Gustav Becker Wall Clock. c.1890

One of my best spring-wound wall clocks. Gustav Becker clocks are a real treasure.

This one is in excellent condition. As far as I can see, it’s all original. Porcelain face, 8 day Time & Strike.

During the process of dismantling the movement for cleaning, I noticed something that I missed when the movement was assembled. The fly fan that governs the strike speed had been replaced and repaired with a makeshift effort fabricated from a small piece of sheet brass (see photo A).

PHOTO A: The fly fan the clock came with is on the right; the fan I modified to work is on the left.

This fundamental mistake was made during a previous attempt to repair the clock. It was poorly aligned and it anchored the fan to the wheel.

Photo B: My solution to the fly fan problem

As you can see in the photos, a tab was fabricated and bent through the spoke of the wheel. This prevented the fan from spinning on the wheel shaft.

Fly Fan

The fly fan must be able to spin with a friction fit. This is important because the inertia that builds when the fly stops can shear off a gathering pallet or a stop pin.

I found a spare fan and with some small modifications was able to fit a new fan and complete the repairs (Photo B).

Strike Hammer

One major problem I encountered when reassembling the movement was to synchronize the strike hammer to rest between the lifting pins after it completed its strike cycle. Some movements have the gears marked; this one did not and I could not figure out an easy way to sync the gears other than taking the plates off (about 10 times!!) and making further adjustments. I eventually got all in working order, but surely there is an easier way.

If anyone reading this has advise that might make a similar repair simpler in the future, please let me know!

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