This is a file from the Wikimedia Commons
From Wikipedia, the free encyclopedia

Original file ‎(422 × 794 pixels, file size: 133 KB, MIME type: image/png)

Summary

This technology image could be re-created using vector graphics as an SVG file. This has several advantages; see  Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with {{ vector version available|new image name}}.


It is recommended to name the SVG file “Dust catcher drawing.svg”—then the template Vector version available (or Vva) does not need the new image name parameter.
Description
Français : Pot à poussière et descente de gaz d'un haut fourneau. Cette conception, décrite comme primitive par l'auteur, s'est finalement avérée plus efficace que ses variantes "améliorées".
English: Dust catcher (or dust pot) and gaz downcomer of a blast furnace. This design, described as an early form by the author, was finally recognized as more efficient than its "upgrades".
Date
Source Blast-furnace construction in America, p.292
Author Joseph Esrey Johnson, Jr. (1870-1919)

Licensing

Public domain

This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.

You must also include a United States public domain tag to indicate why this work is in the public domain in the United States. Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II ( more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions ( more information).

This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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.

Information

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current 19:42, 25 June 2013 Thumbnail for version as of 19:42, 25 June 2013422 × 794 (133 KB)Borvan53User created page with UploadWizard
The following pages on the English Wikipedia use this file (pages on other projects are not listed):

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

Retrieved from " /info/en/?search=File:Dust_catcher_drawing.png"