Electrical glass battery ( Grenet cell ) ca 1880
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Electrical glass battery ( Grenet cell ) ca 1880
Dimensions
21 cm high
Circa
1890
Country of manufacture
Germany
Description
A Grenet cell or bichromate cell consists of a flask like glass jar with a hard rubber, porcelain or wood cover. From the cover two flat retort carbon or graphite plates are suspended parallel with an amalgamated zinc plate hanging between them. The zinc plate is supported by a brass sliding rod which allows the zinc to be drawn entirely out of the electrolyte. The electrolyte consists of water, potassium dichromate and sulphuric acid. The E.M.F. of the cell is between 1.92 to 2.20 volts.
The cell was actually invented by German physicist Johann Christian Poggendorff in 1842. It bears the name of Eugene Grenet, Jr. of Paris, France who made it more practical. He was granted a patent in 1859.
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Dealer information
Early Science
Early Science antiques was founded in 1978 by Fred de Vree based in the Netherlands where I can also be visited by appointment. I have been active for 4 decades as an antiqair and auctioneer, the last 20 years of which are specialized in scientific antiques. I visit collectors and fairs in many European countries. looking for special items please feel free to contact me by Phone or email ,if you need any information on my listed items or something you are looking for 0031653132842 [email protected]
