A Brass Alarm Clock.

[BRIAN]

With the arival of the bell things started to move rapidly
the bell finial was turned by rotating the tool post then finished with a hand graver.





The full clock was then put on test. prior to moving it into the house.









So its finished, maybe I will add a strike on the HR, but at the moment my hands are full.

Now I have sorted the bugs on my one, Andrea will continue with his but he is also ocupied with school and church matters .

Brian.

 

[BRIAN]

Andrea is back in the shop.after a long lazy summer.
We started on the Foliot arm. setting up the blank in the mill to cut the notches for the weights
using a pinion cutter.


The blank was then roughed out using the small belt sander.



The pile of parts so far.



Coming along nicely.


Brian.

 

[parastoo]

Hi Brian,
I'm trying to build this clock. How did you round the teeth on the main escape wheel? I've tried sandpaper but it has a tendency to produce a barrel shaped front tooth face ; the sandpaper takes more off the top and bottom of the tooth face than the middle.
Thanks,
Mark

 

[BRIAN]

HI Mark. Sorry if I am a little late with a answer I have been on holiday in scotland for 3 weeks.
first thing to point out is that the escapement only works on the top 2mm of the tooth so any work you do on the lower part is for looks only??
I use a swiss file to get the basic shape then polish with a emery board. I cant get emery boards localy so I steal my ever tolerant lady's fine nail board, be careful not to reduce the front face only curve the edges, the lower pallet edges must also be rounded.
When you try to make it run you may find that the back curve of the pallet fouls on the tooth that has just been released so you must file away the back curve, but try not to alter the tip of the pallet.
You can also ease the back edge of the tooth to cure this problem.
I hope this helps .Brian

 

[parastoo]

Hi Brian,
Thanks for your input.The emery boards sound like a good idea.I'll give them a try.

Mark

 

[BRIAN]

At last Andrea's clock is finished, not as an alarm but with a strike on the hour.





Brian.