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Clocks, Watches/About the word Jewel
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Question
I was wondering what it means when on the clock it says a number then jewel. Can you tell me what that means..
Hi Neal,
"Jewels" are jeweled bearings. On a clock, these are usually the bearings for the upper end of the gear train, specifically the bearings for the verge and/or escape wheel. If you look into the back of the clock, you will see them on the upper back main plate of the movement. They look like small red (occasionally clear) glass circles.
These jewels are synthetic sapphire disks with precise holes drilled through them. The pivots (ends of the gear shafts) turn in these holes. Their purpose is to provide a bearing surface which is very hard and smooth, wears less, and provides less friction than simple clock bearings, which are merely holes in the brass main plates.
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Answers by Expert:
Martin Meyer
Expertise
Can answer repair and service questions for most types of clocks, antique and modern, mechanical and battery. NO watches, appraisals, identification, history, dating, or questions about cuckoo clocks. Website for Modern and Antique Clock Repair: Clockmasteronline.com
Experience
24 Years as owner and repairman of clock repair business, 28 years in the field. Factory Independent Service Center for Howard Miller, Ridgeway and (formerly) Sligh Clocks. Specializing in Fine Antique Longcase (grandfather) clocks. Clock repair Website: (Please remove "Not" from the address - this is a spam protection): www.NotClockmasteronline.com
Organizations
AWCI (American Watchmakers and Clockmakers Institute) and NAWCC (National Association of Watch and Clock Collectors)
Publications
Am also an Expert in the "AllExperts-Antiques-Antique Clocks" Category.
Education/Credentials
Trained by a former Rolex Asia watchmaker, and by a Master Watchmaker/Clockmaker.
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