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Baumgartner 911

 

Baumgartner 911Baumgartner 911

Description

The Baumgartner (BFG) caliber 911 is modern built ladies' watch movement, which contains in the version with date indication a sophisticated date indication mechanism.

Its balance is secured in two KIF Protechoc systems (or without shock protection and with only one single bearing ruby) and contains a finger for the escapement. The escapement anchor in located in one jewel on the movement side; on the dial side, there's just a metal bearing. On this way, the unusual number of five jewels on the shock protected version is achieved.

The center second, if used, is driven directly; the minute wheel is located decentrally, which allowes a flatter construction and larger diameters for balance and mainspring. The hands are driven on the dial side by the mainspring.

The winding mechanism is a yoke winding mechanism, which is normally a feature of "better" movements, but the BFG 911 is in fact a "better" pin lever movement, too, which sometime even reminds of a anchor movement.

version without shock protectionversion without shock protection

 

Baumgartner 911 dial sideBaumgartner 911 dial side

The date mechanism is unusually complicated, with gears, that contains teeths in different lengths, with springs and moveable jumpers. Because of this, the date switches semi-fast in only 45 minutes and can be corrected semi-fast, too, by turning back to 10:30pm.

date mechanismdate mechanism

dial side of version without date and second indicationdial side of version without date and second indication

 

 Technical data

ManufacturerBaumgartner
Caliber911
Number of jewels1,5,17
Escapementpin lever
BalanceNickel
Shock protection(s)KIF Protechoc,none
Balance cock directioncounterclockwise
Hairspring studmoveable
Regulator typeHairspring key
Movement constructionFork
Escapement wheel, Fourth wheel, Third wheel, Large driving wheel, Mainspring barrel
Winding mechanismyoke
Setting lever spring1 holes
Features(SCD,QG,RDR)
FunctionsHour, minute(,second, day)
Beats per hour21600
Size81/2''' (measured: 19,1 mm)
Baumgartner 911BaumgartnerBaumgartner9118 1/2''''''Baumgartner 9111,5,17 Jewels, 8 1/2'''''', 21600 A/h, (SCD,QG,RDR)
Factsheet

 

Usage gallery

Royal Calendar ladies' watchRoyal Calendar ladies' watchGeeta ladies' watch  (dial only)Geeta ladies' watch (dial only)

 

Links

 

This movement in the version without date and center second was donated by Klaus Brunnemer. Thank you very much!