I finally got back into the shop today after doing a lot of shopping.
This morning was used to cut the parts for my main weight and to finish up some small parts, I also had to make a couple of grub screws that I haven’t been able to find at any store here.
The main weight in the plan is a plastic tube almost 20” long and filled with about 2.4kg of divers lead (small lead round pellets). I didn’t like the look of the plastic in the plan so I did a little coopering work and cut 12 staves from some 6mm (1/4”) ply on my table saw to make the weight container. It isn’t glued up yet, only held together with tape. I will probably cut it as short as I can later. photo below
I promised to take a shot of all the parts, which I did today. The only missing part is the ‘handle/counter weight’ to the main weight which is pulled down to raise the main weight to the start position. You might have to zoom in on the photo to read the labels. They are at the bottom of each part
The1st photo below shows the winding wheel that the weight runs on in 5 pieces that will be glued together and the 3 part frame which will also be glued together.
The 2nd photo below shows the winding wheel, the frame and the pendulum bob as they will look when their different parts are glued together. This gives a better idea of the finished parts. The pendulum is sitting in the order it will be when assembled with the pallet at the top end. I didn’t have room in the photo frame for the bob at the bottom.
The labels are in the correct terminology this time. Gears are called wheels. One wheel and the pinion it will turn are called a ‘wheel set’ with the pinion part of the set glued on to the next wheel in the train.
The 2nd wheel is a helper wheel, it is only used to keep the 3rd wheel rotating in the correct direction so it can turn the escape wheel in the right direction. This is because the next wheel in the chain runs in the opposite direction from the wheel driving it.
The pinions (the smallest gears) are driven by the prior large wheel in the train and they are glued to the next wheel in the train.This is done so that the clock movement can be compact and a large wheel doesn’t have to sit tooth to tooth with another large wheel. It also helps to reduce the diameter and number of teeth on the wheels. (I hope I got that right. Please correct me if I didn’t).
As you can see from the last photo, this shows how few parts there can be in a clock and none of it is really difficult to cut or assemble. Accuracy is important though and it remains to be seen how good a job I’ve done on that. So if you have been thinking of making one I hope you are getting a pretty good idea of what’s involved. I will blog the clock assembly after the glue-ups are dry and I’ve done a little light sanding and dye work.
I hope you are enjoying this blog and thank you for following with.
-- Mike, an American living in Norway.