common clock question

Discussion in 'Clock Repair' started by mariosthegreat, Apr 13, 2017.

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  1. mariosthegreat

    mariosthegreat Registered User

    Jul 6, 2014
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    Can any harm happen to the teeth of wheels of a clock
    If the hour hand is moved backwards a little?
     
  2. David S

    David S Registered User
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    The short answer is that "something" can get damaged if you move the hand back. But normally it depends on where the hand is. Some clocks will state not to move the hand backwards if it is in the quadrant between 15 minutes before and 12 o'clock.

    I am sure there are other examples, and the folks here will provide more info.

    David
     
  3. JTD

    JTD Registered User
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    If we are talking of the hour hand rather than the minute hand, then on most clocks you are not likely to damage anything if you move the hour back a little.

    But it might help if you explained a little more what you are wanting to do and why and on what sort of clock.

    JTD
     
  4. roughbarked

    roughbarked Registered User

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    #4 roughbarked, Apr 13, 2017
    Last edited: Apr 13, 2017
    The most likely scenario in most clocks is that the main damage that can occur when moving the hour hand is when it may stick, you are likely to bend or break the hand itself. Most hour hands are intended to be moved a little, gently. Any resistance, then try something else.

    If it is a quartz watch there is a risk of damaging plastic wheels.
     
  5. David S

    David S Registered User
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    ok folks I missed the "hour" hand, and assumed the minute hand. So please disguard my post.

    David
     
  6. Tinker Dwight

    Tinker Dwight Registered User

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    It depends on the clock.
    If the clock is a rack and snail strike, and the hand slips
    the strikes will be out of sync.
    In general is it not recommended to turn the minute hand backwards
    one chiming and striking clocks.
    This is not always true as some talk case clocks ( grandfather clocks )
    are specifically designed to be turned backwards.
    All clocks can be turned forward with the exception that some
    can be damaged if turned past the next strike or chime while it
    is still running the previous strike or chime. In these cases it is
    always best to pause after each strike or chime to allow it to
    complete.
    Many alarm clocks should not be turned backwards.
    I don't think the hour hand is usually strong enough to strip
    teeth but I wouldn't generally recommend attempting to adjust by the
    hour hand.
    Tinker Dwight
     
  7. roughbarked

    roughbarked Registered User

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    Many alarm clocks cannot be turned backwards past the alarm hand.
     
  8. Willie X

    Willie X Registered User

    Feb 9, 2008
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    It depends on what kind of clock you are speaking of. It would be very unusual for any damage to be done to the gearing in any case. The damage is usually to levers and lifting pins. Starting around 1900, most clocks are designed so the minute hand can be turned either way. On some clocks the instruction sheet actually recommends turning the minute hand backwards to set the clock, or to sync the strike on older clocks.
    Post a photo of the movement you have and people on this list can answer your question about a your particular clock.
    Willie X
     
  9. roughbarked

    roughbarked Registered User

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    On many striking clocks the instruction does say to work the minute hand back and forth between 11:45 and 12:00 to synch the strike.
     
  10. David S

    David S Registered User
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    Do you mean the minute hand?

    David
     
  11. roughbarked

    roughbarked Registered User

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    have edited it. ;)
     
  12. David S

    David S Registered User
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    :thumb::thumb:
     
  13. Willie X

    Willie X Registered User

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    I was thinking 'minute' hand too. Willie X
     
  14. Jasons34

    Jasons34 Registered User

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    Here is,what I think the OP is getting at. You just used the minute hand to figure out how it strikes before installing the hands permanently. So the clock strikes 6 times. Ok so when he pressed on the hour hand it did not press on so the tip is perfectly at the 6 mark. So he wants to move back the hand slightly instead of pulling it off and try again. To answer that question yes you can do it. The hour hand is,just a pressure fit and will just spin on the hour cannon. The hour cannon though will not move thus no damage will be done. But on the flip side I wouldn't go doing that a lot because you'll eventually wear the hand bushing enough that it's loose
     
  15. roughbarked

    roughbarked Registered User

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    Nods. Yes this is only meant to be occasionally used.
     
  16. bangster

    bangster Super Moderator
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    Listen to Jason. :cop:
     
  17. mariosthegreat

    mariosthegreat Registered User

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    It's Gustave Becker grandfather clock
     
  18. JTD

    JTD Registered User
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    Is this the same Gustav Becker long case clock that you have already asked about in another post on this thread??

    JTD
     
  19. Jasons34

    Jasons34 Registered User

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    Bangster you have no idea how extremely picky I am about placement of the hands. For example I want the minute hand to be exactly where it's supposed to be when the clock chimes/strikes. Same thing with the hour hand. I don't want it a bit ahead nor behind.
     
  20. Tinker Dwight

    Tinker Dwight Registered User

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    Pushing the hand around will not fix the problem that MariosTheGreat describes
    in the other post. The problem could be one of two things. Either the
    snail is a little off and needs a slight adjustment or someone has worked
    on the rack tail and got the length wrong.
    One can make course adjustments, of the snail cam, by moving the
    hour wheel a tooth relative to the minute wheel. A finer adjustment
    can be done by moving the minute wheel a tooth relative to the
    center pinion.
    This should better match the snail to the strike time.
    Usually the minute wheel is held on by a clip or pin and washer.
    It can be then easily changed a tooth or so.
    The hour hand is usually pressed onto a tapered tube. It can
    be lifted slightly to loosen and easily press back down on any
    hour to match the snail.
    If someone has modified the rack tails length it may need to
    be restored to the original length, if moving the minute wheel
    teeth engagement doesn't solve the problem.
    I guess the question is, has the other problem been solved yet?
    Tinker Dwight
     
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