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Published: 2007-12-02 23:30:59 +0000 UTC; Views: 423; Favourites: 2; Downloads: 10
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This is a large and complicated project that has been put on hold probably until I'm done with school.It's a Gothic iron chamber clock, of a style from the end of the 15th century. It's still quite rough at this stage, most of the parts still require a fair bit of work.
All the flat elements (wheels, frame) were forged from an old wagon tire, which is why there are holes in odd places. The escapement (crown) wheel has 49 teeth, the drive wheel 100, all hand cut with a saw and filed. The arms of the drive wheel were rivited on, the arms of the crown wheel brazed in the forge. The wheels were also brazed to the arbors, and the pallets on the verge are brazed on. All this brazing was done in the forge, no torches were used.
The lantern pinion was made with 14 ga. wire and 14 ga. sheet steel. The trunions were brazed in, in this case a microtorch was used.
The weights are forged chunks of lead. The verge and foliot would be suspended from the piece sticking up from the top of the frame by a string. I won't get into exactly how the mechanics work, but this is a 'verge and foliot' type clock.
The hook in the wall is a reforged eyescrew.
There would be another pinion on the shaft sticking out of the frame, and another wheel to which the hour hand is attahced. There is no minute hand, with a clock that's considered accurate if it's +/- 15 minutes an hour a minute hand's not needed.
I don't know if I'll continue this once I'm able. I may start a whole new clock. The gears do work here, but I thought it would be easier to do a three wheel drive instead of a four wheel, and I'm beginning to think that was wrong. Though there's an extra wheel and pinion to be made and fitted, the teeth would be a little larger and more spaced, and it would be easier to get things matched up. I think I could get it to run smoother, especially the escapement. If that's what I end up doing, at least I learned a lot while making this. I especially improved my forge brazing and welding techniques. Can't even see the weld on the escapement wheel, and there's only a tiny seam on the drive wheel.
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Comments: 1
Avionscreator [2017-03-30 00:22:23 +0000 UTC]
Wow, that's pretty awesome! Did you finish it?
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