CH610177GA3 - Method of fixing the inner end of a clockwork hairspring to a balance - Google Patents

Method of fixing the inner end of a clockwork hairspring to a balance Download PDF

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Publication number
CH610177GA3
CH610177GA3 CH833376A CH833376A CH610177GA3 CH 610177G A3 CH610177G A3 CH 610177GA3 CH 833376 A CH833376 A CH 833376A CH 833376 A CH833376 A CH 833376A CH 610177G A3 CH610177G A3 CH 610177GA3
Authority
CH
Switzerland
Prior art keywords
hairspring
inner end
balance
fixing
clockwork
Prior art date
Application number
CH833376A
Other versions
CH610177B (en
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
Publication of CH610177B publication Critical patent/CH610177B/en
Application filed filed Critical
Priority to CH833376A priority Critical patent/CH610177GA3/en
Priority to FR7622017A priority patent/FR2318448A1/en
Priority to DE19762632230 priority patent/DE2632230C3/en
Publication of CH610177GA3 publication Critical patent/CH610177GA3/en

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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/34—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring onto the balance
    • G04B17/345—Details of the spiral roll

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Steps, Ramps, And Handrails (AREA)
  • Hair Curling (AREA)

Abstract

The diameter (0) is determined of the cylindrical part, collet or arbor of the balance, which will clamp the inner end part of the hairspring, through the formula: <IMAGE> where d is the internal diameter of manufacture of the hairspring, p is the pitch of the hairspring, and e is the thickness of the hairspring. The main spring-winding hook may or may not be cut before fixing. This method enables hairsprings to be fixed through a loop closed at their inner end whilst ensuring an accurate start point for the hairspring and, consequently, correct running.
CH833376A 1975-07-18 1976-06-30 Method of fixing the inner end of a clockwork hairspring to a balance CH610177GA3 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CH833376A CH610177GA3 (en) 1976-06-30 1976-06-30 Method of fixing the inner end of a clockwork hairspring to a balance
FR7622017A FR2318448A1 (en) 1975-07-18 1976-07-12 Attachment for timepiece balance spring - has clamping point diametrically opposite end of spring end section
DE19762632230 DE2632230C3 (en) 1975-07-18 1976-07-16 Method of attaching the balance spring of a watch movement and spiral spring attached by this method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH833376A CH610177GA3 (en) 1976-06-30 1976-06-30 Method of fixing the inner end of a clockwork hairspring to a balance

Publications (2)

Publication Number Publication Date
CH610177B CH610177B (en)
CH610177GA3 true CH610177GA3 (en) 1979-04-12

Family

ID=4338721

Family Applications (1)

Application Number Title Priority Date Filing Date
CH833376A CH610177GA3 (en) 1975-07-18 1976-06-30 Method of fixing the inner end of a clockwork hairspring to a balance

Country Status (1)

Country Link
CH (1) CH610177GA3 (en)

Also Published As

Publication number Publication date
CH610177B (en)

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