Old House Journal – September 2019

(Marcin) #1
ABOVE Clock restorer
Craig Kerr works on an
early German anniversary
clock, ca. 1905, with a
disc pendulum. RIGHT The
rack-and-snail striking
mechanism ccomes from
an eight-day German
tall-case clock, ca. 1930.
LEFT Spare keys each
await the right clock.


  1. YOU MUST NOT OVERWIND THE CLOCK.


Winding a clock spring all the way


does not damage it! If a clock stops


when it is fully wound, look for a


lubrication or wear problem.



  1. MECHANICAL CLOCKS ARE VERY ACCURATE.


While most weight- and spring-


driven mechanical clocks keep time


within a minute or two a day, don’t


expect split-second accuracy as


you would get with a modern quartz


movement. Spring-driven clocks
lose power (and time) as the spring
unwinds; fluctuations in temperature
can cause the movements to expand
and contract, affecting timekeeping.


  1. BUY ONLY AMERICAN. Well, American
    clocks manufactured prior to WWII
    were not as well made as those
    from France, Germany, and Austria.
    European clocks had higher-quality


movements and require fewer
repairs today than clocks cheaply
produced in the U.S. and Japan.


  1. JUST GIVE IT SOME WD-40. No, this
    lubricant is not your clock’s friend!
    Never spray the mechanisms with
    WD-40 as that will attract dust, ruin
    the cleaning solution used for its
    maintenance, and make cleaning
    and repairs more costly.


Myths & Clocks Four common myths about old clocks, and the truth behind each.


ABOVE An American
figural clock, by Ansonia,
ca. 1880, includes a
musketeer. Flanking it
are Parian-ware figures.
Free download pdf