Hardly anyone is familiar with the fact, that in the german town of Baden-Baden was a production of movements and watches. At least in the 1960ies, the “Uhro-Uhrenteile und Fabrikations- und Handelsgesellschaft bmH / Alfred Kleinmann” was located there. They made simple pallet lever movements, sich as the Uhro 60 shown here. It is a 8 3/4 ligne pillar movement with a rocking bar winding system - the simplest possible incarnation of a pallet lever movement.
Indeed, all important bearings contained rubies, but since minute wheel and mainspring barrel were only metal-bared, a trick had to be used to reach the important number of 17 jewels: Escape- and seconds wheel have got two cap jewels each on the movement side.
If you look exactly, you can see the rocking bar, which is normally located on the dial side, and not on the movement side.
The gear train is identical to one of a pin lever movement: Mainspring barrel, followed by the directly driven center minute wheel, third wheel, seconds wheel at 6 o’clock, and, unlike a pin lever movement, a well executed escape wheel made of steel at the end. All under one single three-quarter plate, and so not very much service-friendly.
Of course, such a pillar construction builds pretty high, resulting in long and fragile axles.
Fortunately, the two leg anular balance is already shock protected and beared in two, at least for german movements pretty unusual, M.T.-Antichoc bearings. Probably this is due to the the near french border.
The Uhro 60 beats with 18000 A/h and regulates a conventional swiss type pallet lever escapement.
On the dial side, as written above, you see the unusual executed rocking bar winding system. Since the rocking bar itself is located on the inner side, you see only the three riveted gears on the dial side.
The ratchet however, is very nicely executed, just like on far more expensive movements on top of the winding bridge.
With these details, you can identify this movement easily, even altough is has got no manufacturer and caliber number hallmarks at all.
|Size:||8 3/4''' (measured: 19,3mm)|
|Number of jewels:||17|
Nickel anular balance|
|Balance bearing / direction hairspring:||Clockwise|
|Adjust mechanism:||Hairspring key|
|Construction type:||pillar construction|
|Winding mechanism:||rocking bar winding system|
Flume: K3 17|