File:Britannica Dynamo 6.jpg
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Summary
| Description |
English: Ring-winding was invented by Dr Antonio Pacinotti of Florence in 1860, and was subsequently and independently reintroduced in 1870 by the Belgian electrician, Zénobe Théophile Gramme, whence it is also frequently called the “Gramme” winding. By this method the farther end of conductor 1 (fig. 5) is joined in series to the near end of conductor 2; this latter lies next to it on the surface of the core or immediately above it, so that both are simultaneously under the same pole-piece. For this series connexion to be possible, the armature core must be a hollow cylinder, supported from the shaft on an open non-magnetic spider or hub, between the arms of which there is room for the internal wire completing the loop. |
| Date | |
| Source | Encyclopædia Britannica, 1911 |
| Author | Encyclopædia Britannica, Volume 8, Slice 9., available freely at Project Gutenberg |
Licensing
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This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States. |  |
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This image comes from the Project Gutenberg archives. This is an image that has come from a book or document for which the American copyright has expired and this image is in the public domain in the United States and possibly other countries.
This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.net. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 17:30, 17 February 2011 | | 190 × 243 (11 KB) | Keith Edkins | =={{int:filedesc}}== {{Information |Description={{en|Ring-winding was invented by Dr Antonio Pacinotti of Florence in 1860, and was subsequently and independently reintroduced in 1870 by the Belgian electrician, Zénobe Théophile Gramme, whence it is als |
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