As the power is being released from the spring, it is desired to keep the mainspring small and harmless, so the power of the spring is released into a mainspring clamp with a mainspring let down tool. Movement No. Time and Stike Spring - Patti - Each Gear Train Has Two Mainsprings, Linked End To End. 4602.

I do not mean to say this to prevent you from over winding a clock, but to release the myth of over winding from your mind.

4582 to No.4587. Time and Strike spring. Of course the spring goes wild when this is done and its moderately dangerous. A clock should be able to run with no lubrication at all anywhere, lubricating just being something to help it work and add some preventive maintenance to reduce pivot hole wear. Time spring for Carriage.

This tool takes the fear from clock repair.

Just turn the arbor the opposite way of the spring winding direction, and you will see the nub pop out of the mainspring hole.

If the rivet hole is oblong instead of round, make the hole round again with a broach or file. Please be aware that although it offers this info, it’s not a platform that concentrates on watchmaking. Alarm spring for Tot. I just came across your site – brilliant!

It should be called a hole end and loop end mainspring winder and unwinder tool. GR has a massive catalog that you can use to look up the mainspring for the caliber you’re working on, but it seems that the hard copy is obsolete. They are hole end and loop end. Don’t forget to add a bit to the length if a piece is broken off.

Time spring for Ace and Victory, Miller Plate, Miller Kitchen and Victorian, National Call. How do you know if the previous watchmaker fitted the right mainspring? Générale Ressorts (GR) is another one. It consists of the main winding component that has a switch to flip from wind to unwind.

If you need to calculate the  length of a mainspring, you can use the following formula: Length of the mainspring when the inside diameter of the barrel is 9 mm, the diameter of the barrel hub is 3 mm, and the thickness of the mainspring is 0.11 mm. If you do not have confidence in doing this, buy a new spring (they do not cost much) or get a hole end mainspring winder tool from us here at Clockworks. Mainspring lubrication     Mainsprings are not oiled, they are greased if anything at all  Generally speaking, if it turns then oil it, if it slides then grease it. One example is a little booklet I have from Robert Pringle & Sons, a jeweler in London, with charts for Nivaflex mainsprings. This loop goes around the pillars that hold the movement together.

Cousins UK lists the mainspring with the right dimensions if you search on Watch Parts Branded and select the calibre number you’re working on. Time spring for "Nine" Clock and 8 Day Lever Clock. The hole end is used inside a barrel and has a "D" or oval shaped hole at one end of the mainspring. Wear a full suit of armor doing this. This tool eliminates all these catastrophes from happening and is a must have for a clock service center.
Time spring for Stark and Tot. There’s one problem with this method though. See if there are any bent gears. You can look up the width and strength in Dennison and the length in inches.

Alarm spring for Amazone, Flash, Pirate, Presto, Racket, Rally and Tourist.

CMH 80.1 3/8 x.017 x 96 Loop Time spring for Verdi Clock CML 95.9 5/8 x.013 x 69 Loop For all late model Alarm Clocks, Time and Alarm.

You can either reuse the old one (after you’ve cleaned and lubricated it) or replace it with a new one. Clock Mainspring Warning. In general, most larger German movements take a number 8 key but some take a number 4. Movement No. See if there are any bent pivots.

Time and Strike Spring for 30 Hour Athens, Time and Strike Spring for Sharon (A-200). Clicks and Rivets are on the Hardware Pages of the Clockworks website. 4582 to No. The measurements you need are the height, the thickness, the length, and the inside diameter of the barrel. You might have noticed that Bestfit also doesn’t list the diameter of the barrel.

Just apply just enough pressure to see it snap into place. Mainsprings can do alot of damage to a clockmaker.

When a mainspring sticks to itself then it can’t put out the power it used to because of the friction.

The Dutch founder & editor of WahaWatches. For all late Model Alarm Clocks, Time and Alarm. To use the winder on loop end mainsprings is possible also. To Purchase mainsprings through us you'll need the following information: the width in mm, the thickness in mm, and the approximate length in inches of the existing spring. Need assistance finding a clock movement replacement? It is easy to calculate the dimensions of the barrel; you will need at least a fragment of the old mainspring to specify the appropriate thickness. Start with the outer hole of the spring hooked to the barrel hook and curve the spring from outer to inner until the spring pops in.

Riveting     Click rivets that have come loose happen for a variety of reasons. It is quite an impact on the clock when a mainspring lets loose and it is good to check the following: See if the click, the part that keeps the mainspring winding in only one direction, is okay and not to loose. He's also a big fan of science fiction, baseball, and comics. Time spring for All Time,Bi-Nite, Connecticut, Design, Radium, Tornado, Wake-up, No. After you’ve written down the dimensions, you can use them to search for the correct mainspring online. Remove all this from the mainspring winder now, so you can take the barrel out of the way. It’s cheaper than reusing the old mainspring and having to replace it one year later because it broke after all. The also come with an assortment of chucks that go into the mainspring barrels when working with hole end mainsprings. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.

Time, Strike and Chime spring for Chime clocks. One downside is that it doesn’t merely list the metric measurements. I hold the entire operation as far from my body as possible, then yank the spring out with the pliers.

Book Review: “100+ No BS Watch Tips” by Anthony L. If they are broke then there is still hope. Make sure you order a mainspring with the right attachment. On rare occasions the clock requires a strange sized spring that is not available. Then insert the winder tool's hook into the hole of the mainspring and wind up the spring until the holder can be removed. If these get bent, then it will create to much resistance in the gear train to let the clock run.

4585 and No.

I’d always trust the watchmaking-related source in that case. Time spring for Chime 34, 34D, 35, and 30 Movement, also for 337 to 340 Movements.

Sound encouraging? Pop off the cap off with a appropriately sized screwdriver inserted into the slot provided and you will see the broken mainspring. Start putting the cap on the barrel with the fingers until it wants to go in, but needs that 'snap' to get it into place. Now you have the arbors and pivots straightened it is time to inspect the pivot holes.

LaRose: GILBERT CLOCK: CML-127.3: 1/2" x .016" x 66" Loop: Alarm spring for "Nine" Clock. As there were a couple of companies that produced mainsprings, I’m sure there are other catalogs out there. We have a chart of all the Loop End Mainspring sizes available to be purchased new. Time and Strike spring. Arbors are the first to be straightened with whatever means you have. Now you bring the tail stock of the mainspring machine up to the other side of the barrels arbor, set the machine to wind, hold the barrel with your hands (using gloves) and start winding up the spring. You can use this book to identify movements and to look up info such as the hole diameters of the hands and, you guessed it, the dimensions of the mainspring. Then reverse the tailstock so the bar that sticks out of it can be inserted into the loop of the mainspring and the whole thing can be positioned as to secure the other end of the winding arbor. It’s mostly used to identify movements, but it also lists some additional info including mainspring dimensions.

We have a chart of all the Hole End Mainspring sizes available to be purchased new. After letting the power of any other springs so they are harmless in  the clamps, disassemble the movement. I have used this method when a winder is not available to remove an old spring: I hold the barrel tight with a towel wrapped around it, with only a small opening in the towel to get a pair of needle nose pliers to the mainspring.

Best to get a new one.

For the information in this page to be accessible to the widest audience of readers, both a high readability score and a low grade level are ideal. An automated review of this page attempts to determine its readability in English (US).

Lubricating with mainspring grease is optional. This would call for re-pivoting and that is a whole different topic to be covered later. See how safe and easy a mainspring winder makes it? 28.28 ÷ 0.11 (mainspring thickness) = 257 mm, Service: Omega Dress Watch with 625 Movement, Service: Eterna Dress Watch with In-house 905 Movement, Best Watchmaker Screwdrivers for Beginners, Book Review: The Vintage Rolex Field Manual by Colin A. Using a mainspring winder is the safest way to work with mainsprings. Alarm spring for Must-Get-Up, Relay and Spasmodic. If the unwound spring is a foot or more in diameter (in a American 8 day time strike movement taking a ¾ x .018 x 96 spring) than it should be good to use after it is cleaned. The loop end mainsprings are the type that are visible from the back of the clock and they have a loop at the end of them. Now you can remove the barrel from the spring's end by just turning it the opposite way of the springs direction, just enough to release the barrels hook from the springs hole.

Sometimes the spring is not made or is a unusual size so it costs more, in this case the spring can be cleaned.

The continuing work does not require the system to be closed for use. Cheers! Pivots are the part of the gear arbor that stick through the plate of the clock. This can be done by hand, but is again, moderately dangerous. Loop end mainsprings that break are more difficult to remedy. 180.

If greasing is your option then it should be done when it is out side of the clock movement and uncoiled. Let me know in the comments below. During a service, there are two options for the mainspring.

To put the spring back into the barrel is self explanatory, just do the reverse process. Now check for bent pivots and arbors, pivot holes that are opened larger from the shock, and broken teeth on the gears. Tell Tale, Tick Tock and Tidy Tot.

Mainspring should only occupy ½ of the barrel. Replacing mainsprings involves letting the power out of any other mainsprings in the movement, so they wont fly out of control and damage you or the rest of the clock. Subtract the area of the arbor hub from the area of the barrel. Over winding is not possible on clocks, the myth started with some pocket watches that could be over wound and has been feared of ever since. There are some websites to help you with mainspring dimensions. Then determine if the mainspring is a hole end or a loop end.


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