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El. knyga: British Domestic Synchronous Clocks 1930-1980: The Rise and Fall of a Technology

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This book complements available one-make books on domestic synchronous clocks. It is also a history of science book that sets British domestic synchronous clocks, their manufacturers and technology in their social context.

Part I covers the historical background, British domestic synchronous clock manufacturers and brands, how synchronous clocks work, domestic synchronous clock cases, practical advice on the servicing of domestic synchronous clocks and analysis of the marketing and reliability of British domestic synchronous clocks. This analysis provides an explanation of the rise and eventual fall of their technology. Part II contains galleries of a selection of British domestic synchronous clocks and of the movements with which they are fitted. There is a front and back view of each clock, together with a brief description. Views of each movement include views with the movement partly dismantled, together with a brief technical description of the movement.

This profusely illustrated book is primarily for fellow enthusiasts and is based on an extensive archive of information on domestic synchronous clocks, their movements and their manufacturers. Current electrical regulations mean that professional clockmakers are reluctant to repair synchronous clocks. In fact, provided that they have not been mistreated, synchronous clocks are usually reliable, and quite easy to maintain. 

Recenzijos

A very useful book that chronicles and illustrates this particular field of horology. the book mentions the motors that are used in domestic timers (indeed, a synchronous motor powers the turntable in every microwave oven!). the main value of the book is in the galleries of photographs of the huge variety of clocks . The many illustrations will be helpful to enthusiasts who can still buy these clocks quite cheaply to build up collections. (Doug Bateman, Antiquarian Horology, June, 2015)

This book is a unique and very useful addition to the working library of any clock collector or clock restorer interested in, or working on, British made, electrically driven mechanical clocks made between 1930 and 1980. There simply is no other publication, in or out of print, that covers the subject in the same depth and detail. Any serious electrical horologist, professional or enthusiast alike, needs this book in their library. (Fortunat Mueller-Maerki, The Horological Journal, May, 2015)

1 Introduction
1(14)
1.1 Outline
1(1)
1.2 What Is a Synchronous Clock?
2(1)
1.3 Historical Background
3(4)
1.3.1 Mechanical Clocks
3(1)
1.3.2 Synchronous Clocks
4(2)
1.3.3 Quartz Clocks
6(1)
1.3.4 Atomic Clocks
6(1)
1.3.5 Timelines
6(1)
1.4 AC Mains Supply
7(2)
1.5 User Experience
9(1)
References
10(5)
Part I Main Text
2 Manufacturers and Brands
15(18)
2.1 Introduction
15(3)
2.1.1 Trade Associations
16(1)
2.1.2 Synchronous Clock Production
17(1)
2.1.3 Identification of Synchronous Clocks
17(1)
2.2 Brands
18(1)
2.3 Manufacturers
19(12)
2.3.1 Alexander Clark Co Ltd
21(1)
2.3.2 British Vacuum Cleaner & Engineering Co Ltd
21(1)
2.3.3 Camerer, Kuss & Co
21(1)
2.3.4 Clyde Clocks
22(1)
2.3.5 Edison Swan Electric Co
22(1)
2.3.6 Elco Clocks and Watches Ltd
22(1)
2.3.7 Ferranti Ltd
23(1)
2.3.8 Franco-British Electrical Co Ltd
23(1)
2.3.9 Garrard Clocks Ltd
23(1)
2.3.10 General Electric Co Ltd
24(1)
2.3.11 Horstmann Gear Co Ltd
25(1)
2.3.12 Ingersoll Ltd
25(1)
2.3.13 Ismay Industries
26(1)
2.3.14 Jentique Ltd
26(1)
2.3.15 Liberty plc
27(1)
2.3.16 Metalair Ltd
27(1)
2.3.17 Sangamo Weston Ltd
27(1)
2.3.18 Smiths Industries
28(1)
2.3.19 Synchronome Co Ltd
29(1)
2.3.20 Telephone Manufacturing Co
29(1)
2.3.21 Westclox Ltd
30(1)
References
31(2)
3 How a Synchronous Clock Works
33(24)
3.1 Introduction
33(2)
3.2 Synchronous Motors
35(15)
3.2.1 Reluctance Synchronous Motors
36(2)
3.2.2 Magnetised Synchronous Motors
38(3)
3.2.3 Magnetic Impulses
41(5)
3.2.4 Starting Methods
46(4)
3.2.5 Hand Setting Methods
50(1)
3.3 Reduction Gear
50(1)
3.4 Striking and Chiming Work
51(1)
3.5 Synchronous Time Switches
52(2)
References
54(3)
4 Synchronous Clock Cases
57(14)
4.1 Introduction
57(2)
4.1.1 Synchronous Clock Case Types
58(1)
4.2 Synchronous Clock Case Styles
59(10)
4.2.1 Art Deco Clocks
60(1)
4.2.2 Bakelite Clocks
60(2)
4.2.3 Carriage Clocks
62(1)
4.2.4 Chinoiserie Clocks
62(1)
4.2.5 Commemorative Clocks
63(2)
4.2.6 Geometric Clocks
65(1)
4.2.7 G-Plan Style Clocks
65(1)
4.2.8 Napoleon's Hat Clocks
66(1)
4.2.9 Pictorial Clocks
66(1)
4.2.10 Utility Clocks
67(1)
4.2.11 Wrought Iron Clocks
67(1)
4.2.12 Novelty Clocks
68(1)
References
69(2)
5 Servicing of Synchronous Clocks
71(10)
5.1 Introduction
71(1)
5.2 Electrical Faults
72(1)
5.3 Mechanical Faults
73(7)
5.3.1 Dismantling
73(4)
5.3.2 Cleaning and Oiling
77(1)
5.3.3 Re-assembly and Testing
78(2)
References
80(1)
6 Analysis of Marketing and Reliability
81(14)
6.1 Introduction
81(2)
6.2 Analysis of Marketing
83(6)
6.2.1 Marketing Strategies
83(1)
6.2.2 Technical Aspects
84(1)
6.2.3 Clock Case Design
85(2)
6.2.4 Practical Aspects of Design
87(1)
6.2.5 Distribution
87(1)
6.2.6 Legal Framework
87(2)
6.2.7 Conclusions on Marketing
89(1)
6.3 Analysis of Reliability
89(2)
6.3.1 AC Mains Supply
89(1)
6.3.2 Determination of Reliability
90(1)
6.3.3 Conclusions on Reliability
91(1)
6.4 The Rise and Fall of a Technology
91(1)
References
92(3)
Part II Galleries
7 Gallery of Synchronous Mantel Clocks
95(40)
7.1 Introduction
95(1)
7.2 Alexander Clark Clock
96(1)
7.3 BEM Clock
96(1)
7.4 Camerer Kuss & Co Clock
97(1)
7.5 Clyde Clocks
98(1)
7.6 Ediswan Clock
98(1)
7.7 Elco Clocks
99(2)
7.8 Empire Clock
101(1)
7.9 Ferranti Clocks
101(2)
7.10 Garrard Clocks
103(1)
7.11 Genalex Clocks
104(3)
7.12 Ingersoll Clocks
107(1)
7.13 Liberty Clock
107(1)
7.14 Marigold Clock
108(1)
7.15 Metalair Clock
109(1)
7.16 Metamec Clocks
110(1)
7.17 Riley Clock
111(1)
7.18 Smith Clock, Type 1 Striking Movement
112(1)
7.19 Smith Clock, Westminster Chiming Movement
112(1)
7.20 Smith Clocks, BM7 Movement
113(4)
7.21 Smith Clocks, Bijou Movement
117(3)
7.22 Smith Clock, QAT Movement
120(1)
7.23 Smith Clocks, QEMG Movement
121(2)
7.24 Synchronomains Clock
123(1)
7.25 Temco Clocks, Mark I Movement
123(2)
7.26 Temco Clocks, Mark IV Movement
125(2)
7.27 Temco Clocks, Mark V Movement
127(5)
7.28 Temco Clocks, Smith Movement
132(1)
7.29 Conclusions
133(1)
References
133(2)
8 Gallery of Synchronous Bedside Clocks
135(30)
8.1 Introduction
135(1)
8.2 Bowden & Sons Clock
136(1)
8.3 Elco Clock
136(1)
8.4 Ferranti Clocks
137(3)
8.5 Franco British Electrical Co Ltd Clock
140(1)
8.6 GEC Clock
140(1)
8.7 Genalex Clock
141(1)
8.8 Goblin Clock
141(1)
8.9 Kelnore Clock
142(1)
8.10 Magneta Clock
143(1)
8.11 Metamec Clocks
143(2)
8.12 Smith Clocks, Type 1 Movement
145(2)
8.13 Smith Clocks, BM7 Movement
147(3)
8.14 Smith Clocks, Bijou Movement
150(3)
8.15 Smith Clock, QGEM Movement
153(1)
8.16 Sterling Clocks
153(2)
8.17 Synchronomains Clock
155(1)
8.18 Temco Clock, Mark II Movement
155(2)
8.19 Temco Clocks, Mark IV Movement
157(2)
8.20 Temco Clocks, Mark V Movement
159(4)
8.21 Conclusions
163(1)
References
164(1)
9 Gallery of Synchronous Wall Clocks
165(14)
9.1 Introduction
165(1)
9.2 English Clock Systems Clock
166(1)
9.3 Genalex Clock
166(1)
9.4 Horstmann Time Switch
167(1)
9.5 Magneta Clock
167(2)
9.6 Metalair Clock
169(1)
9.7 Metamec Clock
169(1)
9.8 Smith Clock, Type 1 Movement
170(1)
9.9 Smith Clock, BM7 Movement
170(1)
9.10 Smith Clocks, BM39 Movement
171(2)
9.11 Smith Clock, Heavy Motion Work Movement
173(1)
9.12 Smith Clocks, Bijou Movement
173(2)
9.13 Synchronome Clocks
175(1)
9.14 Temco Clock, Mark V Movement
176(1)
9.15 Westclox Clock
176(1)
9.16 Conclusions
177(1)
References
178(1)
10 Gallery of Synchronous Granddaughter Clocks
179(6)
10.1 Introduction
179(1)
10.2 Ferranti Clock
179(1)
10.3 Smith Clock, Type 1 Chiming Movement
180(1)
10.4 Smith Clock, Type 1 Movement
181(1)
10.5 Temco Clock, Mark IV Movement
182(1)
10.6 Conclusions
183(1)
References
183(2)
11 Gallery of Synchronous Movements
185
11.1 Introduction
185(1)
11.2 BEM Movement
186(1)
11.3 Clyde Movement
187(1)
11.4 Elco Movement
187(2)
11.5 Empire Movements
189(2)
11.5.1 Empire Movement
191(1)
11.5.2 Empire Movement for Synchronomains
191(1)
11.6 Ferranti Movements
191(3)
11.6.1 Ferranti Early Movement
191(3)
11.6.2 Ferranti Later Movement
194(1)
11.7 Garrard Movements
194(6)
11.7.1 Garrard Early Movement
197(1)
11.7.2 Garrard Later Movement
197(3)
11.8 Goblin and Magneta Movements
200(2)
11.8.1 Goblin M.6. Movement
200(1)
11.8.2 Magneta Early Movement
200(1)
11.8.3 Magneta Later Movement
201(1)
11.9 Kelnore Movement
202(1)
11.10 Marigold Movement
203(4)
11.11 Metalair Movement
207(1)
11.12 Metamec Movements
207(4)
11.12.1 Metamec Type I Movement
207(2)
11.12.2 Metamec SS101 Movement
209(2)
11.13 Smith Movements
211(24)
11.13.1 Smith Type 1 Movement
212(2)
11.13.2 Smith BM7 Movement
214(2)
11.13.3 Smith BM39 Movement
216(1)
11.13.4 Smith Heavy Motion Work Movement
217(2)
11.13.5 Smith Bijou Movement
219(2)
11.13.6 Smith QAT Movement
221(3)
11.13.7 Smith QEMG Movement
224(2)
11.13.8 Smith QGEM Movement
226(1)
11.13.9 Smith Type 1 Striking Movement
227(1)
11.13.10 Smith Narrow Striking Movement
228(3)
11.13.11 Smith Type 1 Chiming Movement
231(2)
11.13.12 Smith Model 259 Chiming Movement
233(1)
11.13.13 Smith Westminster Chiming Movement
233(2)
11.14 Sterling Movement
235(1)
11.15 Temco Movements
236(7)
11.15.1 Temco Mark I Movement
237(1)
11.15.2 Temco Mark II Movement
238(1)
11.15.3 Temco Mark IV Movement
239(1)
11.15.4 Temco Mark V Movement
240(3)
11.16 Westclox Type No. BM25 Movement
243(2)
11.17 Conclusions
245(1)
References
246
Leslie Philip (Les) Pook was born in Middlesex, England in 1935. He obtained a BSc in metallurgy from the University of London in 1956. He started his career at Hawker Siddeley Aviation Ltd, Coventry in 1956. In 1963 he moved to the National Engineering Laboratory, East Kilbride, Glasgow. In 1969, while at the National Engineering Laboratory, he obtained a PhD in mechanical engineering from the University of Strathclyde. Dr Pook moved to University College London in 1990. He retired formally in 1998 but remained professionally active in the fields of metal fatigue and fracture mechanics and was a visiting professor at University College London until 2009. He now has more tine to pursue long standing interests in recreational mathematics, including flexagons and in horology, especially synchronous electric clocks. He is a Fellow of the Institution of Mechanical Engineers, a Fellow of the Institute of Materials, Minerals and Mining and a Fellow of the European Structural Integrity Society. Les married his wife Ann in 1960. They have a daughter, Stephanie and a son, Adrian.
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