I get requested to interchange loads of platform escapements – or no less than this turns into a part of the job because the motion is cleaned and it has been found that the platform is worn out. The very first thing is to get the previous one off and depend the quantity of tooth on the escapement pinion gear. Take a look at the angle the pinion gear has been set at as nicely. With a carriage clock it’s going to usually be dealing with a 90″ tangent to the clock escapement drive wheel (the one that appears like a crown). On a french barrel motion it actually might be wherever nonetheless. It’s because in contrast to the carriage clock, they don’t have a crown cog that’s inverts drive by 90″ and the perfect path for the pinion wheel dealing with tooth might be wherever. I point out this as a result of in case you purchase the flawed platform escapement kind you aren’t going to get wherever – they can’t be modified simply and are fragile.
After getting sourced the proper platform escapement then you’ll want to suit it. That is troublesome until the trick……which is blu-tak.
You blu-tak the escapement to the again plate with the clock unwound. You may then facet it into place so the protruding platform escapement pinion gear is touching its drive cog and provides the important thing one wind (you wish to test it’s going to work at low energy). If its in place it’s going to begin to run. If it doesn’t then simply slide it a really small quantity to re-engage the drive cog and you can find the candy spot.
After getting positioned it then depart the clock to test if its working in time for an hour or so. You’ll choose up any critical deviation on this timescale if there may be one.
Heres one I’m doing in the present day.
The following step is to mark up the brand new screw factors utilizing the platforms holes as a information. Then its a matter of measuring your screw diameters and drilling / tapping holes to mount the platform – you will want a standing drill for this job; by no means drill clock holes “by hand” – all types of issues can go flawed however principally its about holding the opening at 90 levels to the face.