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Barometer Clock (Boulle) by André-Charles Boulle is a late seventeenth-century French clock created out of ebony, turtle shell, brass, gilt bronze, and enamel. The clock case is decorated on all sides and was intended as either a centerpiece or for display on a mantel in front of a mirror. [ 1 ]
It forms part of a standard weather station and holds instruments that may include thermometers (ordinary, maximum/minimum), a hygrometer, a psychrometer, a dewcell, a barometer, and a thermograph. Stevenson screens may also be known as a cotton region shelter, an instrument shelter, a thermometer shelter, a thermoscreen, or a thermometer screen.
A barograph fitted with five aneroid capsules stacked in series, to amplify the amount of movement. Alexander Cumming, a watchmaker and mechanic, has a claim to having made the first effective recording barograph in the 1760s using an aneroid cell. [1] Cumming created a series of barometrical clocks, including one for King George III. However ...
The same timeline seems to apply in Europe, where mechanical escapements were used in clocks by that time. Up to the 15th century, clockwork was driven by water, weights, or other roundabout, relatively primitive means, but in 1430 a clock was presented to Philip the Good, Duke of Burgundy, that was driven by a spring. This became a standard ...
Clocks from Winterhalder & Hofmeier are mechanical precision clocks with the quality standards of Black Forest craftsmanship. [4] [5] The numbers of the dial face are in Roman numerals. The dial face is embraced by wood. [6] The clocks can be identified by the engraved W & H SCH initial letters. Most of the clocks were made from 1850 to 1933.
Comitti of London was founded in 1845 by Onorato Comitti, an Italian precision instrument maker who moved to England, [1] and started a business designing and manufacturing barometers. [2] Onorato Comitti opened his first workshop in 1850 alongside other specialist makers in Clerkenwell, London.
The company manufactured clock movements for the Self Winding Clock Company from 1886 thru the early 1890s, [2] in addition to its standard offering of longcase clocks, mantel, wall, and table-top clocks. On May 7, 1926, Seth Thomas Clock Company filed with the United States Patent and Trademark Office for trademark protection of the Seth ...
Since the early United States lacked vital raw materials—most particularly brass—most clockmakers either fabricated their movements from wood or other inferior materials, or they imported parts and entire movements from English suppliers and assembled them into the locally-produced mahogany clock cases. By their quality, the clocks of ...
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