Chris Barrett 1 | 02/10/2018 19:19:32 |
8 forum posts 2 photos | My previous post on this forum solved one problem - minute hand slipping - the cure was to compress a star-shaped spring. Thanks for this advice. But now there's aother problem. The clock movement was running well for three days continuously - I was regulating the pendulum length, while I could observe it running, before putting it back into its case. Then it suddenly stopped. The cause was that there was no drive to the escapement. So my question is - how do I stop the smaller gear moving forwards and jamming with the teeth of the large gear? Any advice would be very welcome. I apologise for not using the correct technical terms - I am an engineer, but am only slowly starting to learn about clocks.
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Brian H | 02/10/2018 20:05:21 |
![]() 2312 forum posts 112 photos | Is it possible to add a spacer (washer) to take up the play? Brian |
Fowlers Fury | 02/10/2018 22:21:07 |
![]() 446 forum posts 88 photos | No apologies needed for non-horological terms ! However on the basis of your description it's necessary to make some guesses/assumptions which could well be wide of the mark.
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Mick B1 | 03/10/2018 08:12:17 |
2444 forum posts 139 photos | Might you be able to make or find a 'C' washer that you can snap onto the pivot of the wandering component to constrain its movement? I was thinking of something like what was sometimes called an Anderton clip - though I guess you'd have to be pretty cute to make one, or pretty lucky to find one, that'd fit. But it might save some tricky assembly work if you could. |
Chris Barrett 1 | 03/10/2018 16:02:04 |
8 forum posts 2 photos | Thanks for the various bits of advice.
I came up with an alternative solution. I glued a small washer to cover the end of the pivot hole, to stop the gear from moving too far forward and clashing with the large drive spring gear. See picture 1. This solved the problem of the gears clashing. But then I discovered the reason for the gears clashing - oddly, I had not noticed this before. See picture 2. The drive spring casing, and the gear behind it, is tilted backwards. The top of the large gear is nearer the back of the clock than the bottom of the gear. You can see how little clearance there is between the two gears, even with the small gear pushed back by the glued washer. Should I be worried about this?
Edited By Chris Barrett 1 on 03/10/2018 16:03:13 Edited By Chris Barrett 1 on 03/10/2018 16:04:08 |
Michael Gilligan | 03/10/2018 16:51:22 |
![]() 23121 forum posts 1360 photos |
. Assuming that the clock was not built wrong ... It looks like it has had a long, hard, life ! It may limp on for another decade or so, but it's certainly not right. You will probably find that the barrel arbor pivot, and/or its hole are badly worn: ... This is a very good time and place to learn how to re-bush holes. MichaelG.
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Bazyle | 03/10/2018 18:29:36 |
![]() 6956 forum posts 229 photos | This movement is a very common design with a moving barrel so the main winding arbor turns as you wind it so you can see if there is any wear at the rear which is where the force of the interaction of the wheel and pinion acts more than the front. It is probably fine. Then you can try moving the barrel relative to the arbor to see if the wear is at the centre of the main wheel (most likely as it rather inaccessible for oiling, though it is doubtful the clock has ever been oiled. Most likely it has come to light because the frame has been distorted slightly during the recent manhandling. You should be able to work out which way to thump it to free it up a bit. |
Michael Gilligan | 04/10/2018 08:47:46 |
![]() 23121 forum posts 1360 photos | Chris, I was looking for something else, and found this: **LINK** https://clockrepairs1969.wordpress.com/why-i-wont-be-servicing-your-clock-for-40-how-to-service-a-smiths-clock/ You may find it useful. MichaelG. |
Chris Barrett 1 | 04/10/2018 16:08:23 |
8 forum posts 2 photos | What a wounderful, comprehensive write-up! Thanks, MichaelG! |
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