HB 313

 
HB 313

HB 313

Description

At the beginning of the 60ies, the movement manufactury Hermann Becker of Pforzheim, Germany released their last selfwinding movement, the caliber 313, called “Ultramatic”.

The HB 313 is a 11 12 ligne selfwinding movement whose rotor winds in both directions with a rocking bar winding system. It contains a contemporary two-leg ring balance, which is beared in two Antichoc S65 (or Rufa-Anti-Shock on the movement side) shock protection systems. The hairspring is connected to a moveable stud and can be regulated by a short regulator arm.

The selfwinding mechanism features a rocking bar changer, which drives the crown wheel via a friction clutch. This clutch decouples the selfwindig mechanism when the movement is manually wound.

The 25 jewel movement has got a directly driven center second hand and on the dial side a yoke winding mechanism and a number of cap jewels to reach the high nimber of 25 jewels.

The large date ring advances slowly and can be corrected semi-fast by turning the time back and forth.

During its production time, the movement was changed a bit, the (probably) older version which was marked with the old “HB” marking, had a massive balance cock.

movement view of the old version

movement view of the old version

movement view without rotor

movement view without rotor

movement view without rotor of the old version

movement view without rotor of the old version

selfwinding mechanism

selfwinding mechanism

without selfwinding mechanism, old version

without selfwinding mechanism, old version

empty main plate, old version

empty main plate, old version

HB 313 dial side

HB 313 dial side

dial side view, old version

dial side view, old version

Technical data

Manufacturer:HB
Caliber:313
Number of jewels:25
Escapement:Pallet lever
Balance types: Nickel anular balance
Shock protection(s): Antichoc S65
Rufa-Anti-Shock
Balance bearing / direction hairspring:Clockwise
Moveable stud:yes
Adjust mechanism:Hairspring key
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel
  • center minute wheel
  • mainspring barrel
Winding mechanism:yoke winding system
Setting lever spring:1 hole(s)
Features:SCD,QG,RDR,AUT
Functions:hour, minute, second, day, selfwinding
A/h:18000
Size:11 1/2''' (measured: 25,4mm)
Literature: Flume: K3 207

Usage gallery

Anker selfwinding divers' watch

Anker selfwinding divers' watch

Ordiam gents watch  (dial only)

Ordiam gents watch (dial only)

Links

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