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Download PDF, EPUB, MOBI Grinding. Bench, Vise, and Floor Work. General Hints on Shop Practice. Toolmaking Volume 3

Grinding. Bench, Vise, and Floor Work. General Hints on Shop Practice. Toolmaking Volume 3 by International Schools
Grinding. Bench, Vise, and Floor Work. General Hints on Shop Practice. Toolmaking Volume 3
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Author: International Schools
Number of Pages: 170 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781130340891
Download Link: Grinding. Bench, Vise, and Floor Work. General Hints on Shop Practice. Toolmaking Volume 3
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1901 Excerpt: ...in connection with the selection of a lubricant, selecting one that is fluid enough to flow in between the surfaces. Thus, in machine tools and fine machinery, the rubbing surfaces 'are usually fitted very closely to each other, and, hence, fluid mineral oil having sufficient body to last a reasonable length of time must generally be used. 3. Cleaning Bearings.--Refined petroleum (also called kerosene, coal oil, or paraffin in different localities) and mineral sperm oil are among the most fluid commercial oils, and will flow into smaller spaces than heavier oils; both have the disadvantage, however, that they lack body; i. e., they will evaporate quickly and, consequently, are of little value as a lubricant. They are of great value however in cleaning rubbing surfaces, as they will dissolve or thin down almost any heavier oil, and can be used for cleaning bearings, etc., where it is suspected that the oil channels have become clogged by the gumming of the regular oil that is used. In such a case, a copious and constant supply of kerosene or mineral sperm oil may be applied to the bearing until the oil comes out clear; it must then immediately be followed by a copious application of the heavier oil generally used for lubrication, in order to prevent any cutting of the rubbing surfaces owing to their becoming dry through the rapid evaporation of the light oil. 4. Thinning Oils.--The lighter oils can often be used advantageously for thinning down the heavier oils in order to make a grade of oil suitable for some special purpose. Most of the lighter oils are quite inflammable, and, consequently, due care must be taken to prevent their ignition. 5. Volatile Oils.--Benzine, naphtha, and turpentine are used considerably in shops for cleaning purposes; these oils e...

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