GB1347024A - Centre seconds hand timepiece - Google Patents

Centre seconds hand timepiece

Info

Publication number
GB1347024A
GB1347024A GB1020271*[A GB1020271A GB1347024A GB 1347024 A GB1347024 A GB 1347024A GB 1020271 A GB1020271 A GB 1020271A GB 1347024 A GB1347024 A GB 1347024A
Authority
GB
United Kingdom
Prior art keywords
hand
cam
seconds
seconds hand
minutes
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
GB1020271*[A
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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 JP3297570A external-priority patent/JPS4936630B1/ja
Priority claimed from JP5502470U external-priority patent/JPS4935833Y1/ja
Priority claimed from JP5560270U external-priority patent/JPS4935834Y1/ja
Application filed by Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Publication of GB1347024A publication Critical patent/GB1347024A/en
Expired legal-status Critical Current

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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/005—Mechanical devices for setting the time indicating means stepwise or on determined values
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0804—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0804—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms
    • G04F7/0809—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms with single hammers, i.e. one hammer acts on each counter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

1347024 Clocks and watches CITIZEN WATCH CO Ltd 20 April 1971 [20 April 1970 4 June 1970 5 June 1970] 10202/71 Heading G3T To permit precise setting of seconds and minutes hands at the instant of a time signal, a centre seconds hand timepiece is provided with a heart cam 233 on the seconds hand arbor 224 and an orbicular cam 215 operatively connected to the minutes hand arbor. Depression of a push button or stem 203 at the instant of the signal sets the seconds hand to zero or twelve o'clock but only similarly sets the minutes hand if the latter is within a small range of this position so that a projection 201c on a lever 201 may enter cam slot 215a. If the minutes hand is outside the range, it is not set since the projection 201c bears against the plain periphery 215b of the cam. Setting of the seconds hand is, however, permitted by slip occurring between lever surface 201d and a pin 206 fixed to seconds hand reset lever 204. This latter mechanism may be replaced by a tilting pin arrangement Figs. 2 and 3A, B (not shown). Various embodiments are described; the orbicular cam may have several notches and be reset by a sliding member (508) Figs. 10A-C (not shown). Both cams may be actuated by a single lever (301) Figs. 7A-D (not shown). The timepiece may be driven by an electromagnetically maintained balance (403) Figs. 8, 9 (not shown) cooperating with a fixed sensing and drive coil assembly (430). In this case, the setting mechanism is arranged to stop the balance other than in its neutral position and to hold the sixth wheel (421) of the train to prevent transmission of stress to the impulse pin on the balance.
GB1020271*[A 1970-04-20 1971-04-20 Centre seconds hand timepiece Expired GB1347024A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP3297570A JPS4936630B1 (en) 1970-04-20 1970-04-20
JP5502470U JPS4935833Y1 (en) 1970-06-04 1970-06-04
JP5560270U JPS4935834Y1 (en) 1970-06-05 1970-06-05

Publications (1)

Publication Number Publication Date
GB1347024A true GB1347024A (en) 1974-02-13

Family

ID=27287920

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1020271*[A Expired GB1347024A (en) 1970-04-20 1971-04-20 Centre seconds hand timepiece

Country Status (5)

Country Link
US (1) US3667212A (en)
CH (2) CH566043A (en)
DE (1) DE2120170A1 (en)
FR (1) FR2086198B1 (en)
GB (1) GB1347024A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3039145A1 (en) * 1980-10-16 1982-05-13 Revue Thommen AG, 4437 Waldenburg Clock with oscillator controlled motor - has at least one stoppable hand, connected to motor via coupling whose actuator cooperates with reset mechanism
FR2771192B1 (en) * 1997-11-14 2000-01-21 Girard Perregaux Sa QUICK CORRECTION WATCH BY PUSH BUTTON
ATE530958T1 (en) * 2006-03-28 2011-11-15 Chopard Manufacture Sa RESETTING THE SECOND HAND IN A CLOCK
EP2221678A1 (en) * 2009-02-24 2010-08-25 Montres Breguet SA Device for blocking a resonator of a timepiece
EP4290316A1 (en) * 2022-06-09 2023-12-13 Manufacture d'Horlogerie Audemars Piguet SA Control device for timepiece movement, corresponding timepiece movement and timepiece

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US455026A (en) * 1891-06-30 Paul sandoz-barbier
CH5613A (en) * 1892-09-09 1893-04-15 Meylan & Rochat Advanced chronograph mechanism-hours, minutes and seconds counter with immobilizer
US843887A (en) * 1906-02-19 1907-02-12 Adolph Gerson Stop-watch.
CH188369A (en) * 1936-02-11 1936-12-31 Ltd Leonidas Watch Factory Roskopf sports counter.
US2679135A (en) * 1951-09-19 1954-05-25 Wilhelm J Hanhart Chronograph

Also Published As

Publication number Publication date
CH566043A (en) 1975-08-29
DE2120170A1 (en) 1971-11-04
US3667212A (en) 1972-06-06
FR2086198B1 (en) 1974-08-19
FR2086198A1 (en) 1971-12-31
CH570571A4 (en) 1975-02-14

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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