Vienna Regulator

These clocks are generally very well made and capable of great accuracy in timekeeping as they use a dead beat escapement,  This particular vienna regulator  has two trains, strikes ting-tang quarters and used mainsprings rather than weights for power. The pendulum is a decorative rather than functional grid-iron type.

Before repair.

This is the vienna regulator clock as received, except that I had removed the pediment, before any work was done on it, somewhat dusty and with old polish around the edges of the glazing. The central lower finial is missing as is the decoration from the top of the pediment. The owner did not want these replacing as they would prevent the clock fitting between the furniture and the ceiling, the clock is about 3’8” tall The case is unusual in that instead of a single rectangle of glass in the door it has an 8” round convex glass in front of the dial and a separate shell shaped pendulum aperture.  The rest of the door is carved with what I take to be stylised fish and seaweed. The decorative veneering is in walnut.

The clock movement was very dirty with old oil and dust over everything.  The single rose and letters RSM identify the clock as being by R S Muller of Mulheim an Donau, its serial No. is 10623 and the work group who assembled it is No. 23; the work group number appears on most of the parts of this clock. There are two snails on the hour wheel and two tails on the rack, one each for the quarters and the hour. A pin on the minute wheel lifts one of the clock’s strike hammers clear at the hour.
There have been various repairs made including a soldered chime hammer, and a soldered strike rack spring. The spring on the left hand side of the movement, used to assist the lifting piece, has broken away.

In this vienna regulator the pallets were deeply grooved where the escape wheel acted on them, fortunately they are of the Vulliamy type i.e. fitted to their frame with clamps. The escape wheel itself had some bent teeth.

Movement repair.

Apart from the usual strip down, cleaning, assembling, lubricating and testing the repair of this clock involved various extra operations:

Repair 1: Refitting one clock hammer to its collet correctly after removing the old solder

Repair 2: Making two new actuating springs for the strike mechanism in the same style as the originals.

Repair 3: Straightening the escape wheel teeth and ‘topping’ them all to the same height.

Repair 4: Removing the pallets from their frame, setting them up in the lathe to have new surfaces ground at the same angles as the originals, polishing these surfaces, refitting them to their frame and adjusting the action of the escapement for correct lock and even drop as each tooth is released.

Case work repair.

Not a lot required here after removing dust from wood and old polish from glass then repolishing with beeswax.

Repair 1: One of the door hinges had a pin which was half out of the hinge, this had to be pushed back to its correct location and fixed there.

Repair 2: Reattach loose finials.

Repair 3: Relacquer the bezel around the dial.

Repair 4: Relacquer the pendulum.


Time keeping and appearance both fine.

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