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Electric Clock Makers - Index
00 Batteries
ECS English Clock Systems
Kundo - Kieninger and Obe
Rivex
00 Electrostatic clocks
Eijsbouts
Kusnick-Hennequin
Roamer Micro Quartz Marin
00 Slave clock collection
Electone
Lambert
Robert Milne
00 Unknown makers
Electras
Landis
Robertson clock
Abra watch co
Electric clocks Leningrad
Laplace
Rolex
AEG
Electric Self Winder
Lebret
Sangamo Electric Company
AFO Apparatenfabriek
Electro Clock Company
Lenzkirch
Satori
Alcy
Elliott
Lepaute
Sauer
Amateur clocks
Ergas
Leroy et Cie
Schatz
American Clock Company
Ericsson
Letorey pneumatic
Schauer
American Reminder Cloc(1)
Estyma and related transi
Loisel, A
Schild S.A(1)
Angelus
Etalon
Longines
Schneider, F.W. - Korrekt
Ansonia 'Electric Wind'
Eureka
Looping
Schneider, F.X
Aron - Heliowatt
Ever Ready and Scott
Lowne
Schönberg, Gustav
Assa
Everett Edgecumbe
Lugrin
Schweizer
Assmann speaking clock
Evershed
Lux Manufacturing Company
Secticon, Portescap
ATE quartz chronometer
EXA
Magneta - English
Seiko
Atlantic Clock Company
Farad
Magneta Swiss - Fischer
Self Winding Clock Co
Ato
Favag
Marchino
Semca clock
Automatic Electric Clock
Fedchenko
Margnoux
Sempire Clock Company Gre
Autophon
Ferat
Marti
Sessions Clock Company
Bain
Féry
Matthew Norman
Seth Thomas Clock Co
Bangor Clock Co
Fischer Elec Clock Co NY
Mauthe - Dolektra
Shepherd
Bardon
Fred Frick Clock Co
MEC
Shortt Synchronome fre(1)
Barraud and Lund
Gensign
Mehne
Siemens & Halske
Bäuerle
Gent
Meisei
Silent Electric
Baume & Mercier
Gilette Electric Clock Co
Mercer and Mercer Octo
Silentia
Bentley
Gillett & Johnston
MF Manufacture Francaise
Smiths
Benzing
Girard-Perregaux
Mildé
Sohm Electric Clock Compa
Berger
Girod, ODO
Miller Program Clock Co
Solari
Birch and Gaydon
Gisholt Manufacturing Co
Mirax
South Bend Watch Co
Bizerba Chronostat
Glashütte (GUB)
Möller, Max
Speaking Clocks
Blodgett Bros. & Clock Co
Godineau
Monarch Telephone Co
Staiger Chronometron Chro
Bodet
Golay
Montre Royale
Standard Electric Cloc(1)
Bohmeyer
GPO (British General Post
Moser Baer
Standard Electric Time(1)
Borrel
Grav- Elec Clock Company
Murday
Standard Time Company UK
Brillié and Vigreux-Brill
Great Northern Telegraph
National Electric
Steenhans Time-Tronic qua
Bulle
Gübelin
National Magnetic Corp
Sterling
Bulova
Haddon Products Inc
National Self-Winding Co
Steuart, Alexander
Bürk (Württembergische Uh
Hahl Pneumatic
New England Electric Cloc
Stromberg
Burrell, AG and Co
Hamilton
New Era or Electric Self
Stromberg Electric Manufa
Campiche
Hammond Clock Company
New Haven Clock Company
Stubner, Paul
Capt
Hansen Manufacturing Co
New York Standard Watch C
Supremo
Carl Gullberg
Harington and Sons
No-Key Clock
Svenska Elektriska Urf(1)
Carley
Hermle
Normalzeit
Swissonic
Cartier
Herschede Electric Clock
Nufa Holland
Synchron
Cauderay
Herz & Sohn
O B McClintock-Loomis Co
Synchronome
Certina
Hesar
Observer marine style clo
Synchronome Australia
Charvet - Delorme
Hettich
O'Keenan
Synchronos electric kit c
Château Frères - Collin
Hipp
Olin
SynClock
Chelsea Clock Co(1)
Hoffmann
Omega
T and N, Elektrozeit, D.E
Chronometron and Chrometr
Holden - LR - Exact - Reg
OREL
Telavox and Clementa
Cincinnatti Time Recorder
Hopkins, Munroe earth dri
Paauwe
Telephone Rentals
Citizen
Houdin Robert
Pacific Electric Clock Co
Themis
Clairetta
Hour Lavigne
Palmer C. F. Pyke
Thrasher Electric Clocks
Clementa - see telavox fo
Howard
Patek Philippe
Thwaites & Reed Ltd
Cluses (Ecole de Cluses)
Howard, E Clock Co
Paul Garnier
Tiffany , Cloister, Ni(1)
Collin and Wagner
Huc, Pablo
Pega - W. Zeh
Time Telegraph
Copal
IBM - ITR - National
Perpetua
TMC and TEMCo
Cornelius Knudsen
IBM America
Perret, David
Trinity Clock & Americ(1)
Cotna
Imhof
Peweta (Germany)
TSC Tokyo Sokki Co. Ltd
Coventry Electric Cloc(1)
Imperial Clock Co
Peyer Favarger
Uhrenfabrik Mühlheim
Craig capt. E.E
Inducta - Landis & Gyr
Poole - Barr
Ulysse Nardin
Crown by Herschede
Ingrams and Ingram Brothe
Popp pneumatic
Ungerer
CWC Cabot Watch and Clock
Instanta
Pragotron
United Clock Corporation
Cyma
International
Precisa
Urgos
Dansk Normaltid
International Time Record
Prentiss Clock Improvemen
US Electric Clock Co. NY
Darche Electric Clock Co
Isgus
Princeps
Vacotti-Rosi
d'Arsonval chronoscope
ITF
Prouds
Van Slyke Self Winding Ti
de Jong, F.C
ITR
Prud'Homme
van Vark
Dehomag
Jaeger Lecoultre
Puja (Jundes)
Vandeplancke -Tordoir
Dent
Jamin Zenith
Rabe - Hanau
Vaucanson
Derby
Jansen, F.W. Clock Co
Radio Electric Clock Corp
Vedette and Electro-Vedet
Detouche
Jean Lassale
Radiochron Rada-Chron
Venner
Diehl
Jeco
Rapco
Vitascope
Dimep-Alto-Tagus
Jefferson Electric Co
Reclus
VoumardQuartz
Dixi
Jones, H.E. (Synchronome)
Recta - Clerc (EC)
Wadsworth
Documents General
Jundes
Reelfs
Wagner
DOLD V.C(1)
Junghans
Reform
Wallace & Tiernan Product
Dori
Jura
Reguladora
Waltham Electric Clock Co
Drawbaugh Electric Clock
Kappa
RemindoClock
Warren Clock Company
Droz A
Kelvin Hughes
Remington-Rand (Remington
Warren Telechron
Dubois
Kennedy Clock Co
Rempe Manufacturing Compa
Warwick Time Stamp Co
Duboulet(2)
Keyless Clock Company
Rex Mundi
Waterbury Clock Company
Dudley Railway Clock
Kienzle
RFT, Elfema
Wempe, C.Plath
Dyna
Knoblich
Richard and Leutz
West End Watch Co
E. G. L(1)
Kohler, Karl
Richez, Charles
Westerstrand
E.N.E.M
Korfhage and Sohne
Riefler
Wise, S.J
Ebauches, Oscilloquartz
Koseisha
Rigel
Zacharia
Eco Magneto
Krause
Ritchie, James and Sons
Zenith - Jamin
École d'Horlogerie de (1)
Kuhne, E
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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