Corking

Discussion in 'Chronometers' started by Paul Regan, Jan 8, 2019.

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  1. Paul Regan

    Paul Regan Registered User

    Mar 4, 2003
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    Is it best to cork a chronometer balance at the neutral point?
     
  2. gmorse

    gmorse Registered User
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    Jan 7, 2011
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    Hi Paul,

    From my limited experience I think corking at the crossings is more mechanically sound. Less chance of distorting a rim that way.

    Regards,

    Graham
     
  3. Paul Regan

    Paul Regan Registered User

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    Hi Graham,
    That seems like wise advice. Would that be with the balance manually stopped at a neutral point in its normal oscillations? Assuming also that there is power to the train.
    Paul
     
  4. Omexa

    Omexa Registered User
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    Hi, over the years I have posted and received over a 1000 Pocket Watches and movements; none of them were Corked; none of them had damaged Balance Pivots or any other problems. There were some Chronometers with heavy Balances. Regards Ray
     
  5. Kinpol

    Kinpol Registered User

    Aug 31, 2010
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    The chronometer's balance must be corked... Will you pay xxxx$ for repair of the detent spring or unlocking or impulse jewel?
    regards
    Krzysztof
     
  6. Omexa

    Omexa Registered User
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    #6 Omexa, May 12, 2019
    Last edited: May 12, 2019
    Well I have never had any problems. Having worked in the Marine Industry for a long time, the knocks that a Chronometer gets from rough weather at Sea would be a lot more than in the Post. Fishing Boats in Tasmania 40 years ago were in some cases using the good old Chronometer. Regards Ray
     
  7. Tom McIntyre

    Tom McIntyre Technical Admin
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    Ray, I think you may underestimate the roughness of the handling that packages get in the mail. In some cases boxes are thrown 15 feet or more into a bin. With adequate padding, a pocket watch is unlikely to be damaged, but a chronometer has a very heavy balance compared to the diameter of its pivots. Also, a shock could release the escape wheel with the possibility of a broken locking jewel which is often a disaster.

    I have received chronometers in the mail that were foolishly shipped with the tub in the gimbals which can also lead to a lot of gross damage to the tub, gimbals and box.
     
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  8. Omexa

    Omexa Registered User
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    Hi Tom, I can understand what you are saying, but I have been in fishing Boats over 60 feet long and being hit by really large waves in the Ocean South of Tasmania and you end up bruised and battered and the good old Chronometer kept going; that is what they are made for. The shock would have been 5 times the shock of being chucked about in transit. One time the side of the Wheelhouse was pushed in by a wave. I did it for 7 years and I am glad I am in the Territory and not back on the Water. Regards Ray

    South of Tasmania.jpg
     
  9. Omexa

    Omexa Registered User
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    A friend of mine in Darwin has purchased a "Hole in the Water", to throw money into. It is a 45 feet Boat and is way under powered and in the 8 knots (a bit over 9mph) Tide has trouble going anywhere. He has tried in vain to get me interested in helping him. It is called the "Jolly Roger". Regards Ray
     
  10. novicetimekeeper

    novicetimekeeper Registered User

    Jul 26, 2015
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    I, too, have been at sea. However a marine chronometer will only experience the battering the crew receive if it is not secured, whereas it can be thrown about or dropped by a courier. I don't doubt that with adequate packing the risk can be minimised, deformation is a function of time as Professor Shaw used to say.
     
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  11. kevin h

    kevin h Registered User

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    At one time , and maybe today , UPS timed the men on how fast they can load and unload a truck - so boxes went flying through the air !
     
  12. Kinpol

    Kinpol Registered User

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    One parcel with uncorked chronometer... surely...:p
     

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