A black slate mantle clock with gong, 19th century, with…
click the photo to enlarge
A black slate mantle clock with gong, 19th century, with maker's mark for Japy Freres, an architectural style clock with a shaped triangular pediment above a temple facade enclosing a Murison Fraserburgh dial with an enamel chapter ring and Arabic numerals, flanked by grey pink granite pilasters and volute decorations to an extended base; key and pendulum, height 36 cm, width 44.5 cm, depth 16 cm

You must be a subscriber, and be logged in to view price and dealer details.

Subscribe Now to view actual auction price for this item

When you subscribe, you have the option of setting the currency in which to display prices to $Au, $US, $NZ or Stg.

This item has been sold, and the description, image and price are for reference purposes only.
  • Chapter Ring - A separate metal plate on the face of a clock, on which the numerals for the hours and sometimes parts of the hours, are displayed, usually wheel shaped and sitting on top of the dial plate. The chapter ring is often a feature of the clock and can be silvered or enamelled to stand as a contrast to its background. The hours are usually shown in Roman numerals, although in the late 19th and earlt 20th century, Arabic numerals became fashionable.
  • Pendulum - The pendulum was discovered around 1602 by Galileo Galilei, and was adopted for time keeping by the Dutch mathematician and natural philosopher, Christiaan Huygens, who excelled in astronomy, physics, and horology.

    The pendulum comprises a metal rod usually of brass or steel with a metal disk, known as a bob, at the end. The movement of the pendulum is driven by weights or a spring, and as a pendulum swings in a regular arc, it was found accuracy could be controlled to within a few seconds a week.

    Timekeeping can be adjusted by changing the height of the bob on the rod, making the pendulum either swing slower or faster.

    The disadvantage of the pendulum was that changes in temperature also changed the length of the pendulum, interfering with the accuracy of the clock, and so in the 18th century two types of mercurial pendulums were invented which countered the movement in the steel rod.

    The pendulum was the world's most accurate timekeeping technology until the invention of the quartz clock, regulated by a quartz crystal, in 1927.

This item has been included into following indexes:

Visually similar items

A large and impressive Victorian black slate and malachite triple dial clock, of architectural form with gilded engraved detail and inlaid malachite panels, the central raised enameled dial with exposed escapement and roman numerals flanked by a calendar d

Sold by in for
You can display prices in $Au, $US, $NZ or Stg.

A Seith Thomas spelter cased mantel clock. 23 cm high. (Key in office)

Sold by in for
You can display prices in $Au, $US, $NZ or Stg.

An American mantle clock by 'the Sessions clock Co., enamel dial with arabic numerals, brass outer rim, eight day time & strike movement, enameled wood case with marbalised mouldings & cast bronze detail, with winding key, 27.5 x 32 x 14 cm

Sold by in for
You can display prices in $Au, $US, $NZ or Stg.

A French black marble clock barometer, 49 cm high, 26 cm wide, 17 cm deep

Sold by in for
You can display prices in $Au, $US, $NZ or Stg.