PUW 1075

 
PUW 1075

PUW 1075

Description

The PUW caliber 1075 is a typical ladies’ form watch movement of the common size of 5 12 lignes. From the mod 1960ies, it was one of the successors of the PUW 74. Since in 1967, it successfully passed the national quality inspection, you can assume, that it was available sine the mid 1960ies.

The only difference between this movement and its predecessor PUW 74, has got cap jewels for the escapement wheel instead of bearing jewels for the minute wheel.

The three-arm annular balance of the specimen shown here is beared in a pair of RUFA-Anti-Shock protection bearings.

Dugena used that movement and gave it their own number “Dugena 2500”.

PUW 1075 dial side

PUW 1075 dial side

On the dial side, you can see the yoke winding system.

In the lab

The specimen shown here arrived in good condition, so there was no need for a service.

Since it ran a bit fast, it was adjusted minimally, so that the mean deviation is pretty low now:

The ampliture readings refer to the standard lift angle of 52°. It's not known, what is the real lift angel of the PUW 1075.

But according to the timegrapher result, this movement seems to have a large position error, maybe caused by a shock. Otherwise the rates are absolutely OK for a movement of that tiny size.

Timegrapher result



horizontal positions
dial up -23 s/d 225° 0.1ms
dial down +16 s/d 239° 0ms
vertical positions
crown right (12 up) +2 s/d 201° 0.6ms
crown up (3 up) +2 s/d 206° 0.2ms
crown left (6 up) -33 s/d 196° 0.1ms
crown down (9 up) -20 s/d 197° 0.3ms

Technical data

Manufacturer:PUW
Caliber:1075
Number of jewels:17
Escapement:Pallet lever
Balance types: Nickel anular balance
Shock protection(s): Rufa-Anti-Shock
Balance bearing / direction hairspring:Counterclockwise
Moveable stud:yes
Adjust mechanism:Hairspring key
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:3 hole(s)
Features:h,m
A/h:21600
Size:5 1/2''' (measured: 13,0 x 15,2mm)
Literature: Flume: K3 77

Usage gallery

Dugena ladies' watch

Dugena ladies' watch

Many thanks go to Gudula Stein for the donation of that movement and the watch!