Large induction coil by Alfred Apps, London, used by Sir William Crookes, with additional primary coil Large induction coil by Alfred Apps 1879
Induction coil with switch, simple hammer-break interrupter, discharging electrodes, and capacitor in base Induction coil with switch 1900-1980
Large induction coil made by Alfred Apps, London, for William Spottiswoode, F.R.S., with two primary coils. Large induction coil made by Alfred Apps 1876
Induction coil described as an 'electric ozonizer' and possibly used for freshening the air in a large room. Not fitted with an interrupter. Part of the Riviere collection, but mistakenly lost its A-number when accessioned. This is similar but not identical to the large induction coil attached to the D'Arsonval Cage as depicted in photos in Riviere's scrapbook in the Wellcome Library. induction coil
Horizontal induction coil with interruptor, reversing switch and 1 ebonite pillar with terminal on top (another missing), all on wooden plinth made by Harvey and Peak, Beak Street, London, English, 1890-1900 Horizontal Induction Coil 1890-1900
Induction coil, mounted on wooden base, 18" x 11", 10" high, coil mounted horizontally on top with switch gear and interrupter gear at one end, elec. no. 808. Induction coil
13inch spark induction coil, on wooden plinth, with 'on/off' switch. Dated April 1907. Manufactured by Harold Fowler, Flixton 13 inch spark induction coil 1907
Induction coil used by L. A.Woodward, possibly in conjunction with a Raman Spectrograph Induction coil used by L. A.Woodward
Induction coil for x-ray use, by A E Dean and Company Limited, London, England, 1903-1929. Induction coil for x-ray use 1903-1929
Induction coil by Newton & Co., 3 Fleet Street, London, no.1380, c.1910 Induction coil by Newton & Co. 1901-1920