Restoring an Ansonia A movement requires careful attention to the escapement and the physical alignment of the pendulum components. Experts suggest that diagnosing issues with irregular beats often starts with a close inspection of the relationship between the crutch and the leader. Ensuring the mechanical components move freely without binding is essential for the long-term reliability of these American movements.
Diagnostic Checklist: Crutch and Escapement
- 1. Crutch Rod Free Play:
- Repairers suggest that there should be just enough free play between the pendulum hanger rod and the crutch loop to prevent binding. A common measurement for this gap is approximately .15mm, or the thickness of a folded piece of copy paper.
- 2. Escape Wheel Condition:
- Restorers recommend checking the escape wheel teeth for hooking, which can cause erratic behavior. If teeth are bent, they can often be straightened using smooth-jawed pliers, pulling straight away from the wheel.
- 3. Verge and Pallet Alignment:
- Experts suggest that if the drop off the exit pallet is excessive, moving the verge closer to the escape wheel may help even the beat. When installing a replacement wheel, you may need to grind the entrance pallet or bend the exit pallet to ensure correct spacing across the teeth.
Hardware and Bezel Repairs
Physical repairs to the clock case, such as reattaching a broken bezel hinge, require specific soldering techniques rather than brazing. Repairers suggest using a high-wattage soldering iron (around 125 watts) to apply heat directly to the bezel rather than the hinge itself. This ensures a strong bond without overheating the smaller component.
Experts recommend cleaning the joint surfaces with a stainless steel brush and using liquid acid flux for the best results. After the joint has cooled, it should be rinsed with water and sodium bicarbonate to neutralize the acid and prevent future corrosion. A light coat of oil can then be applied to the finished joint as an additional protective measure.
Frequently Asked Questions
1. How much free play should the crutch loop have?
Experts suggest a gap of about .15mm, roughly equivalent to the thickness of a paper grocery bag or copy paper, to ensure the movement doesn't bind.
2. My escape wheel teeth keep bending back after I straighten them. Why?
Restorers suggest this can happen if the verge depth is adjusted without letting down the mainspring, causing the wheel to spin rapidly and strike the pallets with excessive force.
3. Can I use a torch to repair a broken hinge on a bezel?
Repairers suggest that a large soldering iron is safer than a torch for this job. If using a torch, you must be extremely careful not to overheat the brass and damage the finish.
4. What should I do if my escape wheel is beyond repair?
Experts recommend finding a replacement wheel with the same number of teeth. If the outside diameter is slightly different, you will likely need to adjust the pallets to maintain the correct lift angle and drop.
5. Why does my Ansonia clock stop after I cleaned it and replaced bushings?
Restorers suggest checking for "hooked" escape wheel teeth or loose bushings, both of which can cause erratic power delivery and stop the movement.
Find the Right Parts for Your Clock Restoration at VintageClockParts.com
While we focus primarily on American clock movements and components, VintageClockParts.com maintains an inventory of over 4,000 original antique clock parts extensively photographed to show exact condition and specifications before purchase.
For projects requiring replacement movements, hands, pendulums, suspension springs, or other mechanical components, our detailed individual part photography eliminates the guesswork. Every piece in our inventory receives individual documentation showing its actual condition rather than generic stock photos, allowing you to buy with confidence.
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