Open Escapement Pallets

Discussion in 'Clock Repair' started by Fitzclan, Aug 11, 2017.

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  1. Fitzclan

    Fitzclan Registered User

    Jul 20, 2014
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    Having a heck of a time with these pallets. Can't get them to budge. Tried alcohol, then heat. No dice. I can't understand how they got misaligned in the first place because when I laid the mvt down to disassemble, it started to run, so they must have been right.
    They are steel. Are these held in place differently than ruby type pallets? I don't want to break them off.
    Any guidance appreciated.[​IMG][​IMG]
     
  2. roughbarked

    roughbarked Registered User

    Dec 2, 2016
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    You'll need a press to push them out.
     
  3. shimmystep

    shimmystep Registered User
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    Ordinarily one would fit these with shellac, same as with the ruby substitute pallets. Do you think that they are a hard interference fit? If they glued, then a soak over night in acetone may help. Any sign of solder?
    As said, you may need to rig a press, or use a staking set to tap them out from back to front.

    Alternatively, are they set up okay? do they need to come out??
     
  4. Fitzclan

    Fitzclan Registered User

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    Yeah Shim, I think they will have to come out because they won't budge in any direction. Maybe a claw foot type hand puller would do the trick?
    I thought they would have been glued with shellac, hence the alcohol but I think your idea of soaking in acetone first may be the way to go.
    So they pull out from the back I guess, or as rough said pressed out.
    How about throwing the whole thing into the ultra sonic?
    I've never set these up in reality, but these seem like they would be easier than the ruby type because of the backing.
    I think I'll soak in acetone and go from there. Thanks guys. Let you know how things turn out.
     
  5. Willie X

    Willie X Registered User

    Feb 9, 2008
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    If they are that tight they shouldn't be out of adjustment. Maybe one of the arms got bent. That could have happened accidentally.
    Willie X
     
  6. Tinker Dwight

    Tinker Dwight Registered User

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    It is possible that someone stuck them in with JB-weld.
    It is a form of epoxy. It is extremely tough stuff. You might
    type some epoxy solvents.
    JB-weld is gray in color.
    I'd drill a hole in a small block of iron, big enough to clear the pallet.
    Heat the block up to near red hot. Then use a press to push it loose.
    Once it moves, you should be able to remove it without breaking
    anything.
    Tinker Dwight
     
  7. Willie X

    Willie X Registered User

    Feb 9, 2008
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    I don't understand the rush to remove them:???:
    Willie X
     
  8. Tinker Dwight

    Tinker Dwight Registered User

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    I think he said they are not aligned properly.
    It is not easy to tell without the escapement wheel in the
    picture.
    Tinker Dwight
     
  9. shutterbug

    shutterbug Moderator
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    Oct 19, 2005
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    Heat should work on almost any kind of glue, including LocTite. How much heat did you apply?
     
  10. roughbarked

    roughbarked Registered User

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    #10 roughbarked, Aug 12, 2017
    Last edited: Aug 12, 2017
    I'm with both you and Tinker Dwight below.


    As with adjustment, surely you only want to rotate rather than remove.

    - - - Updated - - -

    As with heat, glues don't require much. It is more about the speed of the operation.

    From what has been said and I'll beg you to read all. Why are they deemed to be out of adjustment?
     
  11. Fitzclan

    Fitzclan Registered User

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    Sorry guys, haven't been able to get back to it today.
    I was able to get one pallet to move. The other one seems set in stone. Don't really want to remove them but if forced too much I think it will snap.
    the problem is that the ew can't advance because the left (entrance?) pallet lands on the flat part of the ew tooth instead of the curved part, locking the ew.
    Probably not explaining myself very well but the left pallet needs to be turned so that it catches the ew on the left side of the tooth.
    This is my first time to deal with this type of pallet alignment. While I think I understand the concept, it may sound easier than it is to get them right.
    I assume that the part that holds the pallets should be centered or level when aligning the pallet flats with the ew pivot?
     
  12. Willie X

    Willie X Registered User

    Feb 9, 2008
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    The escape wheel teeth are supposed to always drop onto the round face of each pallet, a little short of the highest point of the round face, 40% is a good rule of thumb. These escapements are hard to make right once they are screwed up. A couple of good photos, with everything in place might help the listers to help you.
    Willie X
     
  13. kinsler33

    kinsler33 Registered User

    Aug 17, 2014
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    I presume that you've got the escape wheel rotating in the correct direction.

    I mention this only because I once worked on an American clock with a steel-pallet Brocot escapement like this--a Waterbury, I think. Now, one odd feature of this clock is that its pivot holes were drilled so that the plates could be used with a conventional internal recoil escapement as well as with the Brocot escapement that I had. This meant that there was more than one way to install the wheels of the time train such that they still meshed, which just about drove me nuts until I realized what was going on.

    It is quite possible to assemble some clocks such that they try to run backward.

    M Kinsler
     
  14. shutterbug

    shutterbug Moderator
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    A pic of the two together with direction of rotation noted would help. I can't visualize what you mean here.
     
  15. leeinv66

    leeinv66 Super Moderator
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    Mar 31, 2005
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    Is this out of an American movement? If that is the case, these are a press fit as roughbarked said in post #2. They would be held in by shellac if it was French. Which I do not believe it is.
     
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