Lorsa 514A
Description
The french Lorsa caliber 514A is a ladies’ form movement, which is described in the literature with 5 1/4 lignes, but measures 5 3/4 lignes instead.
Technically, it is like any other form movement of the early 1970ies; it has got a kind of Trishock shock protection system (unusual for french movements), seventeen jewels (and on the dial side it was already prepared for additional cap jewels) and a yoke winding mechanism
As you can clearly see on the pictures, those watches had to be constructed to be tortured pretty hard, since in those times, a watch was already a consumer tool which was not cared for too much anymore.
version with RUFA-Antishock shock protection
Lorsa 514A dial side
dial side, version with RUFA-Antishock shock protection
Technical data
| Manufacturer: | Lorsa |
| Caliber: | 514A |
| Size: | 5 1/4 x 8 1/2''' (measured: 12,5 x 19,0mm) |
| A/h: | 18000 |
| lift angle: | 52° |
| Number of jewels: | 17/21 |
| Escapement: | Pallet lever |
| Balance types: | Nickel anular balance |
| Shock protection(s): | Ruby-Shock Rufa-Anti-Shock |
| Balance bearing / direction hairspring: | Counterclockwise |
| Moveable stud: | yes |
| Adjust mechanism: | Hairspring key |
| Construction: |
|
| Winding mechanism: | yoke winding system |
| Setting lever spring: | 4 holes |
| References: | Flume: 1962 28 |
Usage gallery
Isoma ladies' watch
Juta ladies' watch (dial only)
Links
* [Ranfft Uhren: Lorsa 514A](http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&Lorsa_514A)
This movement with the RUFA-Antishock protection was donated by [Klaus Brunnemer](index.php?option=com_content&view=article&id=62:donated-movements-of-klaus-brunnemer&catid=10&lang=en-GB&Itemid=201). Thank you very much!