Dating ward lock guides
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c1660 – calendar movements were introduced to English longcase clocks.
The first American patent issued for a calendar movement was in 1853.
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Dating Antique Clocks can be an exact science providing you have the right reference books and the proper experience.
However, if you don’t there are various little things that can help when dating antique clocks.
Up until then hand cast and finished brass movements were very expensive.Made in England or England, Made in France, France, etc.c1901 – saw the introduction of the Anniversary trademark on 400-Day clocks. c1775 – matching minute and hour hands were introduced; Although antique clocks were produced with only hour hands until around 1820.c1890 – chime bars, also called chime rods, were introduced to clocks. c1882 – Seth thomas introduced clock models in Adamantine veneer finishes which mimicked marble, slate, wood grains and other materials.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.