Short dome Electromagnetic Mantel Clock by Eureka Clock Co.


These clocks are mesmerising, having a large balance wheel which rotates in the vertical plane. It is fitted with timing screws around its circumference. Protected by the glass dome, the whole movement is on view.

The white enamel dial is signed ‘EUREKA CLOCK CO LTD/LONDON’. It has blued steel hands, and a subsidiary seconds dial.

The movement has an electro-magnetically impulsed balance which drives the mechanism. The movement is stamped ‘NO. 2683/PATENT NO 14614/1906’.

The clock takes 4 x standard ‘C’ batteries, contained within a regulated battery holder, which remains hidden under the polished & lacquered brass base.

  • Height:  28cms
  • Diameter: 20cms

Overhauled and guaranteed for 3 years.

The Eureka mantel timepiece was invented by Timothy Bernard Powers of New York shortly after 1900 and Patented in 1906.

The Eureka Clock Company in London, England made these clocks between 1908 and 1914, and it is thought that around 10,000 were made by them before their demise in 1914. The design of the balance is such that a constant voltage (of c.1.5 volts) is required to ensure consistency in the amplitude of oscillation. Unfortunately early 20th century battery technology struggled to deliver a suitably stable output hence such timepieces acquired a reputation for poor timekeeping. Nowadays, good timekeeping can be achieved through the use of regulated cells which provide a much more consistent voltage output.

Ref: Eureka

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