Frank Cunliffe of Waverley NSW applied for a patent for a diving mask in June of 1941, ‘for use for short periods by trochus, pearl and beche de mer divers and also for use in fish spearing and generally seeing underwater as in the location of submerged objects’. The patent was granted on 7th April 1942 (Australian Patent No 114,992).
According to the patent document ‘This invention has been specifically devised to provide a simple and handy diving mask which is adapted to be slipped in place on the face and covers an area thereof embracing the eyes and nose and is suited for seeing things underwater in a clear and comfortable manner as long as the diver can stay down without breathing, also it is of cheap and durable construction’.
Frank Cunliffe became interested in diving after seeing a youth wearing diving goggles, which he borrowed and tried out. He experimented with goggles and finally made a single lens mask which covered the eyes and nose and gave something like normal vision underwater. He began spearfishing in 1940 and tried out many different speargun designs before settling on a successful model, which he also patented. He began making sets of spearfishing equipment consisting of a mask, weight belt and speargun which he sold for six pounds and ten shillings.