High Resolution cad/cam and video animation

Discussion in 'European & Other Pocket Watches' started by Tom McIntyre, Jul 31, 2018.

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  1. Tom McIntyre

    Tom McIntyre Technical Admin
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    John Redfern made a presentation at the Longitude Symposium in the 90's showing the dynamics of various escapements. He has continued to develop the technology and has this very interesting presentation of the chronometer escapement in a pocket watch.

    I got to thinking about this again when we were discussing the duplex escapement and its variations. As you can see from the video at this link one can get a much richer view with John's cad/cam and video techniques than can be gotten from simple drawing animation.

    John's tools also include the ability to map physical parameters such as instantaneous friction and inertia into false colors to be applied to the animation portions and even the video segments. Those techniques are not included in this animation, which is his sample/introduction page.

    Animation and Macro Filming for History and Technology - Specialising in Clocks and Watches | Redfern Animation
     
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  2. gmorse

    gmorse Registered User
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    Hi Tom,

    Thanks for posting this, John Redfern is a remarkably talented man. That chronometer emulation is something to put on repeat and look at over and over again.

    Regards,

    Graham
     
  3. 12V6GT

    12V6GT Registered User
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    Yes Tom, thank you so much for posting this! I've just never seen anything so well done as this video before. Very, very, impressive and huge shout out to John Redfern for sharing this with us all! What pure joy to see this! Thank you so much everybody!
     
  4. Tom McIntyre

    Tom McIntyre Technical Admin
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    He does this for his living, of course. I have been wondering what it would take to have him do a full set of similar animations for all the various clock and watch escapements similar to Volker Vyskocil's catalog but using Redfern's techniques. His slow motion photography and precision overlay setup is pretty impressive also

    Some of his other animations are at the Patek Phillipe Museum as he mentions on his site under projects. I have not been able to figure out Patek's web site to find them.
     
  5. Tom McIntyre

    Tom McIntyre Technical Admin
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    #5 Tom McIntyre, Jul 31, 2018
    Last edited: Jul 31, 2018
    Here is his short grasshopper. :)

    2006: John Harrison Grasshopper Escapement | Redfern Animation

    and here is the first escapement he did, also short.

    1992: The first animation of a watch escapement | Redfern Animation

    here is the simple Arnold view
    1993: Arnold & Earnshaw Escapements at the Royal Society | Redfern Animation

    For our clock friends here is the Santa Barbara California Courthouse Clock we saw during the For All Time Symposium there (the video and the clock). NAWCC Chapter 190 and the courthouse preservation group were involved in getting this done.

    2013: Santa Barbara Courthouse Clock | Redfern Animation
     
  6. Tom McIntyre

    Tom McIntyre Technical Admin
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    Keith R... likes this.
  7. Omexa

    Omexa Registered User
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    Hi. I am sending this from my Hospital bed. I am glad Tom looked into this subject. Regards Ray
     
  8. Tom McIntyre

    Tom McIntyre Technical Admin
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    What are you doing back in hospital, you were supposed to be well.
     
  9. Omexa

    Omexa Registered User
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    Hi Tom BLOCKED BOWEL again. The Hospital have now found the cause the bowel has narrowed where the big bowel joins the small intestine. Very painful. Regards Ray
     
  10. Omexa

    Omexa Registered User
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    Blocked bowel very painful. The Hospital have found a narrowing of the bowel where the big bowel joins the small intestine. Possibly infection. Regards Ray
     
  11. John Matthews

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    Hi Ray - best wishes and wishing you a speedy recovery.

    John
     
  12. gmorse

    gmorse Registered User
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    Here here!
     
  13. Tom McIntyre

    Tom McIntyre Technical Admin
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    Get well Ray. We need you.
     
  14. Benjamin E.

    Benjamin E. Registered User
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    And to think there's HD footage of a Mudge chronometer! The things you'd never imagine you would get to see...
    This is a rather general question, but on what occasions do these unique pieces run? It can't be very often for obvious reasons, but it does happen sometimes. In the BBC special on the Marie Antoinette, it shows an old clip of the watch running and it also starts ticking while Nicholas Parsons is handling it. An original tourbillon pocket watch (I think it was Stanislas Potocki's?) is also seen running on display in a museum.

    Ray, a speedy and complete recovery! Looking forward to your next thread.
     
  15. Keith R...

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    Best wished boss.

    Keith R...
     
  16. Tom McIntyre

    Tom McIntyre Technical Admin
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    Not only do we get to see these pieces run, but they get disassembled while running so you can see the important bits interacting while the rest get peeled away.

    The technology has advanced quite a bit since the first of these that I saw back in 93.

    I wonder if the ability to see this level of detail might do a bit to reverse the apparent drop in interest in the internals of these marvelous machines.
     
  17. Omexa

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    Hi all, just an update, I am back at home from the Hospital; a bit worse for wear but all OK; (they have found the cause of the last 4 trips to Hospital; trust me to have an unusual problem not seen often; it is not the Cancer come back) hands are not good because of difficulty finding Veins for Cannula because of damage from chemotherapy. I have had 2 X Rays and 2 CT Scans. I have had so many Scans over the last 4 years I should maybe glow in the dark. For one Scan they used the 2 Day old new CT Scanner. I will work on a Computer I am building until my hands feel a bit better for Pocket Watch work. Thank you all for the kind comments. There is no drop in interest by me in the way escapements and internals work.
    Regards Ray
     
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  18. John Matthews

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    Ray - we are all pleased to see you back online - speedy return to dealing with internals of the mechanical variety ...

    John
     
  19. rstl99

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    Speedy recovery Ray!!!

    And Tom, thanks for sharing those remarkable films and animations of John Redfern, they are stunning. I can only wish I had something like that to help me understand the mechanics of that odd swiss(?) duplex movement I was showing in a different thread. I've started making crude sketches of it, but John's animation would be outstanding. And as you suggested, a set of Vyskocil's or Tavan's escapement models would make for mouth-watering viewing for horology addicts!!

    --Robert
     
  20. Tom McIntyre

    Tom McIntyre Technical Admin
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    Our NAWCC Museum has a display of the Beeler collection of clock escapements that were made by Fred Beeler. @Fortunat Mueller-Maerki posted links to videos of the collection from the main web site, but those links are no longer working.

    You may, of course, see the walking tour of the museum on Google. Here is a screenshot from that asset.
    Google Maps
    upload_2018-8-4_11-37-48.png
     
  21. Keith R...

    Keith R... Registered User
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    Tom, I had asked CWCo NH to take a look at the Redfern animations, their response..........I was a little late.
    So many see the amazing capabilities. Thanks for sharing.

    Keith R...
     
  22. FinStP

    FinStP New Member

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    Just in case people here are not aware, John Redfern passed in early November 2019. A sad loss to the community and his family. I was proud to know him as a friend.
     
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  23. gmorse

    gmorse Registered User
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    Hi FinStP, and welcome to the forum,

    I'm very sorry to hear of John's passing, as I'm sure will everyone here who's seen his masterful animations. His was a rare talent.

    Regards,

    Graham
     
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  24. Tom McIntyre

    Tom McIntyre Technical Admin
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    I had not been in touch with him since last May and did not know he had passed.

    I just checked the web site and it has been surrendered and no longer displays his animations.

    Does anyone know what has happened to his technology and publications? It would be tragic to have the material lost in addition to the already tragic loss of his talent for these animations.
     

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