US3694885A - Method of manufacturing an escapement lever for a timepiece - Google Patents

Method of manufacturing an escapement lever for a timepiece Download PDF

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Publication number
US3694885A
US3694885A US52093A US3694885DA US3694885A US 3694885 A US3694885 A US 3694885A US 52093 A US52093 A US 52093A US 3694885D A US3694885D A US 3694885DA US 3694885 A US3694885 A US 3694885A
Authority
US
United States
Prior art keywords
lever
electroless nickel
manufacturing
timepiece
pallets
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 - Lifetime
Application number
US52093A
Other languages
English (en)
Inventor
Andre Simon-Vermot
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.)
Les Fabriques dAssortiments Reunies SA FAR
Original Assignee
Les Fabriques dAssortiments Reunies SA FAR
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 Les Fabriques dAssortiments Reunies SA FAR filed Critical Les Fabriques dAssortiments Reunies SA FAR
Application granted granted Critical
Publication of US3694885A publication Critical patent/US3694885A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49579—Watch or clock making
    • Y10T29/49581—Watch or clock making having arbor, pinion, or balance

Definitions

  • the present invention aims at overcoming these drawbacks. It relates to a method of manufacturing an escapement lever for a timepiece, which is broadly characterized by blanking out the lever of a metal sheet, the pallets being made integral with the body of the lever, chemically depositing electroless nickel on to the whole piece, and then subjecting the lever to a finishing operation carried out so as to obtain cold rolled properties in the layer of electroless nickel, this finishingoperation determining the final dimensions of the lever, to which the pallet arbor and the safety-pin are then secured.
  • the metal sheet of which the lever is blanked out may consist, for example, of brass or steel.
  • the electroless nickel is deposited on the piece by chemical way, by dipping the piece into a suitable bath.
  • the thickness of the coating is preferably less than 50.
  • the electroless nickel is not self-lubricating, but has a low coefficient of friction and a high hardness, this representing favorable features. It must be lubricated in order that the escapement operates in a satisfactory manner.
  • the completed lever may be subjected to a heat-treatment at about 800 C so as to increase the hardness of the coating of electroless nickel by precipitation of a phase.
  • a method of manufacturing a timepiece escapement lever including pallets, a pallet arbor and a safetypin comprising the steps of: blanking out the lever from a metal sheet, making the pallets integral with the body of the lever, chemically depositing electroless nickel on to the whole piece, subjecting the lever to a fine blanking operation to obtain cold rolled properties in the layer of electroless nickel to determine the final dimensions of the lever, and securing the pallet arbor and the safety-pin to the lever.
  • a method according to claim 1 characterized by subjecting the completed lever to a heat-treatment, in order to increase the hardness of the coating of electroless nickel.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemically Coating (AREA)
  • Forging (AREA)
US52093A 1969-07-11 1970-07-02 Method of manufacturing an escapement lever for a timepiece Expired - Lifetime US3694885A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1060769A CH514873A (fr) 1969-07-11 1969-07-11 Procédé de fabrication d'une ancre d'horlogerie

Publications (1)

Publication Number Publication Date
US3694885A true US3694885A (en) 1972-10-03

Family

ID=4364996

Family Applications (1)

Application Number Title Priority Date Filing Date
US52093A Expired - Lifetime US3694885A (en) 1969-07-11 1970-07-02 Method of manufacturing an escapement lever for a timepiece

Country Status (3)

Country Link
US (1) US3694885A (enrdf_load_stackoverflow)
CH (2) CH1060769A4 (enrdf_load_stackoverflow)
DE (1) DE2032622B2 (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122665A (en) * 1975-08-05 1978-10-31 Eta A.G. Ebauches-Fabrik Method of manufacturing a pallet lever and pallet lever made by this method
US11092932B2 (en) 2016-07-19 2021-08-17 Nivarox-Far S.A. Component for a timepiece movement
CN116018564A (zh) * 2020-09-15 2023-04-25 Eta瑞士钟表制造股份有限公司 微机械部件，尤其是表面优化的钟表运动件，尤其是擒纵轮
CN116075781A (zh) * 2020-09-15 2023-05-05 Eta瑞士钟表制造股份有限公司 制造表面优化的微机械部件，特别是计时器轮的方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3273306B1 (fr) * 2016-07-19 2025-08-27 Nivarox-FAR S.A. Pièce pour mouvement d'horlogerie
EP4075205B1 (fr) * 2021-04-16 2024-12-11 ETA SA Manufacture Horlogère Suisse Procédé de fabrication d'un mobile d'horlogerie et mobile d'horlogerie obtenu par sa mise en oeuvre

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US540546A (en) * 1895-06-04 George e
US3335562A (en) * 1965-03-03 1967-08-15 Tissot Horlogerie Anchor escapement for timepieces
US3481140A (en) * 1966-04-14 1969-12-02 Far Fab Assortiments Reunies Escapement lever for a timepiece
US3511340A (en) * 1967-12-09 1970-05-12 Far Fab Assortiments Reunies Method of lubricating a timepiece movement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US540546A (en) * 1895-06-04 George e
US3335562A (en) * 1965-03-03 1967-08-15 Tissot Horlogerie Anchor escapement for timepieces
US3481140A (en) * 1966-04-14 1969-12-02 Far Fab Assortiments Reunies Escapement lever for a timepiece
US3511340A (en) * 1967-12-09 1970-05-12 Far Fab Assortiments Reunies Method of lubricating a timepiece movement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122665A (en) * 1975-08-05 1978-10-31 Eta A.G. Ebauches-Fabrik Method of manufacturing a pallet lever and pallet lever made by this method
US11092932B2 (en) 2016-07-19 2021-08-17 Nivarox-Far S.A. Component for a timepiece movement
CN116018564A (zh) * 2020-09-15 2023-04-25 Eta瑞士钟表制造股份有限公司 微机械部件，尤其是表面优化的钟表运动件，尤其是擒纵轮
CN116075781A (zh) * 2020-09-15 2023-05-05 Eta瑞士钟表制造股份有限公司 制造表面优化的微机械部件，特别是计时器轮的方法

Also Published As

Publication number Publication date
CH1060769A4 (enrdf_load_stackoverflow) 1971-07-15
DE2032622A1 (de) 1971-01-28
CH514873A (fr) 1971-07-15
DE2032622B2 (de) 1972-02-10

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