Talk:Rockwell scale

From Wikipedia, the free encyclopedia

l times to temper it. this process makes it more brittle, but if th edge were to flake, it would just reveal another razor sharp layer beneath it.

[edit] Inventor of Rockwell scale?

I seem to recall reading that the inventor of the scale was related to the famous American illustrator Norman Rockwell. Does anyone know if that is in fact true? The article makes no mention of the inventor at all. —Preceding unsigned comment added by 68.160.186.157 (talk) 14:07, August 29, 2007 (UTC)

[edit] Stanley P. Rockwell

I took the liberty of adding a paragraph about the history of Rockwell hardness, and a bullet point regarding superficial Rockwell scales. Stanley P. Rockwell was the inventor, around 1919. His family was a big name in ball bearing manufacturing in and around Hartford, CT, at that time. The Rockwell bearing companies are now owned by the Swedish firm SKF, another big name in bearings. Stanley later started a heat treating company named after himself that still exists. I spoke to the plant manager of the Stanley P. Rockwell Co. by telephone in 2006, but he was not able to provide much historical information. I do not know whether Stanley was related to Norman. Author Vincent Lysaght was a longtime employee of the Wilson Mechanical Instrument Co. in New York City, and Charles Wilson wrote the foreword for his book.His Manliness (talk) 17:41, 21 February 2008 (UTC)