Title: | Clockmaking – [1] First section |

Original Title: | Horlogerie – [1] Première section |

Volume and Page: | Plates vol. 4 (1765) |

Author: | Unknown |

Translator: | Charles Ferguson [Colby College, Emeritus] |

Subject terms: | Clockmaking |

Original Version (ARTFL): | Link |

Rights/Permissions: | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. To use this work in a way not covered by the license, please see http://quod.lib.umich.edu/d/did/terms.html . |

URL: | http://hdl.handle.net/2027/spo.did2222.0001.465 |

Citation (MLA): | "Clockmaking – [1] First section." The Encyclopedia of Diderot & d'Alembert Collaborative Translation Project. Translated by Charles Ferguson. Ann Arbor: Michigan Publishing, University of Michigan Library, 2020. Web. [fill in today's date in the form 18 Apr. 2009 and remove square brackets]. <http://hdl.handle.net/2027/spo.did2222.0001.465>. Trans. of "Horlogerie – [1] Première section," Encyclopédie ou Dictionnaire raisonné des sciences, des arts et des métiers, vol. 4 (plates). Paris, 1765. |

Citation (Chicago): | "Clockmaking – [1] First section." The Encyclopedia of Diderot & d'Alembert Collaborative Translation Project. Translated by Charles Ferguson. Ann Arbor: Michigan Publishing, University of Michigan Library, 2020. http://hdl.handle.net/2027/spo.did2222.0001.465 (accessed [fill in today's date in the form April 18, 2009 and remove square brackets]). Originally published as "Horlogerie – [1] Première section," Encyclopédie ou Dictionnaire raisonné des sciences, des arts et des métiers, vol. 4 (plates) (Paris, 1765). |

The plate captions and some of the legends have been translated. The rest of the legends have been assigned to a translator and will appear in due course.

## Plate I: Clock Making, Weight-Woven Clock

## Plate I Continued: Clock Making, Weight-Woven Clock

## Plate II: Clock Making, Plan of a Horizontal Clock

## Plate II Continued No 1: Clock Making, Profiles of the Wheel Work of the Horizontal Clock

## Plate II Continued No 2: Clock Making, Horizontal Clock, Quarter-Hour Ring

## Plate II Continued No 3: Clock Making, Horizontal Clock, Hour Ring

## Plate II Continued No 4: Clock Making, Development of the Pendulum and Detents of the Horizontal Clock

## Plate III: Clock Making, Spring-Driven Clocks

## Plate IV: Clock Making, Second Clock

## Plate V: Clock Making, Various Escapements

## Plate VI: Clock Making, Quarter-Hour Ring Clock and Ordinary Repeater

## Plate VII: Clock Making, Development of Ordinary Repeater

## Plate VIII: Clock Making, Mercury-Weighted Pendulum and Motion Work of a Julien Le Roy Equation Clock

Figure 35. Compensation thermometer

Figure 36. Compensating pendulum

Figures 37 & 38. Motion work of an equation clock by M. Julien le Roy, described in the article "Equation"

## Plate IX: Clock Making, Motion Work of a Julien Le Roy Equation Clock

## Plate IX Continued No 1: Clock Making, Equation by Dauthiau

Figure 35. Equation clock, by Dauthiau

## Plate IX Continued No 2: Clock Making, Equation Clock by Sir Berthoud

Figure 37. Equation clock, by M. Ferdinand Berthoud

## Plate IX Continued No 3: Clock Making, Equation Clock by Sir Rivaz

Figure 38. Equation clock, by Rivaz

## Plate IX Continued No 4: Clock Making, Equation Clock and Motion Work by Sir Rivaz

Figure 39 A. Dial of the center-seconds equation watch showing dates and months.

Figure 40 A. Motion work plate from the back of the dial

Figure 41 A. Motion work of the equation watch

Figure 36 A. Motion work by Rivaz

Figure 42 A. Leap year, by M. Berthoud

## Plate IX Continued No 5: Clock Making, Equation and Second Concentric Clock Showing Ordinary and Leap Years, Months and Days

Equation clock with center seconds, showing dates, months, and leap years. This clock goes thirteen months on a winding.

## Plate IX Continued No 6: Clock Making, Equation Clock by Sir Amirauld

Equation clock by Amirauld. All the Plates in series IX are described in the article "Equation."

## Plate IX Continued No 7: Clock Making, Equation Clock With Mobile Face

## Plate IX Continued No 8: Clock Making, Equation Clock by Le Bon

Equation clock by le Bon

## Plate IX Continued No 9: Clock Making, Equation Clock by Le Bon

Le Bon's equation clock, continued