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