Clocks · Regulator
Domestic Regulator Clock by Pryor, London, c. 1805
- Maker / attribution
- Pryor (maker)
- Date
- c. 1805
- Historical period
- Precision & Scientific Horology (1750 – 1850)
- Country of origin
- England
- Place
- London
- Object type
- Regulator
- Stock no.
- 442
- Credit line
- Dealer listing, Pendulum of Mayfair (442)
- Catalogue title (original)
- Antique Domestic Regulator Clock by Pryor – London C.1805 (English)
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Record summary
Catalogued by Pendulum of Mayfair (dealer), London (stock number 442), this is a regulator by Pryor, made in London, England, dated c. 1805. The Atlas places it in the Precision & Scientific Horology period (1750 – 1850) of its Clocks collection. The record is illustrated with 6 photographs.
Assembled from the source record's structured fields. Dates and attributions are given as the source states them; where a field is missing the Atlas leaves it blank rather than estimating.
Catalogue description
Dealer description — Pendulum of Mayfair
Outstanding ‘8 day’ duration regulator clock. Featuring flame veneered mahogany cabinet by Pryor of London. Also with round silvered brass dial. Typical regulator dial layout. Features like dead beat escapement to movement. Another being bolt and shutter maintaining power. Lastly stunning mahogany cabinet of London design. Clearly a lovely clock for the specialist collector. Antique Grandfather Clocks
Historical context
Precision & Scientific Horology (1750 – 1850)
Harrison solves longitude; Mudge invents the lever; Breguet's Paris workshop defines the modern watch.
The age of the deadbeat escapement, compensated pendulums and observatory regulators. Domestic clocks spread through the middle classes: English longcase and bracket clocks, French gilt-bronze mantel clocks, Viennese Biedermeier wall clocks, Black Forest painted-shield clocks, and the first American shelf clocks.
Read the period in the timelineMore clocks from this periodEarlier: Early Modern Horology
Atlas type guide
Regulators, wall and Vienna clocks
A regulator is a precision pendulum clock used as a time standard in observatories, workshops and railway offices. Typical features are a deadbeat or Graham escapement, a temperature-compensated pendulum (mercury jar, gridiron or later invar), maintaining power and a regulator dial that separates hours, minutes and seconds. George Graham's deadbeat escapement (c. 1715) and his mercury pendulum, together with Harrison's gridiron, set the pattern for two centuries.
Wall clocks span a much wider range: the elegant Viennese Laterndluhr and Dachluhr of the Biedermeier period, the Dutch stoelklok and staartklok, English 'dial' clocks used in schools, offices and railway stations, and mass-produced spring and weight wall clocks from Germany (Gustav Becker, Junghans, Kienzle) and America.
What to look for
- Deadbeat escapement and compensated pendulum (gridiron rods, mercury jar or wood rod).
- A regulator dial with a large central minute hand and separate hour and seconds dials.
- Vienna regulators: glazed cases, slender pendulum, small weights, enamel two-piece dials.
- German factory trademarks stamped on the backplate (e.g. Gustav Becker anchor and crown, Junghans star).
Dating clues
- Graham-type deadbeat regulators: from c. 1720.
- Viennese Laterndluhr: c. 1800–1850.
- German factory 'Vienna-style' regulators: c. 1870–1930; Gustav Becker serial numbers allow close dating.
General guidance written by the Atlas editors about this kind of object. It is not a statement about this particular piece; for that, rely on the source record above and on physical examination.
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