In 1908, the Westclox Clock Company is issued a patent for the Big Ben alarm clock. The outstanding feature on this clock is the bell-back, which completely envelops the inner case back and is an integral part of the case. The bell-back provides a loud alarm.
The Warren Clock Company was formed in 1912 by Mr. Henry Warren as President. The company started by producing a new type of clock run by batteries, prior to that, clocks were either wound or run by weights.Replica Watches