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Clocks, Watches/Seikoasha Regulator Clock


I bought a Seikosha (sp) regulator wall clock at a thrift store.  After cleaning the movement in a soap and water bath (it felt like it had seen a fire) and oiling the movement with clock oil (obtained earlier for use on other clocks) the clock works run.  However, even with the pendulum adjustment as short as possible the clock loses about 2hr every 12 hrs.  Is there another adjustment that I can make or should I look into another deeper cleaning of the works?

Mike, 10 minutes per hour is a major regulation problem.  A normal pendulum adjustment would not be able to correct this.  My first question is it the original pendulum to the clock?  Does the pendulum bob center in the front window?  If you could send me a photo of the clock showing the pendulum hanging I migh be able to help you further.  My clock shop email address is below.  I have a couple of clocks which I think might be similar to yours, one being a Seiko and I am not sure of the other right now.

As far as cleaning, a clock should be cleaned throughly and we recommend proper cleaning solutions, not soap and water.  Some soaps will leave residue, but if yours was cleaned throughly it might be okay.  When we clean a clock we dismantle it to insure all areas are covered, such as mainsprings, centershaft and hour tube, bushings and levers.

If it is running, the cleaning and oiling would have nothing to do with the problem of running slow.  If a suspension spring is too thin, the pendulum will swing further, slowing down the clock.  But not the rate you mention.   Right now I just don't know.  If it is running too fast, there are more common causes for that.

Send me a photo.

John Newman
The Village Clocksmith
Vintage Emperor Clock Consultant
Located in Old Prattvillage
Prattville, Alabama

Note concerning questions not related to Allexperts:  Because of my commitment to answering Allexperts questions within a prescribed time limit and the large backlog of clock work at my shop, I regret that I cannot answer personal email questions on a timely basis, other than Allexperts follow up questions.  I will try to answer these emails as soon as I can. Thank you for your patience.  

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John Newman


As I am not a certified appraiser I do not give values of clocks over the Internet. There is very little published information on what I consider to be the value of "modern production clocks". However, 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. As clock case model label numbers are difficult to relate to the movements, it is helpful if you can give me the information usually found on the movements themselves. Modern clock movements usually have the information on the back plate of the movement. I have been a clockmaker for about 40 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 in Prattville, Alabama.


One of my greatest accomplishments was traveling to China to assist a clock factory in building clocks to the standards which we required at Emperor. 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.

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

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

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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