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