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419. WHISHAW, FRANCIS, 9 John Street, Adelphi — Designer and Inventor.
Telekouphonon, or speaking telegraph. Consisting of gutta percha, glass, metal, or other proper tubing, with mouthpieces of ivory, hard wood, or metal; furnished with whistles, organ-pipes, and other means of calling attention. The index mouthpiece attached to one end of the tube has an indicator to show from which room the call has been made. See the following cut.
Gutta percha telephone.
Railway trains communicator, for communicating between guard and driver, or passengers and driver, a telekouphonon, in different lengths, with screw joints to suit the lengths of the carriages and the spaces between them.
Gutta percha tube and lathe-band, as first made by the exhibitor in 1845.
Subaqueous insulated electric telegraph conductors.
Telegraphic private code box.
Model to illustrate the hydraulic telegraph.
Index electro one-wire telegraph, with perforated conversation codes.
Centimetral chronometer, made by Johnston, Clerkenwell. By means of tabulated velocities on a moveable ring the speeds of railway trains, etc., are accurately ascertained to the hundredth part of a minute, by observation merely, and without calculation.
Comparative plan of that part of the City of London which was destroyed by the Great Fire in 1666; showing its state at that period, and the alterations and improvements effected up to 1829, with historical and other notices.
Patent glass pipes to insulate and protect the wires of electric telegraphs when placed under ground.
Patent multitubular pipes, of glazed earthenware. Manufactured by William Northen, Vauxhall.
Chess-board, enamelled slate, executed by Mr. Magnus, Pimlico.
Whishaw's uniformity-of-time clock and telegraph; mechanical domestic telegraph; and index electric telegraph.
[The mechanical domestic telegraph consists of an arrangement of tubes formed of gutta percha, and supplied with metallic and other mouthpieces, to which a whistle is attached. By blowing into the tube the whistle is sounded in a remote apartment, and the message can then be delivered with scarcely any elevation of the voice through the tube, which transmits sound in a remarkable manner.—R. E.]
Wrought-iron chain pipes, with swivel joints, for protecting the wires of electric telegraphs under water.