Tag: crutch

Your Clock Has Stopped | Follow These First 5 Steps Before Calling A Clock Repairer

There are few things more frustrating for an antique or vintage clock owner than when a favorite clock suddenly stops. Mechanical clocks are intricate machines, but that doesn’t always mean the problem is complicated. In fact, many stoppages are caused by small, simple issues that can be corrected at home without tools or technical expertise.

Before you assume the worst or take your clock to a repair shop, here are 5 things you can do yourself to have your clock ticking again.

1. Is the Clock Wound?

It may sound obvious, but the most common reason a clock stops is simply that it has run down. Spring-driven clocks need their mainsprings wound fully with a key, while weight-driven clocks require the weights to be raised. All mechanical clocks require power to operate. Simply put, if the clock is not wound, it cannot run — so always begin here before moving on to more complex possibilities.

Winding arbors on a Seth Thomas mantel clock (arrows)
Winding arbors on a Seth Thomas mantel clock (arrows)

2. Is the Clock Level and in Beat?

Pendulum clocks must be in beat to function properly. Being “in beat” means that the tick and tock are evenly spaced in time. If the case is leaning or the crutch (the arm that drives the pendulum) is out of position, the pendulum will quickly stall. Place the clock on a level surface and listen carefully: if the tick and tock sound uneven, adjust the clock slightly to the left or right until the beat evens out. Sometimes, fine adjustments to the crutch are necessary, but often leveling the case is all it takes.

Unless your wall clock is anchored, simply moving the case very slightly left or right and listening for an even beat is all that’s required.

Is your clock level on the wall?

3. Is the Pendulum Free to Swing?

The pendulum is the heart of your clock, and it must swing freely without interference. Check that the suspension spring is straight and properly seated, not twisted or bent. Make sure the pendulum bob is not rubbing against the backboard, striking the chime rods, or touching the bottom of the case. Any sort of rubbing will affect the swing of the pendulum, thereby robbing the clock of power. The smallest obstruction can rob the pendulum of momentum and bring the clock to a halt.

Clocks with a floating balance or a hairspring escapement are popular with some collectors since they continue running even when the surface isn’t perfectly level.

A mantel clock movement showing the pendulum

4. Are the Hands Binding?

Sometimes the problem lies not with the movement but with the clock hands. If the hour and minute hands are rubbing against each other, or if the minute hand is scraping against the dial or the glass, the train can be stopped entirely. If the clock stops at a specific time every 12 hours, hands that are interfering with each other are likely the culprit. Inspect the hands carefully and make sure there is a little clearance between them. A gentle outward bend is usually all that’s needed to free them.

Any one of the four hands on this clock can cause interference

5. Is the Movement Dirty or Dry?

Mechanical clocks rely on clean pivots and fresh oil. Over time, old oil becomes gummy and collects dust, creating friction that will eventually stop the clock. If you notice dry or blackened pivot holes, sticky residue, or an overall grimy look to the movement, then lack of servicing is likely the culprit. Gummed-up oil in the mainspring coils can also cause the springs to appear as if they are glued together. Some people incorrectly refer to this condition as a clock that is “over-wound”.

When I first examine a newly purchased clock that does not run, I carefully release the mainspring’s power and then attempt to run the movement. If it runs, that tells me the mainsprings require servicing. At this point, the clock will need a complete cleaning and oiling by a qualified repairer.

Very dirty movement
A very dirty movement

Conclusion: When Simple Fixes Aren’t Enough

If you have checked these five areas and your clock still refuses to run, the cause is almost certainly deeper and more complex. Worn pivot holes, tired mainsprings, bent teeth, or other mechanical issues may be at fault — problems that cannot be corrected with quick at-home adjustments. A clock movement may appear clean, yet still be quite worn — something you can’t always detect without disassembly.

The good news is that your clock is very likely repairable, but it will require the attention of an experienced clockmaker. By ruling out these simple issues first, you’ll know with confidence when it’s time to seek professional help, and you may just save yourself a service call.

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How to Keep Your Clock In Beat

You have just brought a clock that was running smoothly when you first saw it. You bring it home, select a location to display it, reattach the pendulum, and give it a slight push but after a few seconds, it stops. One crucial aspect of keeping a mechanical clock functioning properly is making sure it is “in beat.”

This article assumes that your clock is equipped with a pendulum rather than a balance wheel or platform escapement. A pendulum on a clock is a weight suspended from a pivot so that it can swing freely back and forth. The pendulum’s regular, consistent motion is used to regulate the time on your clock.

What does In-beat Mean

When a clock is “in beat,” it means that the pendulum swings symmetrically, with equal time intervals between the ticks and tocks. This even rhythm ensures that the escapement releases energy consistently, which is essential for keeping accurate time. You will hear a steady “tick-tock” rhythm, with equal spacing between each tick and tock.

If the rhythm sounds irregular—like “tick-tick… tock-tock” or has uneven gaps—the clock is out of beat, meaning the pendulum is not swinging properly in balance.

Ogee clock showing replacement pendulum bob
Ogee clock showing a brass pendulum bob

As the pendulum swings, it controls the release of the clock’s escapement, which allows the gear train to move in a controlled manner, driving the clock’s hands forward.

How to Correct a Clock That’s Out of Beat

Method 1: Tilting the Clock

One way to fix a clock that’s out of beat is by gently tilting it sideways while listening for the sound to become even. Once you hear an even tick-tock pattern, prop the clock in place to maintain the tilt. While this method works, the clock may end up looking tilted and uneven in its position.

Method 2: Adjusting the Crutch

The second method is more precise and involves adjusting the crutch. The crutch is the rod that extends down from the pallets and rocks back and forth with the escape wheel. The pendulum rod passes through a crutch loop or fork at the end of the crutch, and it’s important to ensure the pendulum rod sits in the middle of the loop without being too tight or too loose. The crutch connects to the pendulum leader, which is then attached to a post with a suspension spring.

Mauthe movement back plate
Movement crutch and pendulum leader

For mantel clocks, making this adjustment is relatively straightforward, as they usually feature rear access doors. Through these doors, you can easily reach the crutch, pendulum rod, and bob. If your clock has a wire crutch (brass wire is pliable), gently bending the wire slightly at the midpoint in either direction will help correct the beat.

For English and German-style clocks, you can make a slight adjustment to the crutch on one side or the other since the crutch is connected to the escapement arbour and fits snugly but moves enough to make an adjustment. Moving it alters the entry and drop of the escapement pallet and corrects the beat.

Additionally, you may need to adjust the height of the escapement by loosening two screws on the suspension spring post and repositioning the pallet, a process that requires time and patience and is best performed on a movement test stand.

Wall clocks, on the other hand, require more effort to perform a beat adjustment. To access the crutch on a wall clock, you’ll need to remove the hands— the minute hand is held by a screw or pin, and the hour hand pulls off— and then remove the dial, which is usually attached with screws. Once these parts are removed the crutch can be adjusted.

Minor beat adjustments on wall clocks can also be made by slightly tilting the clock. The tilt may or may not be noticeable.

A One-Time Procedure

The good news is that you’ll only need to adjust the beat once. Whether your clock is a wall clock, mantel clock, time-only, time and strike, or time, strike, and chime, the principles remain the same. This is a straightforward DIY procedure, so professional help is not necessary.

Moving the Clock

If you relocate the clock to a different spot, it’s often necessary to repeat the process of checking and adjusting it to be in-beat. This is because changes in the environment, such as variations in surface level or vibration from nearby activities, can affect the pendulum’s swing. After moving the clock, always recheck if it is in beat. You may need to re-adjust the pendulum’s crutch to ensure a smooth and even tick-tock rhythm.

Final thoughts

If your clock is not running and efforts to put it in beat have no effect, several underlying issues require remediation. If there is significant wear of the pivots or pivot holes, wear in the pinions, there are broken components, or dried oil creating friction in the movement, all of which may need attention to restore the movement’s function.

After the movement has been serviced, adjusting the clock to be in-beat becomes a much easier task.

For a more comprehensive or technical examination, horological journals, articles, and bulletins provide in-depth insights into the physics of escapement design and theory. However, I trust that this simple explanation will suffice.

There’s something wonderfully calming about the rhythmic ticking of a perfectly in-beat clock.

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