Gas Sounds Cable Damage Alarm (Dec, 1930)
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!
Pressurizing the cables with an inert gas to keep out moisture?
Yup. Had to have used nitrogen; it doesn’t absorb moisture.
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/… .
“Gas sounds cable damage alarm” is a hard-to-understand headline. All five words can be either nouns or verbs!
mc…
You must be great at word puzzles.
Hissing noise message breaks bell?
Vapor turbulence wire fault concern?
Petrol gurgling network offline indicator?
There is concern over the after-effects of watching a non-broadcast television program about a harbor named after a fuel.
Perfectly readable.
always happens to me in the tub