桌子或支架时钟 - 美国大都会艺术博物馆展品查阅

品名（中）	桌子或支架时钟
品名（英）	Table or bracket clock
入馆年号	1964年，64.101.872
策展部门	欧洲雕塑和装饰艺术（European Sculpture and Decorative Arts）
创作者	George Graham【1673 至 1751】【英国人】
创作年份	公元 1715 - 公元 1725
创作地区
分类	钟表业（Horology）
尺寸	整体: 24 1/2 × 16 3/4 × 8 3/4 英寸 (62.2 × 42.5 × 22.2 厘米)
介绍（中）	这款时钟的八天机芯有一个边缘擒纵机构，一个半秒跳动的钟摆，以及齿轮齿条敲击，它敲击数小时。它的大尺寸和黄铜板的厚度是不寻常的，黄铜板由八个闩锁的柱子隔开。未装饰的背板编号为613。表盘上的视窗指示月份中的某一天，并允许查看与真实摆锤相连的假摆（装饰有太阳图像）的振荡。小时章节上方的两个较小的小圆环用于调节钟摆（左）和打开或关闭时钟的报时（右）。格雷厄姆是托马斯·汤皮恩（Thomas Tompion）的熟练工，他娶了汤皮翁的侄女，并于1704年左右成为合伙企业。他后来继承了Tompion的业务，并保留了Tompion对车间产品进行编号的系统。格雷厄姆继续Tompion的工作，完善了手表的长寿命圆柱形擒纵机构;他还发明了用于时钟的无后坐力（或无节拍）擒纵机构以及汞摆，以解决温度补偿问题。他于1730年成为皇家学会会员，并被埋葬在威斯敏斯特大教堂的Tompion附近。
介绍（英）	The eight-day movement of this clock has a verge escapement, a halfseconds-beating pendulum, and rack-and-pinion striking, and it strikes hours. It is unusual for its large size and for the thickness of its brass plates, which are held apart by eight latched pillars. The undecorated back plate is numbered 613. Apertures in the dial indicate the day of the month and allow a view of the oscillation of the false pendulum (ornamented with a sun image) that is connected to the real pendulum. The two smaller chapter rings above the chapter of hours are for the regulation of the pendulum (left) and for turning on or off the striking of the clock (right). Graham, a journeyman in the establishment of Thomas Tompion, married Tompion’s niece and was taken into partnership about 1704. He later inherited Tompion’s business and retained Tompion’s system of numbering the products of the workshop. Continuing Tompion’s work, Graham perfected the long-lived cylinder escapement for watches; he also invented the recoilless (or dead-beat) escapement for clocks as well as the mercurial pendulum, a solution for the problem of temperature compensation. He became a fellow of the Royal Society in 1730 and was buried near Tompion in Westminster Abbey.