Maker Index
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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
Elliott
Lenzkirch
Sangamo Electric Company
AFO Apparatenfabriek
Ergas
Lepaute
Satori
Alcy
Ericsson
Leroy et Cie
Sauer
American Clock Company
Estyma and related transi
Letorey pneumatic
Schatz
American Reminder Cloc(1)
Etalon
Loisel, A
Schauer
Angelus
Eureka
Longines
Schild S.A(1)
Ansonia 'Electric Wind'
Ever Ready and Scott
Looping
Schneider & Wesenfeld - K
Aron - Heliowatt
Everett Edgecumbe
Löwe Uhrenfabrik Mullheim
Schneider, F.W
Assa
Evershed
Lowne
Schneider, F.X
Assmann speaking clock
EXA
Lugrin
Schönberg and Elektrische
ATE quartz chronometer
Farad
Lux Manufacturing Company
Schweizer
Atlantic Clock Company
Favag
Magneta - English
Secticon, Portescap
Ato
Fedchenko
Magneta Swiss - Fischer
Seiko
Automatic Electric Clock
Ferat
Marchino
Self Winding Clock Co
Autophon
Ferramo - see Bäuerle
Marti
Semca clock
Bain
Féry (Garnier)
Matthew Norman
Sempire Clock Company Gre
Bangor Clock Co
Fischer Elec Clock Co NY
Mauthe - Dolektra
Sessions Clock Company
Bardon
Fred Frick Clock Co
MEC
Seth Thomas Clock Co
Barraud and Lund
Fuldensia
Mehne
Shepherd
Bäuerle
Gensign
Meisei
Shortt Synchronome fre(1)
Baume & Mercier
Gent
Mercer and Mercer Octo
Siemens & Halske
Bentley
Gilette Electric Clock Co
Meridian Regulator Ball a
Silent Electric
Benzing
Gillett & Johnston
MF Manufacture Francaise
Silentia
Berger
Girard-Perregaux
Mildé
Smiths
Birch and Gaydon
Girod, ODO
Miller Program Clock Co
Sohm Electric Clock Compa
Bizerba Chronostat
Gisholt Manufacturing Co
Mirax
Solari
Blodgett Bros. & Clock Co
Glashütte (GUB)
Möller, Max
South Bend Watch Co
Bodet
Godineau
Monarch Telephone Co
Speaking Clocks
Bohmeyer
Golay
Montre Royale
Staiger Chronometron Chro
Borrel
GPO (British General Post
Moser Baer
Standard Electric Cloc(1)
Brillié and Vigreux-Brill
Grav- Elec Clock Company
Murday
Standard Electric Time(1)
Bulle
Great Northern Telegraph
National Electric
Standard Time Company UK
Bulova
Gübelin
National Magnetic Corp
Steenhans Time-Tronic qua
Bürk (Württembergische Uh
Haddon Products Inc
National Self-Winding Co
Sterling
Burrell, AG and Co
Hahl Pneumatic
New England Electric Cloc
Steuart, Alexander
Campa
Hamilton
New Era or Electric Self
Stromberg Electric Manufa
Campiche
Hammond Clock Company
New Haven Clock Company
Stubner, Paul
Capt
Hansen Manufacturing Co
New York Standard Watch C
Sunrise
Carl Gullberg
Harington and Sons
No-Key Clock
Supremo
Carley
Hermle
Normalzeit
Svenska Elektriska Urf(1)
Cartier
Herschede Electric Clock
Nufa Holland
Swissonic
Cauderay
Herz & Sohn
O B McClintock-Loomis Co
Synchron
Certina
Hesar
Observer marine style clo
Synchronome
Charvet - Delorme
Hettich
O'Keenan
Synchronome Australia
Château Frères - Collin
Hipp
Olin
Synchronos electric kit c
Chelsea Clock Co(1)
Hoffmann
Omega
SynClock
Chronometron and Chrometr
Holden - LR - Exact - Reg
OREL
T and N, Elektrozeit, D.E
Cincinnatti Time Recorder
Hopkins, Munroe earth dri
Paauwe
Telavox and Clementa
Citizen
Houdin Robert
Pacific Electric Clock Co
Telephone Rentals
Clairetta
Hour Lavigne
Palmer C. F. Pyke
Themis
Clementa - see telavox fo
Howard
Patek Philippe
Thrasher Electric Clocks
Cluses (Ecole de Cluses)
Howard, E Clock Co
Paul Garnier
Thwaites & Reed Ltd
Collin and Wagner
Huc, Pablo
Pega - W. Zeh
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
ECS English Clock Systems
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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