Gas Sounds Cable Damage Alarm (Dec, 1930)
Filed under: General — @ 10:33 pm
Source: Modern Mechanix ( More articles from this issue )
Issue: Dec, 1930
| Buy on Ebay
Source: Modern Mechanix ( More articles from this issue )
Issue: Dec, 1930
| Buy on Ebay
Gas Sounds Cable Damage Alarm
THE Pacific Telegraph and Telephone company has recently put into use a method to locate cable troubles which uses gas as the detecting agency. Pressure of escaping gas, which has been pumped into the cable, sounds an alarm which sends a trouble shooter on his way to repair the damage.
I am frequently alarmed by the sound of escaping gas. Oops, there it went again!
Comment by /\/\ike — March 20, 2009 @ 9:29 am
Pressurizing the cables with an inert gas to keep out moisture?
Comment by jayessell — March 20, 2009 @ 3:18 pm
Yup. Had to have used nitrogen; it doesn’t absorb moisture.
Comment by David Moisan — March 20, 2009 @ 11:47 pm
Actually, this method is still in use today. Nitrogen bottles aren’t as common as air compressors now that cables are insulated with polyethylene instead of paper. There’s a whole introduction to the modern incarnation of this technology at http://www.airtalk.com/primer.shtml .
Comment by EngineerZ — March 22, 2009 @ 9:50 am
“Gas sounds cable damage alarm” is a hard-to-understand headline. All five words can be either nouns or verbs!
Comment by mc — March 22, 2009 @ 10:05 am
mc…
You must be great at word puzzles.
Hissing noise message breaks bell?
Vapor turbulence wire fault concern?
Petrol gurgling network offline indicator?
Comment by jayessell — March 22, 2009 @ 10:46 am
There is concern over the after-effects of watching a non-broadcast television program about a harbor named after a fuel.
Perfectly readable.
Comment by Toronto — March 22, 2009 @ 1:03 pm
always happens to me in the tub
Comment by fred — March 24, 2009 @ 6:51 am