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They are metal rods specially tuned to produce a sequence of chime notes when struck by the movement’s chime hammers. c1910 – Bakelite an early inflammable, mouldable plastic, was invented. Leo Baekeland, founded the Bakelite Corporation around 1910.

It reached its height of popularity in the 1930’s and 40’s and was used in a wide variety of consumer products.

Signatures on an antique clocks dial or movement can sometimes help to date a clock.

Providing you can find the clock makers name and the date of activity listed in one of the many guides accessible to watch and clockmakers.

c1901 – saw the introduction of the Anniversary trademark on 400-Day clocks. c1663 – minute hands were introduced to longcase clocks.

c1775 – matching minute and hour hands were introduced; Although antique clocks were produced with only hour hands until around 1820.

Some time after the original series (presumably), Dr.

c1820 – wooden movements were generally used in early American shelf clocks until around 1820.The first American patent issued for a calendar movement was in 1853.c1806 – machine made wood screws were introduced in France as early as 1806.Up until then hand cast and finished brass movements were very expensive.Chauncy Jerome began manufacturing cheap 30-hour brass movements in the 1830’s; by the early 1840’s brass movements virtually replaced wooden ones.

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