GB1451257A - Fastening the inner end of a mainspring to the barrel arbor of a clock or watch movement - Google Patents

Fastening the inner end of a mainspring to the barrel arbor of a clock or watch movement

Info

Publication number
GB1451257A
GB1451257A GB184074A GB184074A GB1451257A GB 1451257 A GB1451257 A GB 1451257A GB 184074 A GB184074 A GB 184074A GB 184074 A GB184074 A GB 184074A GB 1451257 A GB1451257 A GB 1451257A
Authority
GB
United Kingdom
Prior art keywords
arbor
spring
inner end
clock
mainspring
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
GB184074A
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.)
Ebauchesfabrik ETA AG
Original Assignee
Ebauchesfabrik ETA 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 Ebauchesfabrik ETA AG filed Critical Ebauchesfabrik ETA AG
Publication of GB1451257A publication Critical patent/GB1451257A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/18—Constructions for connecting the ends of the mainsprings with the barrel or the arbor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)

Abstract

1451257 Clock springs ETA A G EBAUCHES FABRIK 15 Jan 1974 [9 Feb 1973] 01840/74 Heading F2S [Also in Division G3] The inner end 9 of a spiral main spring 8 is reduced in width and wrapped around a barrel arbor 11 for at least two complete turns so that it is attached to the arbor by friction. As shown the arbor has a circular cylindrical surface and the spring end 9 is cut with a length exactly equal to twice the arbor circumference and with a width equal to one third that of the spring. The end corner 12 lies on the line of the spring edge 14. In an alternative embodiment the end is cut as an elongated isosceles triangle with a similarly shaped central aperture within which the spring tip lies when the end is wrapped around the arbor (Figs. 1 and 3, not shown).
GB184074A 1973-02-09 1974-01-15 Fastening the inner end of a mainspring to the barrel arbor of a clock or watch movement Expired GB1451257A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH190573A CH562463A (en) 1973-02-09 1973-02-09

Publications (1)

Publication Number Publication Date
GB1451257A true GB1451257A (en) 1976-09-29

Family

ID=4221332

Family Applications (1)

Application Number Title Priority Date Filing Date
GB184074A Expired GB1451257A (en) 1973-02-09 1974-01-15 Fastening the inner end of a mainspring to the barrel arbor of a clock or watch movement

Country Status (4)

Country Link
US (1) US3834154A (en)
CH (2) CH562463A (en)
FR (1) FR2217739B1 (en)
GB (1) GB1451257A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2682028C1 (en) * 2017-11-20 2019-03-14 Публичное акционерное общество "Ракетно-космическая корпорация "Энергия" имени С.П. Королева" Spiral spring mechanism

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2390732A1 (en) * 2010-05-27 2011-11-30 Association Suisse pour la Recherche Horlogère Barrel spring
EP2570862B1 (en) * 2011-09-15 2014-03-05 ETA SA Manufacture Horlogère Suisse Clock barrel assembly with reduced core diameter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE612146C (en) * 1935-10-29 E H Jakob Kienzle Dr Ing Tension spring fastening

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2682028C1 (en) * 2017-11-20 2019-03-14 Публичное акционерное общество "Ракетно-космическая корпорация "Энергия" имени С.П. Королева" Spiral spring mechanism

Also Published As

Publication number Publication date
FR2217739A1 (en) 1974-09-06
US3834154A (en) 1974-09-10
FR2217739B1 (en) 1976-11-19
CH562463A (en) 1975-05-30
CH190573A4 (en) 1974-12-31
DE2362612A1 (en) 1974-08-15
DE2362612B2 (en) 1977-02-24

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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