What is a 400 day anniversary clock?
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What is a 400 day anniversary clock?
A torsion pendulum clock, more commonly known as an anniversary clock or 400-day clock, is a mechanical clock which keeps time with a mechanism called a torsion pendulum.
Why does my 400 day clock stop?
Its purpose is to suspend the balls in the air and allow them to slowly rotate back and forth. If this gets bent AT ALL the clock will not work. The only bending this spring can do is twist back and forth with the balls as they rotate. The spring being bent is the number one cause for most of these clocks not working.
How do you beat level 400 on a day clock?
Accurate leveling is accomplished by adjusting the leveling screws (K) protruding from the base of the clock. 5) When pendulum is stationary, rotate it slightly either to the right or left, approximately one half turn, then release.
Why is it called an anniversary clock?
The “anniversary clock” is called that because it’ll run for about 400 days on one winding, so you can wind the thing on your wedding anniversary, perhaps making a celebration of the ritual.
How do I free my overwound clock?
Turn the key slowly and just a half turn at a time. Wind it up until it stops. Do not try to force it to wind any further. Even though it is impossible to over-wind your clock, it is also not necessary to wind it until the last possible click of the ratchet.
How accurate is an anniversary clock?
The 400 day or Anniversary clock is a precision instrument capable of very accurate timekeeping – if properly adjusted and looked after. Almost all other spring wound clocks require small adjustments to the hands each time they are wound up, which is usually every day or every week.
Who invented the 400 day clock?
The torsion clock, typically known as a 400-day clock in the U.K and the anniversary clock in the United States, was first developed by Aaron D. Crane in 1841 using a rotary—rather than swinging—pendulum invented by Robert Leslie nearly 50 years earlier.
How do I change the speed on my anniversary clock?
Anniversary Clocks On the top of the pendulum is a small disk that is usually marked SF (slower/faster) or RA (retard/advance) with arrows indicating the direction to turn the disk.
