Femga 520

 
Femga 520

Femga 520

Description

In the 1950ies, there were still made many true pallet lever movements in France. With directly driven center second, screw balance and missing shock protection it was still quite state of the art, but not overly modern.

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In the early fifties, when this movement was launched in Annemasse/France, movement with a two-storey construction were en vogue: The directly driven minute wheel was beared under an own bridge, while on top of it, the third wheel and the directly driven fourth wheel were located:

gears and trains

gears and trains

The meaning of the code “407” is unknown, but it cannot stand for monthy and year, since in the Flume Werksucher before 1950 this movement was not listed.

side view of the gears

side view of the gears

This construction is a pleasure for a watchmaker, since there are never more than three gears at the same time under one bridge.

The two-leg schrew balance which beats slowly with 18000 A/h is not yet shock protected.

base plate

base plate

The minute wheel is only beared on its top side (on the minute wheel bridge), on its lower side, on the base plate, there’s no bearing ruby, but both bearings of the escapement wheel are covered with cap jewels.

Femga 520 dial side

Femga 520 dial side

On the dial side, you see the cap jewels of the balance and the escapement wheel (without shock protections) as well as the yoke winding system.

On the specimen shown here, the setting lever spring is broken, a common problem on old movements.

Technical data

Manufacturer:Femga
Caliber:520
Number of jewels:17
Escapement:Pallet lever
Balance types: Nickel screw balance
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:SCD
Functions:hour, minute, second
A/h:18000
Size:10 1/2'''
Literature: Flume: K2

Usage gallery

Engo mens' watch

Engo mens' watch

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