Optimus 1s

Discussion in 'Optimus No:1(inc. S & J)' started by Francisc Masec, Oct 10, 2021.

  1. Francisc Masec

    Francisc Masec Sweden Subscriber

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    Hi! I bought this stove because if the burner. When i received it it confirms my hope that is a heater burner. It is possible that it was a heater stove? The legs are in one piece, not removable like the other 1s i have. The tank lock is a Radius. There is a "U" on the pump knob. There are 7 languages on the side.
    What are your thoughts?
    Best regards,
    Francisc IMG_20211010_170034.jpg IMG_20211010_170045.jpg IMG_20211010_170054.jpg IMG_20211010_170100.jpg IMG_20211010_170109.jpg IMG_20211010_170114.jpg IMG_20211010_170129.jpg IMG_20211010_170140.jpg IMG_20211010_170148.jpg IMG_20211010_170158.jpg IMG_20211010_170234.jpg
     
  2. abbahco1

    abbahco1 Subscriber

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    It's an Optimus 1 S from the 1920s, I'd say 1925 - 1928. Originally it had a roarer burner and the famous "Optimus" globe filler cap. It was not specifically a stove heater, though there was an attachment that could have been fitted to it. It has been fitted with a silent burner (now missing the burner caps), also of the period 1925-1928, so it might have simply been installed from the very beginning (this was common: the burners were all interchangeable between 1 & 5 stoves). I'd say that the pump chamber cap is also perhaps not original to the stove. Peter
     
  3. Francisc Masec

    Francisc Masec Sweden Subscriber

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    The other silent burners what i have on the 1 and 5 stoves is about 68mm diam. This is 74, the same as the burner on the 1S heater and the 703 heater.
    Whas the first silent burners bigger?
    /Francisc
     
  4. abbahco1

    abbahco1 Subscriber

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    Not sure: but you can always take a look at the various catalogues on the Stove Reference Library portion of this site to see how they changed over the decades. The earlier ones had a wider, more flared dish. P