Novel dibenzo (b,f) azepines of the formula ##SPC1## Wherein R is alkyl of 1 to 4 carbon atoms, R.sub.1 is selected from the group consisting of hydrogen and alkyl of 1 to 4 carbon atoms, n is 0, 1 or 2 and AlK is alkyl of 1 to 2 carbon atoms and their non-toxic, pharmaceutically acceptable acid addition salts having antidepressant and neurosedative activity.