Blum 10 3/4
Description
Unfortunately, nothing is known of this wonderful 10 1/2 ligne lever movement, that might be helpful for his identification, only the marking “38.6” might be a clue.
base plate
The nase plate pleases with its perlage in the visible area.
Of course, all important bearings are equipped with rubies.
gear train
The classic gear train construction is used with a directly driven center minute wheel, followed by third wheel, seconds wheel at 6 o’clock and finally the steel escape wheel.
side view of the gear train
Of course, the two-legged bimetallic screw balance is not yet shockproof.
It beats with 18000 alternations per hour and regulares a swiss
pallet lever movement.
The exact frequency can be adjusted with the help of a long regulator pointer arm.
dial side
On the dial side it is noticeable that from the Breguet ratchet to the hands works, two change wheels are used instead of the usual single change wheel.
The yoke winding system is constructed comparatively simply and partially embedded in the base plate.
Technical data
| Manufacturer: | Blum |
| Caliber: | 10 3/4 |
| Size: | 10 3/4''' (measured: 23,2mm) |
| A/h: | 18000 |
| Number of jewels: | 15 |
| Escapement: | Pallet lever |
| Balance types: |
bimetallic screw balance (two legs) |
| Shock protection(s): |
none |
| Balance bearing / direction hairspring: | Clockwise |
| Moveable stud: | no |
| Adjust mechanism: | Long regulator arm |
| Construction: |
|
| Construction type: | solid construction |
| Winding mechanism: | yoke winding system |
| Features: |
|
| Inventory number: | 22002 |
Usage gallery
probably from a wrist watch