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V8Ian
12th February 2024, 12:11 PM
Kero, metho or 91ULP?
188884
How does one safely use such a device?
Obviously the tank has to be pressurized, with the built in pump on the right hand side.
Is the threaded valve on the filler neck, to relieve pressure thus extinguishind the flame? Is it also a regulator?
It's a Swedish made Primus, anyone care to date the item?

p38arover
12th February 2024, 01:16 PM
We had them for years (in the 50s and 60s) before we got gas stoves. Kero in the tank, metho in the ring around the burner.

Light the metho to preheat the burner. When the metho has nearly burned out, close the valve and pump the tank to pressurise it to allow kero to vapourise and light.

If it hasn’t been used for a while, you might need a pricker for the jet. It’s a short piece of thin steel (?) wire held at a right angle to a thin sheet metal handle. Used to clear the jet. See PRIMUS STOVE JET PRICKER | tilleylampsandstoves (https://www.tilleylampsandstoves.com/product-page/primus-stove-jet-pricker)

Much the same on my Coleman stove except it can use Coleman fuel, white sprit, or unleaded petrol. With a change of jet, it can use kero. I use white spirit.

I’m surprised you’ve never used a Primus kero stove.

p38arover
12th February 2024, 01:25 PM
https://youtu.be/jhG41ubhxX4'si=maeeieS6P2S0ZiFd

V8Ian
12th February 2024, 01:27 PM
Thanks Ron, in Scouts we just dug a pit and burned wood.

p38arover
12th February 2024, 01:46 PM
Dad’s had the silent burners.
188885

I think ours had a flame adjustment valve under the burner.

V8Ian
12th February 2024, 03:47 PM
https://youtu.be/jhG41ubhxX4'si=maeeieS6P2S0ZiFd
That's a good YouTube link, Ron. Answered all my questions. Thanks.

vnx205
13th February 2024, 09:51 AM
.... ....

If it hasn’t been used for a while, you might need a pricker for the jet. It’s a short piece of thin steel (?) wire held at a right angle to a thin sheet metal handle. Used to clear the jet. See PRIMUS STOVE JET PRICKER | tilleylampsandstoves (https://www.tilleylampsandstoves.com/product-page/primus-stove-jet-pricker)
.... ....
.

I was horrified to see the exorbitant price of a primus pricker.

I'm sure I read somewhere that back when they were common, that a primus pricker was about the last item that could be bought for a farthing. For the youngsters, that was one quarter of a penny.

My father's main soldering iron worked in exactly the same way.

p38arover
13th February 2024, 02:27 PM
My grandfather had a Primus blowtorch with a big solid copper soldering iron that sat in the flame.

188901

Dad had a 3.3 volt Scope soldering iron that used a transformer. I have the same type of Scope iron but it has a long power lead that allows it to run from a 12 volt car battery.

188902

JDNSW
13th February 2024, 03:25 PM
They came in two forms - the Scope soldering iron and the Miniscope small soldering iron. I have both. They also produced an electric spark engraving tool, that ran off the same transformer, and I also have one of them.

p38arover
13th February 2024, 04:31 PM
Dad had the Vibroscope engraving tool, too. Dunno what happened to it or the Scope iron and transformer.

188903

Scope soldering iron - Wikipedia (https://en.wikipedia.org/wiki/Scope_soldering_iron#:~:text=The%20original%20manu facturer%2C%20Scope%20Laboratories,journey%20to%20 Australia%20in%201948).

Homestar
19th February 2024, 12:42 PM
My grandfather had a Primus blowtorch with a big solid copper soldering iron that sat in the flame.

188901

Dad had a 3.3 volt Scope soldering iron that used a transformer. I have the same type of Scope iron but it has a long power lead that allows it to run from a 12 volt car battery.

188902

I've still got the Scope iron I made as an Apprentice in the SEC Training Annex. Bakelite housing using a standard scope barrel and tip but all custom apart from that. Even wound the transformer it runs from. I might dig it out - haven't used it in years. Not even sure if you can get Scope parts any more?

Tins
19th February 2024, 01:02 PM
Possibly Scope in name only, but... (https://www.wiltronics.com.au/product-category/scope-soldering-iron-parts/)

BradC
19th February 2024, 03:15 PM
Not even sure if you can get Scope parts any more?

Absolutely. I have an 80's miniscope. I bought dad a replacement bakelite superscope, replacement barrel for the miniscope and a set of spare tips & carbons to replace the supescope I broke when I was a lot younger.

Scope Soldering Irons & Stations (https://wbtools.com.au/products/soldering-equipment/scope-soldering-irons-stations.html)