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Electric Clock Makers - Index
00 Batteries
ECS English Clock Systems
Kuhne, E
Rivex
00 Electrostatic clocks
Eijsbouts
Kundo - Kieninger and Obe
Roamer Micro Quartz Marin
00 Slave clock collection
Electone
Kusnick-Hennequin
Robert Milne
00 Unknown makers
Electras
Lambert
Robertson clock
Abra watch co
Electric clocks Leningrad
Landis
Rolex
AEG
Electric Self Winder
Laplace
Sangamo Electric Company
AFO Apparatenfabriek
Electro Clock Company
Lebret
Satori
Alcy
Elliott
Lenzkirch
Sauer
Amateur clocks
Ergas
Lepaute
Schatz
American Clock Company
Ericsson
Leroy et Cie
Schauer
American Reminder Cloc(1)
Estyma and related transi
Letorey pneumatic
Schild S.A(1)
Angelus
Etalon
Loisel, A
Schneider, F.W. - Korrekt
Ansonia 'Electric Wind'
Eureka
Longines
Schneider, F.X
Aron - Heliowatt
Ever Ready and Scott
Looping
Schönberg, Gustav
Assa
Everett Edgecumbe
Lowne
Schweizer
Assmann speaking clock
Evershed
Lugrin
Secticon, Portescap
ATE quartz chronometer
EXA
Lux Manufacturing Company
Seiko
Atlantic Clock Company
Farad
Magneta - English
Self Winding Clock Co
Ato
Favag
Magneta Swiss - Fischer
Semca clock
Automatic Electric Clock
Fedchenko
Marchino
Sempire Clock Company Gre
Autophon
Ferat
Margnoux
Sessions Clock Company
Bain
Ferramo - see Bäuerle
Marti
Seth Thomas Clock Co
Bangor Clock Co
Féry
Matthew Norman
Shepherd
Bardon
Fischer Elec Clock Co NY
Mauthe - Dolektra
Shortt Synchronome fre(1)
Barraud and Lund
Fred Frick Clock Co
MEC
Siemens & Halske
Bäuerle
Gensign
Mehne
Silent Electric
Baume & Mercier
Gent
Meisei
Silentia
Bentley
Gilette Electric Clock Co
Mercer and Mercer Octo
Smiths
Benzing
Gillett & Johnston
MF Manufacture Francaise
Sohm Electric Clock Compa
Berger
Girard-Perregaux
Mildé
Solari
Birch and Gaydon
Girod, ODO
Miller Program Clock Co
South Bend Watch Co
Bizerba Chronostat
Gisholt Manufacturing Co
Mirax
Speaking Clocks
Blodgett Bros. & Clock Co
Glashütte (GUB)
Möller, Max
Staiger Chronometron Chro
Bodet
Godineau
Monarch Telephone Co
Standard Electric Cloc(1)
Bohmeyer
Golay
Montre Royale
Standard Electric Time(1)
Borrel
GPO (British General Post
Moser Baer
Standard Time Company UK
Brillié and Vigreux-Brill
Grav- Elec Clock Company
Murday
Steenhans Time-Tronic qua
Bulle
Great Northern Telegraph
National Electric
Sterling
Bulova
Gübelin
National Magnetic Corp
Steuart, Alexander
Bürk (Württembergische Uh
Haddon Products Inc
National Self-Winding Co
Stromberg
Burrell, AG and Co
Hahl Pneumatic
New England Electric Cloc
Stromberg Electric Manufa
Campiche
Hamilton
New Era or Electric Self
Stubner, Paul
Capt
Hammond Clock Company
New Haven Clock Company
Supremo
Carl Gullberg
Hansen Manufacturing Co
New York Standard Watch C
Svenska Elektriska Urf(1)
Carley
Harington and Sons
No-Key Clock
Swissonic
Cartier
Hermle
Normalzeit
Synchron
Cauderay
Herschede Electric Clock
Nufa Holland
Synchronome
Certina
Herz & Sohn
O B McClintock-Loomis Co
Synchronome Australia
Charvet - Delorme
Hesar
Observer marine style clo
Synchronos electric kit c
Château Frères - Collin
Hettich
O'Keenan
SynClock
Chelsea Clock Co(1)
Hipp
Olin
T and N, Elektrozeit, D.E
Chronometron and Chrometr
Hoffmann
Omega
Telavox and Clementa
Cincinnatti Time Recorder
Holden - LR - Exact - Reg
OREL
Telephone Rentals
Citizen
Hopkins, Munroe earth dri
Paauwe
Themis
Clairetta
Houdin Robert
Pacific Electric Clock Co
Thrasher Electric Clocks
Clementa - see telavox fo
Hour Lavigne
Palmer C. F. Pyke
Thwaites & Reed Ltd
Cluses (Ecole de Cluses)
Howard
Patek Philippe
Tiffany , Cloister, Ni(1)
Collin and Wagner
Howard, E Clock Co
Paul Garnier
Time Telegraph
Copal
Huc, Pablo
Pega - W. Zeh
TMC and TEMCo
Cornelius Knudsen
IBM - ITR - National
Perpetua
Trinity Clock & Americ(1)
Cotna
IBM America
Perret, David
TSC Tokyo Sokki Co. Ltd
Coventry Electric Cloc(1)
Imhof
Peweta (Germany)
Uhrenfabrik Mühlheim
Craig capt. E.E
Imperial Clock Co
Peyer Favarger
Ulysse Nardin
Crown by Herschede
Inducta - Landis & Gyr
Poole - Barr
Ungerer
CWC Cabot Watch and Clock
Ingrams and Ingram Brothe
Popp pneumatic
United Clock Corporation
Cyma
Instanta
Pragotron
Urgos
Dansk Normaltid
International
Precisa
US Electric Clock Co. NY
Darche Electric Clock Co
International Time Record
Prentiss Clock Improvemen
Vacotti-Rosi
d'Arsonval chronoscope
Isgus
Princeps
Van Slyke Self Winding Ti
de Jong, F.C
ITF
Prouds
van Vark
Dehomag
ITR
Prud'Homme
Vandeplancke -Tordoir
Dent
Jaeger Lecoultre
Puja (Jundes)
Vaucanson
Derby
Jamin Zenith
Rabe - Hanau
Vedette and Electro-Vedet
Detouche
Jansen, F.W. Clock Co
Radio Electric Clock Corp
Venner
Diehl
Jean Lassale
Radiochron Rada-Chron
Vitascope
Dimep-Alto-Tagus
Jeco
Rapco
VoumardQuartz
Dixi
Jefferson Electric Co
Reclus
Wadsworth
Documents General
Jones, H.E. (Synchronome)
Recta - Clerc (EC)
Wagner
DOLD V.C(1)
Jundes
Reelfs
Wallace & Tiernan Product
Dori
Junghans
Reform
Waltham Electric Clock Co
Drawbaugh Electric Clock
Jura
Reguladora
Warren Clock Company
Droz A
Kappa
RemindoClock
Warren Telechron
Dubois
Kelvin Hughes
Remington-Rand (Remington
Warwick Time Stamp Co
Duboulet(2)
Kennedy Clock Co
Rempe Manufacturing Compa
Waterbury Clock Company
Dudley Railway Clock
Keyless Clock Company
Rex Mundi
Wempe, C.Plath
Dyna
Kienzle
RFT, Elfema
West End Watch Co
E. G. L(1)
Knoblich
Richard and Leutz
Westerstrand
E.N.E.M
Kohler, Karl
Richez, Charles
Wise, S.J
Ebauches, Oscilloquartz
Korfhage and Sohne
Riefler
Zacharia
Eco Magneto
Koseisha
Rigel
Zenith - Jamin
École d'Horlogerie de (1)
Krause
Ritchie, James and Sons
Country of origin
:
The main country in which the clocks were manufactured. If unknown, use `unknown`
Australia
Austria
Belgium
Brazil
Britain
Canada
China
Czechoslovakia
Denmark
Egypt
France
Germany
Italy
Japan
Netherlands
Norway
Portugal
Russia
Spain
Sweden
Switzerland
USA
Unknown
Type of device
Master clock
:
A clock with contacts or any other mechanism to drive slave clocks
Slave dial
:
A clock with no timekeeping mechanism, requires a signal from a master clock to operate
Timeswitch
:
A device primarily designed to switch circuit(s) rather then tell the time
Programmer/bell ringer
:
A master or slave clock with mechanism to send multiple timed impulses to other equipment
Time recorder
:
A device recording time to a graph or chart recorder
Chronoscope
:
For measuring very short periods of time, not a clock
Strike/chime
Strike
:
Strikes hours or part hours
Chime
:
Musical chimes, mechanical or electronic
Case
4 glass case
:
4 glass sides, solid top or back
5 glass case
:
5 glass sides
Brass case
Plastic case
Wooden case
Glass dome round
Glass dome rectangular
Plastic dome round
Plastic dome rectangular
Round wall case
Rectangular wall case
Triangular case
Pyramid case
Portable case
Desk clock
Presentation case
Tank/cylinder
:
Observatory clock with pendulum in cylinder, usually metal or glass.
Timing control
:
Are there any 2/3 sec or 100 beat electric clocks? Yes Favag has 2/3 sec clocks
Balance
Pendulum
Pendulum longer than 1 sec
Pendulum 1 sec
Pendulum ¾ sec
Pendulum 2/3 sec
Pendulum half sec
Pendulum quarter sec or smaller
Quartz / electronic
Other oscillator
Tuning fork
Radio controlled
Synchronous motor driven
:
Includes most AC mains driven clocks
Driving power and reset
:
Ignore remontoire springs
Weight, rewound by hand
:
Traditional wind up clockwith weights on string/chain electric contacts
Weight, rewound by motor
:
eg T&N, Siemens, Wagner, Aron
Weight on lever, electrically reset
:
eg most synchronome, Gents C7, Poole, many early American clocks
Spring
:
Traditional wind up clock with electric contacts
Spring with electric reset/wind
:
eg Moller, Coventry electric, Lugrin
Continuously rotating motor
:
eg some O'Keenan, Steuart
Motor with intermittent winding
:
eg some O'Keenan
Vibration rewound spring
:
eg Carley
(Electro-)magnetic impulse
:
Electromagnet acts directly on pendulum or balance, eg Bulle, Brillie, Eureka
Hipp toggle
:
eg Hipp, Post office 36, Silent Electric
Power supply
Battery
Internal transformer
External low voltage connections
External mains AC connection
Time indicator
:
If no dial or other time indication leave blank
Seconds only
One dial
Two dials
Three dials
More than three dials
Observatory dial
Skeletonised dial/chapter ring
Calendar
Other indicator
Digital flap display
Digital electronic display/nixie
Second hand
No seconds
Centre seconds
Offset seconds or a second dial
Seconds indicator without hand
Link pendulum and movement
:
Gravity arm is not gravity escapement
Conventional clock escapement
:
eg early Synchronome, Gent Thornbridge
Gravity escapement
:
eg Ritchie slaves
Count wheel
:
eg most synchronome, Gents C7, Silent Electric, Post office 36 and 46, Brillie, Bardon
Electronic/optical
:
Mostly experimental and late 20th century
None – free pendulum
:
None – free pendulum rare clocks usually with two pendulums or modern with electromagnetic impulsing
Slave or pilot dial movement
Impulse movement
:
Armature turns count wheel, eg synchronome, Gents
Rotary movement
:
Coils spin armature, eg silent electric, T&N, Hipp slaves
Swinging arm/magnet
:
eg some Garnier, some G&J
Pneumatic
:
eg Hahl, Letory
Slave circuit
Unipolar
:
Most UK clocks 1840-1960
Alternating polarity
:
Most European clocks
More than 2 wires
:
Later systems with central slave adjustment
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Unknown maker
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