Crystal Palace International Electric Exhibition 1881-82

62 1 /8. Harrison, Cox Walker^ & Co., Darlington. Telephonic Apparatus, &c. Hunning’s Patent Micro-Telephone Transmitters^ Cox-Walker’s Receivers or Electrophones; Call Boards, &c., in various forms; Indicator Bells for showing when the line is occupied Individual Bell (Ander’s Patent) and Vibrating Keys for “ calling up ” any one of a number of stations on one line. Eastern Gallery and Western Gallery. Hutchinson & Co.^ 3 and 4, Great Winchestei’ Street E.C., Telephone No. 265. (Telegraphic address, “ Hutchinson, London.”) Ebonite Telephone Receivers ; India-rubber Tubing- for insulators ; “ International ” Tubing. This black tubing is the best known for gas, chemical, and telephonic use; it may be covered with braid of various materials and colours. Southern Gallery. 180 .—Johnson & Phillips, 16, Union Court, London, E.C.; and Charlton, S.E. Carbon Blocks for Microphones. (See Advt., P- South Nave and Southern Gallery. 181 .—Armand Lévy, 252, Goswell Road, London. Telephone Receivers in Vulcanite and Celluloid; Magnets; Vulcanite Rod sheet and moulded to any shape; Silk, Worsted, and Braided Transmitters. Eastern Gallery. m mSLÅTER Lewis> Hamilton Street, Birkenhead lelephomc Transmitter, Receivers, and Bell. Manufactured by -Exhibitor. Ince 20 Guineas per set of 2, including batteries Ihese instruments are not only of substantial character, but are free from the complications usually found in others. All the working contacts are of riveted platinum, and the coils are wound m the most careful manner with specially prepared silk-covered copper wire. The transmitter is enclosed in a stout polished teak case, of quite a new design in telephony, with a small sloping desk attached for taking notes &c.} and will stand, without an inch of wire being seen, upon a counter, table, chimney-piece, or wall-bracket. There are two receivers of special design with, each transmitter, i.e. one for each ear. Eastern Gallery.. 183.—J. G- Lobeain, C.E., 9, Victoria Chambers, Westminster. 1. JNew Patent Loud-speaking non-Magnetic Telephone, not sus- ceptible to disturbances from induction or leakage on linos 2. Patent Call-Signal for magnetic telephones. Eastern Gallery and Concert-Room Gallery.