Recent content by Michael Davies

  1. M

    Atmos Clock stops when the weather is hot.

    This is almost certainly a sticking coil in the mainspring. You could try removing the bellows cover and the movement (don't let the spring run down too quickly) and then wind and unwind the main spring fully three-or-four times to release "stiction". This has worked for me in the past...
  2. M

    Atmos clock stopping occasionally - weather related or?

    I have to say that the chain position indicates to me that the bellows is fine and doing its job properly. The stopping symptoms are very representative of a sticking coil or two in the winding spring. This is sometimes fixable by removing the movement and bellows case and winding down/winding...
  3. M

    Atmos Clock Cases

    Many thanks John for taking the time to give your valuable comments. It was also my view that these cases were brass albeit finished unusually with two different surfaces. I shall inform my fellow collector that at least two of us are pretty sure the case material here is brass! Michael Davies.
  4. M

    Atmos Clock Cases

    Anybody have any ideas on this please - or suggestions where I might get appropriate information? Hope somebody can come up with something! Michael Davies.
  5. M

    Atmos Clock Cases

    I have a problem deciding on the nature of the base metal and finish on two of my Atmos clocks; the clocks in question are an Atmos II number 22787 (1949) and a Cal 528/6 number 438239 (1975). The framework of both is practically the same except of course the former case is side studded and...
  6. M

    Atmos pendulum locking.

    Thanks all, and new_hampster particularly for giving me the detail I needed to sort this out. I dismantled both the 340xxx (the "wrong" one) and the 440xxx, and took the locking mechanisms apart. In the 340xxx the set-screw went into a drilled hole in the locking shaft, while in the 440 there...
  7. M

    Atmos pendulum locking.

    Interesting! I have another 528-8 with "normal" locking left-to-right (number 440xxx); both mine have 15 jewels. The "abnormal" one has a square dial, the "normal" one a round dial - aniy significance I wonder? I will be dismantling the "abnormal" one shortly and I will report on whether I...
  8. M

    Atmos pendulum locking.

    A quote from a reliable source on Atmos clocks says "All locking levers must be pushed from left to right in order to lock the pendulum". I have recently acquired an Atmos 528-8 (340xxx) which locks from right to left i.e. running position is with lock lever fixed in right side "slot"; the...
  9. M

    IDing Atmos Model and year

    John Hubby recently asked me on another thread to post pictures of my Atmos II. Here they are - Frame No 21887; Movement No 22787. I would guess 1948-ish; is this a reasonable guess? Michael Davies
  10. M

    Post Your Gustav Becker 400-Day Clocks Here

    Re: incomplete Beckers;help please Going through my Spares Box I have found an incomplete GB movement (with the adjustable No8 overhead suspension, but no anchor/escape wheel, and missing guard). This has no GB logos or identification of any sort so was presumably made after the Junghans...
  11. M

    Atmos Case Markings

    Two of my earlier Atmos clocks (II - movement number 21887; 519 - number 26400) have the "logo" INCA 5090 impressed into the inside of the rear left angle of the bottom case frame. I have been unable to discover what this mark means - possibly a case type or material or even third party...
  12. M

    Post Your Gustav Becker 400-Day Clocks Here

    Re: Gustav Becker curious crown Really good deciphering John, but "Col. Sergt" stands for "Colour Sergeant" not "Colonel Sergeant". Michael Davies.
  13. M

    Atmos Caliber 519 Running Very Slow

    Do not try to thin or adjust the spring. Timesavers after-market springs are fine (genuine springs are not available from JLC), but usually cause Atmos clocks to run slow. Solution is to remove weights from beneath pendulum (only in pairs from both sides equally), thinnest (lightest) first...
  14. M

    Kundo electro - mechanical clock running too fast

    Just noticed this thread. The simple answer is to adjust the pendulum length; the mechanism is built-in already. The pendulum bar is attached to the hanging rod by a pointed nut below and a knurled "winder" above with an unthreaded fixing block between. This means the pendulum bar can be ajusted...
  15. M

    Kundo Electromagnetic going slow !

    Just noticed this thread. The simple answer is to adjust the pendulum length as Ivan suggests, but the mechanism is built-in already. The pendulum bar is attached to the hanging rod by a pointed nut below and a knurled "winder" above with an unthreaded fixing block between. This means the...

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