Gruen 849

 
Gruen 849

Gruen 849

Description

In der Literatur ist das rechteckige Gruen 849 weitgehend unbekannt. Es wurde um 1920 im Auftrag von Gruen von Charles Hahn in Landeron gebaut. Mit seiner Guillaume-Schrauenunruh, mit 16 Steinen und mit 4 Adjustments ein qualitativ recht hochwertiges Werk.

In literature, the rectangular Gruen 849 is mostly unknown. It was made around 1920 on behalf of Gruen by Charles Hahn in Landeron. With its Guillaume screw balance, with 16 jewels and four adjustments, it was a high quality movement.

base plate

base plate

The rectangular shape allowed a balance and mainspring barrel with large diameters, which was positive for the precision and power reserve.

gear train

gear train

The gear train is standard: Mainspring barrel, directly driven center minute wheel, third wheel, seconds wheel and steel escape wheel.

The Gruen 849 is constructed service-friendly, there are nowhere more than two gears under one bridge, and the escape wheel has even got its own cock.

side view of the gear train

side view of the gear train

The non shock protected slotted Guillaume screw balance beats with the usual 18000 A/h. The effective lenght of the hairspring can be adjusted with a long regulator arm and a scale.

Gruen 849: Dial side

Gruen 849: Dial side

The only thing, which is a rather simple construction, is the rocking bar winding system and

Technical data

Manufacturer:Gruen
Caliber:849
Number of jewels:16
Escapement:Pallet lever
Balance types: Nickel screw balance (two legs)
Shock protection(s): none
Balance bearing / direction hairspring:Counterclockwise
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:rocking bar winding system
Functions:hour, minute
A/h:18000
Size:6 1/2 x 12''' (measured: 15,6 x 27,8mm)
Inventory number:20038

Usage gallery

Gruen gents watch  (case missing)

Gruen gents watch (case missing)