History
Century
- XV
- XVI
- XVII
-
XVIII
- Abraham Louis Perrelet
- Abraham-Louis Breguet
- Antide Janvier
- Edward John Dent
- Ferdinand Berthoud
- Frédéric Japy
- Frédéric Louis Favre-Bulle
- Henri Louis Jaquet-Droz
- J. Louis Benjamin Audemars
- Jacques Frédéric Houriet
- James Cox
- Jean André Lepaute
- Jean Antoine Lépine
- Jean François Bautte
- Jean Frédéric Leschot
- Jean Moïse Pouzait
- Jean-Baptiste Schwilgué
- John Arnold
- John Ellicot
- Joseph-Thaddeus Winnerl
- Josiah Emery
- Louis Antoine Breguet
- Louis Moinet
- Louis-Frédéric Perrelet
- Pierre Augustin Caron dit Beaumarchais
- Pierre Frédéric Ingold
- Pierre Jaquet-Droz
- Pierre Le Roy
- Pierre-Louis Berthoud
- Robert Robin
- Thomas Earnshaw
- Thomas Mudge
- Urban Jürgensen
- William James Frodsham
-
XIX
- Aaron L. Dennison
- Achille Brocot
- Antoine Le Coultre
- Antoine Léchaud
- Auguste Lucien Vérité
- Charles Fasoldt
- Charles Frodsham
- Charles-Edouard Guillaume
- Constant Girard
- Edmond Jaeger
- Edouard Koehn Sr
- Edward Howard
- Ferdinand Adolph Lange
- Georges Frédéric Roskopf
- Georges-Auguste Leschot
- Hans Wilsdorf
- Henri Grandjean
- Henri Lepaute
- Henri Robert Ekegren
- Jean Celamis Lutz
- Jean Eugène Robert-Houdin
- Jean-Adrien Philippe
- John Harwood
- Jules Jürgensen
- Julien-Hilaire Rodanet
- Karl Moritz Grossmann
- Louis Leroy
- Louis Richard
- Louis-Clément Breguet
- Lyman W. Tompson
- Nicolas Mathieu Rieussec
- Sylvain Mairet
- Ulysse Nardin
- Victor Kullberg
Julien Le Roy
1686-1759
French clockmaker.
Master 1713.
Juror 1735.
Watchmaker to the King in 1739.
Circa 1725
Invention of an adjustable bracket for the verge escapement wheel. It was found on most French verge escapements from the second half of the eighteenth century.
1727
Adoption of George Graham's cylinder escapement which he frequently used, preferably the verge escapement.
1738
Invented a compensating pendulum.
New (horizontal) construction for edifice clocks.
A specialist in repetition watches. He is said to have invented the straight gong used to make the flattest mechanisms. He is also said to have made so-called “à toc” repetitions named after the sound of the hammer striking a block fixed on the case. He is supposed to have miniaturised the clock anchor escapement to regulate the speed of the chime.
HH Magazine News
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