Search results
Results from the WOW.Com Content Network
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
This is an accepted version of this page This is the latest accepted revision, reviewed on 27 December 2024. Type of clock A traditional wind-up (key-wound), mechanical spring-powered alarm clock An alarm clock or alarm is a clock that is designed to alert an individual or group of people at a specified time. The primary function of these clocks is to awaken people from their night's sleep or ...
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
The Alarm Clock (Le Réveil-matin or Le Revéille-matin) is an oil-on-canvas painting [1] by the Belgian surrealist René Magritte, completed in 1957. It is held at a private collection. It depicts a painting inside the painting, depicting a bowl with several apples, upside down, on a table. A landscape appears as a background.
The lever escapement, invented by the English clockmaker Thomas Mudge in 1754 (albeit first used in 1769), is a type of escapement that is used in almost all mechanical watches, as well as small mechanical non-pendulum clocks, alarm clocks, and kitchen timers.
In 1787 Hutchins created the first American alarm clock. It was housed in a 29-by-14-inch (74 cm × 36 cm) wooden cabinet with mirrored doors, and had an extra gear that rang an attached bell at 4 a.m. [3] On February 23, 1789, Levi married Phoebe Hanaford, with whom he had ten children.
The first clock known to strike regularly on the hour, a clock with a verge and foliot mechanism, is recorded in Milan in 1336. [96] By 1341, clocks driven by weights were familiar enough to be able to be adapted for grain mills, [97] and by 1344 the clock in London's Old St Paul's Cathedral had been replaced by one with an escapement. [98]
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 ...