Correctly choosing a proper replacement main spring when a clock
has missing springs (or the wrong springs installed) is a very
common problem that clock repairmen often face. From the beginning
of his career as a clock repairman, Richard Hansen noticed that
when his customers brought him their clocks to be repaired, he
would often see evidence of poor repairs, poor techniques and even
gross mistakes inflicted on them by previous repairmen. He wondered
why he should believe that every spring he found was, in fact, the
perfect one for the clock in question? And when he found a spring
where the outer end had obviously been re-worked (thus making the
spring a bit shorter), he wondered how he would know if it was not
then too short? Was it possible to redo the end again, or will that
make the spring impossibly too short then? This book is a result of
his work to answer some of those questions about choosing springs.
It provides a methodology whereby answers can be found by using a
set of look-up tables. It's a solution intended for the use of
clock repairmen at their bench to find those answers with a minimum
of time and effort needed for any given clock in front of them.
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