PUW 80

 
PUW 80

PUW 80

Description

The PUW 80, launched in the late 1950s, was a common tonneau movement in ladies’ watch size with a width of 6 3/4 lignes, so it already belongs to the larger tonneau movements.

base plate

base plate

As it should be for a quality product, all important bearings contain rubies. Since the mainspring barrel and the directly driven center minute wheel get enough force, ruby bearings are not neccessiary for them, and instead, the two escape wheel bearings got a cap jewel each, which is more useful.

gear train

gear train

The gear train follows the common scheme with directly driven center minute wheel, third wheel, seconds wheel and the final large escape wheel.

side view of the gear train

side view of the gear train

Due to the large diameter of the escape wheel, a two-storey construction was neccessiary, where the bearing of the seconds wheel is above the teeth of the scape wheel.

The screw balance of the PUW 80 is beared in two Ruby-Shock bearings and beats with 18000 A/h, whose frequency can be adjusted with a long regulator arm.

As escapement, a classical swiss pallet lever escapement was used.

PUW 80: Dial side

PUW 80: Dial side

On the dial side, you can see the yoke winding system, the shock protection bearing for the balacnce wheel and the cap jewel for the escape wheel.

In the lab

The specimen shown here was gummed and dried out and got a minor service. Afterwards, it worked again with an amplitide of more than 200°.

Technical data

Manufacturer:PUW
Caliber:80
Number of jewels:17
Escapement:Pallet lever
Balance types: Nickel screw balance
Shock protection(s): Ruby-Shock
Balance bearing / direction hairspring:Counterclockwise
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:4 hole(s)
Functions:hour, minute
A/h:18000
Size:6 3/4''' (measured: 17,9 x 15,0mm)
Literature: Flume: 1957 47
Inventory number:20029

Usage gallery

Arowe ladies' watch

Arowe ladies' watch

This movement with the watch is a kind donation from R.Ludwig. Thank you very much for your great support of the movement archive!