Crystal Palace International Electric Exhibition 1881-82
År: 1882
Sider: 102
UDK: 621.30 : 06 (064)
DOI: 10.48563/dtu-0000189
Official Catalogue, Edited by W. Grist with Specially Prepared Plans, showing the position of each exhibitor and indicating the spaces lighted by the various sytems.
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[39.] Key, firing.
[40.] Apparatus, containing seven Indicators, to show when a
vessel strikes a particular mine or group of mines. This instru-
ment is arranged so that the signal shall be the means whereby
the firing current is switched automatically to the cable and the
mine fired automatically, if so desired.
[41, 42, 43, 44, 45.] Voltaic Cells used for various purposes.
[46, 47, 48.] Galvanometers used for various purposes.
[49.] Low-resistance Coils and Thermo-Galvanometer.
[50.] High-resistance, one Megohm, for cable-testing.
[51.] Condenser, | M.F., for cable-testing.
[52.] Set of Tools for repairing instruments.
[52.] Ditto for making electrical joints, in box complete.
[53.] Dynamo-electric Exploder, worked by hand, for firing
low-tension detonators.
[54.] Apparatus, Lime Light, complete.
[55.]
TELEGRAPH EQUIPMENT.
Field Telegraph.
[56.] Cable waggon.
[57.] Instrument, Telegraph, Morse, Recording. (Not the
latest pattern.)
[58.] Ditto, Sounder.
[59.] Polarised Relay.
[60.] Wheel with Stand for coiling messages.