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File:Pacinotti dynamo.jpg

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Summary

Description
English: Drawing of Antonio Pacinotti's dynamo, an early electrical generator invented by Italian professor Antonio Pacinotti about 1860. It was first to use a doughnut shaped armature with many windings (16 in this machine) distributed evenly along its circumference to even out the output waveform, producing almost steady direct current. It was the inspiration for the Gramme dynamo, the first machine to produce power commercially for industry. This drawing is of a machine presented at the Paris Electrical Exhibition in 1867, from the caption: "Pacinotti machine at the Paris Electrical Exhibition". Alterations: removed caption and discoloration along bottom edge.
Date
Source Downloaded from Heinrich Schellen (1884) Magneto-electric and Dynamo-electric Machines, 3rd Ed., Vol.1, D. Van Nostrand, New York, p.218, fig.124, translated by Nathaniel S. Keith and Percy Neyman, on Google Books.
Author The drawing is signed with two marginally legible names: 'L. LEGEA'(?) and 'J(?) CARTERET'. I haven't been able to find any information on either.
Permission
(Reusing this file)		 Public domain - published in USA before 1923

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Public domain
Public domain
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
United States
United States
This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

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Date/TimeThumbnailDimensionsUserComment
current21:20, 27 January 2008Thumbnail for version as of 21:20, 27 January 20081,295 × 839 (184 KB)Chetvorno{{Information |Description=Woodcut of Pacinotti dynamo, an early electrical generator invented by Italian professor Antonio Pacinotti about 1860. It was first to use a doughnut shaped armature with many windings along it's length to even out the output wa

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