Congreve rolling ball clock - Silvered brass clockwork under a glass case. - 2022
03
days
12
hours
40
minutes
45
seconds
Current bid
€ 250
No reserve price
Expert
Selected by Justus Heutink
Holds broad knowledge of religious icons with six years of collecting experience.
Estimate € 1,300 - € 1,500
70 other people are watching this object
 | €250 | |
|---|---|---|
 | €250 | |
| €220 | |
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Estimated period: 2022; Material: silver-plated brass movement under a glass case; Style: Congreve rolling ball clock.
AI-assisted summary
Description from the seller
Silvered skeleton clock with a snake escapement under a glass case.
Dials for hours, minutes, day of the week, date, and a indicator for the seconds as the ball rolls over the tableau.
Very handsome reproduction of a Congreve Roller Ball – produced in China.
Instead of a pendulum, drive is provided by a small ball that moves back and forth across a silvered tableau – the “rolling ball.”
The ball travels back in 12 seconds and forward again in 12 seconds.
A beautiful clock and a true conversation piece.
Operation is shown on YouTube:
https://www.youtube.com/watch?v=7ax4tOSKxCA (messing movement).
Wooden base 30 cm x 27 cm.
Overall height 41 cm.
The Rolling Ball Clock was patented by Sir William Congreve in 1808.
The basic concept is that the ball takes 12 to 30 seconds to roll along the zigzag track, causing the escapement to move. As a result, the angle of the tray reverses and the hands move forward accordingly.
The 8-day movement is protected by a square glass dome.
The movement sits on a wooden console with three adjustable ball feet.
The clock movement has been checked by a clockmaker and functions well.
Ideally the ball would always take exactly the same amount of time to roll across the track, but that is not the case. Each speck of dust will hinder the ball’s roll and slow it down – and even under a glass dome or in a case there is dust. Moreover, metal expands or contracts with temperature changes, causing the length of the track and the size of the ball to change. Therefore the clock will never run perfectly on time.
Clock comes with a winding key.
Auction is sent in two parcels (glass dome separately), by registered and insured mail, hence slightly higher shipping costs.
Seller's Story
Past and Present was founded in 1989 and sells a tasteful mix of decorative objects, antiques and curiosities.
We are proud of our "not satisfied, money back" guarantee.
Our aim is to keep the positive feedback score above 98%.
Satisfied customers are our top priority and we will do everything for this.
Every week we are looking for special objects, mostly antiques, but also decorative objects with the charm of antiques.
Translated by Google TranslateSilvered skeleton clock with a snake escapement under a glass case.
Dials for hours, minutes, day of the week, date, and a indicator for the seconds as the ball rolls over the tableau.
Very handsome reproduction of a Congreve Roller Ball – produced in China.
Instead of a pendulum, drive is provided by a small ball that moves back and forth across a silvered tableau – the “rolling ball.”
The ball travels back in 12 seconds and forward again in 12 seconds.
A beautiful clock and a true conversation piece.
Operation is shown on YouTube:
https://www.youtube.com/watch?v=7ax4tOSKxCA (messing movement).
Wooden base 30 cm x 27 cm.
Overall height 41 cm.
The Rolling Ball Clock was patented by Sir William Congreve in 1808.
The basic concept is that the ball takes 12 to 30 seconds to roll along the zigzag track, causing the escapement to move. As a result, the angle of the tray reverses and the hands move forward accordingly.
The 8-day movement is protected by a square glass dome.
The movement sits on a wooden console with three adjustable ball feet.
The clock movement has been checked by a clockmaker and functions well.
Ideally the ball would always take exactly the same amount of time to roll across the track, but that is not the case. Each speck of dust will hinder the ball’s roll and slow it down – and even under a glass dome or in a case there is dust. Moreover, metal expands or contracts with temperature changes, causing the length of the track and the size of the ball to change. Therefore the clock will never run perfectly on time.
Clock comes with a winding key.
Auction is sent in two parcels (glass dome separately), by registered and insured mail, hence slightly higher shipping costs.
Seller's Story
Past and Present was founded in 1989 and sells a tasteful mix of decorative objects, antiques and curiosities.
We are proud of our "not satisfied, money back" guarantee.
Our aim is to keep the positive feedback score above 98%.
Satisfied customers are our top priority and we will do everything for this.
Every week we are looking for special objects, mostly antiques, but also decorative objects with the charm of antiques.
Translated by Google TranslateDetails
Era
After 2000
Clock type
Congreve rolling ball clock
Material
Silvered brass clockwork under a glass case.
Clock mechanism
Mechanical
Power reserve
8 day movement
Striking
Not striking
Country of origin
United Kingdom
Condition
Excellent condition: barely used with minimal signs of wear
In working order
Yes
Height
41 cm
Width
28 cm
Depth
27 cm
Estimated period
2022
Weight
8.2 kg
Winding key
Yes
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