NL96520C - Apparatus with an electromagnetically driven part carrying a wobble or rotational vibration. - Google Patents

Apparatus with an electromagnetically driven part carrying a wobble or rotational vibration.

Info

Publication number
NL96520C
NL96520C NL190893A NL190893A NL96520C NL 96520 C NL96520 C NL 96520C NL 190893 A NL190893 A NL 190893A NL 190893 A NL190893 A NL 190893A NL 96520 C NL96520 C NL 96520C
Authority
NL
Netherlands
Prior art keywords
wobble
driven part
electromagnetically driven
rotational vibration
part carrying
Prior art date
Application number
NL190893A
Other languages
Dutch (nl)
Original Assignee
Hatot Leon Ets
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hatot Leon Ets filed Critical Hatot Leon Ets
Application granted granted Critical
Publication of NL96520C publication Critical patent/NL96520C/en

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/02—Devices allowing the motion of a rotatable part in only one direction
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/02—Devices allowing the motion of a rotatable part in only one direction
    • G04B11/04—Pawl constructions therefor, e.g. pawl secured to an oscillating member actuating a ratchet
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C15/00—Clocks driven by synchronous motors
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/02—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a pendulum
    • G04C3/027—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a pendulum using electromagnetic coupling between electric power source and pendulum
    • G04C3/0276—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a pendulum using electromagnetic coupling between electric power source and pendulum the pendulum controlling indirectly, i.e. without mechanical connection, contacts, e.g. by magnetic or optic means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/02—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a pendulum
    • G04C3/027—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a pendulum using electromagnetic coupling between electric power source and pendulum
    • G04C3/0278—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a pendulum using electromagnetic coupling between electric power source and pendulum the pendulum controlling the gear-train by means of static switches, e.g. transistor circuits
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
    • G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
    • G04C3/064—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling indirectly, i.e. without mechanical connection, contacts, e.g. by magnetic or optic means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
    • G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
    • G04C3/065—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
    • G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
    • G04C3/065—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
    • G04C3/066—Constructional details, e.g. disposition of coils
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C5/00—Electric or magnetic means for converting oscillatory to rotary motion in time-pieces, i.e. electric or magnetic escapements
    • G04C5/005—Magnetic or electromagnetic means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetic Treatment Devices (AREA)
  • Control Of Stepping Motors (AREA)
NL190893A 1953-09-17 1954-09-17 Apparatus with an electromagnetically driven part carrying a wobble or rotational vibration. NL96520C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR654809A FR1090564A (en) 1953-09-17 1953-09-17 Improvements to time mechanisms and similar devices

Publications (1)

Publication Number Publication Date
NL96520C true NL96520C (en) 1961-01-16

Family

ID=8698348

Family Applications (3)

Application Number Title Priority Date Filing Date
NL190893A NL96520C (en) 1953-09-17 1954-09-17 Apparatus with an electromagnetically driven part carrying a wobble or rotational vibration.
NL255580A NL113502C (en) 1953-09-17 1960-09-05 Distress regulator
NL255581D NL255581A (en) 1953-09-17 1960-09-05

Family Applications After (2)

Application Number Title Priority Date Filing Date
NL255580A NL113502C (en) 1953-09-17 1960-09-05 Distress regulator
NL255581D NL255581A (en) 1953-09-17 1960-09-05

Country Status (4)

Country Link
US (1) US3168690A (en)
CH (1) CH321957A (en)
FR (1) FR1090564A (en)
NL (3) NL96520C (en)

Families Citing this family (125)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075207B (en) * 1960-02-11 Oskar Vierimg, Elektrotechnische Fabrik, Ebermannstadt Brushless ^ DC motor
DE1069084B (en) *
CA577869A (en) * 1953-06-19 1959-06-16 Bulova Watch Company Inc. Electric timepiece
DE1105804B (en) * 1953-09-17 1961-04-27 Hatot Leon Ets Balance-gear folder for contactless electrical clocks controlled by means of transistor feedback circuit
US2961587A (en) * 1954-01-16 1960-11-22 Omega Brandt & Freres Sa Louis Timepiece
US2895095A (en) * 1954-11-01 1959-07-14 Gen Motors Corp Electronic d.c. motor
US2852725A (en) * 1954-11-05 1958-09-16 Clifford Cecil Frank Electrically-maintained vibratory oscillator
US2909732A (en) * 1954-11-06 1959-10-20 Philips Corp Device for maintaining mechanical oscillations
US2843742A (en) * 1954-11-06 1958-07-15 Philips Corp Device for maintaining mechanical oscillations
DE1032788B (en) * 1954-11-25 1958-06-26 Philips Nv Transistor amplifier with operating point stabilization
DE1156027B (en) * 1955-01-21 1963-10-17 Henri Louis Etienne Pommeret Electrically controlled aisle folder oscillator for time-keeping devices, especially electrical clocks
IT550130A (en) * 1955-03-11
DE1140148B (en) * 1955-03-16 1962-11-22 Junghans Geb Ag Tooth lock for clockworks
US2942205A (en) * 1955-03-31 1960-06-21 Clarence H Mcshan Electromechanical transducer apparatus and systems embodying the same
US2950447A (en) * 1955-03-31 1960-08-23 Clarence H Mcshan Electromechanical transducer apparatus and systems embodying the same
DE1105045B (en) * 1955-04-21 1961-04-20 Siemens Ag Device for controlling the speed of a two or more phase rotating field motor
DE1230365B (en) * 1955-04-26 1966-12-08 Omega Brandt & Freres Sa Louis Electric clock
US2962643A (en) * 1955-04-26 1960-11-29 Omega Brandt & Freres Sa Louis Time-piece
DE1109254B (en) * 1955-05-06 1961-06-22 Westinghouse Electric Corp Arrangement for controlling or regulating the speed of a direct current shunt motor
IT552682A (en) * 1955-05-12
DE1214772B (en) * 1955-05-13 1966-04-21 Siemens Ag Device for commutation of armature currents in direct current machines
DE1060327B (en) * 1955-05-25 1959-06-25 Gen Electric Clock drive with an electronic vibration generator
US3215917A (en) * 1955-06-02 1965-11-02 Buck Instr Co Electrically driven timing device
DE966290C (en) * 1955-06-19 1957-07-18 Durowe Deutsche Uhren Rohwerke Contactless controlled vibration system
DE1113668B (en) * 1955-07-27 1961-09-07 Hatot Leon Ets Circuit arrangement for electrical maintenance of the vibrations of a vibrator
DE1054026B (en) * 1955-07-27 1959-03-26 Etablissements Leon Hatot Soc Electric balance clock
DE1099949B (en) * 1955-07-30 1961-02-16 Dr Phil Habil Oskar Vierling Mechanical oscillator with contact-free control serving as a gear folder of a time-keeping device
CH332902A (en) * 1955-09-24 1958-09-30 Omega Brandt & Freres Sa Louis Electric timepiece
DE1145364B (en) * 1955-10-20 1963-03-14 Gasaccumulator Svenska Ab Drive device for gyro rotors
DE1108312B (en) * 1955-12-06 1961-06-08 Oskar Vierling Elektrotechnisc Contactless direct current drive
DE1099628B (en) * 1955-12-15 1961-02-16 An Des Etablissements Leon Hat Circuit arrangement for a brushless electric motor fed from a direct current source
US2988868A (en) * 1955-12-15 1961-06-20 Leon Hatot Ets Electronic time-measuring arrangement
US2974265A (en) * 1955-12-24 1961-03-07 Kieninger & Obergfell Electric clock
DE1266235B (en) * 1955-12-24 1968-04-11 Kieninger & Obergfell Electronically controlled clock
US3014168A (en) * 1955-12-28 1961-12-19 Kieninger & Obergfell Electronically controlled clock
DE1166349B (en) * 1956-01-14 1964-03-26 Kieninger & Obergfell Electric machine
US3015054A (en) * 1956-01-14 1961-12-26 Kieninger & Obergfell Electronically controlled motor
DE1055454B (en) * 1956-01-23 1959-04-16 Oskar Vierling Elektrotechnisc Contactless vibration system driven by transistors
DE1045917B (en) * 1956-04-03 1958-12-04 Kieninger & Obergfell Self-winding electric watch powered by a direct current source
DE1117054B (en) * 1956-04-14 1961-11-09 Kieninger & Obergfell Time-keeping electrical devices, in particular electrical clocks
DE1092390B (en) * 1956-04-27 1960-11-03 Hatot Leon Ets Clock with electromotive spring winding
DE1108313B (en) * 1956-06-21 1961-06-08 Kieninger & Obergfell Electric DC motor or oscillator, especially for clocks
DE1280757B (en) * 1956-07-02 1968-10-17 Kieninger & Obergfell Electronically controlled clock
DE1061699B (en) * 1956-07-03 1959-07-16 Kieninger & Obergfell Electric clock
DE1157158B (en) * 1956-07-26 1963-11-07 Hatot Leon Ets Gear folder with permanent magnets for timing devices, which interacts with an electronic circuit
DE1226045B (en) * 1956-08-04 1966-09-29 Kieninger & Obergfell By an electronic circuit contactless self-controlled mechanical vibration system for time-keeping devices
US2940027A (en) * 1956-08-07 1960-06-07 Texas Instruments Inc Transistor oscillator circuit
DE1119398B (en) * 1956-08-11 1961-12-14 Max Braun Fa Circuit for direct and alternating current operation of oscillating armature motors
DE1157157B (en) * 1957-01-04 1963-11-07 Kieninger & Obergfell Small electrical device fed by a primary element, in particular an electrical balance clock
US3005305A (en) * 1957-01-04 1961-10-24 Kieninger & Obergfell Electric watch
DE1165501C2 (en) * 1957-01-25 1974-03-28 TIME-KEEPING ELECTRIC DEVICE, IN PARTICULAR ELECTRIC CLOCK, WITH A GANGDER SWINGER
DE1179873B (en) * 1957-01-25 1964-10-15 Hatot Leon Ets Time-keeping electrical device
US2877399A (en) * 1957-02-12 1959-03-10 John M Shaull Timing device
DE1291690B (en) * 1957-02-12 1969-03-27 Kieninger & Obergfell Kg Electronic oscillator as drive and / or regulator for clocks and other frequency-holding devices
DE1052318B (en) * 1957-02-15 1959-03-05 Kieninger & Obergfell Clock, in particular electric rotary pendulum clock
DE1076579B (en) * 1957-03-09 1960-02-25 Ebauches Sa Clock with electrodynamically operated swinging escapement
DE1261802B (en) * 1957-04-09 1968-02-22 Ebauches Sa Electric balance clock
US3040225A (en) * 1957-04-10 1962-06-19 Jahresuhren Fabrik G M B H Impelling and pulse control system for electronic pendulum clocks
DE1052319B (en) * 1957-04-11 1959-03-05 Kieninger & Obergfell Drive device for mechanical oscillators
DE1136778B (en) * 1957-04-11 1962-09-20 Kieninger & Obergfell Electromagnetic drive and / or gear regulator arrangement, preferably for clocks, fed by changing direct voltage sources
DE1096475B (en) * 1957-04-12 1961-01-05 Bosch Gmbh Robert Electromagnetic drive device for fuel pumps of internal combustion engines
DE1040970B (en) * 1957-04-16 1958-10-09 Uhren Rohwerke L Hummel & Co D Contactless controlled vibration system
DE1178015B (en) * 1957-06-07 1964-09-10 Reich Robert W Circuit arrangement for electronically operated clocks
DE1149668B (en) * 1957-06-08 1963-05-30 Movado Montres Electromagnetic device for driving a clock
US2957116A (en) * 1957-06-14 1960-10-18 Hurd Lock & Mfg Company Mechano-electric clocks
DE1280159B (en) * 1957-07-01 1968-10-10 Kieninger & Obergfell Electronically controlled clock
DE1232077B (en) * 1957-07-01 1967-01-05 Kieninger & Obergfell Rate control device for the drive of electrical clocks, time standards and. like
DE1207885B (en) * 1957-07-11 1965-12-23 Siemens Ag Electronic clock drive
DE1154404B (en) * 1957-07-11 1963-09-12 Siemens Ag Electronic clock drive
DE1207886B (en) * 1957-07-11 1965-12-23 Siemens Ag Electronic clock drive
IT592599A (en) * 1957-07-11
DE1078507B (en) * 1957-09-26 1960-03-24 Siemens Ag Isochronous pendulum
DE1119399B (en) * 1957-10-08 1961-12-14 Reich Robert W Transistor controlled oscillating armature motor for driving razors
DE1208699B (en) * 1957-10-25 1966-01-05 Junghans Geb Ag Method for compensating the temperature dependence of the rate of a clock operated contactlessly with transistor circuit and clock suitable for carrying out the method
DE1178796B (en) * 1957-12-16 1964-09-24 Junghans Geb Ag Time-keeping electrical device, in particular an electrical clock
DE1175160B (en) * 1958-01-08 1964-07-30 Smith & Sons Ltd S Timing device
DE1087528B (en) * 1958-01-10 1960-08-18 Reich Robert W Time-keeping electrical device, in particular an electrical clock
DE1171345B (en) * 1958-04-16 1964-05-27 Kieninger & Obergfell Battery-powered synchronous clock
DE1149447B (en) * 1958-05-02 1963-05-30 Horstmann Magnetics Ltd Electric motor with a mechanical vibration system for speed control
US3002138A (en) * 1958-06-24 1961-09-26 Gen Time Corp Electrically powered oscillatory balance
US3002139A (en) * 1958-07-02 1961-09-26 Gen Time Corp Electrically powered balance mechanism
DE1218363B (en) * 1958-07-14 1966-06-02 Kieninger & Obergfell Mechanical oscillating system, especially a pendulum or balance wheel for driving clocks and other time-keeping devices
DE1152062B (en) * 1958-08-08 1963-07-25 Siemens Ag Electric clock drive
DE1205465B (en) * 1958-10-18 1965-11-18 Junghans Geb Ag Electrodynamically driven arrangement, in particular gear folder arrangement for clock or motor arrangement
DE1178795B (en) * 1958-10-18 1964-09-24 Junghans Geb Ag Electrodynamically driven arrangement, especially gear regulator arrangement for clocks or motor arrangements
DE1616496B1 (en) * 1958-12-01 1971-09-30 Hatot Leon Ets Electrical alarm device, preferably for electrically operated alarm clocks
DE1158453B (en) * 1958-12-17 1963-11-28 Junghans Geb Ag Contactless controlled gear folder arrangement for time-keeping electrical devices, especially electrical clocks
DE1165502B (en) * 1958-12-30 1964-03-12 Hatot Leon Ets Drive for clockworks with automatic electric motor winding
DE1207483B (en) * 1959-02-05 1965-12-23 Kieninger & Obergfell Electric motor for small devices, especially for clocks and other time-keeping devices
US3136935A (en) * 1959-03-18 1964-06-09 Jimmie S Hogan Commutatorless d. c. motor
US3117265A (en) * 1959-07-11 1964-01-07 Movado Montres Electromagnetic system for the maintenance of the movement of a movable member
DE1263158B (en) * 1959-09-30 1968-03-14 Movado Montres Electric motor with a magnetized rotor and contactless controlled excitation of the stator winding
DE1120384B (en) * 1959-11-13 1961-12-21 Heliowatt Werke Elek Zitaets A Movement, especially for a time switch, with a magnetic escapement
DE1204147B (en) * 1959-12-15 1965-10-28 Junghans Geb Ag Contactless drive device for the gear folder of an electric clock
US3163787A (en) * 1959-12-15 1964-12-29 Glaser Gunther Driving mechanism for the movement regulator of an electric clock
DE1221990B (en) * 1959-12-28 1966-07-28 Zenith Montres Electronic time-keeping device with a non-contact controlled balance wheel in normal operation via a transistor circuit
DE1266236B (en) * 1960-03-15 1968-04-11 Siemens Ag Arrangement for driving mechanical vibration systems
DE1222439B (en) * 1960-04-20 1966-08-04 Longines Montres Comp D Electric clock
DE1219410B (en) * 1960-07-28 1966-06-16 United States Time Corp Locking device for magnetically locking a toothed, magnetizable ratchet wheel
DE1204311B (en) * 1960-08-09 1965-11-04 Licentia Gmbh Electric motor supplied from a direct current source without a mechanical commutator
US3184623A (en) * 1960-09-19 1965-05-18 Marti Frederic Miniature electric motor
DE1219581B (en) * 1960-12-06 1966-06-23 Aeg DC motor with a magnetically soft rotor with pronounced poles or with a permanent magnet rotor
DE1231176B (en) * 1961-06-01 1966-12-22 Horstmann Gear Co Ltd Rate control device for clockworks or the like.
DE1226496B (en) * 1961-09-09 1966-10-06 Junghans Ges Mit Beschraenkter Electromagnetically driven vibrator or motor assembly
DE1238856B (en) * 1962-03-28 1967-04-13 United States Time Corp Time-keeping device, especially an electric clock
DE1229463B (en) * 1962-04-17 1966-11-24 Kienzle Uhrenfabriken Ges Mit Electronic clock
DE1211706B (en) * 1962-08-09 1966-03-03 Max Planck Gesellschaft Electric pulse generator
DE1277762B (en) * 1962-08-22 1968-09-12 Ebauches Sa Drive balance for electric clocks
US3167906A (en) * 1962-08-31 1965-02-02 Kokusai Electric Co Ltd Timekeeper corrected by electric time signals
DE1221154B (en) * 1962-09-05 1966-07-14 Kienzle Uhrenfabriken Ges Mit Clock with lute mechanism
DE1231174B (en) * 1962-09-10 1966-12-22 Licentia Gmbh Clock with direct current drive and transistor control
DE1244284B (en) * 1962-10-19 1967-07-13 Licentia Gmbh Speed control circuit for direct current motors fed by transistors
DE1244665B (en) * 1962-11-03 1967-07-13 United States Time Corp Pointer mechanism drive
DE1246595B (en) * 1963-01-07 1967-08-03 Reich Robert W Magnet arrangement for electric and electronic clocks
GB1104071A (en) * 1963-10-17 1968-02-21 Smiths Industries Ltd Improvements in or relating to horological instruments
US3292064A (en) * 1964-03-16 1966-12-13 Gen Electric Frequency regulated chronometer
CH429601A (en) * 1964-05-15 1966-10-15 Suisse Horlogerie Gear train of a timepiece
DE1261242C2 (en) * 1964-06-05 1975-10-02 Fa. Diehl, 8500 Nürnberg HAND DRIVE FOR A BATTERY-FEED, SELF-CHANGING CLOCK WITH A COMMUTATORLESS MOTOR
DE1523934A1 (en) * 1965-06-08 1970-03-26 Junghans Gmbh Geb Tuning fork kept vibrating by electromagnetic means
FR1505391A (en) * 1966-06-28 1967-12-15 Hatot Leon Ets Improvements to bending vibrators and electromechanical oscillators incorporating such vibrators
US3762154A (en) * 1971-12-23 1973-10-02 Gen Electric Simulate pendulum clock
US3762155A (en) * 1971-12-23 1973-10-02 Gen Electric Simulated pendulum clock
JPS6093982U (en) * 1983-12-01 1985-06-26 富士計器株式会社 total swing clock
EP3264199A1 (en) * 2016-07-01 2018-01-03 Montres Breguet S.A. Timepiece comprising a switching device of a clockwork mechanism
EP3264198B1 (en) * 2016-07-01 2020-01-15 Montres Breguet S.A. Timepiece comprising a device for switching a mechanism of said timepiece

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB601712A (en) * 1945-02-26 1948-05-11 Hillyard Thomas Stott Improvements relating to apparatus for time measurement
FR375188A (en) * 1907-03-01 1907-07-02 Charles Fery Free electric pendulum without escapement or cogs
US1560056A (en) * 1923-05-01 1925-11-03 Western Electric Co Source of waves of constant frequency
US2472249A (en) * 1945-09-08 1949-06-07 Liquidometer Corp Liquid level measuring device with oscillator
US2640978A (en) * 1949-10-22 1953-06-02 Claesson Per Harry Elias Capacity actuated burglar alarm
BE505739A (en) * 1950-09-12
US2680160A (en) * 1951-09-15 1954-06-01 Bell Telephone Labor Inc Bias circuit for transistor amplifiers
US2719944A (en) * 1954-06-10 1955-10-04 Harrison D Brailsford Commutatorless direct current motor
US2769946A (en) * 1955-02-16 1956-11-06 Harrison D Brailsford Oscillating commutatorless direct current motor

Also Published As

Publication number Publication date
NL255581A (en) 1966-08-15
US3168690A (en) 1965-02-02
NL113502C (en) 1967-01-16
FR1090564A (en) 1955-03-31
CH321957A (en) 1957-05-31

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