DuRoWe 202

 
DuRoWe 202

DuRoWe 202

Description

From the 1930s dates ones of the earliest movements of the DuRoWe, the DuRoWe 202, which is, according to some sources, the military version of the DuRoWe 410.

It has got the standard diameter of 10 1/2 lignes and uses 15 jewels, some of them, probably due to war, transparent instead of ruby-red.

base plate

base plate

Even though the transparent rubies give an other impression, all important bearings contain rubies.

Only minute wheel and mainspring barrel use metal bearings, but that’s not a problem, since they rotate slowly and so don’t have friction problems.

gear train

gear train

The gear train uses the classical construction with mainspring barrel, directly driven center minute wheel, third wheel, decentral seconds wheel at 6 o’clock and finally the very filigree steel escape wheel. The latter is beared under an own cock.

side view of the gear train

side view of the gear train

The screw balance of the DuRoWe is of course not yet shock protected.
It beats with 18000 A/h, regulates a pallet lever movement of swiss type and can be adjusted with a long regulator arm.

Durowe 202: Dial side

Durowe 202: Dial side

On the dial side, you see the yoke winding system, whose setting lever spring war “repaired” a bit shirt-sleeved.

In the lab

The specimen shown here came without case and slightly dirty into the archive and got a simple service.

Timegrapher result

The pretty poor rates are probably caused by the age and wear of this well used movement.

horizontal positions
dial up +21 s/d 214° 0.9ms
dial down +3 s/d 196° 0.9ms
vertical positions
crown right (12 up) -10 s/d 184° 1.1ms
crown up (3 up) -40 s/d 175° 1.5ms
crown left (6 up) -50 s/d 193° 1.1ms
crown down (9 up) +42 s/d 173° 1.0ms

Technical data

Manufacturer:DuRoWe
Caliber:202
Size:10 1/2''' (measured: 23,3mm)
A/h:18000
Number of jewels:15
Escapement:Pallet lever
Balance types: Nickel screw balance (two legs)
Shock protection(s): none
Balance bearing / direction hairspring:Clockwise
Moveable stud:no
Adjust mechanism:Long regulator arm
Construction:
  • lever
  • escape wheel
  • seconds wheel, third wheel, center minute wheel
  • mainspring barrel
Construction type:solid construction
Winding mechanism:yoke winding system
Setting lever spring:2 hole(s)
Features:
  • s (decentral seconds)
References: Feilner: 133
Jacob: 1942 13 11046
Inventory number:21015

Usage gallery

anonymous gents military watch  (case missing)

anonymous gents military watch (case missing)

This movement is a kind donation from Prof. Peter Schmid. Thank you very much for your great support of the movement archive!