SHORT COARSE To acquaint you with some clock facts
All mechanical clocks operate on the principle of dividing the motion of a gear train into small increments. For a “time only” clock, a power source, most often a mainspring or suspended weight(Gravity), rotates a series of gears. A regulating system (escapement) controls the rate of rotation by allowing each tooth of the last gear in the gear train “escape wheel” to advance at controlled intervals. The timing of these intervals is regulated by adjusting either the swing of a pendulum or the oscillation of a “balance wheel” depending on the type of escapement. Each “tick” of the escapement represents one increment of time.
Clocks can “chime” every quarter hour and/or “strike” every hour as well as show time. While each function has its own drive train and regulating system and can be incorporated within the same movement, the striking and chiming are always triggered by the time mechanism. They can be generally recognized as follows: Time only - one winding port, Time and strike – two winding ports, Time, strike, chime – three winding ports. The durability of a clock is determined not only by the quality of the materials that make up the movement but also by the quality and design of the clock case. Precision, however, is mostly a function of the design of the movement.
The most common factors that adversely affect the workings of the clock movement are; normal wear which can result in damage or deformation of gears and other mechanisms, drying of lubrication and, improper handling to list a few. Except for extreme conditions, temperature and humidity are not major considerations for the movement but may affect the case. More important is a sturdy resting place and proper handling.