Original file (1,026 × 1,290 pixels, file size: 407 KB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: Compound beam engine of the Fall River Line steamer Puritan (1891). The steel-framed engine, built by W. & A. Fletcher Co. of Hoboken, New Jersey, was the largest vertical beam (ie walking beam) engine ever constructed.
Fletcher compound beam engines were unusual in that the connecting rods of the two cylinders were attached to the skeleton beam at different points, giving them a different stroke. This particular engine, for example, had a high pressure cylinder with bore of 75 inches and 9 foot stroke while the low pressure cylinder had a bore of 110 inches by 14 foot stroke. The different stroke lengths of the individual pistons in Fletcher engines has been a source of much confusion to historians, some of whom have assumed that the ships had two separate engines while others have concluded the second stroke length must be the dimensions of a third piston in a triple expansion engine. The reason Fletcher compound beam engines had this unusual arrangement is not known, but at least some of them were capable of disabling the high pressure cylinder and working as simple expansion engines. |
| Date | |
| Source | Scientific American. V. LXIV. No. 6. New York: Munn & Co. 1891-02-07. Front page. |
| Author | Scientific American |
Licensing
 |
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.
|
 |
 |
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.
|
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 01:20, 15 March 2015 | | 1,026 × 1,290 (407 KB) | Gatoclass | {{Information |Description ={{en|1=Compound beam engine of the Fall River Line steamer ''Puritan'' (1891). The engine, built by W. & A. Fletcher Co. of Hoboken, New Jersey, was the largest marine vertical beam engine ever constructed. Fletcher comp... |
