clock that uses a flying pendulum escapement mechanism. A small metal ball, connected by string, wraps around one brass post, then unwinds before repeating on the other brass post. The flying pendulum clock was invented and patented in 1883 by Adler Christian Clausen and J. C. Slafter in Minneapolis.
Telechron electric alarm clock. Telechron alarm clocks are particularly popular with collectors. Until about 1940, the overwhelming majority of Telechron alarm clocks had bell alarms. The entire mechanism was enclosed in a bell housing of steel. Atop the clock's coil was a metal strip that vibrated at 60 cycles per second when the alarm was ...
Manual fire alarm activation requires human intervention, as distinct from automatic fire alarm activation such as that provided through the use of heat detectors and smoke detectors. It is, however, possible for call points/pull stations to be used in conjunction with automatic detection as part of the overall fire detection and alarm system .
Founded as the Utility Manufacturing Company in 1934, it produced a wide variety of products, including wall clocks, alarm clocks, electric shavers, analog cameras, and more. It sold these through a medley of brands—including Falcon, Spartus, Galter, Regal, Monarch, Spencer, among others. It was founded in 1934 by Jack Galter (1904–1993) as ...
Accurist became the first company to sponsor the United Kingdom's speaking clock service between 1986 and 2008, [1] and also sponsored a Millennium Countdown clock at the Royal Observatory, Greenwich, which counted down the last 1,000 days before the year 2000 at the historic observatory.
Diet Rite was introduced in 1955 and initially released as a dietetic product, but was introduced nationwide and marketed to the general public as a healthful beverage in 1962.
La Crosse Technology introduced the radio-controlled clock, commonly (but incorrectly) called an "atomic clock" after the extremely accurate timepiece behind the radio signal it uses as a reference, into the United States commercial market in 1991. [3] [4] In 2004, the company was awarded a license to sell The Weather Channel branded weather ...