Vintage Alarm Clock has one or two bells that ring by means of a mainspring that powers a gear to propel a hammer back and forth between the two bells or between the interior sides of a single bell. In 1787, Levi Hutchins, of New Hampshire in the United States, was the first who invented the mechanical alarm clock. This device he made only for himself however, and it only rang at 4 AM, in order to wake him for his job. In 1847, The French inventor Antoine Redier was the first to patent an adjust

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