An important high grade astronomical regulator clock.

An important high grade astronomical regulator made in England circa 1845. This very clock is pictures in Dererk Roberts, English Precision Pendulum Clocks on page 218. Roberts states that he purchased this clock from a shipping line in the 1970’s. It was used as their master clock. One of the uses was to set the company’s chronometers against it.

This eight-day regulator movement is very good quality. The plates are heavily constructed and are substantial. Six heavy pillars or posts are screwed through the front and back plates are used to support them. The movement features a dead-beat escapement, the pallet facings are jeweled, the gearing is light and designed with six crossings, the pinion count is high having as many as 16 leaves, end stops are positioned on the first two pivot positions and these are adjustable by screw regulation and the front pivots are carried by a heavy bridge. Other features include, Harrison’s maintaining power, a spring loaded winding guide or stop, and fine adjustments for the beat and the crutch are located at the back of the movement. The pendulum is carried or supported by a heavy bar that spans both plates and extends beyond the backplate. A nicely shaped cradle locks the pendulum in place. The pendulum features a steel rod that supports a single glass jar that is intended to hold a volume of mercury. Mercury is used for temperature compensation. This jar is is supported by a decorative cradle. It is attractive and incorporates a fine regulation adjustment in the design. The brass weight features a decorative shell and hangs from a pulley that features six crossings.

The brass dial is engraved in an astronomical format having individual dials for the seconds, minutes and hour displays. Please note that the hours are. It is interesting to note that very few regulators indicated the hours in a 24 hour format. The vast majority of these hour dials are displayed in the traditional 12 hour format. This brass dial is treated with a silver wash for contrast. The three hands are blued steel and original to this clock.

The case is constructed in mahogany and features flamboyantly figured mahogany veneers. The veneers are first rate and exhibit vibrant grain patterns. An applied double stepped molding elevates the case up off the floor. The base panel is cross banded in a wide band of mahogany. The waist section features a large door that is fitted with glass. Through this one can view the pendulum and weight. The front corners of the case are canted. The hood features an architectural pediment at the top. The hood door is fitted with a circular aperture that fits the dial. In scribed spandrels are located in the

This clock was made circa 1845. This case measures approximately 6 feet and 6 inches tall to the top of the molding. At the base molding, the case is 18 inches wide and 11 inches deep.

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