GB1313089A - Stop mechanism for a stop watch or a chronograph - Google Patents

Stop mechanism for a stop watch or a chronograph

Info

Publication number
GB1313089A
GB1313089A GB3891272A GB3891270A GB1313089A GB 1313089 A GB1313089 A GB 1313089A GB 3891272 A GB3891272 A GB 3891272A GB 3891270 A GB3891270 A GB 3891270A GB 1313089 A GB1313089 A GB 1313089A
Authority
GB
United Kingdom
Prior art keywords
hammer
stop
cam
wheel
chronograph
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
GB3891272A
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 GB1313089A publication Critical patent/GB1313089A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G04F7/0842—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms
    • G04F7/0847—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms with column wheel
    • 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

Abstract

1313089 Stop watches; chronographs DAINI SEIKDSHA KK 21 Sept 1970 [3 Oct 1969] 38912/72 Addition to 1311929 Heading G3T In a stop watch or chronograph, the conventional pillar wheel is replaced by a wheel 40 having a ratchet portion 41 which is engaged solely by an indexing member 33 and a second portion which is provided with peripheral recesses 42<SP>1</SP> to receive a projection 43 on a hammer 50. The hammer 50 is biased toward a cam 51 by means of a spring-46 and in its operative position as shown, the hammer actuates the cam to reset a seconds hand. When the user depresses a button (not shown), and thus displaces the member 33 against the force of a spring 34 to index the wheel 40, the projection 43 is forced out of a recess 42<SP>1</SP> and the hammer 50 becomes spaced from the cam 51. A further depression of the button restores the mechanism to the position shown.
GB3891272A 1969-10-03 1970-09-21 Stop mechanism for a stop watch or a chronograph Expired GB1313089A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1969094116U JPS4825156Y1 (en) 1969-10-03 1969-10-03

Publications (1)

Publication Number Publication Date
GB1313089A true GB1313089A (en) 1973-04-11

Family

ID=14101448

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3891272A Expired GB1313089A (en) 1969-10-03 1970-09-21 Stop mechanism for a stop watch or a chronograph
GB4479770A Expired GB1311929A (en) 1969-10-03 1970-09-21 Stop mechanism for a stopwatch

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB4479770A Expired GB1311929A (en) 1969-10-03 1970-09-21 Stop mechanism for a stopwatch

Country Status (4)

Country Link
US (1) US3712036A (en)
JP (1) JPS4825156Y1 (en)
CH (1) CH1463170A4 (en)
GB (2) GB1313089A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1405102A (en) * 1971-08-20 1975-09-03 Smiths Industries Ltd Stop watches
EP0996043B1 (en) * 1998-04-21 2009-03-11 Seiko Epson Corporation Time measuring device
DE69917879T2 (en) 1998-09-10 2005-06-30 Seiko Epson Corp. TIMING DEVICE
ATE390654T1 (en) * 2002-02-01 2008-04-15 Tag Heuer Sa DEVICE WITH CLOCK MOVEMENT AND CHRONOGRAPH MODULE

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US793320A (en) * 1902-01-16 1905-06-27 New Haven Clock Co Stop-watch.
US1851593A (en) * 1930-02-03 1932-03-29 Pastor Thomas Stop watch
CH285850A (en) * 1950-07-31 1952-09-30 Excelsior Park Les Fils De Jea Timepiece.
US3045418A (en) * 1960-06-07 1962-07-24 Ed Heuer & Co Sa Time meter
GB994871A (en) * 1960-09-19 1965-06-10 Smith & Sons Ltd S Improvements in or relating to stop watches

Also Published As

Publication number Publication date
GB1311929A (en) 1973-03-28
JPS4825156Y1 (en) 1973-07-23
US3712036A (en) 1973-01-23
CH1463170A4 (en) 1975-06-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years