GB789043A - Improvements in or relating to time-keeping devices - Google Patents

Improvements in or relating to time-keeping devices

Info

Publication number
GB789043A
GB789043A GB372056A GB372056A GB789043A GB 789043 A GB789043 A GB 789043A GB 372056 A GB372056 A GB 372056A GB 372056 A GB372056 A GB 372056A GB 789043 A GB789043 A GB 789043A
Authority
GB
United Kingdom
Prior art keywords
barrel
mainspring
projection
contact
coupling
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
GB372056A
Inventor
Itaru Osawa
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.)
Kinoshita & Co Ltd
Original Assignee
Kinoshita & 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 Kinoshita & Co Ltd filed Critical Kinoshita & Co Ltd
Priority to GB372056A priority Critical patent/GB789043A/en
Publication of GB789043A publication Critical patent/GB789043A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C1/00—Winding mechanical clocks electrically
    • G04C1/10—Protection against overwinding
    • G04C1/12—Protection against overwinding of the spring

Landscapes

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

Abstract

789,043. Clocks and watches. KINOSHITA & CO., Ltd. Feb. 7, 1956, No. 3720/56. Class 139 The mainspring 3, Fig. 3. is attached to the arbor 1 and to the inner barrel. 4. An outer barrel 7 surrounds the barrel 4 and is connected thereto by a spring slip coupling comprising spring strips 8 each fixed at one end to the barrel 7 and provided at the other end with a projection 9 -which normally engages a notch 6 on the outer surface of the barrel 4. The tension of each spring 8 is adjustable by a screw 10. A pivoted lever 12 carries at one end a contact 15 and at the other has a projection 13 which rides the outer surface of the barrel 7. Normally the mainspring 3 drives the barrels 4 and 7 clockwise the latter being connected to the gear train. When the projection 13 of the lever 12 enters. one of a series of notches 11 in the barrel 7 the contact 15 meets the contact 17 and an electric motor 19 rotates the arbor 1 to wind the mainspring. The mainspring is actually over wound whereupon the coupling between the barrels 4 and 7 slips until the mainspring unwinds to am extent sufficient to cause re-engagement of the coupling. This cycle continuously repeats. Closure of a switch 21 provided in the motor circuit effects the initial winding of the mainspring.
GB372056A 1956-02-07 1956-02-07 Improvements in or relating to time-keeping devices Expired GB789043A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB372056A GB789043A (en) 1956-02-07 1956-02-07 Improvements in or relating to time-keeping devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB372056A GB789043A (en) 1956-02-07 1956-02-07 Improvements in or relating to time-keeping devices

Publications (1)

Publication Number Publication Date
GB789043A true GB789043A (en) 1958-01-15

Family

ID=9763696

Family Applications (1)

Application Number Title Priority Date Filing Date
GB372056A Expired GB789043A (en) 1956-02-07 1956-02-07 Improvements in or relating to time-keeping devices

Country Status (1)

Country Link
GB (1) GB789043A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111942957A (en) * 2020-09-04 2020-11-17 杭州富阳行健塑料五金有限公司 Equipment for winding wiring of air conditioner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111942957A (en) * 2020-09-04 2020-11-17 杭州富阳行健塑料五金有限公司 Equipment for winding wiring of air conditioner

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