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Archive | November, 2011

Clock tweaks

tweaks1

What you see here is the new sprocket I made for Little Clock.

I made it up as I went along as I had no plans on how to make one and stripping and measuring an old one seemed too complicated. I dont like the look of the antique ones. I think they are a bit ugly. Mine is nice and sharp and simple.

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Well the Cuckoo clock goes back tomorrow. You can see the last tweak to this clock – a small casting I made to add to the pendulum.

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This was from a few weeks back I thought I’d post it for the sake of it.

Little clock

little-clock

littleclock-2

So far, this clock has taken about seven full days work, not including the theory and design stage. It started off as simply being escapement practice. I was going to make a recoil escapement in a little frame all on its own with a weight hanging on to keep it ticking, for the purpose of seeing easily and being able to explain to non-clockies about how the heart of a timepiece works.

Well, then I couldn’t resist it, the thought had to cross my mind of – What is the simplest, easiest gear train to bring me to an hour hand? It could then be a single hander and have a happier purpose in life. To my surprise a very nice gear ratio worked out to actually include a minute arbor along the way, so without motionwork I will have both hands telling the time correctly. The odd thing is (obviously) if I have the minute wheel turning the hour wheel immediately, one of them will be going backwards. So to keep in the ‘strictly simple’ theme I opted to have the hour wheel AS the hour dial – going in reverse with a fixed pointer.

Well like I say this has taken seven days but those days have been spread over most of the year. I was struggling finding a name for this clock, which started out as The valentine clock because thats the day I started construction. But it has settled on being called Little Clock. Because I have a big clock and this is smaller in lots of ways. It kind of reminds me of the Galileo clock, his first design using a pendulum.

Also as this clock first started as a practise exercise I decided to include other techniques that I am rusty on; I had not before made lantern pinions, I had not made regulator style wheels and I had not made or dealt with chain drive before. I have not thought yet of what base or pedestal it will sit on. I think there will be a phase two after its complete sometime in the future. I may put a deadbeat escapement in (just for practice) I may put on a little brass bell with a passing strike. And for now I’m not going to fit in a ratchet. The weight will have to be lifted off with its hook.

Cuckoo clock

cuckoo-clock

Well I have two clocks on test, they seem happy. I have my longcase clock still to finish and my experimental clock still to finish. I have two watches with easy repairs to do. I have a difficult watch repair coming in and yesterday I picked up a cuckoo clock for repair. I have not looked at it yet but even though it’s low priority I may tackle it this afternoon.