JPS57199980A - Spiral spring type timer - Google Patents

Spiral spring type timer

Info

Publication number
JPS57199980A
JPS57199980A JP8528681A JP8528681A JPS57199980A JP S57199980 A JPS57199980 A JP S57199980A JP 8528681 A JP8528681 A JP 8528681A JP 8528681 A JP8528681 A JP 8528681A JP S57199980 A JPS57199980 A JP S57199980A
Authority
JP
Japan
Prior art keywords
spiral spring
main shaft
ratchet
hook
wheel
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.)
Pending
Application number
JP8528681A
Other languages
Japanese (ja)
Inventor
Umeji Kato
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.)
Nakagawa Electric Ind Co Ltd
Original Assignee
Nakagawa Electric Ind Co Ltd
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 Nakagawa Electric Ind Co Ltd filed Critical Nakagawa Electric Ind Co Ltd
Priority to JP8528681A priority Critical patent/JPS57199980A/en
Publication of JPS57199980A publication Critical patent/JPS57199980A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
    • G04F3/02—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms
    • G04F3/04—Additional arrangements in connection with ordinary non-electric clocks for this purpose

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)

Abstract

PURPOSE:To set a timer only by a main shaft by the sliding of a ratchet hook when the main shaft is turned in the winding direction of the main shaft then, a spiral spring is wound, and then transferring the force of the spiral spring to a timer mechanism by the engagement of the ratchet hook when the main shaft is freed from a hand. CONSTITUTION:For time setting, a main shaft 5 is turned in a spring winding direction (a). Then, an engagement piece engages a spring hook piece 10 to wind a spiral spring. At this time, a ratchet hook 19 flexes in a radius direction to slide in ratchet internal teeth 20. Then when the main shaft 5 is freed from the hand, the recoiling force of the spiral spring rotates the 1st wheel in a direction (b), and the return rotation of the 1st wheel by the spiral spring is trasferred to a timer mechanism through the 2nd pinion 17, ratchet hook 19 and ratchet internal teeth 20, rotating the 1st wheel 12 at a constant speed.
JP8528681A 1981-06-03 1981-06-03 Spiral spring type timer Pending JPS57199980A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8528681A JPS57199980A (en) 1981-06-03 1981-06-03 Spiral spring type timer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8528681A JPS57199980A (en) 1981-06-03 1981-06-03 Spiral spring type timer

Publications (1)

Publication Number Publication Date
JPS57199980A true JPS57199980A (en) 1982-12-08

Family

ID=13854321

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8528681A Pending JPS57199980A (en) 1981-06-03 1981-06-03 Spiral spring type timer

Country Status (1)

Country Link
JP (1) JPS57199980A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5495381A (en) * 1978-01-14 1979-07-27 Matsushita Electric Works Ltd Timer with sensor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5495381A (en) * 1978-01-14 1979-07-27 Matsushita Electric Works Ltd Timer with sensor

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