Osco 850
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| Osco 850 |
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Description
The Osco 850 is one of the latest inhouse movements of the manufactury of Otto Schlund in
Schwenningen, Germany. It is build in a pier construction with undecorated plates and a
winding system, that runs partially in plastic bearings.
The modernly shaped ring balance is secured by two KIF Trior systems; the minute wheel
is excentrically located and the center second (which runs in a clear jewel) is indirectly
driven by a twice geared wheel.
Unfortunately the movement shown here is in a very bad condition with large parts
of the date mechanism and the stem missing as well as with a bent hairspring.
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| dial side view |
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| dial side view without date mechanism |
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Technical data
| Manufacturer | Osco |
| Caliber | 850 |
| Number of jewels | 17 |
| Escapement | Anchor with pallets |
| Balance | Nickel |
| Shock protection(s) | KIF Trior |
| Balance cock direction | clockwise |
| Hairspring stud | moveable |
| Regulator type | Hairspring key |
| Movement construction | Fork
Escapement wheel, Fourth wheel, Third wheel, Large driving wheel, Center second pinion
Mainspring barrel |
| Features | SCI,QG |
| Functions | Hour, minute, second, day |
| Beats per hour | 18000 |
| Size | 111/4''' |
| Image in Flume Werksucher | K3 44 |
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| Factsheet |
Usage gallery
