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