Crystal Palace International Electric Exhibition 1881-82

100 Class XII — Magnets, Compasses, Horology, Instru- ments of Precision, &c. 437 .—Automatic Time Register and Alarm Company, Boston, Mass., U.S.A.—Electric Tell-Tale Clock for detecting irregularity in the service of watchmen, with Fire Alarm. Between China and Sheffield Courts. 437a.—A. Bardillon, 185, Rue d’Aléna, Paris. Instrument serving to indicate, in public carriage, whether empty or full. Gallery at Bach of Concert-Room. 438 .—Buss, Sombaet, & Co., Magdeburg, Germany. Patent Tachometers (Speed-Indicators), 500 in use; Patent Cosine Governor, the only perfect centrifugal governor in the market. Eastern Gallery. 439 .—T. B. De Hennaults et Fils, Fontaine FEvéque, pres Charleroi, Belgium. Compasses of great simplicity and precision, having the property of always keeping horizontal, shortening considerably the labour of mining engineers. Largely employed in mining operations in Belgium and France. Concert-Room Gallery. 440 .—J. Roth, Schlaefli, & Co., 35, Queen Victoria Street. Electric Clocks. [See Advt. p. 148.) Southern Gallery. Class XIII.—Miscellaneous. 441 .—Edme Blouzon, 30, Rue Notre Dame de Nazareth, Paris. Oil for engines. 442 .—A. Cance, 11, Rue St. Florentin, Paris. Electro-Magnetic Bobbins, of special construction on the Cance system. West Corridor. 443 .—Q-. Chapuis, 17, Rue Lourmel, Grenelle, Paris. Electric Flood Indicator; Electric Alarm Taps ; Electric Fly Killer. Eastern Gallery. 444 .—D. Cohn, 34, Rue du Sentier, Paris. Electric Lighters ; the Gay-Lussac Lighters ; Electric Bells, with lighting attach- ment. Eastern Gallery. 445 .—Desruelles & Serre, 8 "bis, Avenue Perrier, Paris. Electric Lighters for gas, for use in private mansions, &c. &c.; Automatic Lighters for distances; Apparatus indicating escape of gas; Electric Scent Consumers. Western Gallery. 446 .—Alph. Feemond, 5, Avenue Rapp, Paris. Egg-hatching Machines and Artificial Mothers, warmed and regulated by electricity; Automatic Regulator, for hatching machines warmed by water or by thermo-syphon; Electric Alarms; Electric Testers for Eggs; Artificial Feeders; Electric Apparatus of various kinds for poultry yards. Eastern Gallery. 447 .—Messrs. G-ravier, Kuksz, Luedtke, et Gbether, 25, Rue Leseno, Varsovie, Russie. A Memoir on the divisibility of electricity for private houses and all kinds of industrial applica- tions, "by A. Gravier. West Corridor. 448 .—Louis Poyet, 5, Rue de Provence, Paris. Proofs of wood engravings representing electric apparatus, and various scientific and industrial apparatus. Western Gallery.