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A CHARLES II STRIKING EIGHT DAY LONGCASE CLOCK WITH 1¼ SECONDS PENDULUM
拍品 20

A CHARLES II STRIKING EIGHT DAY LONGCASE CLOCK WITH 1¼ SECONDS PENDULUM

EDWARD EAST, LONDON. CIRCA 1670/1675 AND LATER

已結束2010年5月27日

成交價

GBP 18,750

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A CHARLES II STRIKING EIGHT DAY LONGCASE CLOCK WITH 1¼ SECONDS PENDULUM
EDWARD EAST, LONDON. CIRCA 1670/1675 and later
CASE: later walnut-veneered case with replaced hood, later door to plinth DIAL: latched 9¾ in. square brass dial signed along the lower edge 'Eduardus East Londini fecit', winged cherub spandrels to silvered chapter ring, matted centre with seconds ring calibrated for 1¼ seconds beat, date aperture, later blued steel hands MOVEMENT: five latched and ringed pillars, anchor escapement and outside countwheel strike on bell, re-instated bolt-and-shutter maintaining power; two-part brass rod pendulum, two brass weights
73 in. (185.5 cm.) high; 15 5/8 in. (39.5 cm.) wide; 8¾ in. (22.5 cm.) deep

專家說明

Longcase clocks with 1¼ seconds pendulums are particularly rare. The first longcase clocks used verge escapements, making a long pendulum impractical. However, it was appreciated that a longer pendulum would produce more accurate timekeeping. For a short period after the invention of the anchor (approximately 1669/70) there was a certain amount of experimentation with the length of pendulums for this new escapement. The 1¼ seconds pendulum (also known as the Royal pendulum), with its slower swing and smaller arc, reduces timekeeping error; however, it can rock the case, causing the movement to stop. See also lot 48.
Edward East (1602-1697) was one of the greatest clockmakers of the 17th Century. In 1618 he was apprenticed in Goldsmiths' Company to Rogers of London and Free of the Company in 1627. He worked in Pall Mall in the 1620s, at 'The musical Clock, Fleet Street' in the 1640s and then later at 'The Sun, outside Temple Bar'. He was watch and chief clockmaker to Charles II from 1660 and was one of the founder members of the Clockmakers' Company in 1631.