GB601712A - Improvements relating to apparatus for time measurement - Google Patents

Improvements relating to apparatus for time measurement

Info

Publication number
GB601712A
GB601712A GB533246A GB533246A GB601712A GB 601712 A GB601712 A GB 601712A GB 533246 A GB533246 A GB 533246A GB 533246 A GB533246 A GB 533246A GB 601712 A GB601712 A GB 601712A
Authority
GB
United Kingdom
Prior art keywords
circuit
pendulum
coil
swings
vibrator
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB533246A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB601712A publication Critical patent/GB601712A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

601,712. Valve relay circuits. STOTT, H, T. Feb. 26, 1945, No. 5332/46. Divided out of 590,741. [Class 40 (vi)] [Also in Group XVIII] A time-keeping or time-measuring mechanism comprises a pendulum or other mechanical vibrator which bears a member moved in accordance with the swing of the vibrator to co-operate with a tuned oscillatory electric circuit so as to throw said circuit into or out of resonance, the resulting change in current in the circuit being utilized to count the swings of the vibrator. In the embodiment shown, Fig. 1, a pendulum 4 carries a condenser plate 5 which as the pendulum swings, moves over a fixed condenser plate 6 to throw an oscillatory electric circuit composed of electron discharge tube VI and rectifier tube V2 and associated inductances L1, L2, condensers C1, C2, C3, C4, resistance R1 into or out of resonance, thus changing the current in the circuit. The output from the tube V2 is passed through the winding of a relay L4 controlling contacts 9 which may be in the circuit of an electromagnet operating the clock hands or other counting indicator. In a modification (not shown), the tuning of the oscillatory circuit is varied by the pendulum moving a member of low electrical resistance into or out of the neighbourhood of a coil in the tuned circuit so as to vary the inductance of the coil owing to the eddy currents induced in the member. If desired', the pendulum could carry a member of magnetizable material which, as the pendulum swings, moves into or out of the field of a coil in the tuned circuit to vary the inductance of the coil The pendulum maintaining means may also be controlled by contacts 9 in known manner.
GB533246A 1945-02-26 Improvements relating to apparatus for time measurement Expired GB601712A (en)

Publications (1)

Publication Number Publication Date
GB601712A true GB601712A (en) 1948-05-11

Family

ID=1628278

Family Applications (1)

Application Number Title Priority Date Filing Date
GB533246A Expired GB601712A (en) 1945-02-26 Improvements relating to apparatus for time measurement

Country Status (1)

Country Link
GB (1) GB601712A (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966290C (en) * 1955-06-19 1957-07-18 Durowe Deutsche Uhren Rohwerke Contactless controlled vibration system
DE1039945B (en) * 1953-09-17 1958-09-25 Hatot Leon Ets Circuit arrangement for contactless electrical maintenance of the oscillation of a self-controlled rate regulator of an electric clock using an electronic feedback circuit
DE971059C (en) * 1953-06-19 1958-12-04 Bulova Watch Co Inc Electric clock
US2895095A (en) * 1954-11-01 1959-07-14 Gen Motors Corp Electronic d.c. motor
DE1073967B (en) * 1960-01-21 N V Philips Gloeilampenfabne ken Eindhoven (Niederlande) Arrangement for contactless electronic control of a time-keeping electrical device
DE1074506B (en) * 1960-01-28 Ebauches S A Neuchatcl (Schweiz) Vcrtr Dr Ing H Dabrmghaus Pat Anw Dusseldorf 1 Contactless drive and control system in the form of a time-keeping electrical device, in particular an electrical clock
DE1078678B (en) * 1953-09-17 1960-03-31 An Des Etablissements Leon Hat Circuit arrangement for brushless motors
DE1085825B (en) * 1955-04-26 1960-07-21 Omega Brandt & Freres Sa Louis Contactless gear folder of an electric timepiece controlled by electronic circuits
DE1087528B (en) * 1958-01-10 1960-08-18 Reich Robert W Time-keeping electrical device, in particular an electrical clock
US2961587A (en) * 1954-01-16 1960-11-22 Omega Brandt & Freres Sa Louis Timepiece
DE1117054B (en) * 1956-04-14 1961-11-09 Kieninger & Obergfell Time-keeping electrical devices, in particular electrical clocks
DE1154404B (en) * 1957-07-11 1963-09-12 Siemens Ag Electronic clock drive
DE1178015B (en) * 1957-06-07 1964-09-10 Reich Robert W Circuit arrangement for electronically operated clocks
US3168690A (en) * 1953-09-17 1965-02-02 Hatot Leon Ets Clock power-device
DE1203185B (en) * 1958-04-16 1965-10-14 Kieninger & Obergfell Electromechanical frequency generator for clocks and other time keeping devices
DE1211706B (en) * 1962-08-09 1966-03-03 Max Planck Gesellschaft Electric pulse generator
DE1230365B (en) * 1955-04-26 1966-12-08 Omega Brandt & Freres Sa Louis Electric clock
DE1266235B (en) * 1955-12-24 1968-04-11 Kieninger & Obergfell Electronically controlled clock
DE1171188B (en) * 1955-03-31 1974-07-04

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073967B (en) * 1960-01-21 N V Philips Gloeilampenfabne ken Eindhoven (Niederlande) Arrangement for contactless electronic control of a time-keeping electrical device
DE1074506B (en) * 1960-01-28 Ebauches S A Neuchatcl (Schweiz) Vcrtr Dr Ing H Dabrmghaus Pat Anw Dusseldorf 1 Contactless drive and control system in the form of a time-keeping electrical device, in particular an electrical clock
DE971059C (en) * 1953-06-19 1958-12-04 Bulova Watch Co Inc Electric clock
DE1078678B (en) * 1953-09-17 1960-03-31 An Des Etablissements Leon Hat Circuit arrangement for brushless motors
DE1039945B (en) * 1953-09-17 1958-09-25 Hatot Leon Ets Circuit arrangement for contactless electrical maintenance of the oscillation of a self-controlled rate regulator of an electric clock using an electronic feedback circuit
DE1043962B (en) * 1953-09-17 1958-11-13 Hatot Leon Ets Circuit arrangement for contactless electrical maintenance of torsional vibrations
US3168690A (en) * 1953-09-17 1965-02-02 Hatot Leon Ets Clock power-device
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
DE1171188C2 (en) * 1955-03-31 1974-07-04 DEVICE FOR CONVERTING ELECTRICAL ENERGY INTO MECHANICAL VIBRATION ENERGY
DE1171188B (en) * 1955-03-31 1974-07-04
DE1230365B (en) * 1955-04-26 1966-12-08 Omega Brandt & Freres Sa Louis Electric clock
DE1085825B (en) * 1955-04-26 1960-07-21 Omega Brandt & Freres Sa Louis Contactless gear folder of an electric timepiece controlled by electronic circuits
DE966290C (en) * 1955-06-19 1957-07-18 Durowe Deutsche Uhren Rohwerke Contactless controlled vibration system
DE1266235B (en) * 1955-12-24 1968-04-11 Kieninger & Obergfell Electronically controlled clock
DE1117054B (en) * 1956-04-14 1961-11-09 Kieninger & Obergfell Time-keeping electrical devices, in particular electrical clocks
DE1178015B (en) * 1957-06-07 1964-09-10 Reich Robert W Circuit arrangement for electronically operated clocks
DE1154404B (en) * 1957-07-11 1963-09-12 Siemens Ag Electronic clock drive
DE1087528B (en) * 1958-01-10 1960-08-18 Reich Robert W Time-keeping electrical device, in particular an electrical clock
DE1203185B (en) * 1958-04-16 1965-10-14 Kieninger & Obergfell Electromechanical frequency generator for clocks and other time keeping devices
DE1211706B (en) * 1962-08-09 1966-03-03 Max Planck Gesellschaft Electric pulse generator

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