Editing Carl Benz (section)

==Benz's first factory and early inventions (1871–1882)==
In 1871, at the age of twenty-seven, Benz joined August Ritter, in launching the Iron Foundry and Mechanical Workshop in [[Mannheim]], later renamed Factory for Machines for Sheet-metal Working.<ref name="benz-bio-daimler">{{in lang|de}} [http://www.daimler.com/dccom/0-5-1333261-49-1279445-1-0-0-0-0-1-36-7145-0-0-0-0-0-0-0.html Karl Benz's life as described on daimler.com] {{webarchive|url=https://web.archive.org/web/20120629163949/http://www.daimler.com/dccom/0-5-1333261-49-1279445-1-0-0-0-0-1-36-7145-0-0-0-0-0-0-0.html |date=29 June 2012 }}</ref>

The enterprise's first year went very badly. Ritter turned out to be unreliable, and the business's tools were impounded. The difficulty was overcome when Benz's fiancée, [[Bertha Benz|Bertha Ringer]], bought out Ritter's share in the company, using her [[dowry]].<ref name="benz-bio-daimler" /><ref>[http://www.mbusa.com/heritage/karl-benz.do Mercedes-Benz, Home of Mercedes-Benz Luxury Automobiles<!-- bot-generated title -->] {{Webarchive|url=https://web.archive.org/web/20080515210836/http://www.mbusa.com/heritage/karl-benz.do |date=15 May 2008 }} at www.mbusa.com</ref>

On 20 July 1872,<ref>{{Cite web|title=Bertha Benz – The Woman behind the Automotive Revolution|url=https://media.daimler.com/marsMediaSite/en/instance/ko/Bertha-Benz--The-Woman-behind-the-Automotive-Revolution.xhtml?oid=9361402|website=marsMediaSite|language=en|access-date=2020-05-13|archive-date=14 August 2018|archive-url=https://web.archive.org/web/20180814071255/https://media.daimler.com/marsMediaSite/en/instance/ko/Bertha-Benz--The-Woman-behind-the-Automotive-Revolution.xhtml?oid=9361402|url-status=live}}</ref> Benz and Bertha Ringer married. They had five children: Eugen (1873), Richard (1874), Clara (1877), Thilde (1882), and Ellen (1890).

Despite the business misfortunes, Benz led in the development of new engines in the early factory he and his wife owned. To get more revenue, in 1878 he began to work on new patents. First, he concentrated on creating a reliable petrol [[two-stroke cycle|two-stroke engine]]. Benz finished his two-stroke engine on 31 December 1879, and was granted a patent for it on 28 June 1880.

While designing what would become the production standard for his two-stroke engine, Benz patented the [[accelerator (car)|speed regulation]] system, the [[ignition system|ignition]] using sparks with [[battery (electricity)|battery]], the [[spark plug]], the [[carburetor]], the [[clutch]], the [[gear shift]], and the water [[radiator]].