Rex stove c.1895

Discussion in 'Other brands' started by igh371, May 27, 2019.

  1. igh371

    igh371 SotM Winner Subscriber

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    DSC08561.JPG
    This Rex stove is not entirely new to CCS but has not had a gallery entry of its own until now. It has the tank top open/closed lever position indicators only in Cyrillic alphabet in abbreviated Russian:
    DSC08564.JPG DSC08565.JPG (омкр /закр - closed) DSC08566.JPG

    This single language marking coupled with the 2 lever combination on the bottom of the tank seem to suggest it could be earlier than those with multiple languages and/or only a single lever. The provenance is show as 'AKTIEBOLAGET PETROLEUMKÖKET REX STOCKHOLM SWEDEN', rather than 'Aktiebol Mekanikus' as some examples are. Does this relate to date or to presentation for specific markets?
    DSC08562.JPG
    DSC08567.JPG the male thread filler cap/ female tank boss is an interesting and unusual combination, but clearly shown in the patent diagrams (which are available to view here).

    The stove had long since lost both its original burner top plate and also the now exceedingly rare original cast trivet:
    DSC02863 (2).JPG
    Luckily a No.4 type Primus trivet was found to be an excellent fit, and a new top plate was cut and ground, made from some 3mm steel plate:
    DSC08563.JPG

    Even more fortuitously the twisted and very fragile looking burner proved to be serviceable once the blocked jet was drilled out with a 0.23mm finger drill. But getting fired up revealed some unexpected idiosyncrasies in the design. The first was that the tube which extends down into the tank from the filler (see the early patent drawings) makes it all but impossible to fill the tank beyond about ½ way without it back-flowing all over the bench! The second is that, once heated up and pressurised, there does not seem to be any way of depressurising the tank other than simply letting it cool down again! Releasing the filler cap, because of the said problematic internal filler tube, only results in a rapid spewing out of a dramatic quantity of pressurised fuel, unless the stove has been run almost empty:-s Maybe this is why the later dated drawings do not seem to show the tube anymore???:doh:

    All of this said, with a little experimentation, is does seem to be possible to achieve some reasonable measure of control from absolutely flat-out to a tolerable simmer, though not as easily as with a 'normal' stove. As a cheap basic 'boiling stove', as Hjorth marketed their equivalent, fair enough, but not really a rival to the Primus!

    DSC08577.JPG DSC08587.JPG DSC08568.JPG DSC08575.JPG

    DSC08569.JPG




    @optipri @Thumper
     
    Last edited: May 27, 2019
  2. z1ulike

    z1ulike United States SotM Winner Subscriber

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    That's a rare survivor nicely presented with an impressive amount of research. Thanks for going to the effort of sharing it. I love these oldies.

    Ben
     
  3. MrAlexxx

    MrAlexxx SotM Winner Subscriber

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    You have some of the best oldies! That's real cool.

    Alex
     
  4. gieorgijewski

    gieorgijewski Subscriber

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    Again You Do That...
    :)
     
  5. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

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    @igh371
    Nice one Ian and a brilliant discourse on the fuelling characteristics and other details.

    John
     
  6. Tony Press

    Tony Press Australia Subscriber

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    Nice work, Ian. :thumbup:

    How are the two bottom levers operated?

    Tony

    @igh371
     
  7. igh371

    igh371 SotM Winner Subscriber

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    Hi Tony,
    The short inner lever is a sort of fixed ring spanner used to tighten up the spindle assembly. This was dropped from later versions of the Rex. The big lever opens and closes an internal valve to allow fuel up into the burner once the stove has self-pressurised through priming. Anticlockwise to shut off, clockwise to open.
    Ian:thumbup:

    (There is useful further discussion here and here)


    @Tony Press
     
    Last edited: May 27, 2019
  8. Tony Press

    Tony Press Australia Subscriber

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    Thanks, Ian.

    A very interesting design, with much that can go awry. Lucky its kerosene.

    Cheers

    Tony