Freiberg aperture
The Freiberg aperture is a type of closed mine lamp that was typical of ore mining in the Ore Mountains in the 17th to 19th centuries.
The Freiberg screen consists of an arched wooden box, which is lined with sheet brass on the inside and a removable glass panel (located in a wooden frame) at the front (the lamp housings are rarely built for open use). The light source is a so-called cuckoo , a small oil burner made of brass with a wick inside the wooden box that was taken out while working in the pit. On the back there is an arched, vertical hook for carrying and fastening to the belt.
At the beginning of the 20th century, the lamp type was mainly replaced by carbide lamps . At mountain parades in the Ore Mountains, screens are still traditionally carried with them.
literature
- Kurt Repetzki: 3000 years of pit lights . On the history of the miner's lamp (= Leoben green booklets . No. 148 ). Montan-Verlag, Vienna 1973, DNB 36452510X , p. 24-26 .
- Karsten Porezag: The miner's open light . Sledge lamps, oil lamps, candle lamps. Glückauf GmbH, Essen 1980, ISBN 3-7739-0304-9 , p. 36-49 .