Originally when the flame safety lamp was designed it only had one gauze (screen mesh). Davey and other scientists discovered that the flame from a candle would not pass through the mesh of a certain size hole. This meant that the flame would not ignite any explosive gas on the other side of the mesh. Over time and as mining regulations was updated a second gauze (mesh) was added to lamps as a kind of safety back up. In the UK the regulations stated after the end of every shift, the flame safety lamp would have to be dismantled, cleaned and inspected. The gauzes would be inspected for holes and if need be the gauze would be replaced.
Now I know something new. Would you be able to tell me the hole sizes were used in inch square sizes and screen wire diameter used. I rally like the part after each shift the lamp would be recheck for functionality Good day and have yourself a Happy Thanksgiving from the other side of the pond. @@LampBoy3583
@@victoryfirst2878 I hope you had a great Thanksgiving, I have some friends in Wisconsin, from their pictures it looks a wonderful celebration. From your question about mesh size, I believe the mesh size is 28 holes per square inch. I am not sure of what gauge wire is used tho.
Thank you for that information LampBoy. I know now one part of the equation. Would you be willing to tell me the other size mesh. Maybe the diameter and height would help me out. Good day too. 😀😀@@LampBoy3583
@@victoryfirst2878 I have just looked up the gauze sizes and I got a little mixed up. The original gauze was made from 28 mesh which had 784 holes per square inch. In 1924 in the UK it was recommended that the gauze use 20 mesh, this had 400 holes per square inch. The outer gauze size (depending on the glass size) is approximately 2 inches in diameter and 4 inches high, the inner gauze sits inside the outer gauze. I hope this helps.
Hi there can you help me I've just managed to get my hands on a protector CT 33a I can't open it and also it doesn't have a sliding wire was there any other versions of the CT 33a Many thanks Brian
@@LampBoy3583 thanks for getting back to me I think it's definitely got a magnetic lock on the top rim above the glass but I think it's seized I'm giving it a good soak with WD40 to see if I can free it. Many thanks Brian
Интересная лампа 😊
Most certainly interesting lamp fella. 😀
interesting, didn't have a clue how tall this lamp is indeed. Good job
It is a big lamp.
Great video..👍👍
I have several CT33A lamps, but as yet no high tension relighter. Would really be interested if you figure one out, please...😊👍
A guy I know used a piezo lighter from a cooker to light a Patterson lamp, don't know if that would work on a CT33A lamp?
Surprising technology for the day Lamp Boy.
What was the purpose of the double screen mesh as it seems maybe a bit overkill indesign Sir ??
Originally when the flame safety lamp was designed it only had one gauze (screen mesh). Davey and other scientists discovered that the flame from a candle would not pass through the mesh of a certain size hole. This meant that the flame would not ignite any explosive gas on the other side of the mesh. Over time and as mining regulations was updated a second gauze (mesh) was added to lamps as a kind of safety back up. In the UK the regulations stated after the end of every shift, the flame safety lamp would have to be dismantled, cleaned and inspected. The gauzes would be inspected for holes and if need be the gauze would be replaced.
Now I know something new. Would you be able to tell me the hole sizes were used in inch square sizes and screen wire diameter used. I rally like the part after each shift the lamp would be recheck for functionality
Good day and have yourself a Happy Thanksgiving from the other side of the pond. @@LampBoy3583
@@victoryfirst2878 I hope you had a great Thanksgiving, I have some friends in Wisconsin, from their pictures it looks a wonderful celebration. From your question about mesh size, I believe the mesh size is 28 holes per square inch. I am not sure of what gauge wire is used tho.
Thank you for that information LampBoy. I know now one part of the equation. Would you be willing to tell me the other size mesh. Maybe the diameter and height would help me out. Good day too. 😀😀@@LampBoy3583
@@victoryfirst2878 I have just looked up the gauze sizes and I got a little mixed up. The original gauze was made from 28 mesh which had 784 holes per square inch. In 1924 in the UK it was recommended that the gauze use 20 mesh, this had 400 holes per square inch. The outer gauze size (depending on the glass size) is approximately 2 inches in diameter and 4 inches high, the inner gauze sits inside the outer gauze. I hope this helps.
Hi there can you help me I've just managed to get my hands on a protector CT 33a I can't open it and also it doesn't have a sliding wire was there any other versions of the CT 33a
Many thanks
Brian
You might have one with a magnetic lock. If it's got a lock you will see it on the brass rim above the glass above one of the pillars.
@@LampBoy3583 thanks for getting back to me I think it's definitely got a magnetic lock on the top rim above the glass but I think it's seized I'm giving it a good soak with WD40 to see if I can free it.
Many thanks Brian
@@Brian-be1dm plenty of WD40 and patience. I think the locks on these lamps was prone to getting bunged up with dust and soot.