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French Shallow Longcase Regulator by Jarossay
French Shallow Longcase Regulator by Jarossay - Clocks Style Louis-Philippe French Shallow Longcase Regulator by Jarossay - French Shallow Longcase Regulator by Jarossay - Louis-Philippe Antiquités - French Shallow Longcase Regulator by Jarossay
Ref : 64829
Price on Request
Period :
19th century
Artist :
Jarossay
Provenance :
France
Medium :
Mahogany veneer, glass, brass, steel
Dimensions :
l. 15.35 inch X H. 72.83 inch X P. 6.5 inch
Clocks  - French Shallow Longcase Regulator by Jarossay 19th century - French Shallow Longcase Regulator by Jarossay Louis-Philippe - French Shallow Longcase Regulator by Jarossay Antiquités - French Shallow Longcase Regulator by Jarossay
Jacques Nève

Antique Clocks


+32 477 27 19 08
French Shallow Longcase Regulator by Jarossay

French Louis-Philippe period floorstanding regulator (circa 1840) of small size and shallow depth, signed "Chronomètre, système JAROSSAY" on the dial, et "Jarossay à Paris" on the graduated levelling brass plate situated below the pendulum. Mahogany veneered and mahogany case, plain base and removable top plinth, hiding the winding mechanism. Dial with Roman numerals and very fine micrometric graduation with arab numerals marking the five minutes, allowing for accurate time reading with a very precise hour hand only, a sweeping seconds hand has its own smaller dial below XII.
High precision movement with Graham dead-beat escapement with low amplitude, the force provided with a weight and counterweight hung with an endless rope through a system of six pulleys (2 mobile and 4 fixed).
Large polished brass pendulum bob hung by a oval-section steel pendulum rod with precise regulation below.?
The temperature compensation is achieved through a highly unusual and simple system: a second rod identical to the pendulum's is fixed from the bottom and pushes a lever that will in turn indirectly increase the pendulum's length when the temperature rises.

The Parisian clockmaker Louis-Antoine Jarossay (1780-1859) was the son of Urbain Jarossay, also clockmaker in Paris for the Comte d'Artois. The latter installed the turret clock of the Saint-Germain-des-Prés church on behalf of Jean-André Le Paute (1720-1789) in 1781.

Louis-Antoine Jarossay was renowned for his ability to make high quality domestic regulators and is often recognised as one of the more inventive clockmakers of the 19th Century. He is also known to have used endless screw gears in horology, a technology that he studied in depth.
He patented the double-mainspring pulley in 1844 and the use of wormscrews in 1850. This latter invention allowed him to substantially reduce the costs of manufacture without sacrificing quality nor precision.

Delevery information :

All clocks are carefully selected and restored to the highest standards, and are supplied with a full guarantee of authenticity and working order, delivered and installed personally wherever possible.
Shipping and dellivery conditions on request.

Jacques Nève

CATALOGUE

Longcase clock Louis-Philippe