Primus 1001 S29
I finally got some time to fettle with Primus 1001. It came covered with black goo all around, also inside the tank. That probably made it quite cheap to buy.
This lantern is marked S29 so it comes from year 1928.
After acetone bath and some elbow grease it cleaned nicely but it took me quite some time to remove all "fixes" someone did to it.
People's ingenuity amazes me - toilet paper, if you didn't know, can substitute almost any sealer... my lamp even had it instead of graphite box seal (I suppose you should not try that on Coleman petrol lamp!).
The lamp has original mica globe - my first such globe.
Seeing how someone "fettled" with toilet paper I was worried that mica delaminations in few places were fixed with scotch tape.
Luckily not!
I could not wait for double-tied mantles from Fogas so I modified Optimus 350 single-tie mantle to fit.
Pricker needle and jet are the same as used on Primus 1020.
I very much like this system. Very easy to fettle and one can save burned-in mantle if jet needs to be replaced etc.
Below is the heart of the system. Primus changed the burner on these lamps in 30’s to slightly more efficient construction. Mine here is the first version.
The lamp started OK and is going stable.
Mica globe has seen better days.
I plan to make my own mica reproduction if I don't find a glass globe fitting this huge lamp.
Generic shade from Fogas fits this lamp nicely, making it even more magnificent.
I took Nils' advice here and fettled more with Primus 1001. My experience with replacement jets is that their quality can vary quite much from piece to piece.
When fettling with Optimus'es I've learned to order 2x more jets than I really need. It turnes out that minor differences in jet hole size can be significant for some lanterns.
As Nils says - 1001 is sensitive to worn jets so I investigated that further.
Replacing brand-new jet with old, Primus 1020's jet laying in spare parts box has proven to make huge difference.
The lantern is much brighter (with the same mantle, home-made) and I could pump it pretty much as much as I wanted without fireballs.
It is now proudly lighting my workshop!