File:NSRW Artificial Ice - filters.jpg

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Description
English: Distilled water is run through several kinds of filters. In this illustration the two large cylinders you see in the rear are charcoal filters. After the water has passed through these cylinders it is pumped through pipes into the kind of filters at which you see these men at work. The men are putting on a fresh filter cloth. Over this cloth is fastened another and coarser filter of perforated metal. Under the cloth is another disk of perforated metal. The water enters by the small pipe in the rear, is forced through the perforated metal and cloth and comes out into the larger pipe you see in front.
Date published 1914
Source The New Student's Reference Work, v. 2, 1914, between p. 910 and 911 (first page of essay on "Artificial Ice"; top right photo)
Author Brown Bros.
Permission
(Reusing this file)
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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This file has been extracted from an original image in The New Student's Reference Work: File:LA2-NSRW-2-0474.jpg.

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Public domain

The author died in 1936, so 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 80 years or fewer.

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

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

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current17:12, 28 March 2015Thumbnail for version as of 17:12, 28 March 2015731 × 879 (380 KB)Library Guy{{Information |Description ={{en|1=Distilled water is run through several kinds of filters. In this illustration the two large cylinders you see in the rear are charcoal filters. After the water has passed through these cylinders it is pumped throug...

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