Crystal Palace International Electric Exhibition 1881-82

86 perfect insulation is obtained with the thinnest possible covering, the rate of production being- more than double that of any process hitherto in use. Gallery at hade of Concert-Room^ 339a.—Browne Wolsey Webb, 22, Harrington Square, N.W. Specimens of an Electrical Automatic Tell-Tale Till, for the pre- vention of fraud and mistakes by persons entrusted to take cash in retail businesses. Patented in Great Britain and abroad. It not only records and rings out each, separate payment, but adds it to the former amount; it cannot be worked backwards or falsified. Will be constructed to suit any kind of business. Southern Gallery. 340 .—Webster&Williams, 45, London Road., N.W. TheWebster- Williams Patent Anerithmoscope. The Anerithmoscope (patented) —a magic-lantern for displaying pictorial or other advertise- ments, changing them automatically at short intervals by means of mechanism actuated by electricity. The instrument is con- structed to act for a week without attention, illuminating and putting itself in action for a given number of hours each, evening. Also applicable to theatrical transparencies and naval or military signalling. Eastern Gallery. 341 .—R. Webster, F.R.A.S., 5, Queen Victoi’ia Street, E.C. Non-magnetisable Watches, for the use of electric engineers and attendants on dynamo-electi^c machines, &c. These watches are totally uninfluenced by the proximity of magnets, however powerful. Manufactured by R. Webster, Chronometer Maker, 5, Queen Victoria Street, London, E.C. Eastern Gallery. 342 .—Willcox & Gibbs, Regent Street, and Cheapside. Sewing Machines with. Electric Attachment. Eastern Gallery. 343 .—J. Willing, 366, Gray's Inn Lane, 'W.C. Electricity adapted to Electric Signs, Name Plates, Trade Specialities, Electric Advertisements, Novelties, &c. &c. Novel and most attractive. Bright concave discs are suspended within the letters written upon a sheet of zinc, tacked to a strainer. This is suspended by hinges to a suitable frame, and allowed to move freely. Behind is an electro-magnate, with, make and break apparatus, actuated by a single cell of a constant battery of the gravity kind requiring but little attention and working daily for 12 months without cleaning, the resultant pure copper, recouping a considerable portion of the cost of sulphate required for maintenance. Various positions. 343a.—Willing & Co., 366, GrayJs Inn Road, W.C. Reflectors, Lamp Panels, &c., in enamelled iron, for Electric Light or Gas. Have the advantage of a pure white glazed surface are clean and unbreakable. Incorrodible Iron Pans for Electric Batteries, Accumulators, &c. &c.; Stove Panels, Grate Fronts, Cones for Sunlights, Clock Dials, Gauges, &c. South-East Gallery. 343b.—Witty & Wyatt, 9, Fenchurch Street, E.C. Asbestos Articles of every description. Being acid-proof, as well as fire- proof,. they are specially adapted for insulators, &c. Samples of Asbestos fire and acid proof Articles manufactured by Exhibitors and by the H. W. John's Manufacturing Company, New York. (Sole European and Colonial Agents : Witty & Wyatt.) Frequent experiments. Western Gallery..