
The Practical Watch Escapement
George Daniels(Author)
Philip Wilson Publishers Ltd
Published on 23. November 2016
Book
Hardback
96 pages
978-0-85667-687-1 (ISBN)
Description
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.
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.
More details
Language
English
Place of publication
London
United Kingdom
Illustrations
8 pages of colour images
Dimensions
Height: 266 mm
Width: 195 mm
Thickness: 20 mm
Weight
603 gr
ISBN-13
978-0-85667-687-1 (9780856676871)
Copyright in bibliographic data and cover images is held by Nielsen Book Services Limited or by the publishers or by their respective licensors: all rights reserved.
Schweitzer Classification
Person
George Daniels, CBE, DSC (HONS), FSA, FCGI, FBHI, FAWI was a practicing horologist with over fifty years experience in both antiquarian and modern watchmaking, and a pastmaster of the Worshipful Company of Clockmakers. Amongst his awards for contribution to the art and science of watchmaking - including the design of his own escapements - are the Tompion Gold Medal, The British Horological Institute Gold Medal, The City and Guilds of London Gold Medal, The Arts Sciences and Learning Award of the City of London and the Victor Kullberg Medal of the Stockholm Watchmakers' Guild.
Content
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
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