This is a typical movement of the period. Many of these movements were made in foundries as 'kit form' and sold to clock makers. Though it required a great deal of skill to produce a working movement.
There was a great deal of wear through out the movement. Notably the pivots showed significant wear, beyond what could be rectified by re-facing and burnishing. Below are a few examples.
Six pivots were found to require replacing. The worn pivots were cut away and new holes centred and drilled into the ends of the arbours. Followed by new pivot steel fitted into the holes, faced, polished and burnished. The picture below shows a repaired pivot.
Every pivot hole in the movement plates required attention, worn over time by the rotating pivots. The first picture below shows marks on one of the movement plates highlighting what side of the pivot holes are worn. Before a brass bushing can be fitted in these to make good the wear, the holes must be re-centred and reamed out. Accurate re-centring ensures that the wheels and pinions engage by the correct depth. The second picture below shows a centred and reamed hole in the plate ready to accept the new bushing for the main wheel arbour.
The main wheel arbours are the largest in the movement and bear the weight of the 12lb lead weights. The bushings need to be a tight tapered from the inside, and be peened, see first picture below, into a slight chamfer the newly reamed hole to prevent them shifting out of the hole, especially during winding of the movement. Following this it can be filed flat and finished in order to make the finish the repair to a high quality and original condition.
The first picture below shows the re-bushed strike train. All wheels are able to turn freely and engage at the correct depth. The same work was carried out for the going (time) train. Other pictures show the movement restoration complete and ready for testing for two weeks before being fitted back into the clock longcase.
