Peseux 170

 
Peseux 170

Peseux 170

Description

A rather early movement, whose gear train and gear positioning clearly identifies it as predecessor of so famous movements like the Peseux 320, is the Peseux 170, a 16 jewel pallet lever movement in the standard size of 10 1/2 lignes diameter.

base plate

base plate

The base plate shows, that all important bearings of this movement contain rubies. The minute wheel bearing contains a ruby only on the movement side, where it can easily be seen.

gear train

gear train

The Peseux 170 uses the conventional gear train with directly driven center minute wheel, third wheel, seconds wheel at 6 o’clock (where here doesn’t carry a decentral second hand) and finally the escape wheel.

side view of the gear train

side view of the gear train

A feast for the eyes is the golden Glucydur screw balance, which not only runs in two Incabloc shock protections (which was not self-evident in the 1940s!), but can also be adjusted with a long regulator arm to achive the precise beating rate of 18000 A/h.

As escapement, a swiss pallet lever escapement is used.

Peseux 170: Dial side

Peseux 170: Dial side

The dial side has got an interesting finishing.

Besides that, you can easily spot the Incabloc shock protection and the large setting lever spring of the yoke keyless works.

In the lab

The specimen of the archive was probably a replacement movement for a ladies' pendant watch and is much more modern than the looks of dial and hands.
It came without case into the lab and got a simple service.

Timegrapher result

The more than 70 years old movement, which ran too slow at the beginning, was adjusted and can now show, to what it was capable in terms of precision.

horizontal positions
dial up -10 s/d 293° 0.4ms
dial down +-0 s/d 281° 0.5ms
vertical positions
crown right (12 up) -8 s/d 243° 0.8ms
crown up (3 up) -5 s/d 252° 0.4ms
crown left (6 up) -16 s/d 257° 0.1ms
crown down (9 up) -7 s/d 241° 0.6ms

Technical data

Manufacturer:Peseux
Caliber:170
Size:10 1/2''' (measured: 23.3mm)
A/h:18000
Number of jewels:16
Escapement:Pallet lever
Balance types: Glucydur screw balance (two legs)
Shock protection(s): Incabloc
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:5 hole(s)
References: Ebauches: 1949 I 45
Feilner: 19
Flume: 1947 34
Inventory number:21018

Usage gallery

anonymous ladies' pendant watch  (without case)

anonymous ladies' pendant watch (without case)