How We set up our clocks is very important to their reliability. Most often, problems are seen with long-case or "Grandfather" Clocks. People also sometimes struggle with hanging the pendulum, and with Wall Mounted Clocks.
Long-case clocks suffer from what is known as "Thursday syndrome". That is, when the weights have dropped to the same level as the pendulum (Usually around Thursday for a Sunday wound clock) They begin to sway in unison with the pendulum, This in turn creates a mild swaying of the Clock case, robbing action from the pendulum and causing the clock to stop running.
To avoid this, the case should be mounted firm against a wall. In the pictures to the right, you can see how wedges of wood have been placed below the front edge of the case to push it back., at the same time, a wooden block has been made to the same thickness as the skirting boards and placed high up behind the clock to ensure it stands straight and does not lean backwards.
It is preferable to screw the case to the wall to stop it from swaying and to provide stability against knocks.
On carpeted floors, the clock needs to be screwed hard against the wall as the soft floor provides little stability for a swaying case, if this is not possible, a wooden base should be made and screwed down into the floor for the case to stand on.
For Clocks mounted at an angle to the wall, a bracket should be made to fit into the corner of the wall and to be bolted to the case back. These can be provided, But must be custom made, we are able to arrange a house visit to take measurements and to fit the bracket and appropriate charges will be applied.
Wall mounted Clocks
When hanging wall clocks it is desperately important that an appropriate fixing is used. Heavier clocks require bigger screws, and no clock should be hung from small screw in hooks. If mounting in a brick wall I always use a 7mm screw as a minimum and to fit it with the appropriate wall plug. Make sure the screw is deep in the wall and very firm. When mounting into a wall stud, the wall plug is omitted and a small pilot hole is used to guide the screw and ensure the wood does not split.
Always use the original wall mounting eye on the clock, Unless it has become loose and a sturdier mounting added. I have seen some awful substitutions and often these fail and cause catastrophic damage to valuable antiques.
If you suspect that the original mounting eye is not capable of supporting the weight, We are able to fit stronger ones at your request.
Ensure also that the clock is mounted high enough that cats, dogs and children cannot easily knock them off their fixings.
Any fixings at the base of the clock are to stop you from knocking it out of beat and should not play a supporting role.
Hanging The Pendulm
Below are three common suspension and crutch setups. on the left is the usual manner of hanging the pendulum of a long-case clock. In the middle is a fusee bracket clock, this method is also used in fusee dial clocks, and on the right is a very common setup for french clocks with brocot adjustment,
It can be seen that the pendulum must hang from the suspension and interfere evenly with the crutch. Study the pictures and compare them to your own clock. There are many designs and these are the three most common, you should be able to apply the theory to your own needs.