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Clocks, Watches/franz hermle 130-070 running slow

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Question
John

We have a clock (purchased originally by my late mother-in-law) which contains a Franz Hermie 130-070 movement. It is of the type with a vertically pivoted balance wheel with a spiral spring on the upper spindle.
The adjustment for timing appears to be a ring on top of the balance wheel with 2 weights below which as it is moved anti-clockwise (viewed from the top) the weights are moved inwards, thus speeding up the clock.
The problem is that the clock is running slow and the adjustment ring appears to be at the extreme anti-clockwise position (ie the weights are up against the 2 spokes of the balance wheel)
Suggestions as to how the clock can be adjusted to run faster would be greatly appreciated.
Thank you

Chris

Answer
Chris, the Hermle movement you have has what is called the floating balance regulator.  You are correct in that moving the pointers on the wheel in an anti-clockwise rotation speeds up the clock.  This is an adjustment that can be made by the clock owner.  Further service has to be done by a clockmaker that is experienced in working on this type of regulator.  The first thing I do is to clean it.  I remove it and dip it in denatured alcohol or a commercial product called "One-Dip".  Then I gently blow dry it and have to be certain all liquid and contaminates have been removed from the vertical tube.  This tube has a jewel in each end which rotates on a wire.  When there is debris in the jewels it will affect the timekeeping.  However, this usually speeds up the clock.  There are other factors that cause regulation.  After I have exhausted the cleaning and adjustment, I will remove or install the small plugs in the balance wheel rim.  This takes special tools, experience and a protected work surface, as the plugs are miniscule and can be easily lost.  Sorry I cannot help you more, but that's about all I can offer.


John Newman
THE VILLAGE CLOCKSMITH
Old Prattvillage
Prattville, Alabama


Chris, I neglected one important item.  When I work on one of these movements I do service the regulator.  However, I also do the standard service to the complete movement.  The movement should be in good working condition as far as being clean, having the proper adjustments and lubrication.  Sometimes gummy grease in the mainspring barrels will affect the timing and it is usually erratic.

John Newman  

Clocks, Watches

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John Newman

Expertise

As much as I would like to offer values of clocks, I am not a certified appraiser and will not venture into giving an unresearched guess. There is very little published information on what I consider to be the value of "modern production clocks". Considerations are what the clock originally sold for, the condition of the case and movement, and particularly the area in which you live, the demand and the economy. ALSO, WATCHES ARE NOT MY FIELD. However, I can advise the clock owner on proper maintenance of a clock to keep it running, small corrections and adjustments and how to move a clock without damaging it. I can also advise on obtaining parts for clocks. It helps if you can send any information on the clock movement which is usually found on the back plate of the movement. I have been a clockmaker for about 35 years and was plant engineer in the mid 90's and later operations and engineering consultant at Emperor Clock Company in Fairhope, Alabama. I now have my own clock shop.

Experience

One of my greatest accomplishments was traveling to China to assist a clock factory in building clocks to the standards which we required. With the proper specifications and quality control, some beautiful clock cases were built. The factory people from the wood carvers to the plant manager were very congenial, friendly and I left a lot of wonderful friends when I returned from my trips.

Organizations
NAWCC (National Association of Watch and Clock Collectors) 30 years Prattville, Alabama Chamber of Commerce

Publications
Horological Times, a publication of the American Watch and Clockmakers Instute. Collaberated column author, with Photos and ideas for clock movement conversion article.

Education/Credentials
Associate of Science Mechanical Engineering Technology Emperor Introductory Clock Repair (Eventually taught a portion of the class after becoming employee)

Awards and Honors
Small Business of the Quarter (Prattville, Alabama) Leadership Class of 2009 (Autauga County, Alabama)

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