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Post by antique diver on May 15, 2024 11:13:49 GMT -8
This is the matching regulator that goes with my 1955 Siebe double tank rig. Licensed from the French to build this, it appears to be the first double hose regulator built by the old Siebe Gorman diving equipment company in London. This has stamp that appears to show the manufacture date as 1955, but they may have been available by 1954. If anyone has any additional information on dates please let me know. Even though it was at first glance just a copy of the Cousteau reg, count how many nice touches they have modified or added that haven't appeared on the Cousteau versions! ?
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Post by spirou on May 15, 2024 12:05:50 GMT -8
Hello Sorry no information over a production before 1955, but.... I take these two view on cg45 thanks to Adair, In my opinion, I think that at the beginning many manufacturers obtained licences to produce reproduction, other not ( Nemrod no licence, so big Friend from JYC). Rapidly many modified, for different reasons ( production process, or different point of view or trying to upgrade) the original cg45, but generally, it stays closed from the original. Today all producers used the basic principles, in there regulators even they claimed that they invented something. (The diameter of the first stage diaphragm on the actual LEGEND or some mares or else is the the same as the cg45.)  Screenshot_2024-05-15-21-32-42-461~2 by Patrick Michel, sur Flickr Interesting to see that in UK they like to have a SPG since the beginning.  Screenshot_2024-05-15-21-35-31-062~2 by Patrick Michel, sur Flickr So closed but , a bit different. ( It like the Broxton, it is a cg45, but with US upgrade.) Cheer's Fred |
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Post by spirou on May 15, 2024 12:14:03 GMT -8
I see that siebe like USD, place a screw to adjust the IP, the cg45 use shims 🥳
Take a lock also on the nozzles first stage they are different .
But the second stage lever seems to be the same , or very close.
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Post by DavidRitchieWilson on May 15, 2024 12:32:29 GMT -8
I know little or nothing about regulators, but the following page appeared in the 1953 Lillywhites underwater catalogue: Hope this helps. DRW |
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Post by antique diver on May 15, 2024 16:13:07 GMT -8
I know little or nothing about regulators, but the following page appeared in the 1953 Lillywhites underwater catalogue: Hope this helps. DRW Thanks for looking that up. I'm a little surprised, but glad to learn, that these were available in 1953. (maybe even sooner...?) I always thought the gauge face design looked like something from way further back. BTW, the gauge is still in working order and fairly accurate. Although I have used the double 38-like tanks, I have never dived with the reg and gauge. I have had this maybe 30 years without using it, but it will definitely go diving with me this summer. |
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Post by SeaRat on May 15, 2024 20:00:48 GMT -8
“…can also be rechargers by a simple hand-operated booster pump…”. Now, that’s interesting to me.
John
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Post by antique diver on May 16, 2024 6:30:02 GMT -8
“…can also be rechargers by a simple hand-operated booster pump…”. Now, that’s interesting to me. John That doesn't sound like much fun!  |
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Post by antique diver on May 16, 2024 6:49:54 GMT -8
Looking at the page kindly provided by DRW, we see that in 1953 a mostly complete diving rig would have cost the diver 65 Pounds Sterling. Converting that to today's US Dollars that seems to be about $1922. No wonder some wannabe divers in the early 1950's were trying to build their own Scuba rigs! |
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Post by nikeajax on May 16, 2024 8:35:36 GMT -8
That prosaic little hunk of brass riveted on there seems to be more of a badge than a label: you'd think for that much moolah, they'd have paid someone to be a little more creative: elegance sells  JB |
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Post by antique diver on May 16, 2024 10:01:42 GMT -8
That prosaic little hunk of brass riveted on there seems to be more of a badge than a label: you'd think for that much moolah, they'd have paid someone to be a little more creative: elegance sells JB It's a touch of modesty... an understatement. They know they are famous and don't have to flaunt it. I like it!  |
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Post by nikeajax on May 16, 2024 11:02:58 GMT -8
“…can also be recharged by a simple hand-operated booster pump…”. Now, that’s interesting to me. John That doesn't sound like much fun! A long time ago I tried to fill a car tire with a hand pump, that was seven-kinds of no-fun: I can't imagine doing this, it makes my whole body hurt jus' thinkin' 'bout it  I wonder what the "pump" looked like and what was the bore and stroke of such a thing? Also, what duration of time to achieve an operating pressure? JB |
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Post by vance on May 16, 2024 15:09:52 GMT -8
There are hand pumps for HP pellet guns. Many people use scuba tanks to fill their guns, and some use hand pumps. The tiny chamber (compared to a scuba tank) takes a lot of pumps (300 or so?) to get up to the required pressure. I can't imagine trying to fill even a 15cf tank with a hand pump, even if it is designed for high pressure.
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Post by nikeajax on May 16, 2024 15:12:37 GMT -8
I think a 72CF would leave you crippled for about a week--YIKES!
JB
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cg43
Pro Diver
Posts: 117
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Post by cg43 on May 17, 2024 3:59:21 GMT -8
Hello
90 pound = 2661 $ that's not the price for a simple hand pump like sold today .
I have seen an O2 boosterpump from Siebe-Gorman .
A simplified (manuel hand valve steering) littel two stage gas booster can be easily build for 2661 $ .
As I remember 1970 a big automatic two stage gas booster from the US company Haskel was about 3000 $ .
Sure they need 100 psi - to 150 psi air supply , but that's mostly availabel in a workshop .
Greetings Rainer
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Post by antique diver on May 17, 2024 20:24:17 GMT -8
Note that the lp seat carrier on the Siebe is secured with screws instead of rivets. Nice touch that allows easy changing of the soft seat without having to remove the whole horseshoe. This also gives access to the little oring that is often hardened, and only can be changed in Aqualung versions by drilling out the rivets.  |
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I wonder what the "pump" looked like and what was the bore and stroke of such a thing? Also, what duration of time to achieve an operating pressure?
