assessing pocket watch problems - sanjacinto139.com · winding • broken mainspring • very...

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Assessing Pocket Watch Problems Shaun Clarke NAWCC San Jacinto Chapter 139

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Page 1: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

AssessingPocketWatchProblemsShaun ClarkeNAWCC San Jacinto Chapter 139

Page 2: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

Content

Giving it the Once Over

Winding and Setting

Getting Inside

Under the Hood

It Runs, but…!

Page 3: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

Assessment,notValuation• Today’s presentation covers assessing condition and common problems with pocket watches.

• It does not cover valuation or pricing of pocket watches.

• Refer to the presentation “Determining Pocket Watch Quality” by Mr Artzner in the Education Section of our Chapter website.

Page 4: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

ToolTime• Case Opening Tool

• Loupe

• Case Knife

• Toothpicks

• Tweezers

• Assorted Keys

Page 5: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

GivingittheOnceOver• Open Face

• Sidewinder

• Hunting Case• Hinges• Cover

Page 6: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

GivingittheOnceOver• Case Material

• Nickel Alloy• Silver• Gold‐Filled (YGF)• Solid Gold

• Brassing

• DentsBrassing on YGF case

Page 7: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

GivingittheOnceOver• Bow

• Crown• Stem/Sleeve

BowCrown

Bow and crown missing, stem present

Page 8: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

GivingittheOnceOver

• Bezel

• Crystal• Condition• Material• Yellowing

Bezelmissing

Thick Glass Crystal

Yellowed Plastic Crystal

Page 9: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

GivingittheOnceOver• Hands

• Missing• Mismatched• Condition

• Face• Metal• Enamel

• Cracks / Chips Hairlinecrack

chip

Rust on hands

Page 10: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

Winding• Pendent wind • Key wind

Hole for key

No crown

Page 11: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

Winding• The Overwound Misnomer

• When a manual watch is wound completely, you will no longer be able to rotate the crown. That is fully wound, not overwound.

• If the watch is not running when fully wound, it is indicative of other issues.

Page 12: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

Winding• Broken Mainspring

• Very common.• Slight resistance when winding and the watch quietly "clicks" every so often, seemingly releasing the slight tension.

• Parts still available for common models.

Page 13: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

Setting• Pendant‐Set

Crown pushed “in” to wind mainspring

Crown pulled “out” to set hands

Page 14: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

Setting• Pendant‐Set problems

• Won't "click" from one position to the other

• Stem pulls out completely• May indicate an issue with damage to the sleeve

• Watch does not wind, or hands will not set• Indicates sleeve may need to be adjusted (with a sleeve wrench)

Page 15: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

Setting• Key‐Set

• From front• From back

Hands are set with key on square centre arbor

Page 16: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

Setting• Lever‐Set

• Railroad watches

Remove bezel, pull lever out and turn crown to set hands 

Page 17: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

Setting• Pin‐Set

• More common on European watches

Press and hold in the ‘pin’ while 

turning the crown to set

Page 18: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

GettingInside• Screw‐off back

• No hinge on the back• No visible "notch" in the seam for a case‐knife.

• Visible seam around rim of case back

Two seams

Page 19: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

GettingInside• Snap‐off back

• No hinge on the back• Visible seam with notch for case‐knife.

Notch(look carefully!)

Page 20: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

GettingInside• Hinged‐back

• Hinge visible on back and/or front

• Look for the notch for thumbnail or case‐knife

Thumb Notch

Hinges (front & back)

Page 21: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

GettingInside• Swing‐out

• No seams around the back cover i.e. back cover and body all one piece

• Remove front bezel and look for swing‐out movement

• ALWAYS pull out winding stem before lifting the movement out of the case.

One seam only

Hinge

Thumb‐nailnotch

UP!

Page 22: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

UndertheHood• Rust

• Superficial• Terminal

• Generally Dirty• Very common• Oil dried up• “WD40’d”

Surface Rust

Don’t even go there!

Page 23: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

UndertheHood• Missing/Wrong Parts

• Case Screws• Other Screws

Page 24: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

UndertheHood• Missing/Wrong Parts

• Balance• Regulator• Hairspring• Mainspring barrel• Jewels

Page 25: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

UndertheHood• Pivot Holes

• Oval pivot hole• Cracked jewels

• Screw set• Friction fit

Page 26: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

UndertheHood• Escapement Problems

• Balance Wobbles• Broken Balance Staff (very common)• Broken Jewels

Image from VintageWatchstraps.com © David Boettcher  Balance Staff Pivot

Balance Hole Jewel

Broken pivot

Page 27: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

UndertheHood• Escapement Problems

• No pallet movement• Missing/Broken Roller Table Jewel

Roller TableJewel

Image from http://en.wikipedia.org/wiki/Lever_escapement

Page 28: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

ItRuns,but…!• Poor Amplitude

• Set Mainspring

Page 29: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

ItRuns,but…!• Poor Amplitude

• Power train problem• Rust?

• Pivot Issue• Pivot condition• Dirty / old oil

Squared off  pivot end

Grooves

Pivot Damage

Page 30: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

ItRuns,but…!• Stops in various positions

• Pivot condition/damage• Balance Hole Jewel damage

Bent pivot

Page 31: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

ItRuns,but…!• Hands do not move (or sluggish)

• Loose Cannon Pinion• Minute Wheel problem

Cannon Pinion

Minute Wheel

Page 32: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

ItRuns,but…!• Poor Timekeeping

• Surface rust on Hairspring• Regulator pins adjustment• Hairspring damage• Magnetism

Page 33: Assessing Pocket Watch Problems - sanjacinto139.com · Winding • Broken Mainspring • Very common. • Slight resistance when winding and the watch quietly "clicks" every so often,

Conclusion• Be methodical ‐ have a system

• Recognize;• Easy/low cost to fix• Complex/high cost to fix

• The most common issues are;• Dirty and/or Old Oil• Broken or Set Mainspring• Broken Balance