Duralumin, Its Properties and Uses Page: 3 of 22
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T.A.C.A. Technical Memorandum No. 384
.is also of German origin. It .,as patented by the D ren Metal Works
In the German Empire, under the patent number D.8130, Class 9a, on
October 8, 1909, and consequently before the sale of the right of
manufacture to any foreign country.
The claim that the English duralumin differs in its composition
from the German duralumin, is inconclusive. The English manufac-
turers of duralumin still employ the formulas they obtained from the
inventor, Alfred. Wilm of Berlin, as I have proven by many analyses.
The process of manufacture has been patented in nearly all civ-
ilized countries. vickers Sons and Maxim, Ltd., London, obtained the
patent rights for England from the inventor in 1910, and began to
manufacture duralumin in Birmingham in 1911. This firm ceded the
French rights to the societye du Duralumin (Duralumin Company) in
Dives. The American patent was confiscated during the world War
and the rights of manufacture were given to the Aluminum Company of
America, The International Aluminum Company in Detroit and the
Baush Machine and Tool Company in Springfield, Massachusetts.
Patents were taken out in Denmark, Sweden, Norway, Switzerland,
Holland, Belgium and Austria-Hungary. The war prevented the taking
out of patents in Russia and Japan. Japan is said to have been
making duralumin for some time in Osaka; and Russia in Moscow.
Foreign manufacturers, without exception, call their products "dur-
alumin." There is already a considerable literature on duralumin,
both in Germany and in other countries.
The process of manufacture was no chance discovery, but the
result of many years of research in a well-equipped laboratory
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Beck, R. Duralumin, Its Properties and Uses, report, October 1924; (digital.library.unt.edu/ark:/67531/metadc58745/m1/3/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.