Invention Timeline – Reinhard Mannesmann, German Inventor; Discoverer of the Mannesmann Process for Rolling Seamless Steel TubesSunday, September 28th, 2008
b. November 15, 1814 and d. ? 1894
German inventor. Discoverer of the Mannesmann process for rolling seamless steel tubes. By this process a hot steel billet is passed between two conical rolls set with their axes at a small angle to each other. The billet comes out as a tube with uniform walls, without the use of a mandril or anything else to make the central opening. The bicycle trade creates a great demand for Mannesmann tubes. The inventor and his brothers were leading makers of files in Germany. The former made special research into the nature of crucible steel. He was one of the first to suggest the electro-magnetic separation of ores.
He gathered all the tools of Ages; instruments shaped by his
Mediums of ancient sages, alchemists and iron-welders;
Gathered them and reared a tower-blocks of Science, pile
Apex dizzily tremendous-dazzling spire of Truth and
The giant’s dying, but it shall be said by progeny of Time, He
is not dead!
—Will S. Reynolds
1790—Wilkinson patented a process of drawing a leaden pipe through dies.
1797, March 12—Jean Denis Gandillot was born. He brought into use in France a method of welding square or round tubes of sheet-iron.