DuRoWe 275

 
DuRoWe 275

DuRoWe 275

Description

In the 1940s, form movements were quite popular, maybe due to the fact, that they allowed large mainspring barrels and balances.

The DuRoWe 275, made in the 1940s, belongs to this species and is pretty large with a size of 7 3/4 x 10 lignes.

Its golden color gives it a worthy appearance.

base plate

base plate

It’s noteable, that from this large base plate, a lot of available space is unused, because the construction with the decentral seconds indication at 6 o’clock doesn’t allow a better place consumption.

All important bearings contain rubies, another indication, that this movement belonged to the best wristwatch movements made in Germany at that time.

gear train

gear train

The gear train is standard, with mainspring barrel, directly driven center minute wheel, third wheel, seconds wheel (at position 6 o’clock) and a very filigree escape wheel. The latter one in beared under its own cock.

side view of the gear train

side view of the gear train

Of course, the monometallic screw balance is not yet shock protected.
As usual, it beats with 18000 A/h and regulates a swiss-type pallet lever movement. With the help of a long regulator arm, the beating frequency can be adjusted.

DuRoWe 275: Dial side

DuRoWe 275: Dial side

On the dial side, too, the DuRoWe 275, which has got the DuRoWe hallmark, but no caliber number engraved, makes a good impression.

As common on better movements, the keyless works uses a yoke winding system.

Technical data

Manufacturer:DuRoWe
Caliber:275
Size:7 3/4 x 11''' (measured: 17,2 x 25,0mm)
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)
Literature: Flume: 1947 131
Jacob: 1942 33 (15050)
Inventory number:20046
This movement is a kind donation from G.E.W. Gehrke. Thank you very much for your great support of the movement archive!