Ashley Calvert

Industrial Design Auction

Ruhmkorff induction coil. This model is mounted on a wooden base with brass parts and a black coil. The exterior of the coil is finished with lacquered linen cloth for waterproofing and insulation. The manufacturer is Gebrüder Bing Nürnberg (metallic logo on the wooden base: GBN). Produced between 1906 and 1919 for physics lessons in schools.

Dimensions: (LxBxH) 17x11x10 cm

Slide resistor / rheostat. The device consists of a metal coil on a ceramic core, mounted on a wooden base, with a metal sliding contact to adjust the resistance. Physikalische Werkstätten Göttingen (PhyWE) is the manufacturer that produced this type of rheostats for physics lessons. Produced between 1920 and 1950.

Dimensions: (LxBxH) 13.5x7.5x5.5 cm

Ruhmkorff-inductiespoel. Dit model is gemonteerd op een houten basis met messing onderdelen en een zwarte spoel. De buitenkant van de spoel is afgewerkt met gelakte linnen doek voor waterdichtheid en isolatie. De fabrikant is Gebrüder Bing Nürnberg (metalen logo op de houten basis: GBN). Geproduceerd tussen 1906 - 1919 voor natuurkunde lessen op scholen.
Afmetingen:  (LxBxH) 17x11x10 cm

Schuifweerstand/Reostaat. Het apparaat bestaat uit een metalen spoel op een keramische kern, gemonteerd op een houten basis, met een metalen schuifcontact om de weerstand te veranderen. Physikalische Werkstätten Göttingen (PhyWE) is de fabrikant die dit type schuifweerstanden maakte voor natuurkunde lessen. Geproduceerd tussen 1920- 1950.
Afmetingen: (LxBxH) 13,5x7,5x5,5

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Industrial equipment - Germany - Ruhmkorff induction coil.

Good condition - used with small signs of aging & blemishes

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Two early 20th‑century scientific apparatus items: a Ruhmkorff induction coil mounted on a wooden base with brass fittings and a black coil, manufactured by Gebrüder Bing Nürnberg for physics lessons between 1906 and 1919, measuring 17 × 11 × 10 cm and in good used condition with minor signs of aging and small stains; and a Physikalische Werkstätten Göttingen slider rheostat with a metal coil on a ceramic core, mounted on a wooden base with a sliding contact, produced between 1920 and 1950, dimensions 13.5 × 7.5 × 5.5 cm.

Industrial equipment - Germany - Ruhmkorff induction coil.

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