GB1311929A - Stop mechanism for a stopwatch - Google Patents

Stop mechanism for a stopwatch

Info

Publication number
GB1311929A
GB1311929A GB4479770A GB4479770A GB1311929A GB 1311929 A GB1311929 A GB 1311929A GB 4479770 A GB4479770 A GB 4479770A GB 4479770 A GB4479770 A GB 4479770A GB 1311929 A GB1311929 A GB 1311929A
Authority
GB
United Kingdom
Prior art keywords
wheel
lever
stop
button
projection
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
GB4479770A
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 GB1311929A publication Critical patent/GB1311929A/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

1311929 Stop watches DAINI SEIKOSHA KK 21 Sept 1970 [3 Oct 1969] 44797/70 Heading G3T In a stop watch, the conventional pillar wheel is replaced by a wheel 40 having a ratchet portion 41 and a peripheral portion 42 which includes recesses 42' to receive a projection 47 on a balance wheel stop lever 43. The number of recesses 42' is one half of the number of ratchet teeth, and depression of button 32 against spring 34 indexes the wheel 40 to allow a head 45 on the lever 43 to touch balance wheel 31. A further depression of the button 32 returns the mechanism to the position shown. A pin 48 fixed to case 30 limits the travel of the lever 43 so that the projection 47 fits loosely in a recess 42'.
GB4479770A 1969-10-03 1970-09-21 Stop mechanism for a stopwatch Expired GB1311929A (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
GB1311929A true GB1311929A (en) 1973-03-28

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 Before (1)

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

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
CN1177264C (en) * 1998-04-21 2004-11-24 精工爱普生株式会社 Time measuring device
DE69937375T2 (en) 1998-09-10 2008-07-17 Seiko Epson Corp. Clock
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
US3712036A (en) 1973-01-23
CH1463170A4 (en) 1975-06-30
GB1313089A (en) 1973-04-11
JPS4825156Y1 (en) 1973-07-23

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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