Optimus 100 from 1920s/30s

Discussion in 'Optimus No:100' started by kerophile, Jan 26, 2007.

  1. kerophile

    kerophile United Kingdom SotM Winner Subscriber

    Offline
    Joined:
    Sep 23, 2004
    Messages:
    11,082
    Location:
    Far North of Scotland
    Hi, here are some photographs I took today, of an early Optimus 100 stove. This is a collapsible, paraffin stove with a capacity of 1.75 pints.

    1355086124-DSCN0009_edited-2.jpg

    Unfortunately I do not have the cast iron pan-ring, nor optional silent damper for this stove.

    1355086114-DSCN0010_edited-4.jpg 1355086131-DSCN0011_edited-2.jpg 1355086140-DSCN0012_edited-4.jpg

    This early model of the No. 100, like the early Optimus 45 has the air-release screw mounted on top of the tank, rather than on the filler nozzle, as in later designs.

    1355086148-DSCN0016_edited-2.jpg

    The engraving on the tank is excellent on these early stoves.

    1355086156-DSCN0017_edited-3.jpg 1355086164-DSCN0018_edited-1.jpg

    I guess that 40 years could separate this Optimus 100 stove from the one I showed in the earlier post today.

    Here, are some images of an early Optimus 100 stove with a Roarer burner plate only.

    1355086175-P1000516_edited_opt.jpg 1355086185-P1000515_edited_opt.jpg 1355086194-P1000512_edited_opt.jpg

    It is a great pity that Optimus did not date code their stoves. Anyone any idea of the approximate date of this stove?

    Regards,
    Kerophile
     
    Last edited by a moderator: Jun 27, 2015
  2. DougR

    Offline
    Joined:
    Nov 2, 2005
    Messages:
    1,041
    How do you date an early Optimus? I don't know of any code letters or marks.
     
  3. kerophile

    kerophile United Kingdom SotM Winner Subscriber

    Offline
    Joined:
    Sep 23, 2004
    Messages:
    11,082
    Location:
    Far North of Scotland
    Hi Doug, Alas, I know of no date-codes or other marking which would allow us to get the year of manufacture of Optimus stoves. You occasionally see single letters stamped on an Optimus stove component but I have no idea of their original purpose.

    We are reduced to close examination of old, dated catalogues to follow the small design changes which took place as the stoves evolved. Even this is dangerous as the catalogues sometimes used old illustrations, presumably to save time or the cost of making a new printing block.

    I also examine photos on CCS and the Dutch Stove Collectors sites, and from friends,for comparisons.
    I am currently in correspondence with Exeter Yak and Bryan Miller to try to establish the timeline and dating for Optimus 00 stoves. Bryan has already done a great job on dating Optimus 96s.

    Best Regards,
    George
     
  4. kerophile

    kerophile United Kingdom SotM Winner Subscriber

    Offline
    Joined:
    Sep 23, 2004
    Messages:
    11,082
    Location:
    Far North of Scotland
    Hi, here are a few additional photos of the Early Optimus No.100. These show the tank-top markings and those on the filler cap and tank base.

    Identification of significant features and tank markings, and how they change over time, offers some hope of establishing a timeline for Optimus stoves:

    1411636922-P1010195.jpg 1411636906-Op.100-early.Tank-markings..jpg 1411636896-Filler-cap-Op.100.jpg 1411636931-Tank-base-marking-Op.100-ea.jpg

    Best Regards,
    Kerophile.
     
    Last edited by a moderator: Jun 27, 2015
  5. Tony Press

    Tony Press Australia Subscriber

    Online
    Joined:
    Jun 8, 2013
    Messages:
    5,632
    Location:
    Stinkpot Bay, Howden, Tasmania, Australia
    I like the release valve set up. I've not seen that before.