Image:LA2-gutbrod-pressure-cooker-1864.png

Pressure cooker from tinned cast iron, made by Georg Gutbrod in Stuttgart, Germany.

This picture was scanned in 600 dpi bitonal from an article in Svenska Familj-Journalen, a Swedish monthly magazine from 1864, http://runeberg.org/famijour/1864/0286.html and is in the public domain because its copyright has expired.

This image (or other media file) is in the public domain because its copyright has expired. This applies to the United States, Canada, the European Union and those countries with a copyright term of life of the author plus 70 years. Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Côte d'Ivoire has a general copyright term of 99 years and Honduras has 75 years, but they do implement that rule of the shorter term. العربية | Asturianu | Български | Català | Česky | Dansk | Deutsch | English | Ελληνικά | Esperanto | Español | Euskara | فارسی | Français | Gaeilge | Galego | עברית | हिन्दी | Bahasa Indonesia | Italiano | 日本語 | 한국어 | Kurdî / كوردی | Lietuvių | Magyar | Nederlands | ‪Norsk (nynorsk)‬ | Bahasa Melayu | Polski | Português | Română | Русский | Slovenčina | Slovenščina | Shqip | Suomi | Sámegiella | Türkçe | ‪中文(简体)‬ | ‪中文(繁體)‬ | 粵語 | +/-

According to the article, the process of tinning cast iron was a trade secret at the time, and the factory of Georg Gutbrod in Stuttgart was the only firm that could deliver pressure cookers in tinned cast iron. Other firms sold pressure cookers made from copper, plate, or untinned cast iron. Gutbrod offered pressure cookers in ten different sizes, sold in Sweden for between 3 and 20 riksdaler.