The Practical Watch Escapement

Informationen zum Autor George Daniels Klappentext The Practical Watch Escapement explains the action of the escapement in terms accessible to both expert and layman. One of George Daniels' central contributions to horology is his co-axial escapement. Having observed that the dominant lever escapement begins to change its rate after a year or two - a disturbance caused by the sliding action of the impulse elements of the escapement - Daniels set about developing a mechanism that avoided this problem.The result of his efforts was the co-axial escapement, a mechanism in which he sought to combine the strengths and eliminate the deficiencies of existing watch escapements, the lever escapement foremost among them. First devised in 1977, today it remains largely the same as fitted in watches of Daniels' own manufacture, as well as those of several wrist-watch manufacturers.The text is accompanied by a series of detailed line drawings. Vorwort This book explains the action of the escapement in terms accessible to both expert and layman, and is accompanied by a series of detailed line drawings. Zusammenfassung One of George Daniels' central contributions to horology is his co-axial escapement. This book explains the action of the escapement in terms accessible to both expert and layman. Inhaltsverzeichnis Foreword Introduction General PrinciplesVerge Escapement Cylinder EscapementVirgule Escapement Duplex Escapement Lever EscapementEscaping AngleLever AngleThe Draw AngleThe Balance Roller The Pallets and Escape WheelDetent Escapement The Unlocking AngleThe Angle of DrawThe Locking StonePivoted DetentThe Impulse Angle Radial Impulse at Each VibrationRobin Escapement Echappement NaturelSummary Detached Escapements without lubricantIndependent Double Wheel Escapement Double Radial Impulse with Single WheelCo-Axial EscapementExtra Flat Co-Axial EscapementSymmetrical Co-Axial EscapementPhotographic Plates ...

Préface
This book **explains the action of the escapement in terms accessible to both expert and layman, and is accompanied by a series of detailed line drawings.

Auteur

George Daniels

Texte du rabat

The Practical Watch Escapement explains the action of the escapement in terms accessible to both expert and layman. One of George Daniels' central contributions to horology is his co-axial escapement. Having observed that the dominant lever escapement begins to change its rate after a year or two - a disturbance caused by the sliding action of the impulse elements of the escapement - Daniels set about developing a mechanism that avoided this problem. The result of his efforts was the co-axial escapement, a mechanism in which he sought to combine the strengths and eliminate the deficiencies of existing watch escapements, the lever escapement foremost among them. First devised in 1977, today it remains largely the same as fitted in watches of Daniels' own manufacture, as well as those of several wrist-watch manufacturers. The text is accompanied by a series of detailed line drawings.

Résumé
One of George Daniels' central contributions to horology is his co-axial escapement. This book explains the action of the escapement in terms accessible to both expert and layman.

Contenu
Foreword Introduction General Principles Verge Escapement Cylinder Escapement Virgule Escapement Duplex Escapement Lever Escapement Escaping Angle Lever Angle The Draw Angle The Balance Roller The Pallets and Escape Wheel Detent Escapement The Unlocking Angle The Angle of Draw The Locking Stone Pivoted Detent The Impulse Angle Radial Impulse at Each Vibration Robin Escapement Echappement Naturel Summary Detached Escapements without lubricant Independent Double Wheel Escapement Double Radial Impulse with Single Wheel Co-Axial Escapement Extra Flat Co-Axial Escapement Symmetrical Co-Axial Escapement Photographic Plates