Some Technical Methods of Testing Miscellaneous Supplies; Including Paints and Paint Materials, Inks, Lubricating Oils, Soaps, Etc - Softcover
Inhaltsangabe
This historic book may have numerous typos, missing text or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1916. Not illustrated. Excerpt: ... Railroad are given in an article by Job« on Practical Testing and Valuation of Japan: The material desired consists of a pure turpentine hardener and oil drier, conforming to the following:: 1st. When equal parts by weight of the Japan and of pure turpentine are thoroughly mixed and i wared over a slat) of glass, which is then placed nearly vertical at a temperature of 100 degrees Fahrenheit, with a free access of:iir but not exposed to draft, the coating shall be hard and dry, neither brittle nor sticky, in not exceeding twelve minutes. 2d. When thoroughly mixed with pure raw linseed oil at the ordinary tempernture in proportions of 5 per cent by weight of Japan to 95 per cent by weight of raw linseed oil, no curdling shall result, nor any marked separation or settling on standing. 3d. When the above mixture is flowed over a slab of glass, which is then placed nearly vertical at a temperature of 100 degrees Fahrenheit, with free access to air but not exposed to draft, the coating shall dry throughout, neither brittle nor sticky. in not exceeding two hours. 4th. When five cubic centimeters of the Japan are poured into 95 cubic centimeters of pure turpentine at the ordinary temperature, and thoroughly shaken, a clear solution shall result, without residue, on standing one hour. 5th. After evaporation of the turpentine, the solid residue must be hard and tough, and must not "dust" when scratched with a knife. 0th. Benzin or mineral oil of any kind will not be permitted. This, with the following specification of the U. S. Navy Department, will furnish a very good basis for an examination of Japan drier: 1. Japan drier must not flash below 105 F. (open tester); must be of the best quality and made from pure kauri gum, pure linseed oil, pure spirits of turpentin...
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