Experimental microphone in sound box, consisting of two small blocks of wood-charcoal pressed upon each other by a spring, probably made by David Hughes, England, 1878-1890 Experimental microphone in sound box, 1878-1890 1878-1890
Electrotherapeutic machine in large wooden box, for both galvanic and induced current 18 cell battery, coil galvanometer, made by Malaquin and Poulignier, Paris, 48 Rue Monsieur-le-Prince, French, 1880-1890 Electrotherapeutic machine in large wooden box 1880-1890
Four granular microphones, three in glass tubes, one in bamboo tube, probably made by David Edward Hughes, 1878-1890 four granular microphones, 1878-1890 1878-1890
Bichromate or Poggendorf cell; glass bottle with long narrow neck and brass collar. Into brass collar fits a stopper with two terminals and screw for locking central zinc plate at any height. Zinc plate is flanked on either side by carbon blocks, which in this case are made in two halves so they can be replaced. Poggendorf or bichromate cell
Six bichromate cells of carbon and zinc contained in case with brass fittings, European, 1880-1920 Six bichromate cells of carbon and zinc contained in case with brass fittings 1880-1920
Electromagnetic machine in walnut(?) box, containing battery, induction coil and 2 electrodes, made by Legendre, Paris, French, 1880-1890 Electromagnetic machine in walnut(?) box, containi 1880-1890
Pifco carbon arc lamp with original box and carbon rods. Made by Pifco, England, 1945 - 1955. Used for UV light treatments at home, made of carbon and metal Pifco carbon arc lamp with original box and carbon rods 1945 - 1955
Motorcycle gloves that belonged to Carl Fogarty, 1996. Motorcycle gloves that belonged to Carl Fogarty 1996
Pair of bichromate cells, - zinc and carbon plates suspended from wooden slot into glass jars, probably English, 1890-1900 Pair of bichromate cells 1890-1900
Bottle of ‘Battersea Carbon Granules’, No. 24 used to re-fill and repair early carbon microphones. Bottle of Carbon Granules 1925-1935
One experimental microphone in sound box, consisting of two small blocks of wood-charcoal pressed upon each other by a spring, probably made by David Edward Hughes, England, 1878-1890 One experimental microphone in sound box, 1878-1890 1878-1890
Four rectangular wooden boxes full of spare carbon rods for Dr. Riviere's lamps, Siemens and Co., maker, Lichtenburg, South African, 1890-1910 Four rectangular wooden boxes full of spare carbon rods for Dr. Riviere's lamps 1890-1910