Diving Bell Small 173×320 Medium 346×640 Large 554×1024 Download Tiff Original 1298×2400 | (883.0 KB) Description A bell shaped chamber filled with compressed air to allow divers to surface underwater. Keywords bathysphere Galleries Submarines Source: William & Robert Chambers Encyclopaedia - A Dictionary of Universal Knowledge for the People (Philadelphia, PA: J. B. Lippincott & Co., 1881) Courtesy the private collection of Roy Winkelman
