Craynerd builds Wilding's - Woodward's Gearless Clock

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saw:
You are doing a very good work, I hope that it will work out very well for you. :bugeye:

spuddevans:
That's coming along very nicely Chris :thumbup: I hadn't seen the "daisy wheel motion" before, thanks for showing it.

Tim

Stilldrillin:
I very much admire your perseverance Chris! :clap: :clap:

But now, I'm lost completely! :palm:

Hope it makes more sense after I've had me breakfast....... :thumbup:

Yer doing well...... Keep on with the developments! :D

David D

picclock:
Hi Chris

Can you give any more info or a video of the daisy wheel reduction mechanism ?.

I'm probably being a bit dense here, but the daisy has 12 notches, and there are 4 pins on the wheel which is mounted eccentrically. So in my mind I see each petal advancing 1/12th of a revolution every pin engagement. So I would see this as a 3:1 reduction which it obviously isn't.

What happens if the daisy wheel is moved to a halfway position at the moment when the pin should engage - I presume this would cause it to jam, so how do you ensure during adjustment of the time that this does not occur ?

Very interesting project, thanks so much for sharing.

Best Regards

picclock

raynerd:
Thanks for the comments and interest you are taking.

I have to admit that I`m not great at reading tech. drawings and every part I`ve ever made, I`ve had to understand how it works first to help read the drawings. This is the first assembly I`ve ever made without understanding how it run...despite my best efforts and hours or reading and studying, I just could work it out. I don`t expect to do much better at explaining how it runs but I`ll do my best with perhaps a video later tonight!!

The first thing to note that confused me massively was that the only single part revolving once per hour and therefore "stuck" (it is actually friction fit against the clutch spring) to pin wheel arbor, is the minute collet - that is the part with the cam attached in the centre of the photo. So that is doing 1 complete turn per hour. The end of it is thread and the minute hand is sat screwed onto the end.

The pin wheel is also free to turn independently on its axle (the minute collet) but can`t as its pins get stuck in the grooves of the petals. The pin wheel has the hour hand stuck on it.

The daisy wheel then simply "sits" on the cam and slides on it. So as the cam turns the daisy wheel lifts up and down.

As the daisy wheel lifts to the top and then to the bottom each hour, its action throws the legs of the pin wheels between the daisy petals and each hour, a pin locates to the next V on the daisy wheel. There are 11 petals and "V" notches between petals on the wheel and therefore in my simple head, I can`t do any more than imagine the count of the hour hand and it works - for 12 rotations of the daisy wheel the pin wheel rotates one complete turn.

I don`t think I`ve posted gadgetbuilders youtube video... THIS IS NOT MY VIDEO but it a great vid of how it works:

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