Thiel produced two different movements with the name “Darling”, a 13 1⁄2 ligne movement from the early 1900ies and a compareatively small 10 ligne movement from the 1930ies.
The later Thiel Darling is a typical pin pallet movement in machine made construction, which at least offeres a stripe decoration on the gear train bridge.
The gear train of this pillar movement is absolute standard: The mainspring barrel, whose ratched is located on the inner side of the base plate, drives the center minute wheel, followed by third wheel, seconds wheel at 6 o’clock and finally the escape wheel.
On this high building movement, there are no bearing jewels for the gears, only the non shock protected balance is beared in two jewels plus one cap jewel on the balance cock.
The beating rate of 18000 A/h is adjusted with a long regulator arm plus scale on the gear bridge.
To compensate the long lever fork, the lever has got a larger U shape, whose larger part resides above the escape wheel.
A clear characteristic of the “new” Darling caliber is, that on the dial side, the balance wheel is ruby beared, but instead of a cap jewel, only a metal plate is used, easy to spot at position 9 o’clock.
|Number of jewels:||3|
Nickel anular balance|
|Balance bearing / direction hairspring:||Clockwise|
|Adjust mechanism:||Long regulator arm|
|Construction type:||pillar construction|
|Winding mechanism:||rocking bar winding system|
|Functions:||hour, minute, decentral second|
|Size:||10''' (measured: 21,9mm)|
|Production period:||1931 - 1936|