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Electric Clock Makers - Index
00 Amateur clocks
Ecole d'Horlogerie Geneva
Kuhne, E
Ritchie, James and Sons
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
S.I.R.S Ltd
AFO Apparatenfabriek
Electro Clock Company
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
Fischer Elec Clock Co NY
MEC
Seth Thomas Clock Co
Bäuerle
Fred Frick Clock Co
Mehne
Shepherd
Baume & Mercier
Fuldensia
Meisei
Shortt Synchronome fre(1)
Bentima
Gensign
Mercer and Mercer Octo
Siemens & Halske
Bentley
Gent
Meridian Regulator Ball a
Silent Electric
Benzing
Gilette Electric Clock Co
MF Manufacture Francaise
Silentia
Berger
Gillett & Johnston
Mildé
Smiths
Birch and Gaydon
Girard-Perregaux
Miller Program Clock Co
Sohm Electric Clock Compa
Bizerba Chronostat
Girod, ODO
Mirax
Solari
Blodgett Bros. & Clock Co
Gisholt Manufacturing Co
Möller, Max
South Bend Watch Co
Bodet
Glashütte (GUB)
Monarch Telephone Co
Speaking Clocks
Bohmeyer
Godineau
Montre Royale
Staiger Chronometron Chro
Borrel
Golay
Moser Baer
Standard Electric Cloc(1)
Brillié and Vigreux-Brill
GPO (British General Post
Murday
Standard Electric Time(1)
Bulle
Grav- Elec Clock Company
National Electric
Standard Time Company UK
Bulova
Great Northern Telegraph
National Magnetic Corp
Steenhans Time-Tronic qua
Bürk (Württembergische Uh
Gübelin
National Self-Winding Co
Sterling
Burrell, AG and Co
Haddon Products Inc
New England Electric Cloc
Steuart, Alexander
Campa
Hahl Pneumatic
New Era or Electric Self
Stromberg Electric Manufa
Campiche
Hamilton
New Haven Clock Company
Stubner, Paul
Capt
Hammond Clock Company
New York Standard Watch C
Sunrise
Carl Gullberg
Hansen Manufacturing Co
No-Key Clock
Supremo
Carley
Harington and Sons
Normalzeit
Svenska Elektriska Urf(1)
Cartier
Hermle
Nufa Holland
Swissonic
Cauderay
Herschede Electric Clock
O B McClintock-Loomis Co
Synchron
Certina
Herz & Sohn
Observer marine style clo
Synchronome
Charvet - Delorme
Hesar
O'Keenan
Synchronome Australia
Château Frères - Collin
Hettich
Olin
Synchronos electric kit c
Chelsea Clock Co(1)
Hipp
Omega
SynClock
Chronometron and Chrometr
Hoffmann
OREL
T and N, Elektrozeit, D.E
Cincinnatti Time Recorder
Holden - LR - Exact - Reg
Paauwe
Telavox and Clementa
Citizen
Hopkins, Munroe earth dri
Pacific Electric Clock Co
Telephone Rentals
Clairetta
Houdin Robert
Palmer C. F. Pyke
Themis
Clementa - see telavox fo
Hour Lavigne
Patek Philippe
Thrasher Electric Clocks
Cluses (Ecole de Cluses)
Howard
Paul Garnier
Thwaites & Reed Ltd
Collin and Wagner
Howard, E Clock Co
Pega - W. Zeh
Tiffany , Cloister, Ni(1)
Copal
Huc, Pablo
Perivale clock company
Time Telegraph
Cornelius Knudsen
IBM - ITR - National
Perpetua
TMC and TEMCo
Cotna
IBM America
Perret, David
Trinity Clock & Americ(1)
Coventry Electric Cloc(1)
Imhof
Peweta (Germany)
TSC Tokyo Sokki Co. Ltd
Craig capt. E.E
Imperial Clock Co
Peyer Favarger
Uhrenfabrik Mühlheim
Crown by Herschede
Inducta - Landis & Gyr
Philips
Ulysse Nardin
CWC Cabot Watch and Clock
Ingrams and Ingram Brothe
Polaris and Yantai Chiji
Ungerer
Cyma
Instanta
Poole - Barr
United Clock Corporation
Dallett
International
Popp pneumatic
Urgos
Dansk Normaltid
International Time Record
Pragotron
US Electric Clock Co. NY
Darche Electric Clock Co
Isgus
Precisa
Vacotti-Rosi
d'Arsonval chronoscope
ITF
Prentiss Clock Improvemen
Van Slyke Self Winding Ti
de Jong, F.C
ITR
Princeps
van Vark
Dehomag
Jaeger Lecoultre
Prouds
Vandeplancke -Tordoir
Dent
Jamin Zenith
Prud'Homme
Vaucanson
Derby
Jansen, F.W. Clock Co
Puja (Jundes)
Vedette and Electro-Vedet
Detouche
Jaz and Carat
Rabe - Hanau
Venner
Diehl
Jean Lassale
Radio Electric Clock Corp
Vitascope
Dimep-Alto-Tagus
Jeco
Radiochron Rada-Chron
VoumardQuartz
Dixi
Jefferson Electric Co
Rapco
Wadsworth
Documents General
Jones, H.E. (Synchronome)
Reclus
Wagner
DOLD V.C(1)
Jundes
Recta - Clerc (EC)
Wallace & Tiernan Product
Dori
Junghans
Reelfs
Waltham Electric Clock Co
Drawbaugh Electric Clock
Jura
Reform
Warren Clock Company
Droz A
Kappa
Reguladora
Warren Telechron
Dubois
Kelvin Hughes
RemindoClock
Warwick Time Stamp Co
Duboulet(2)
Kennedy Clock Co
Remington-Rand (Remington
Waterbury Clock Company
Dudley Railway Clock
Keyless Clock Company
Rempe Manufacturing Compa
Wempe, C.Plath
Dyna
Kienzle
Rex Mundi
West End Watch Co
E. G. L(1)
Knoblich
RFT, Elfema
Westerstrand
E.N.E.M
Kohler, Karl
Richard and Leutz
Wilhelm Muller & Co
Ebauches, Oscilloquartz
Korfhage and Sohne
Richez, Charles
Wise, S.J
Eco Magneto
Koseisha
Riefler
Zacharia
École d'Horlogerie de (1)
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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