Tag: coil

Rare_Early_Induction_Coil_Or_Ruhmkorff_Coil_By_Heinrich_Daniel_Ruhmkorff_01_an

Rare Early Induction Coil Or Ruhmkorff Coil By Heinrich Daniel Ruhmkorff

Rare Early Induction Coil Or Ruhmkorff Coil By Heinrich Daniel Ruhmkorff
Rare Early Induction Coil Or Ruhmkorff Coil By Heinrich Daniel Ruhmkorff
Rare Early Induction Coil Or Ruhmkorff Coil By Heinrich Daniel Ruhmkorff
Rare Early Induction Coil Or Ruhmkorff Coil By Heinrich Daniel Ruhmkorff
Rare Early Induction Coil Or Ruhmkorff Coil By Heinrich Daniel Ruhmkorff
Rare Early Induction Coil Or Ruhmkorff Coil By Heinrich Daniel Ruhmkorff
Rare Early Induction Coil Or Ruhmkorff Coil By Heinrich Daniel Ruhmkorff
Rare Early Induction Coil Or Ruhmkorff Coil By Heinrich Daniel Ruhmkorff
Rare Early Induction Coil Or Ruhmkorff Coil By Heinrich Daniel Ruhmkorff
Rare Early Induction Coil Or Ruhmkorff Coil By Heinrich Daniel Ruhmkorff
Rare Early Induction Coil Or Ruhmkorff Coil By Heinrich Daniel Ruhmkorff
Rare Early Induction Coil Or Ruhmkorff Coil By Heinrich Daniel Ruhmkorff

Rare Early Induction Coil Or Ruhmkorff Coil By Heinrich Daniel Ruhmkorff
For sale an early original induction coil or Ruhmkorff coil by Heinrich Daniel Ruhmkorff. Comprised of a dark mahogany graduated base with a twelve-inch copper wound two-part coil with iron core and glass insulating circular end caps. At one end there are connections for the battery power source with a hand operated barrel switch to engage or disengage the battery power as required. The application of direct current to the inner winding causes the iron core of the coil to become magnetised which in turn effects a magnetic contact arm at the further end of the coil, namely the interrupter which rises and falls to continuously create and then break electrical contact. This motion has the effect of creating high voltage alternating current across the secondary coil which is then released via the two-pin spark gap provided on two upright insulated glass rods. Although unsigned, this example conforms in design to all known examples of Ruhmkorff’s early induction coils (ref images provided) and is undoubtedly from Ruhmkorff’s Paris workshop of the 1850’s. Very few extant examples seem to remain in existence and I can find just two of similar design which are held in museum collections. An extraordinarily rare and iconic instrument from the early industrialisation period of electricity. Heinrich Daniel Ruhmkorff was born in Hanover, Germany in 1803. Initially trained as a mechanical engineer in his birthplace under an engineer named Welhausen, Ruhmkorff first moved to Paris in the early 1820’s to work for a Physics lecturer but quickly moved to England to take up a position with the Bramah Company. Ruhmkorff had of course patented his first improvements to the induction coil in 1851 so it would seem that the rising popularity with which his invention was met would have been the catalyst for his decision albeit four years after the initial patent application. Despite common naming conventions for this instrument, the development of the induction coil began in the 1830’s following Michael Faraday’s 1831 investigations into what would ultimately become Faraday’s law of induction. Many prominent scientists developed upon Faraday’s work and there are conflicting accounts laying claim to the original inventor. Ruhmkorff’s claim related to the attention paid to the winding of the coil with copper wire, and numerous further refinements throughout the 1850’s led to the award of the Volta prize in 1858 by Napoleon III. Ruhmkorff died in 1877 and was buried in Paris. It is suggested that he died in a state of near poverty having donated most of his riches to scientific and charitable causes. An extraordinarily early and rare example of an induction coil from the workshop of this famous scientist. Jason Clarke Antiques are happy to discuss carriage, condition or for any other queries, alternatively, you can also message us and we will endeavour to come back to you as soon as possible. This item is in the category “Antiques\Science/Medicine\Scientific Instruments”. The seller is “jason750_1″ and is located in this country: GB. This item can be shipped to United Kingdom.
  • Antique: Yes
  • Type: Induction Coil
  • Period: 1800 to 1900
  • Material: Brass

Rare Early Induction Coil Or Ruhmkorff Coil By Heinrich Daniel Ruhmkorff
Original_1910_20_Early_Brass_Car_Ignition_Coil_for_Parts_Restoration_OEM_Auto_01_th

Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto

Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto
Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto
Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto
Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto
Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto
Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto
Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto
Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto
Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto
Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto
Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto
Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto

Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto
Original nice early brass era coil for Parts or Restoration OEM. Condition is For parts or not working. The item “Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto” is in sale since Friday, July 10, 2020. This item is in the category “eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Accessories”. The seller is “jsrestore” and is located in Barnegat, New Jersey. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay, Russian federation.
  • Manufacturer Part Number: 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927
  • Brand: Delco Remy
  • Type: Switch
  • Other Part Number: 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937
  • Interchange Part Number: Buick Cadillac Chevrolet GMC Chrysler Dodge Ford

Original 1910-20 Early Brass Car Ignition Coil for Parts/Restoration OEM Auto
Rare_Antique_Victorian_Early_Medical_Electric_Shock_Induction_Coil_Device_01_qbve

Rare Antique Victorian Early Medical Electric Shock Induction Coil Device

Rare Antique Victorian Early Medical Electric Shock Induction Coil Device
Rare Antique Victorian Early Medical Electric Shock Induction Coil Device
Rare Antique Victorian Early Medical Electric Shock Induction Coil Device
Rare Antique Victorian Early Medical Electric Shock Induction Coil Device
Rare Antique Victorian Early Medical Electric Shock Induction Coil Device
Rare Antique Victorian Early Medical Electric Shock Induction Coil Device
Rare Antique Victorian Early Medical Electric Shock Induction Coil Device
Rare Antique Victorian Early Medical Electric Shock Induction Coil Device
Rare Antique Victorian Early Medical Electric Shock Induction Coil Device
Rare Antique Victorian Early Medical Electric Shock Induction Coil Device

Rare Antique Victorian Early Medical Electric Shock Induction Coil Device
Rare antique 19th century early medical electrical shock induction coil / science medical equipment device. I cannot see any name or marks. Measurement: 13.8 cm diameter. See all pictures for condition. Sorry the device was not tested. The item “Rare Antique Victorian Early Medical Electric Shock Induction Coil Device” is in sale since Friday, June 14, 2019. This item is in the category “Antiques\Science/Medicine\Medical Instruments”. The seller is “jenniferc9315″ and is located in littlehampton, West Sussex. This item can be shipped worldwide.
  • Period: 1800 to 1900
  • Material: Old Resin / Brass
  • Type: Medical Instrument / science

Rare Antique Victorian Early Medical Electric Shock Induction Coil Device
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