A concise glossary of terms used in Grecian, Roman, Italian, and Gothic architecture (1879)
Parker, John Henry, 1806-1884 · Oxford ; London : J. Parker · leaf 221
med for the purpose in eachjamb, and was usually kept suspended above the gateway,but was let down whenever an attack was apprehended:the principal entrances of almost all fortresses were pro-vided with several portcullises insuccession, at some little distanceapart: the old grooves for them…
Architecture
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
