12.10.25

New Process for Staining Wood

The Journal of the Board of Arts and Manufactures for Upper Canada, January 1867

In a recent report of the "Proceedings of the Franklin Institute," we find described a process of staining wood, by Barton H. Jenks, that promises to be of some utility. In the manufacture of some articles, where there is an amount of wear, or the articles are subject to abrasion, the beauty of the finished article is soon gone by the surface stain being soon worn through, and then the original color of the wood appears, rendering it unsightly, and its value is consequently impaired. But when, as by this process, the color is made to permeate the entire body of the article, even if it be seriously injured, it can be easily repaired or varnished so as to hide the defect. The process is described as follows:

"The wood to be treated is placed in a closed vessel, which is connected with an air pump, and the air is removed. The coloring fluid is then allowed to enter and permeate the wood, which it does in a very thorough manner, on account of the removal of all air from the fiber. The excess of fluid is then pumped out, or the wood is removed and allowed to dry in the usual way. The specimens exhibited were all of white pine, and were stained with the following substances:

1. Nitrate of iron ......... Warm grey, light
2. Nitrate or iron and paraffine ......... Warm grey, dark.
3. Sulphate of iron ......... Colder grey, light.
4. Sulphate of iron and paraffine ......... Colder grey, dark.
5. Sulphate of iron and logwood ......... Like 3.
6. Sulphate of iron, logwood, and paraffine ......... Like 2.
7. Chromate of potash ......... Yellow gray, light.
8. Chromate of potash and paraffine ......... Yellow gray, dark.
9. Bichromate of potash ......... Yellow gray, between 7 and 0.
10. Bichromate of potash and paraffine ......... Very rich yellow gray.
11. Logwood ......... Light orange.
12. Logwood and paraffine ......... Dark orange.
13. Aniline blue ......... Bluish slate.
14. Aniline blue and paraffine ......... Bluish slate, dark.
15. Aniline red ......... Violet, with yellow shade
16. Aniline red and paraffine ......... A little darker than 15.
17. Aniline solferino ......... Rich purple.
18. Aniline solferino and paraffine ......... Rich purple, darker.

"The blocks exhibited were sections cut from larger sticks after treatment, and they showed the color to have penetrated very evenly and thoroughly."

-American Artisan.

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