GB1405102A - Stop watches - Google Patents

Stop watches

Info

Publication number
GB1405102A
GB1405102A GB3908871A GB3908871A GB1405102A GB 1405102 A GB1405102 A GB 1405102A GB 3908871 A GB3908871 A GB 3908871A GB 3908871 A GB3908871 A GB 3908871A GB 1405102 A GB1405102 A GB 1405102A
Authority
GB
United Kingdom
Prior art keywords
lever
pin
button
stop
plunger
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
GB3908871A
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.)
Smiths Group PLC
Original Assignee
Smiths Group PLC
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 Smiths Group PLC filed Critical Smiths Group PLC
Priority to GB3908871A priority Critical patent/GB1405102A/en
Priority to CA148,986A priority patent/CA974372A/en
Priority to US00279400A priority patent/US3823612A/en
Priority to DE2240080A priority patent/DE2240080A1/en
Priority to AT707672A priority patent/AT335919B/en
Priority to CH1227172D priority patent/CH1227172A4/xx
Priority to AU45765/72A priority patent/AU468534B2/en
Priority to FR7229694A priority patent/FR2150388B1/fr
Priority to CH1227172A priority patent/CH585431B5/xx
Priority to JP8356172A priority patent/JPS5613274B2/ja
Publication of GB1405102A publication Critical patent/GB1405102A/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
    • G04F7/0852—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms with member having a rotational two-way movement, e.g. navette
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18888—Reciprocating to or from oscillating
    • Y10T74/18896—Snap action
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18888—Reciprocating to or from oscillating
    • Y10T74/18896—Snap action
    • Y10T74/18904—Plate spring

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Mechanical Control Devices (AREA)
  • Braking Arrangements (AREA)

Abstract

1405102 Stop-watches SMITHS INDUSTRIES Ltd 18 Aug 1972 [20 Aug 1971] 39088/71 Heading G3T A start-stop mechanism of a stop watch comprises a lever 26 pivoted at 27 and having notches 24, 25 which are alternately engaged by end portions 22, 23 of a plunger 16 when button 13 is repeatedly depressed. A spring 17 biases the plunger and button outwardly relative to a fixed sleeve 15. After engagement of an end portion 22 or 23 in a corresponding notch, the plunger is tilted sideways as the lever 26 pivots to the other of its two positions. A snap action is given by an overcentre toggle mechanism comprising a tension spring 37 attached to a fixed pin 38 and a pin 29 on the lever 26. The pin 29 also engages a slot in a brake lever 30 which is thereby rocked about its pivot 31. In the STOP position shown, a rod 32 fixed to the lever 30 engages a brake drum 33 on the seconds hand shaft, and a pin 34 on the lever arrests balance 35. Depression of button 13 will rock the lever 30 clockwise to start the watch, bringing a flange 36 on the lever into a position to prevent inward movement of a hands resetting button 12.
GB3908871A 1971-08-20 1971-08-20 Stop watches Expired GB1405102A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
GB3908871A GB1405102A (en) 1971-08-20 1971-08-20 Stop watches
CA148,986A CA974372A (en) 1971-08-20 1972-08-09 Trip mechanisms
US00279400A US3823612A (en) 1971-08-20 1972-08-10 Trip mechanisms
DE2240080A DE2240080A1 (en) 1971-08-20 1972-08-16 START-STOP MECHANISM IN A STOPWATCH
AT707672A AT335919B (en) 1971-08-20 1972-08-16 STOPWATCH
CH1227172D CH1227172A4 (en) 1971-08-20 1972-08-18
AU45765/72A AU468534B2 (en) 1971-08-20 1972-08-18 Improvements in or relating to trip mechanisms
FR7229694A FR2150388B1 (en) 1971-08-20 1972-08-18
CH1227172A CH585431B5 (en) 1971-08-20 1972-08-18
JP8356172A JPS5613274B2 (en) 1971-08-20 1972-08-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3908871A GB1405102A (en) 1971-08-20 1971-08-20 Stop watches

Publications (1)

Publication Number Publication Date
GB1405102A true GB1405102A (en) 1975-09-03

Family

ID=10407568

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3908871A Expired GB1405102A (en) 1971-08-20 1971-08-20 Stop watches

Country Status (9)

Country Link
US (1) US3823612A (en)
JP (1) JPS5613274B2 (en)
AT (1) AT335919B (en)
AU (1) AU468534B2 (en)
CA (1) CA974372A (en)
CH (2) CH1227172A4 (en)
DE (1) DE2240080A1 (en)
FR (1) FR2150388B1 (en)
GB (1) GB1405102A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1722673A4 (en) * 1973-12-07 1975-11-14
ATE457480T1 (en) * 2002-10-07 2010-02-15 Vaucher Mft Fleurier Sa CHRONOGRAPH WATCH

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US448549A (en) * 1891-03-17 Stop-watch
US995681A (en) * 1910-03-16 1911-06-20 Howard H Kanagy Electric lamplighting device for automobiles.
US1493125A (en) * 1919-11-25 1924-05-06 Sterling Watch Company Inc Stop watch
US1540247A (en) * 1922-11-08 1925-06-02 Charles L Bowman Clutch-shifting device
NL14823C (en) * 1924-11-13 1926-06-15
JPS4825156Y1 (en) * 1969-10-03 1973-07-23

Also Published As

Publication number Publication date
CA974372A (en) 1975-09-16
US3823612A (en) 1974-07-16
FR2150388A1 (en) 1973-04-06
DE2240080A1 (en) 1973-02-22
CH1227172A4 (en) 1976-09-15
ATA707672A (en) 1976-07-15
JPS4830464A (en) 1973-04-21
AT335919B (en) 1977-04-12
JPS5613274B2 (en) 1981-03-27
FR2150388B1 (en) 1976-06-11
CH585431B5 (en) 1977-02-28
AU4576572A (en) 1974-02-21
AU468534B2 (en) 1976-01-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee