Grandfather Clock Weights Description
The Grandfather Clock Weights Description on this web page will cover what is meant by weights and their parts. Any part of the weight is available on its own. We also offer complete weights. If needing a complete clock weight, we need to determine what the appropriate weight is for the clock.
This requires getting the information off of the back plate of the brass movement itself. This information will not be on any of the paperwork or clock case. Once the movement number is known, cross reference that with the weight chart.
The weight chart
Before using the chart, you need to know who made the clock movement. This can be deceiving because the movement can have any name on it, but it may not be the true maker.
The numbers on the movement is what will lead to getting the correct manufacturer of the movement not the names on the movement. The stamp with these numbers are right on the back plate. Use the movement identification page to find out who made it.
Once the manufacturer is known and the starting numbers of the movement, use the chart to see the weight specifications for the Grandfather clock weights.
Avoiding the weight chart
There is also another way to go about this task, which may be easier. If the movement was made in Germany, post WW2, we can safely make the following assumptions.
If the pendulum bob is 8 1/2 inches or more, change that rule to [email protected] lbs and [email protected] in 47mm or 43mm. A movement that is rectangle in either chain or cable will use [email protected] and [email protected] LBS in 60mm diameter.
This changes to [email protected] and [email protected] in 60mm diameter if the pendulum bob is 8 1/2 inches or wider. These specifications do not apply if the clock has 5 or 9 big tubes on the back. Also this rule is not for all Grandfather clock weights but the vast majority of the post WW2 German units.
Close enough is good enough
The weight specs list it as 4.7 or 6.6, however this is really being too picky. If getting it close to those numbers that is fine. In fact if ordering a 4.7 lb weight, it may come 5.3 or whatever, but that is just fine.
There has to be some sort of reference for the factory to label the Grandfather clock weights so it is what it is. Just know if it is a pound over that is fine. If it's a little under, that is fine also. They do not have to be exact.
Often wrong from the start
In fact, there is a lot of clocks in the world sold new with the wrong Clock Weights on them from the start.
Clockworks will do a repair and they will say the clock ran for 30 years straight and come to find out they had Grandfather clock weights that were a pound or two too heavy. If the weights are a little too heavy it is fine. A lighter weight may or may not be fine because it may not trigger the movement to work properly.
Grandfather Clock Weights Description - Conclusion
Grandfather clock Weights are not cheap mainly because they are so heavy to keep, ship, store, move from here to there.
Sure one weight set of three is less than 30 lbs but that adds up quickly in a stack of weight sets.
With that said, we don't want to ship these back and forth. It is best to get the right weights the first time. To return these is not an inexpensive or easy task. For example, suppose we charge $30 to ship these and for some reason they are wrong. Then it is $30 to get them back to us and another $30 to send out a new set.
In addition, UPS charges a fee to send a call tag for them to come back. That is $110 to UPS for no reason. So if there are questions, please ask.
Grandfather Clock Weights Stuck
The Grandfather clock weights can get stuck in the high position if over wound. Some larger clocks have over wind protection to prevent this.
The grandmother and grandfather chain drive units often do not have this feature. When winding the weights up make sure the top of the weight can be seen when done. Never go to the point where the top of the shiny weight cover can't be seen.
Chime weight stuck
The chime weight is on the right as you face the clock and has the heaviest weight. Using cloth gloves, or at least a cloth of some kind, pull down on the weight some.
This is the same as making the weight weigh more. At the same time, turn the minute hand past the quarter hour to see if it will engage the chime. When you advance the time and make it chime, the weight will slowly come down. This will hopefully be enough to activate and run the chime on its own.
Time weight stuck
The time weight is the center weight which can be light or heavy depending on bob size.
This is the hardest weight to deal with out of the three. Try pulling down some while swinging the pendulum.
See if it starts running on its own when letting go. If this does not work, take off the pendulum. All it will have is the pendulum leader hanging on the back of the movement.
Strike weight stuck
The strike weight is on the left as you face the clock and has the lightest weight. Only after the chime weight is operating correctly can you work on the strike weight.
If the clock does not run through the chime sequence it will not get to where it strikes out the hours. With some cloth gloves on, or at least a cloth of some kind, pull down on the weight some.
Again, this is the same as making the weight weigh more. Doing this will make the clock strike. Advance the minute hand and let it chime each quarter until it plays the top of the hour song. Then pull a little on the weight when it is going to strike out the hours.
Keep advancing the time with the minute hand, as to make it chime and strike. Then slowly the weight will come down enough to be able to activate and run the strike on its own.
Changing a Clock Cable
Changing a clock cable requires the movement to be out of the clock case. These instructions refer to post WW2 modern grandfather units of German origin, however all makes have a similar method. Swapping the cable is easy. There is a big hole and a little hole on the cable mount.
The cable end fits into the big hole, then slides over to seat into the little hole. When the lock is set, it seats in securely. It's the same basic theme on both ends of the cable, meaning, one slot being in the cable drum itself and the other on the movement.
The cable drum side of the cable
To remove, lift the cable up from the oblong hole on the drum and slide it over to the big side. The cables have ends made of brass on them. These get slid over from the small side of the slot on the cable drum to the larger slot. It will release so as to remove it from the clock movement.
The other end of the cable
The movement itself would normally have the plates set for the cable ends. The cables have round brass ends on them and these lock into a plate on the movement.
This plate will have a small hole leading to a big hole. To remove the cable it requires only lifting the end and moving over to the big hole and out.
Clock Weight Hook KitBrass top Clock Weight Hook Kit for modern German clock movements such as Hermle / Urgos / Kieninger. The top hooks are made with external threads or internal threads and also M4 threads or M5 threads.
The M* number is the thread size of the screw/bolt where M4 is 4mm, M5 is 5mm. Sometimes this can get confusing when trying to order a single hook so this is why they are now available in a pack of three to cover all clock weight possibilities.
Prior to offering this kit we did sell them single, however this is no longer the situation. It was just found to be much easier to sell the three pack to be sure the right one will be sent. So use whatever one you need and maybe a friend or relative can use the others.
In this top hook kit there are 1 of the M4 internal threads, 1 of the M5 internal threads, and 1 of the M5 external threads. So there is a likely chance that one of these hooks will fit the top of the clock weight.
The most popular size is the M4 internal hook. However many other clock weights will take one of the other styles. So this is why we sell the 3 pack now instead of single.
Clock Weight Hook Removal and Installation
To remove the weight hook, simply use needle nose pliers to unscrew it by turning it to the left. The broken hook unscrews just like any other screw. When they are off you will be able to tell if it has external or internal threads. To install the new screw, just reverse what you did to take off the old one. It is as easy as that.
There is one important thing to remember when swapping out these hooks. Never touch the brass weight with your bare hands. Over time, this will cause the brass to become black wherever your fingers were. So always use a rag or paper towel to handle the brass weight.