Svea No.5 c.1909/10(?)

Discussion in 'Svea No:5' started by igh371, Jul 28, 2018.

  1. igh371

    igh371 SotM Winner Subscriber

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    DSC07406.JPG
    At last a genuine original No.5 silent tube burner complete with the original inner and outer burner caps. What a relief not to have to fabricate special replacement caps for once!
    This stove would appear to date from just a very little later than this other, externally identical, example. The key difference is hidden from view inside the pump tube, it is the pump rod. The pump rod is the early Svea version of the modern standard assembly, i.e. without the fixed back-stop behind the cup carrier. Identifiably an early Svea example of this rod assembly because it still has the both the Nybergs Patent cap and the signature Svea pump carrier and end nut both with all round components and no hex flats to aid servicing!

    DSC07403.JPG DSC07404.JPG DSC07410.JPG DSC07411.JPG DSC07412.JPG DSC07408.JPG DSC07416.JPG DSC07417.JPG DSC07407.JPG DSC07409.JPG DSC07413.JPG

    First firing after full service and many years of disuse:
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    And barely 10 minutes later:
    DSC07399.JPG

    Remarkably quiet in action, but still boiled a full Simplex kettle from cold in what seemed next to no time at all:thumbup:
     
    Last edited: Jul 28, 2018
  2. Tony Press

    Tony Press Australia Subscriber

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    @igh371

    Wow! That is a very good find.

    It’s a great looking stove.

    Cheers

    Tony
     
  3. HunterStovie

    HunterStovie United States Subscriber

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    @igh371

    Very interesting burner arrangement and priming cup.

    Nice find.

    Mike
     
  4. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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    Hi Ian, what a wonderful early stove, nicely presented.

    I am also interested in the spirit cup, and wonder whether it originally had a “shroud plate” self igniter:

    https://classiccampstoves.com/threads/early-optimus-burner.7184/#post-68287

    Your photo of the spirit cap and its dimple also shows a brass rivet on the bridge in the spirit cup. It seems possible/likely that this might have attached the shroud plate at one time.

    What do you think?

    Best Regards,
    George.
     
  5. igh371

    igh371 SotM Winner Subscriber

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    @kerophile, yes George, the spirit cup would originally have had a vertical flame leader held by that single rivet, but which is now long-since lost. There is a good photo of a nicely cleaned up original Svea silent tube-burner spirit cup in this other gallery post. The complete assembly illustrated there shows clearly that the form of the flame leader used on these tube burners was different to those used on later ('normal') Svea silent burners. Notice how the leader top had a flattened dome shape with a central notch cut out, quite unlike the later spear pointed design.

    Two gallery entries which show different Svea models but sharing the same dating features as this one can be found here and here.

    Ian:thumbup:
     
  6. igh371

    igh371 SotM Winner Subscriber

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    Interested to discover that, although this tubular silent burner No.5 stove appears in the 1908 Svea catalogue, the patent that Max Sievert and CR Nyberg took out for the design wasn't registered until November 1909 (Swedish Patent 29975).
    PATENT SE29975 DIGRAM.jpg



    @OMC
     
    Last edited: Mar 29, 2021
  7. Doc Mark

    Doc Mark SotM Winner Subscriber

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    Hi, Ian, (@igh371 ),

    I love these older SVEA Sievert stoves!! Not only a work of art, in many ways, but also wonderfully designed and functioning stoves!! The engraving on these old SVEA stoves is quite simply the best I've ever seen! Thank you for sharing this lovely stove, and thank you for all the great info you've shared here on these guys, too!! MUCH appreciated on both counts, my friend!! What a great find for you!! Take care, and God Bless!

    Every Good Wish,
    Doc
     
  8. Ian

    Ian Subscriber

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    Wonderful stove. How did they bend the tubing in that burner? :-k