Westclox became a major manufacturer of fuzes for military ordnance. In 1938, Westclox introduced its first portable travel alarm clock to the market.ĭuring World War II, Westclox and other General Time Corporation subsidiaries produced aviation instrumentation and control components, compasses for the United States Army, and clocks for the United States Navy. The Westclox unit became known as 'Westclox Division of General Time Corporation' in 1936. Twelve years later, in 1931, the company merged with the Seth Thomas Clock Company, with both companies becoming divisions of General Time Corporation. In 1919, Western Clock Co., Ltd., was incorporated. The company officially registered this trademark on January 18, 1916. The name appeared on Big Ben dials as early as 1911. The modern trademark of the company, 'Westclox,' first appeared on the back of Big Ben alarm clocks from 1910 to 1917. In 1910, the Big Ben became the first alarm clock advertised nationally, with ads placed in the Saturday Evening Post. The company's name was shortened to 'Western Clock Company' in 1912. The company first brought the Big Ben to market in 1909. This movement has a 'bell-back' design, meaning that the bell mechanism is integral to the clock's case. In 1908, the company received a patent for the 'Big Ben' alarm clock movement. Matthiessen reorganized it in 1888 as the Western Clock Manufacturing Company.

In 1887, the company reorganized under the new name Western Clock Company and again went bankrupt, and F. The main entrance Westclox building in Peru, Illinois Bankruptcies, reorganizations, and mergers

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