1851 Great Exhibition: Official Catalogue: Class X.: William Henry French
435. FRENCH, WILLIAM HENRY, Cardiff, Wales — Inventor.
Hydraulic printing telegraph, enabling one person simultaneously to print telegraphic communications at different distant stations or towns.
"Hydro-fluid" distributor, or water, telegraph, gas, and fire-engine controller, for forming a communication with any particular station or town; or any number of stations or towns connected with the hydraulic telegraph, and for the control of gas, water, and vapour service pipes.
Electric printing telegraph, similar to the former, but altered and improved.
Electric telegraph turn-plates, for changing the wires and circuits from main to branch lines and vice versa.
Portfolios, for filing newspapers, periodicals, music, manuscripts, letters, bills, receipts, etc.