Derby

Derby was a maker of ebauches in La Chaux-de-Fonds, part of Ebauches SA. The company is descended from F. Wuilleumier of Renan, which was later renamed Pedos and relocated to La Chaux-de-Fonds. Wuilleumier was a specialist in pedometers and created one of the first self-winding watches in the 1880s.

Wuilleumier

Wuilleumier Frères was perhaps the most important watchmaker to arise in Renan. Started in 1859, F. Wuilleumier specialized in timers and measuring devices. Indeed, as early as 1883, Félic. Wuilleumier was producing pedometers as well as watches in Renan.

An 1889 ad describes three important products of the company:

• LA PERPÉTUELLE never asks to be rewound. Just wear it. Get up and come into the apartment is enough to wind her up for 24 hours. The piece has a small dial (pressure gauge) which indicates for how many hours the watch has been wound.
• THE PEDOMETER, the size and shape of a watch, indicates exactly the distance covered by a pedestrian. All you have to do is hang it in your pocket. The distance is indicated in kilometer, English, Russian, etc.
• THE VELOCIMETER is a counter which is screwed to the axis of the wheel of the velocipede and which accurately reports the path traveled by the velocemen. Thanks to a brand new adjustment system, it can be adapted to any diameter of bicycle and tricycle wheels.

The company became known as Wuilleumier Frères by October 1892. Medals include Antwerp 1885, Liverpool 1886, Paris 1889, Chicago 1893, and Geneva 1890.

The company was registered as J.-Armand Wuilleumier on August 17, 1925.

Other Wuilleumier Frères Firms

A number of other unrelated companies existed under the name Wuilleumier Frères:

• Tramelan-Dessus, 1899-[[1966] (Later called Inula Watch Co. and Vuilleumier Frères)
• Graveur, La Chaux-de-Fonds, Rue du Coq 67, 1855
• Casemaker, La Chaux-de-Fonds, Soleil 15, 1877
• Watchmaker, La Chaux-de-Fonds (Jules-Edmond and Charles Armand Wuilleumier)
  • Rue St. Pierre 8, May 1 1898-1904
  • Progres 37 1904-1910 (factory sold in 1910)
  • Numa-Droz 35 1910-1932

Pedos

The company changed its name to Pedos SA in 1929 to reflect its most popular product at the time. Administrators at this point were Louis Schorer of Wangen s. Aar and Fernand Hippenmeyer of Gottlieben. The company was headquartered at the J-Armand Wuilleumier factory in Renan. René Ruchti of Büren joined Pedos management in 1931.

The sales offices for Pedos relocated to La Chaux-de-Fonds in 1932 along with Ollendorf Watch Co, with both sharing the same office at Rue du Parc 105. But manufacturing remained in Renan. The company found modest success with pedometers and golf timers in the 1920s. In the 1930s, Pedos specialized in measuring and timing devices, including the calculigraphe, a 26 ligne calculation watch which replaces the slide rule, along with the cartometer, curvimeter, and pedometer. Pedos also offered a complete range of counters and chronographs, including a 12 ligne chronograph.

Pedos gained infamy as a target for Fidhor in 1934 and was convicted for violating export and price controls.

Derby

Pedos gave way to Derby in 1939, relocating the headquarters to La Chaux-de-Fonds in 1941. The sole administrator of the company was Louis Schorer, with Fernand and Edgar Hippenmeyer, Ernest Schorer, and René Ruchti removed. Derby SA was reorganized again in 1946, with Louis Schorer remaining as president and Henri Jeannot of Brenets, Virgile Juillerat of Granges, and Charles Gschwend of Bienne added.

Derby was originally located at Rue du Parc 105 but relocated to Parc 148 in 1941. After the war, Derby moved to Rue du Paix 157a for a short time from 1946 until 1948. After this Derby relocated to their new headquarters at Rue du Crêt 5-7, where they remained at least until 1971.

Derby later found success as a specialist in electric and electronic movements as part of ETA, but the company continued to produce curvimeters into the 1970s, as pioneered by Wuilleumier before the turn of the century.

Derby also produced the Derbyvox table alarm clock, Swisselectric line of clock radios, and DAC line of electric travel alarm clocks in the 1960s. Another unusual Derby product was the "G-Controler" which measured inertial force of acceleration when mounted to the dashboard of a car. Perhaps this could be used with a Memopark or Memostop. Derby also produced a telephone known as the Derbyphone at this time.

In 1968, Derby introduced Cal. 9120, sold by Ebauches SA under the ESA brand. It was a rectangular electric clock movement with an electromagnetic balance powered by a battery. It shared its electronic circuit with the contemporary Dynotron Cal. 9150 and replaced the ETA 2420, ESA 9000, and ESA 9100 movements. Derby was listed as being headquartered at Place de la Gare 4 in Neuchâtel by this point, as it was increasingly controlled by Ebauches SA rather than being an independent company. In 1973 Derby introduced a quartz marine chronometer, which ran for three years on a single 1.5 volt battery.

Swissonic and EEM

By 1972 the company was called "Derby Swissonic", despite that brand also being used for other watches and movements. This was followed in 1974 by the introduction of a portable pen-shaped LED digital electric clock. Derby was also increasingly listed as being headquartered in Marin, and thus falling under EEM rather than being an independent company. As early as 1972 the La Chaux-de-Fonds operation was listed as a branch of EEM in employment ads.

In 1978 the Crêt 5-7 factory is listed in the Annuaire as Swissonic Ebauches Electroniques SA, as the Derby name had been retired and the company was a branch of EEM. This was changed to read simply "Ebauches Electroniques SA" in 1979 and 1980 and is no longer listed after this.