Dr. Heinrich BrÃ 1\/4 ning ( 26 November 1885 in MÃ 1\/4 nster â `` 30 March 1970 ) was a German politican during the Weimar Republic . Between 1930 and 1932 he was the Chancellor of Germany . In 1930 , when the grand coalition under the Social Democrat Hermann MÃ 1\/4 ller collapsed , BrÃ 1\/4 ning was appointed chancellor on 29 March 1930 .