Some respirators.

Jul 21, 2011,06:00 AM
 

Yes, I have a few (the middle one isn't a Respirator).  Very nice watches. 

The Respirator name seems to relate to the fact that their waterproofing uses the fact that water pressure increases with depth to push the crystal more firmly against a rubber seal and the case, thus (allegedly) increasing the water resistance.  You can open the case simply by pushing the crystal with your thumbs and it and the movement pops out.

Dave

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About Zenith Respirator . . .

 
 By: DhanUlu : July 19th, 2011-07:18
Hello Friends, Although I generally interested in Jeager LeCoultre s, while I was searching for vintage watches in an auction web site, I have seen a square watch which called Zenith Respirator. When I saw the photo I have shocked, because this was my gra... 

Hi, Dhan . . .

 
 By: Dr No : July 20th, 2011-14:03
. . . the Respirator models were manufactured from the late '60s thru the mid '70s, and were designed to be more water resistant than usual. All Respirators were square or rectangular in shape, and were similar in design to EPSA Compressor 2 cases. These ... 

Some respirators.

 
 By: Panofsky : July 21st, 2011-06:00
Yes, I have a few (the middle one isn't a Respirator). Very nice watches. The Respirator name seems to relate to the fact that their waterproofing uses the fact that water pressure increases with depth to push the crystal more firmly against a rubber seal...  

And this is mine . . .

 
 By: DhanUlu : July 21st, 2011-07:38
Mine is that; Sorry for the bad quality photo. The dial is a bit different than yours . . . I have tried to pop the movement up but it is not opened for almost 30 years. Therefore, It didn't work I will go to a repairman tomorrow, Hopefully, He will manag...  

Mine is not quite square

 
 By: hoipolloi : July 23rd, 2011-19:06
Hi. I have some respirators here, but they are not so square and I also have some squares but they are not water proof....