Parrenin 660

 
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Parrenin 660

Description

The french Parrenin 660 (marked as “CHP 660”), which was obtained in Parts by Emes, finished there and used under their caliber numbers Emes 17 and Emes 17a is a 10 12 ligne pin lever movement with balance bridge.

Version with Rufa shock protection

Version with Rufa shock protection

It was probably released around 1970 and was available with and without shock protection. The Emes 17a used a german Rufa-Anti-Shock bearing for the balance wheel.

base place

base place

This movement is a simple pin lever construction.

You find ruby bearings only for the balance, all other bearings are made of brass.

On the left, you see the plastic bearing block for the yoke winding system. Using plastic was very popular these days. Unlike the Parrenin 66 it uses a screwed crown wheel.

gear train

gear train

There’s the standard gear train for a pin lever movement with directly driven center minute, third wheel, seconds wheel and escape wheel.

side view of the gear train

side view of the gear train

The two-leg anular balance is beared below the balance bridge. It regulates a pin lever movement with a very flat, top-down lever, on which its pins point to the base plate.

The balance beats with 18000 A/h and can be adjusted with the hairspring key only. There were versions with and without moveable hairspring stud, which allows to minimize the beat error.

Parrenin 660: Dial side

Parrenin 660: Dial side

On the dial side you see the yoke winding system, whose cut out setting lever is also the setting lever spring and the cap for the change wheel. A very simple, but really clever detail.

dial side, version with shock protection

dial side, version with shock protection

Technical data

Manufacturer:Parrenin
Caliber:660
Number of jewels:5
Escapement:Pin lever
Balance types: Nickel anular balance
Shock protection(s): none
Rufa-Anti-Shock
Balance bearing / direction hairspring:Bridge
Moveable stud:no/yes
Adjust mechanism:Hairspring key
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel, center minute wheel, mainspring barrel
Construction type:pillar construction
Winding mechanism:yoke winding system
Setting lever spring:1 hole(s)
Functions:hour, minute
A/h:18000
Size:10 1/2''' (measured: 23,2mm)
Inventory number:19003
This movement in two versions, released as Emes 17 and Emes 17a, was donated by Christoph Reiner. Thank you very much for your support!