Here is a Jahresuhrenfabrik (JUF for short) 400 day clock made around 1902. It has a disc pendulum, small dial, and delicate spade hands. It has beautifully turned finials above the dial.
PATENT
ANGEMELDET
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PATENTS
APPLIED
This movement is identified as being Horolovar back plate number 1471.
I repaired this clock, and fixed some problems caused by previous repair work.
The picture below shows the mainspring after removal from the clock. Note that it is cone shaped. It should be flat.
Here is the new mainspring that I installed:
The “arch” of the clock (the decorative part with the finials above the dial) was fastened to the clock with GLUE, as one screw hole didn’t have a shoulder for the screw to bear on. I inserted a bushing in that hole to repair it.
This clock has an unusual anchor (the part that goes back and forth as the clock ticks). Most JUF clocks have a solid-body anchor, but this one has adjustable pallets like most other makers use. Here is a photo:
Repair job 6585. I polished five pivots. The 0.004 inch thick suspension spring was good, and I adjusted it to hang straight in the upper block and adjusted the height of the fork. The hand set tension washer had a hole that was too big, causing it to bear on the front plate, causing friction that would stop the clock. I installed a new tension spring. I installed a Horolovar 19 x 36 mainspring.
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This is ONLY FOR A QUALIFIED CLOCK REPAIRER to adjust.
whats the round adjuster piece for the rocker bearing on the back plate for? no one ever mentions it ?
Oops I forgot to mention the style of rachet and click assembly which also means that it could be a Huber manufactured for Hauck since they did produce clocks for Hauck for a few years
Hi Bill listing some points without going into detail how I identified it’s not a JUF
Style of Crown finals / suspension bracket and block / dial style / pillar finals / square pillar supports at bottom / base style / pendulum with screws/ size of pendulum / Parent stamp on the back plate
Because it has adjustable palets I will say it’s a Hauck
Hope someone else will share their views.
Thanks, Luke – that explains why it has adjustable pallets. I hope there will be an update to the Horolovar Repair Guide that will contain all the newest research.
Bill this is not a JUF clock it’s either a Andreas Huber or Philip Hauck if you join the NAWCC forum you will be able to identify the clocks you come across easily.