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padi56 · 4 August 2005, 04:55 PM

In the early 1920s, a famous Swiss casemaker, Francis Baumgartner, made cases based on a patent by Borgel. The idea involved sealing the case by taking the middle part and threading it on both sides, rotating in opposite directions. The movement and dial then were fited within a ring that screwed into the caseframe. Several companies then used Baumgartner-made cases in the 1920s, including Omega and Longines. However, the Borgel-based cases did not seal well at the stem opening. To solve that, two Swiss watchmakers in La Chaux-de-Fonds, Paul Perregaux and Georges Peret, applied for a Swiss patent in 1925 for a screwed stem watertight system .

Hans Wilsdorf of Rolex grasped that a hermetically sealed case, together with careful fitting of the crystal and the aquired special stem mechanism, would produce a better waterproof wristwatch. He quickly negotiated to have the Perregaux and Peret patent assigned to him. Wilsdorf then obtained a British patent on October 18, 1926.Mr Wisdorf was a very shrewd business man Drawings from the patent are shown below.

The Rolex Oyster was born and became a commercial success.. In 1927, a stenographer, Mercedes Gleitze, swam the English Channel with the unheard of accompaniment of a wristwatch –the Rolex Oyster— on her wrist for the entire 15 hour, 15 minute, swim.
http://people.timezone.com/mfriedber...der_water.html

1.Picture is Paul Perregaux silver case hallmark is 1924
I bought this from Eddie Platts,a few years ago.

2.Perregaux & Perret twin lock patent

JJ Irani · 4 August 2005, 05:40 PM

Thanks, Peter, very interesting.

Sam · 11 August 2005, 02:56 AM

Cool stuff....Thanks!

dman · 11 August 2005, 02:06 PM

Thanks Padi, one thing Mr. Wilsdorf was good at was looking past the present and obtaining patents on anything that might be of future use to him. Just the list of names alone is mind blowing.

padi56 · 11 August 2005, 05:10 PM

Quote:

Originally Posted by dman

Thanks Padi, one thing Mr. Wilsdorf was good at was looking past the present and obtaining patents on anything that might be of future use to him. Just the list of names alone is mind blowing.

Yes agree with you think he was a very clever man,but Rolex did invent
words like Rolesor and Rolesium.

dman · 11 August 2005, 10:51 PM

I know they invented them, the cool part is that they put a patent on them so that no one else could use them.

padi56 · 12 August 2005, 07:53 PM

Yes Darren agree with you horology speaking,Rolex themselves have not
invented a lot.But have acquired most of the patents, that make the modern day Rolex watch, just about the most recognised brand in todays world.

4 August 2005, 04:55 PM	#1
padi56 "TRF" Life Patron Join Date: Jun 2005 Real Name: Peter Location: Llanfairpwllgwyng Watch: ing you. Posts: 53,061	Paul Perregaux And The Rolex Twin Lock. In the early 1920s, a famous Swiss casemaker, Francis Baumgartner, made cases based on a patent by Borgel. The idea involved sealing the case by taking the middle part and threading it on both sides, rotating in opposite directions. The movement and dial then were fited within a ring that screwed into the caseframe. Several companies then used Baumgartner-made cases in the 1920s, including Omega and Longines. However, the Borgel-based cases did not seal well at the stem opening. To solve that, two Swiss watchmakers in La Chaux-de-Fonds, Paul Perregaux and Georges Peret, applied for a Swiss patent in 1925 for a screwed stem watertight system . Hans Wilsdorf of Rolex grasped that a hermetically sealed case, together with careful fitting of the crystal and the aquired special stem mechanism, would produce a better waterproof wristwatch. He quickly negotiated to have the Perregaux and Peret patent assigned to him. Wilsdorf then obtained a British patent on October 18, 1926.Mr Wisdorf was a very shrewd business man Drawings from the patent are shown below. The Rolex Oyster was born and became a commercial success.. In 1927, a stenographer, Mercedes Gleitze, swam the English Channel with the unheard of accompaniment of a wristwatch –the Rolex Oyster— on her wrist for the entire 15 hour, 15 minute, swim. http://people.timezone.com/mfriedber...der_water.html 1.Picture is Paul Perregaux silver case hallmark is 1924 I bought this from Eddie Platts,a few years ago. 2.Perregaux & Perret twin lock patent Attached Images __________________ ICom Pro3 All posts are my own opinion and my opinion only. "The clock of life is wound but once, and no man has the power to tell just when the hands will stop. Now is the only time you actually own the time, Place no faith in time, for the clock may soon be still for ever." Good Judgement comes from experience,experience comes from Bad Judgement,.Buy quality, cry once; buy cheap, cry again and again. www.mc0yad.club Second in command CEO and left handed watch winder

4 August 2005, 05:40 PM	#2
JJ Irani Fondly Remembered Join Date: May 2005 Real Name: JJ Location: Auckland, NZ Watch: ALL SOLD!! Posts: 74,319	Thanks, Peter, very interesting. __________________ Words fail me in expressing my utmost thanks to ALL of you for this wonderful support during my hour of need!! I firmly believe that my time on planet earth is NOT yet up!! I shall fight this to the very end.......and WIN!!

11 August 2005, 02:06 PM	#4
dman Lifetime TRF Patron Join Date: May 2005 Real Name: Daren Location: Austin Watch: the road Posts: 13,585	Thanks Padi, one thing Mr. Wilsdorf was good at was looking past the present and obtaining patents on anything that might be of future use to him. Just the list of names alone is mind blowing. __________________ You either get it or you don't, if you have to ask, YOU DON'T!! I really hope that midget cop doesn't find me in Kokomo.

11 August 2005, 10:51 PM	#6
dman Lifetime TRF Patron Join Date: May 2005 Real Name: Daren Location: Austin Watch: the road Posts: 13,585	I know they invented them, the cool part is that they put a patent on them so that no one else could use them. __________________ You either get it or you don't, if you have to ask, YOU DON'T!! I really hope that midget cop doesn't find me in Kokomo.

12 August 2005, 07:53 PM	#7
padi56 "TRF" Life Patron Join Date: Jun 2005 Real Name: Peter Location: Llanfairpwllgwyng Watch: ing you. Posts: 53,061	Yes Darren agree with you horology speaking,Rolex themselves have not invented a lot.But have acquired most of the patents, that make the modern day Rolex watch, just about the most recognised brand in todays world. __________________ ICom Pro3 All posts are my own opinion and my opinion only. "The clock of life is wound but once, and no man has the power to tell just when the hands will stop. Now is the only time you actually own the time, Place no faith in time, for the clock may soon be still for ever." Good Judgement comes from experience,experience comes from Bad Judgement,.Buy quality, cry once; buy cheap, cry again and again. www.mc0yad.club Second in command CEO and left handed watch winder

11 August 2005, 02:56 AM	#3
Sam Member Join Date: Jul 2005 Location: Texas Watch: Yes...too many!!! Posts: 426	Cool stuff....Thanks!

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