One of my Mum's friends dropped off a pocket watch for me to service. It was her father's watch, and she used it all through her nursing career: so it held quite some sentimental value to her. She told my Mum that it did run; but only for a few minutes and then stopped, unless the crown was moved.
It's a German made Kienzie Markant.
I popped the back off and the movement and saw that it was VERY dry, but in good condition. First thing I notice was the stamping .... Zero (0) Jewels - Unadjusted. So this thing is no RR Standard Hamilton; but none the less a nice little project, and one that will make my Mum's friend happy :)
The front was also removable via a case blade, and since the Main Plate was riveted to the case is required to be removed in order to service this movement.
With the hands removed, the dial was next. It is secured by two screws on the face.
Motion Work is a very basic setup. So I removed the Cannon Pinion and moved to the back of the movement.
While inspecting this movement carefully, as this is my first attempt at a pocket watch, I noticed a few things that I'd never seen before...
Firstly, the timing adjustment is done by a sort of jack screw arrangement. (Note: The two large screws for securing the Balance, and a smaller "Jacking Screw" to adjust the timing.)
Secondly, the Fork arrangement was also something new to me. Posts instead of Pallets to engage the escapement.
Here's another view the Fork removed.
So I removed the tension from the Mainspring, and removed the Balance and Fork.
I was a little nervous removing the Bridge, as it's a 3/4 Bridge and I couldn't see the layout of this movement, and since this is a very new style of movement to me I wanted to take reference photos. Well my nervousness was justified, and EVERYTHING lifted out with the Bridge!! ACk!! :startle:
Again, something new to me was the layout of the Keyless Work. It's a rather clever rocking pinion system. Rock one way and the Mainspring is wound, rock the other and you engage the Motion Work.
Thankfully the Click Screw was marked as a left-hand thread ... Note the extra stripes either side of the Driver Slot.
Movement is fully stripped and ready for a bath :)
Here's that nasty 3/4 Bridge that stopped me taking reference photos of the Gear Train Layout.
Once all the parts were clean, it's time to get this thing back together .... Gulp! :lolu:
My Heavenly Father has gifted me with skill and cunning when working with watches, and I thank and praise him for it!! To assemble the Gear Train, I placed them upside down on the 3/4 Bridge, and then lowered the Main Plate on top of them. This made the alignment of the train and pivots a breeze.
I then flipped it back over, and with a few gentle wiggles and very slight pressure on the Bridge, everything was in place.
I replaced the Second Wheel, and the Spring Keeper.
Refitted the Motion Work and Cannon Pinion.
Then the Fork and Balance.
Adjusted, fitted the Dial and Hands, and Re-Cased.
The Kienzie Markant is now running smoothly and continuously. It was great fun to work on, and I hope you enjoyed the walkthrough.
PS. when held to the ear, the ticking sounds like an old grandfather clock :P Gotta love dem pocket watches!!