1851 Great Exhibition: Official Catalogue: Class VII.: Charles E. Heinke
53. HEINKE, CHARLES E. — Inventor and Manufacturer.
Patent sub-marine helmet, dress, and apparatus, for examining and repairing of ships' bottoms, at sea or in dock, for the recovery of property from sunken vessels, and for making and repairing the foundations of viaducts and harbours.
Patent helmet air valve, for protecting the diver's life in case of any accident happening to the air-hose. It contains a sufficient quantity of air (say from ten minutes to a quarter of an hour) to give the diver time to ascend.
Patent helmet slide, which the diver can instantaneously close should the glass be accidentally broken.
Improved connecting joints, calculated to resist powerful pressure, having a double safety cap attached.
New-invented signal dial, by which the diver is enabled to make known his wants.
[The earliest mention of the use of the diving-bell in Europe was in 1509: in 1687 treasure was brought up from a sunken ship by William Phipps, a native of America. But the first practically useful diving-bell was the invention of Dr. Halley, in 1720, who also contrived a helmet to enable the diver to go out of the bell, and walk at the bottom for a considerable time. These diving helmets and dresses have been improved from time to time, and are now extensively used by engineers in hydraulic operations.— S. C.]