Pendulum fails to keep swinging - NAWCC Forums
Jul 30, 2024 · Hi, I have a Kienzle Grandmother clock circa 1920. The problem I have is that once I start the pendulum swinging it will only work for around 5 minutes. Also there are three …
Seth Thomas Grandfather Clock Pendulum Suspension
May 11, 2025 · I have a ST grandmother clock that needs a pendulum suspension. The original part was missing when I bought the clock that also had a broken suspension spring. The …
Precision Pendulum Clock, Konrad Marwitz, Munich - NAWCC …
Jun 1, 2025 · The pendulum is quite light, the cylinders are hollow and apparently were at some juncture filled with lead pellets, a few fell out when opening the cylinders. Interestingly, there …
HOW A PENDULUM CLOCK WORKS - NAWCC Forums
Jan 21, 2015 · 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.
Pendulum stops after 10-15 minutes - NAWCC Forums
Feb 20, 2019 · However, the pendulum does swing in a diagonal back to front motion rather than just side to side. If you’re looking at the clock face and start the pendulum by moving it to the …
Compensated pendulums - NAWCC Forums
Oct 4, 2007 · 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 …
Timing: Beats per hour | NAWCC Forums
Oct 17, 2016 · No missing pendulum. Here are 2 photos from BEFORE cleaning: And one after cleaning. The original measurement of 8325 BPH was after cleaning and running well, keeping …
identification/age of Ingraham Mantle clock... | NAWCC Forums
Jul 25, 2005 · I was about to recommend the typical Ingraham mantel clock pendulum until I read the following - "The movement used is our heavy brass pendulum movement, which is well …
How to determine suspension spring length | NAWCC Forums
Jan 16, 2012 · 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 …
fast/slow dial on mantle clock | NAWCC Forums
Dec 15, 2012 · I am trying to get my Ingraham Adrian mantle clock that I got back from the clock repairman to keep accurate time. I have been adjusting the nut on the pendulum bob. I figure I …