Huge Pair Of Two Part Holophane Prismatic Pendant Lights
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Width: 37.0 cm
Height: 37.0 cm
Depth: 37.0 cm
Estimated Price: £5.00 - £75.00 Estimated Time: Less than one week
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Can be collected from Doncaster, DN3
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--- Price is for the pair ---
Made of : Copper and prismatic glass
Manufacturer: Holophane Manufacturing Co
Date of Manufacture: (Worked from 1893) c.1920's
Country of Origin: England
Size: Height 37cm (14.6"), diameter 37cm (14.6")
Condition: Very Good
We have two rare and early, oversized two part holophane pendant lights, complete with their original hooked copper galleries and clips with fluted glass upper sections. Their bases are slightly diffused and branded 'Holophane'. 2141 Pat No's 114988. ' Made in England'. Price includes over 9ft of original chain from which they were suspended. These lights were salvaged from a Cornish chapel, they have been rewired.
In 1893, the French engineer and physicist André-Eugène Blondel (1863-1938), with the help of a Greek engineer, Spyridon Psaroudaki, invented the prismatic lens and started the Holophane Company of France, the wood Holophane coming from the Greek 'holos' for whole, and 'phane' for light.
The Holophane lampshade gave an even light by using the principle of a Fresnel lighthouse lens, the invention of which is credited to Augustin-Jean Fresnel (1788-1827), a scientist and French commissioner for lighthouses, and was first used in 1823 at Cordouan in the Gironde estuary.
Borosilicate glass (aka Pyrex) was used, which has a very low coefficient of thermal expansion making the lamp shade very resistant to thermal shock and stress.
In 1896 a British company licensed Holophane's patent and started Holophane Ltd in the UK.
The earliest Holophane prismatic borosilicate glass luminaires were designed for gas lighting during the 1890s. It became the lampshade of choice for electric lighting in public places such as churches, factories, and industrial buildings.
Wear Condition: Good
Designer: André-Eugène Blondel
Date of Manufacture: 1920
Place of Origin: United Kingdom of Great Britain and Northern Ireland
Material: Copper, Glass
Period: Early 20th Century
Listed By: EmmaL
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