GB1180366A - Stopwatch - Google Patents

Stopwatch

Info

Publication number
GB1180366A
GB1180366A GB31604/68A GB3160468A GB1180366A GB 1180366 A GB1180366 A GB 1180366A GB 31604/68 A GB31604/68 A GB 31604/68A GB 3160468 A GB3160468 A GB 3160468A GB 1180366 A GB1180366 A GB 1180366A
Authority
GB
United Kingdom
Prior art keywords
hammer
hands
base plate
pivotally mounted
returning
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
GB31604/68A
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Publication of GB1180366A publication Critical patent/GB1180366A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
    • G04D7/04—Measuring, counting, calibrating, testing or regulating apparatus for gearwork
    • 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
    • G04F7/0814—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms with double hammer, i.e. one hammer acts on two counters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Electromechanical Clocks (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

1,180,366. Stopwatches. DAINI SEIKOSHA K.K. July 2, 1968 [Aug. 21, 1967], No.31604/68. Heading G3T. In a stopwatch having a hammer 1 having surfaces 2, 3 co-operating with heart shaped cams 10, 12, respectively, for returning the minute and second hands to zero positions, the hammer 1 is pivotally mounted on a member 14 adjustably secured to a base plate (not shown) whereby the member 14 may be positioned to ensure that the surfaces 2, 3 move in the paths required for correctly returning the hands to their zero positions. The member 14 may be provided with pairs of diametrically arranged apertures, a selected pair of which receives pins 16, 16<SP>1</SP> projecting from the base plate. In another embodiment the member 14 is provided with two openings having formed in their peripheries recesses engageable by the pins 16, 16<SP>1</SP>; and in a further construction the member 14 is adjustably and pivotally mounted on a pin 16, and is secured in an adjusted position by a screw passing through a slot therein.
GB31604/68A 1967-08-21 1968-07-02 Stopwatch Expired GB1180366A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5330167 1967-08-21

Publications (1)

Publication Number Publication Date
GB1180366A true GB1180366A (en) 1970-02-04

Family

ID=12938886

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31604/68A Expired GB1180366A (en) 1967-08-21 1968-07-02 Stopwatch

Country Status (4)

Country Link
US (1) US3518826A (en)
DE (1) DE1773368C3 (en)
FR (1) FR1572002A (en)
GB (1) GB1180366A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701250A (en) * 1970-12-28 1972-10-31 Xerox Corp Adjustable return mechanism for a watch
GB1405101A (en) * 1971-08-20 1975-09-03 Smiths Industries Ltd Reset mechanisms for use in stopwatches
EP1791042A1 (en) * 2005-11-24 2007-05-30 Vaucher Manufacture Fleurier SA Hammer for a timepiece
CH698827B1 (en) * 2006-08-15 2009-11-13 Chopard Manufacture Sa Device reset for a timepiece.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH271999A (en) * 1948-04-21 1950-11-30 Vve James Aubert & Cie Chronograph.
CH279962A (en) * 1949-11-26 1951-12-31 D Horlogerie Minerva Sport S A Time counter.
CH285850A (en) * 1950-07-31 1952-09-30 Excelsior Park Les Fils De Jea Timepiece.
DE1003141B (en) * 1952-10-30 1957-02-21 Jeanneret & Co R stopwatch

Also Published As

Publication number Publication date
US3518826A (en) 1970-07-07
DE1773368C3 (en) 1974-07-11
DE1773368A1 (en) 1971-02-18
DE1773368B2 (en) 1973-12-20
FR1572002A (en) 1969-06-20

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