Optimus heating apparatus

Discussion in 'Other Models' started by optipri, Sep 9, 2019.

  1. optipri

    optipri Subscriber

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    I have not been able to find this model in any catalogue so maybe a custom version.
    I know Primus made similar in the early 1900:s.

    Bo

    DSC_0019_21.JPG DSC_0020_18.JPG DSC_0022_8.JPG DSC_0023_7.JPG
     
  2. nmp

    nmp United Kingdom Subscriber

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    I love these weird specials!
    Cheer Nick
     
  3. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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    Looks like a bath heater or similar:

    Monitor Stove

    Best Regards,
    Kerophile.
     
  4. Afterburner

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    Nice catch! :thumbup:

    Maybe that Optimus heating apparatus is about the same era? Tank cap seems like mix of old and new. Older caps have that serrated edge but no that soldered piece of brass for twisting the cap. Maybe it's from the time when they changed the type of the cap?:doh:
     
  5. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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    Hi @optipri and @Afterburner your stove/heater does indeed have a distinctive filler cap, which should help in dating it to 1930 at the latest


    From this post of a 1920s Optimus No.0 which I have:

    Optimus No. 0 mid-late 1920s

    Best Regards,
    Kerophile.
     
  6. OMC

    OMC Subscriber

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    I was curious as to size of tank and burner and text atop burner.
    I didn't comment as I had no expectation myself of finding a model # or another similar Optimus example (or Primus :oops: ).
    -------------

    I comment now as we have attempted to unravel detail re use of Optimus globe lid.
    Latest I may have found. me:
    " ...globe lid in use: "pre1924 to NLT1932". ... … this range can be back dated (fwiw I think it will be back dated). "
    thx omc
     
  7. kerophile

    kerophile United Kingdom SotM Winner Subscriber

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    Hi these Optimus No.5 stoves of Peter Watchorn gives a time sequence of filler caps.

    Flat-top filler:

    1915 Optimus No:5

    Optimus Globe sail-type filler:

    1918 Optimus No:5

    1920 Optimus No:5

    1929 circa Optimus No:5

    I do not know the basis of Peter’s dating, but he indicates that the distinctive cap with Sail upstand, and Optimus Globe was in use from at least 1918 until at least 1929...

    Best Regards,
    Kerophile.
     
    Last edited by a moderator: Sep 12, 2019
  8. Afterburner

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    @OMC Tank has about the same shape as Optimus rocket stoves. Maybe it's a small rocket stove tank, volume about 2-3 liters? Pump doesn't look like in Optimus rocket stoves. Pump looks more like pump in 'normal stoves' like #1 & #5.
     
  9. OMC

    OMC Subscriber

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    Hello Bo, You're stumped for a model or finding Optimus apparatus example of a close match.
    On that we're no closer but we now do have ONE in gallery :thumbup: with that details may emerge at some point. Thank you for posting it.
    I'm unsure re tank size or if you can share an ID for the burner?

    Thanks to all,

    I can state the obvious,
    Side stamp:
    [………….... ] Atkiebolaget Optimus
    [globe logo] …… Stockholm ……...
    [ ......….... ] .. Made in Sweden
    ------------------

    Before I joined CCS a standing opinion (I support) is in "mid 30s"
    the use of "Stockholm" ended (stamped into tanks) and
    the use of "Upplands Vasby" began, in it's place.
    ------------------

    Likewise another distinction (dating clue) we've pondered and I expect, going forward, we will determine an approx. year:
    the use of "Atkiebolaget" stamped into tanks ended,
    ------------------

    We don't have scale in OP and tank may be same as rocket stove.
    Rocket stove with "Atkiebolaget" on tank are a scarce few. FWIW:
    This 510 noting tank, pump and filler cap, may be a close match.
    This 515, even older, noting tank and pump.
    thx omc
     
    Last edited: Sep 12, 2019
  10. Afterburner

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    My mistake :oops:... I was thinking Primus rocket stoves which have large (& convenient to use) pump knobs:
    [​IMG]
     
  11. Afterburner

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    I have one Optimus 515. On side of the tank it has a globe logo and beside of the logo there is a text like in this picture:
    [​IMG]
    Model information is below globe & text.

    @Bo 's heater seems to have about the same text but without model information. (Stockholm instead of Upplands Väsby)