GB707759A - Stop watch or clock - Google Patents

Stop watch or clock

Info

Publication number
GB707759A
GB707759A GB17560/51A GB1756051A GB707759A GB 707759 A GB707759 A GB 707759A GB 17560/51 A GB17560/51 A GB 17560/51A GB 1756051 A GB1756051 A GB 1756051A GB 707759 A GB707759 A GB 707759A
Authority
GB
United Kingdom
Prior art keywords
lever
finger
balance
watch
impulses
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
GB17560/51A
Inventor
Hans Schlenker
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.)
Gebr Junghans AG
Original Assignee
Gebr Junghans AG
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 Gebr Junghans AG filed Critical Gebr Junghans AG
Priority to GB17560/51A priority Critical patent/GB707759A/en
Publication of GB707759A publication Critical patent/GB707759A/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
    • G04F7/06—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator running only during the time interval to be measured, e.g. stop-watch
    • G04F7/062—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator running only during the time interval to be measured, e.g. stop-watch 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
    • G04F7/0814—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)
  • Electromechanical Clocks (AREA)

Abstract

707,759. Clocks and watches. JUNGHANS AKT.-GES. GEB. July 24, 1951, No. 17560/51. Class 139 A stop-watch or clock for measuring time in fractions of a second is characterized in that a column wheel has associated with it a member which impulses the balance for starting the watch, which arrests it for stopping the watch and which impulses the balance again in order to zeroize the watch, and a further member which, during the zeroing operation, stops the hand indicating fractions of a second upon it reaching the zero position. The column wheel 20a, Fig. 1, is stepped on by a push-button 35 and controls three levers 15, 22 and 39. The lever 15 is normally positioned so that a projection 15b thereof abuts a finger 14 carried by a shaft 11 so that a hand indicating hundredths of a second and also fixed to the shaft 11 is in its zero position. The lever 22 is positioned so that a spring finger 25, 25a carried thereby is away from the balance 27. Upon depression of the button 35 the column wheel 20a is stepped on whereupon the lever 15 is rocked so that its projection 15b leaves the finger 14 and the lever 22 is moved against the pressure of a spring 24 until the spring finger 25 occupies the position 34. In moving, the spring finger impulses the balance 27 to start the watch. Upon another depression of the button 35 the column wheel is stepped on again whereupon the lever 22 is moved by the spring 24 until the finger 25 arrests the balance 27. Upon a third depression of the button 35 the lever 22 is freed to be pulled back to its initial position and in moving again impulses the balance. At the same time the lever 15 is moved back into the path of the finger 14 so that the hand on the shaft 11 is arrested in its zero position. The lever 39 co-operates with heart-shaped cams 41, 42 to zeroize the seconds and minutes hands in the usual way.
GB17560/51A 1951-07-24 1951-07-24 Stop watch or clock Expired GB707759A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB17560/51A GB707759A (en) 1951-07-24 1951-07-24 Stop watch or clock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17560/51A GB707759A (en) 1951-07-24 1951-07-24 Stop watch or clock

Publications (1)

Publication Number Publication Date
GB707759A true GB707759A (en) 1954-04-21

Family

ID=10097319

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17560/51A Expired GB707759A (en) 1951-07-24 1951-07-24 Stop watch or clock

Country Status (1)

Country Link
GB (1) GB707759A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH703576A2 (en) * 2011-03-22 2012-01-13 Lvmh Swiss Mft Sa Mechanical movement for use in mechanical chronograph, has launcher giving impulse to staff or hub mounted on staff, to start regulator unit when user starts chronograph, and regulator unit comprising hairspring mounted on staff

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH703576A2 (en) * 2011-03-22 2012-01-13 Lvmh Swiss Mft Sa Mechanical movement for use in mechanical chronograph, has launcher giving impulse to staff or hub mounted on staff, to start regulator unit when user starts chronograph, and regulator unit comprising hairspring mounted on staff
CH703576A3 (en) * 2011-03-22 2012-03-15 Lvmh Swiss Mft Sa Mechanical movement for chronograph watch.
WO2012127019A1 (en) 2011-03-22 2012-09-27 Lvmh Swiss Manufactures Sa Mechanical movement for a chronograph watch

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