HK66885A - Method of making hands for a timepiece - Google Patents

Method of making hands for a timepiece

Info

Publication number
HK66885A
HK66885A HK668/85A HK66885A HK66885A HK 66885 A HK66885 A HK 66885A HK 668/85 A HK668/85 A HK 668/85A HK 66885 A HK66885 A HK 66885A HK 66885 A HK66885 A HK 66885A
Authority
HK
Hong Kong
Prior art keywords
hand member
protrusion
seat portion
timepiece
bush
Prior art date
Application number
HK668/85A
Inventor
Tsuneji Takasugi
Kazuyuki Neko
Original Assignee
Citizen Watch Co Ltd
Ageo Seimitsu Mfg 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 Citizen Watch Co Ltd, Ageo Seimitsu Mfg Co Ltd filed Critical Citizen Watch Co Ltd
Publication of HK66885A publication Critical patent/HK66885A/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
    • G04B19/00—Indicating the time by visual means
    • G04B19/04—Hands; Discs with a single mark or the like
    • G04B19/042—Construction and manufacture of the hands; arrangements for increasing reading accuracy
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0043—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms
    • G04D3/0046—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms for hands

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Forging (AREA)
  • ing And Chemical Polishing (AREA)
  • Electromechanical Clocks (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

A method of making aluminium hands for timepieces comprises annealing an aluminium hand member 2 at 160-200 DEG C for 20-60 minutes, forcing the flange 3a of a (brass) bush 3 into the lower surface of a seat portion of the hand member, forming a protrusion 6 on the upper surface of the seat portion of the hand member, shaping the upper surface of the hand member by pressing, and finishing the the protrusion on the upper surface of the seat portion by machining using a diamond cutting tool. As illustrated the bush 3 is staked in the band member 2 by tools 4, 5 prior to annealing. A pressing step using dies 8, 9 forces the flange 3a into the member 2 and simultaneously forms the protrusion 6. After machining the hand is coated with gold. <IMAGE>
HK668/85A 1981-05-26 1985-09-05 Method of making hands for a timepiece HK66885A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56079863A JPS57193247A (en) 1981-05-26 1981-05-26 Manufacture of aluminum pointer

Publications (1)

Publication Number Publication Date
HK66885A true HK66885A (en) 1985-09-13

Family

ID=13702035

Family Applications (1)

Application Number Title Priority Date Filing Date
HK668/85A HK66885A (en) 1981-05-26 1985-09-05 Method of making hands for a timepiece

Country Status (5)

Country Link
JP (1) JPS57193247A (en)
CH (1) CH643100B (en)
DE (1) DE3215399A1 (en)
GB (1) GB2099193B (en)
HK (1) HK66885A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2789923B1 (en) * 1999-02-19 2001-04-06 Universo Sa PROCESS FOR PRODUCING A METAL STRIP FOR THE MANUFACTURE OF NEEDLES AND STRIP THUS OBTAINED
CN111399365A (en) * 2020-03-26 2020-07-10 深圳润福金技术开发有限公司 Clock pointer fixing device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH30898A (en) * 1904-06-27 1905-02-15 Berthoud Hugoniot G Second hand for watches

Also Published As

Publication number Publication date
DE3215399C2 (en) 1989-06-29
CH643100GA3 (en) 1984-05-30
DE3215399A1 (en) 1982-12-23
GB2099193B (en) 1984-10-03
JPH0138573B2 (en) 1989-08-15
CH643100B (en)
GB2099193A (en) 1982-12-01
JPS57193247A (en) 1982-11-27

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