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