安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
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- HOW A PENDULUM CLOCK WORKS - NAWCC Forums
The crutch isn’t attached directly to the pendulum The pendulum hangs from a flat suspension spring, and swings freely But the rod or leader of the pendulum passes loosely through a loop in the end of the crutch So when the pendulum swings, the crutch swings The rate of the crutch is determined by the rate of the pendulum
- Pendulum stops after 10-15 minutes - NAWCC Forums
Ok, we have finally reached the point of this post The clock’s pendulum stops after about 10-20 minutes I have read up a bit on this I have listened to the tick tock and it sounds even to me - like a metronome However, the pendulum does swing in a diagonal back to front motion rather than just side to side
- Compensated pendulums - NAWCC Forums
On a "simple pendulum" setup this would cause the pendulum's period of swing to lengthen (slow down) Mercury compensating pendulums contain one or more glass or metal flasks partially-filled with mercury as counterweight When the mercury expands, it moves up inside the flask(s), counteracting the lengthening of the iron pendulum rod
- Beat Setting 101 - NAWCC Forums
Scottie has pointed out that a regular pendulum clock is in beat when overswing is equal in both directions The same is true for torsion clocks A 400-day torsion clock is in beat when its pendulum has equal overswing in both directions Overswing is the amount of pendulum rotation AFTER a tick or a tock
- How to determine suspension spring length | NAWCC Forums
The pendulum length can be calculated from the number of teeth on each wheel above the center arbor The pendulum length calculated will usually be from the center of oscillation to somewhere near the center of the pendulum bob From the wheel tooth count, you can also determine the beats per hour minute that will result in good timekeeping
- Banjo Clock Erratic Time Issue | NAWCC Forums
Isochronism in a clock (where the interval of the pendulum making different arcs is the same) is affected by many things including the adjustment of the escapement If you are referring to a common recoil or anchor escapement, then increasing the "escapement depth" will increase the pendulum arc, but more importantly it will increase the recoil
- How does one service a Horolover Flying Ball clock?
This Horolover "Ignatz" flying pendulum clock followed me home from a recent estate auction I've been fascinated by these but have never owned or serviced one before The ball and thread are not correct (I have one ordered) but the clock is running but of course not keeping time very well
- Escape wheel question - NAWCC Forums
Since pendulum length is related to the BPH (or some equivalent of measure), you can use the formula for determining BPH and solve for the correct number of teeth on the wheels You could use the tables and formulas in "The Clockmaker's Beat Book" and back into the correct count for the number of teeth on the escape wheel
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