GB1390457A - Crystal-controlled digital clock - Google Patents

Crystal-controlled digital clock

Info

Publication number
GB1390457A
GB1390457A GB1241372A GB1241372A GB1390457A GB 1390457 A GB1390457 A GB 1390457A GB 1241372 A GB1241372 A GB 1241372A GB 1241372 A GB1241372 A GB 1241372A GB 1390457 A GB1390457 A GB 1390457A
Authority
GB
United Kingdom
Prior art keywords
drum
drums
fixed
march
spindle
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
GB1241372A
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.)
Kieninger and Obergfell GmbH and Co
Original Assignee
Kieninger and Obergfell GmbH and Co
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
Priority claimed from DE19712112691 external-priority patent/DE2112691A1/en
Priority claimed from DE19722210700 external-priority patent/DE2210700A1/en
Application filed by Kieninger and Obergfell GmbH and Co filed Critical Kieninger and Obergfell GmbH and Co
Publication of GB1390457A publication Critical patent/GB1390457A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C17/00—Indicating the time optically by electric means
    • G04C17/0075—Indicating the time optically by electric means by drums or drum-like devices
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
    • G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Discharge By Other Means (AREA)

Abstract

1390457 Transferring mechanisms KIEINGER & OBERGFELL 16 March 1972 [16 March 1971 6 March 1972] 12413/72 Heading G4D [Also in Division G3] In a digital clock having units and tens of minutes drums 4, 5 and an hours drum 6, the drum 5 is smaller than the others and arranged eccentrically thereof so that projections 131, 110 on the drums 4, 5 can engage successive ones of abutments 130, 109 on the drums 5, 6 respectively to advance the latter drums by one unit at the appropriate times. The drum 6 is supported on a fixed spindle 7 and latched thereto by a star wheel 101 fixed to the spindle and a spring-loaded pawl 103 fixed to the drum. The other drums have similar mechanisms (not shown). The drum 6 rotates once in twentyfour hours and carries eight auxiliary drums 8-10 which are three-sided and are rotated around their own axes by engagement with a fixed cam ring 11. The spindle 19 of the drum 4 is rotated intermittently via a Geneva mechanism or a partially toothed gear to advance the minutes indication.
GB1241372A 1971-03-16 1972-03-16 Crystal-controlled digital clock Expired GB1390457A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19712112691 DE2112691A1 (en) 1971-03-16 1971-03-16 Quartz watch with digital display
DE19722210700 DE2210700A1 (en) 1972-03-06 1972-03-06 QUARTZ WATCH WITH DIGITAL DISPLAY

Publications (1)

Publication Number Publication Date
GB1390457A true GB1390457A (en) 1975-04-16

Family

ID=25760808

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1241372A Expired GB1390457A (en) 1971-03-16 1972-03-16 Crystal-controlled digital clock

Country Status (4)

Country Link
US (1) US3823546A (en)
CH (2) CH556569A (en)
FR (1) FR2130335B1 (en)
GB (1) GB1390457A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2415291C3 (en) * 1974-03-29 1979-06-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Circuit arrangement for a quartz-controlled electric clock
CH614831B (en) * 1974-05-08 Sharp Kk TOUCH-RESPONDING SWITCHING DEVICE FOR ELECTRONIC WRISTWATCHES.
US4176517A (en) * 1974-09-30 1979-12-04 Citizen Watch Co. Ltd. Integrated circuit for timepiece
US3959744A (en) * 1975-02-26 1976-05-25 Time Computer, Inc. CMOS oscillator having bias circuit outside oscillator feedback loop
JPS5232374A (en) * 1975-09-08 1977-03-11 Citizen Watch Co Ltd Electronic watch
DE8805055U1 (en) * 1988-04-16 1988-06-09 Hengstler GmbH, 78554 Aldingen Operating hour counter
US5581520A (en) * 1994-01-18 1996-12-03 Electrodynamics, Inc. Watch driven elapsed time indicator apparatus and its method of manufacture and use
US9622384B2 (en) * 2011-11-22 2017-04-11 Quantum Fuel Systems Llc Fishtail packaging and cooling

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3328954A (en) * 1965-04-22 1967-07-04 Mendell E Miller Electronic digital readout time indicating device
FR1517115A (en) * 1966-02-10 1968-03-15 Suisse Horlogerie Electronic watch
US3603073A (en) * 1969-03-26 1971-09-07 Tokai Rika Co Ltd Electric timepiece
US3590571A (en) * 1970-02-02 1971-07-06 Bunker Ramo Digital clock seconds indicator

Also Published As

Publication number Publication date
CH384072A4 (en) 1974-05-15
FR2130335A1 (en) 1972-11-03
US3823546A (en) 1974-07-16
FR2130335B1 (en) 1976-10-29
CH556569A (en) 1974-11-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees