Hi Naing, In the picture you sent with your first post, the movement that you have looks to be an interesting and early example. It does not have an overthrow damper for the gravity arm and it has the

Hi Naing, It doesn’t look as though anyone can help you with a CAD drawing, so perhaps this is useful. The wire is 1/32 inch or 0.8mm steel, one end hammered flat and bent into a loop with 2mm diamete

Dear Howard I have a very similar or worse pitting in an early clock in which the spark quench resistors were broken in both slave and master, presumably accelerating the deep pitting I was thinking o

Hi Sorry I gave the wrong URL in the first message wp.clockdoc.org will work Eddy

Apologies Chris, in my reply the link should have been wp.clockdoc.org Eddy

Hi Chris, congratulations on the new clock. You will find full installation and setup instructions in the synchronome documents folder on the clockdoc website at wpclockdoc.org If you go to synchronom

Hi Howard, That should be a standard 1930s synchronome. If it has a pilot dial then it is normally run on 6 V (nominally 4.5v master + 1.5 per slave, though of course as you say it is designed for con

When I was trying to find out about this for the Eureka information on the clockdoc website I wrote that one turn in or out of all the screws would be equivalent to about 15 seconds a day. I'm sorry I

I was just about to reply something similar No one really seems to know the significance of the differently sized weights but they are probably not designed to be adjustments, the inventor said the cl

HI According to the Shenton book the 40 tooth wheel type has a longer spring, the standard spring for the 45 tooth wheel should be 12 ¼ turns so check and see if wrong one fitted, but I don’t know the

There is also another group electric-clocks@groups.io covering other electromagnetic clocks, with members in common between the two Eddy Odell

Hi Ian Yes, that was done as a development before the Shortt in two types of clock, using the inertia bar principle. In these the idea, as in the Shortt, is that the speed of pendulum movement lengthe

Hi all, I am not sure there is much wrong, the expected resistance of the master and slave coils in series with a parallel resistance of about 110 ohm is only around 10 ohms anyway. OK, so coils are n

Does anyone by any chance know whether they own the synchronome master clock from St George's baths in Bett’s Street, Stepney. I have the engineers service sheet for it with entries dated from 1964 to

I don’t know the correct screw type, but I know a man who does I will see if I can get details Eddy

Hi Peter, good point, the softness of the material in an old suspension might well mean it was solder, but need to make sure its not fluxed of course if using a modern electrical solder Eddy

Hi, not sure whether you know the correct size of the lead wire, I do not, but I can see that it needs to be larger than 0.4mm to be proud of the slot and squash. Lead wire is difficult to find, if on

Dear Phil I have measurements for a Bulle suspension for the large type A clock that is a bit younger than yours. If anyone suggests they are different, I do have a clock with about the same serial nu

As other have pointed out, not too difficult to make, but there are others making them and currently on ebay uk, (I have no connection to seller and have never bought one so cannot vouch for them) Edd

Looks like a very early gents tel-tale nightwatchman clock, holes in base would be where the electromagnetic hole punching devices were fitted. These clocks had a horizontal paper disc just above the