Monday 1 February 2016

Jahresuhrenfabrik Model No 197 circa 1910

  This clock is shown in the Jahres-uhr catalogue as model number 197, stating it is of small size suitable for writing tables. The clock is original and complete with matching serial numbers on the movement and pendulum.
  As can be seen in the top left image teeth were torn off the mainspring barrel at  some time as the mainspring let go releasing all of its energy in one go.
  When the movement was stripped down and examined Lady luck was on my side  with no other damage, not even any bending  of the trains wheels or arbors. On opening the barrel the tail of the mainspring had broken off, leading to scoring of the inside as  the spring thrashed around violently as it unwound.
  After being  in the ultrasonic cleaner the movement was assembled dry with a new mainspring,  I tested it with the anchor removed to make sure non of the wheels were sticking and that it ran down from a couple of clicks on the mainspring smoothly with no binding but a clean linear motion until completely unwound.
   With the anchor back in, the rest of the clock was assembled, set up and put in beat with a new suspension spring fitted.


Information.
  • Height 240mm,Width 150mm.
  • Pendulum diameter, 63mm.
  • pendulum weight, 215 grams
  • dial diameter, 65mm.
  • Weight, 1372 grams.
Thanks for looking

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