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Felsa 146 ?

 

Felsa 146Felsa 146

Description

The old ladies' watch movement shown here was identified by a watchmaker as a Felsa 146. However, there's a small insecurity, since the lower dial foot is according to the Flume K1 Werksucher a little bit more distant to the balance, than on this movement. This leads to the question mark of this page.

This movement was available in different versions, differing by color and for example by the escapement wheel cap jewel, which was, if avaibable, framed by a very nice silver colored plate like on old pocket watch movements.

All versions have got the same balance component in common: The slit bimetal balance beats with contemporary 18000 A/h. The effective length of the hairspring is set by a long regulator arm. The escapement controls a conventionally constructed pallet anchor movement with nicely old-fashion designed bridges.

version without escapement wheel cap jewelversion without escapement wheel cap jewel

With or without cap jewel for the escapement wheel - this very well made movement is very beautiful!

GrundplatineGrundplatine

The main plate reminds a lot of those of an old pocket patch movement.

Felsa 146 dial sideFelsa 146 dial side

On the dial side, there's no surprise. This movement uses a yoke winding system and the non-shock-protected balance runs in bearings with cap jewels.

On the silver-colored version, the digits "43" are stamped onto the dial side - maybe this is a hint for the final identification of the real caliber number?

 

 

 Technical data

ManufacturerFelsa
Caliber146
Number of jewels15,16
EscapementAnchor with pallets
BalanceBimetal screw balance
Shock protection(s)none
Balance cock directionclockwise
Hairspring studfixed
Regulator typeLong regulator arm
Movement constructionFork
Escapement wheel
Fourth wheel, Third wheel, Center wheel
Mainspring barrel
Winding mechanismyoke
Setting lever spring3 holes
FunctionsHour, minute
Beats per hour18000
Size73/4''' (measured: 17,3 mm)
Image in Flume Werksucher 1947 20
Felsa 146FelsaFelsa1467 3/4''''''Felsa 14615,16 Jewels, 7 3/4'''''', 18000 A/h
Factsheet

 

 

Timegrapher output

golden-colored version

This specimen was cleaned and olied. The timegrapher outputs for this, more than 60 year old movement, are impressive!

crown rightcrown right crown topcrown top crown leftcrown left crown bottomcrown bottom 
dial topdial top dial bottomdial bottom 

 

defective, silver-colored version

That's the way, a timegrapher output can look, when you test a movement, where "only" one of the balance pivots is bent.

crown rightcrown right crown topcrown top crown leftcrown left crown bottomcrown bottom 
dial topdial top dial bottomdial bottom 

 

 

Usage gallery

Supera ladies' watch  (dial only)Supera ladies' watch (dial only)

 

 

This movement in the silver colored version with 15 jewels was donated by Klaus Brunnemer. Thank you very much!