US3789605A - Gold plated cases for time-keeping instruments - Google Patents

Gold plated cases for time-keeping instruments Download PDF

Info

Publication number
US3789605A
US3789605A US00165008A US3789605DA US3789605A US 3789605 A US3789605 A US 3789605A US 00165008 A US00165008 A US 00165008A US 3789605D A US3789605D A US 3789605DA US 3789605 A US3789605 A US 3789605A
Authority
US
United States
Prior art keywords
gold
case
watch
cap
plated
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
US00165008A
Other languages
English (en)
Inventor
M Kishida
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.)
Suwa Seikosha KK
Original Assignee
Suwa Seikosha KK
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 Suwa Seikosha KK filed Critical Suwa Seikosha KK
Application granted granted Critical
Publication of US3789605A publication Critical patent/US3789605A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • G04B37/00—Cases
    • G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases

Definitions

  • a case body for a water-proof watch is made of stainless steel and is heavily gold-plated over the exterior thereof.
  • Such a case uses no solder andno brass and consequently is free of the problem of rusting. It also strongly resists abrasion.
  • the back of the case in the interest of economy, may be free of gold-plating.
  • the case body may of one piece or may consist ofa plurality of pieces.
  • gold-plated gold-plating
  • goldplated goldplated
  • plating as used herein all refer to electroplating with gold.
  • an object of the present invention is to provide a water proof watch case having a gold exterior which is free of the problem of rusting.
  • Another object of the present invention is to provide a water proof watch case with gold exterior which may be manufactured economically.
  • a further object of the invention is to provide a water proof watch case with gold exterior which is resistant to abrasion and scratching;
  • Still another object of the invention is to provide a water proof watch case with gold exterior where the watch case may have a reverse incline or a complex shape difficult or impossible to cover with a gold cap.
  • the invention accordingly comprises an article of manufacture possessing the features, properties, and the relation'of elements which will be exemplified in the article hereinafter described, and the scope of the invention will be indicated in the claims.
  • FIG. 1 is an elevational cross section of a conventional watch having a gold plated body and a stainless steel back;
  • FIG. 2 is an elevational cross section of a watch of conventional construction to which has been fitted a gold cap;
  • FIG. 3 is an elevational cross section of a gold-plated watch in accordance with the present invention.
  • FIG. 4 is an elevational cross section of a gold-plated watch in accordance with the present invention wherein the rear of the watch is free of gold;
  • FIG. 5 is an elevational cross section of a gold-plated watch in accordance with the present invention showing how the type of watch normally fitted with a gold cap can be covered with gold plate;
  • FIG. 6 is a cross section of gold-plated watch crown.
  • case-body 11 is generally made of brass.
  • the initial insertion and subsequent removal and replacement of movement 12 as well as of watch crystal 13 generally result in marring of gold plate 14 due to the fact that the brass substrate is relatively soft.
  • the gold plate extends around the rear of the case, contact with the wrist and the perspiration thereon eventually result in wearing away of the gold and rusting of the brass substrate.
  • the conventional method of handling this problem is to provide a rear cover 15 of stainless steel. To hold the rear cover 15 in place, it is either soldered or cemented to the case-body.
  • this solution is hardly satisfactory since the cement frequently fails or rusting occurs at the soldered joint. Consequently, although such a water proof, one-piece case construction is in great demand, and is profitable to manufacture, nevertheless this type of construction is not widely used.
  • FIG. 2 Another conventional method of providing a waterproof watch case with a gold exterior is to use a stainless steel casebody 16 as shown in FIG. 2.
  • the body is covered with a gold cap 17.
  • the cap 17 is forced into place by a press after which it must be polished and pressed into the desired shape with a spatula.
  • a number of molds are necessary to shape the cap.
  • hand work is necessary for sharpening the corners with a spatula and for polishing.
  • solder applied between the base of the stainless steel and the gold cap becomes discolored.
  • an entire case body 18 is made of stainless steel. This is covered with a layer of gold plate 19 thick enough to withstand the anticipated wear. As shown in FIG. 3, the layer of gold plate 19 extends around the rear of the case body.
  • the rear of the watch may be covered during the plating operation so that no gold is deposited thereon.
  • that portion of the gold plate 19 on the rear of the case body 18 may be removed mechanically.
  • a watch having no gold on the rear of the case body 18 is shown in FIG. 4.
  • a watch having a two-piece case body is shown in elevational cross section in FIG. 5 where the case body consists of the case itself 16 and a rear portion 21, both parts being made of stainless steel.
  • the case body construction is identical with that of FIG. 2; however, as the result of using a plating operation instead of forcing on a gold cap, it becomes possible to cover surface 22 which has a reverse inclination.
  • FIG. 6 shows watch crown 23 coated with gold plate 24.
  • a gold plate deposited thereon shows virtually no abrasion or other marring caused by contact with the movementor the watch crystal during assembly or during repair. Furthermore, such a watch can be worn for long periods without such discoloration as would result from the presence of solder and without corrosion of the watch from perspiration of the wearer.
  • the application of gold by electroplating rather than as a cap makes it possible to coat undercut or reversely inclined surfaces.
  • a water-proof watch comprising a stainless-steel case-body of one piece construction and a coating of electroplated gold thereon, wherein said coating extends over the entire exterior of said case-body 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electroplating Methods And Accessories (AREA)
US00165008A 1970-07-23 1971-07-22 Gold plated cases for time-keeping instruments Expired - Lifetime US3789605A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6397270 1970-07-23

Publications (1)

Publication Number Publication Date
US3789605A true US3789605A (en) 1974-02-05

Family

ID=13244697

Family Applications (1)

Application Number Title Priority Date Filing Date
US00165008A Expired - Lifetime US3789605A (en) 1970-07-23 1971-07-22 Gold plated cases for time-keeping instruments

Country Status (3)

Country Link
US (1) US3789605A (OSRAM)
FR (1) FR2099554B1 (OSRAM)
GB (1) GB1350943A (OSRAM)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186552A (en) * 1976-11-30 1980-02-05 Citizen Watch Co., Ltd. Wristwatch case
US4696577A (en) * 1985-09-06 1987-09-29 Eta S.A. Fabriques D'ebauches Integral watch case middle and movement plate and method of making same
US5153581A (en) * 1986-06-16 1992-10-06 Bull, S.A. Method for authentication by an external medium of a portable object such as a memory card coupled to this medium
US5333123A (en) * 1993-07-23 1994-07-26 Timex Corporation Continuous waterproof timepiece case with integral case back blank
US5363350A (en) * 1992-12-02 1994-11-08 Smh Management Services Ag Watch case with hollowed-out caseband
US20170261936A1 (en) * 2016-03-14 2017-09-14 Nivarox-Far S.A. Economical timepiece display component

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475984A1 (fr) * 1980-02-20 1981-08-21 Dupont S T Complexe stratifie resistant a la corrosion, comprenant un substrat metallique et une couche externe en un materiau different, notamment en une matiere noble
WO2016004730A1 (zh) * 2014-07-11 2016-01-14 福州小神龙表业技术研发有限公司 一种无底盖表及其生产工艺
CN107598486B (zh) * 2017-08-29 2019-11-26 惠州市好得高精密五金有限公司 一种在手表表壳上包金的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2553012A (en) * 1948-10-15 1951-05-15 Star Watch Case Company Waterproof watchcase
CH287618A (fr) * 1950-12-23 1952-12-15 Boites La Centrale Fab De Boîtier de montre.
US2951333A (en) * 1956-11-30 1960-09-06 Morf Ernest Watertight wrist-watch case
CH427660A (fr) * 1964-12-22 1967-07-14 Tissot Horlogerie Boîte de montre

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH183261A (fr) * 1935-08-15 1936-03-31 Favre Henri Boîte de montre-bracelet.
CH305776A (de) * 1954-12-23 1955-03-15 Roamer Watch Co Sa Verfahren zur Herstellung eines aus Schale und aus Werktragring bestehenden Uhrgehäuseteils und nach diesem Verfahren hergestellter Uhrgehäuseteil.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2553012A (en) * 1948-10-15 1951-05-15 Star Watch Case Company Waterproof watchcase
CH287618A (fr) * 1950-12-23 1952-12-15 Boites La Centrale Fab De Boîtier de montre.
US2951333A (en) * 1956-11-30 1960-09-06 Morf Ernest Watertight wrist-watch case
CH427660A (fr) * 1964-12-22 1967-07-14 Tissot Horlogerie Boîte de montre

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186552A (en) * 1976-11-30 1980-02-05 Citizen Watch Co., Ltd. Wristwatch case
US4696577A (en) * 1985-09-06 1987-09-29 Eta S.A. Fabriques D'ebauches Integral watch case middle and movement plate and method of making same
US5153581A (en) * 1986-06-16 1992-10-06 Bull, S.A. Method for authentication by an external medium of a portable object such as a memory card coupled to this medium
US5363350A (en) * 1992-12-02 1994-11-08 Smh Management Services Ag Watch case with hollowed-out caseband
US5333123A (en) * 1993-07-23 1994-07-26 Timex Corporation Continuous waterproof timepiece case with integral case back blank
US20170261936A1 (en) * 2016-03-14 2017-09-14 Nivarox-Far S.A. Economical timepiece display component
US10474105B2 (en) * 2016-03-14 2019-11-12 Nivarox-Far S.A. Economical timepiece display component

Also Published As

Publication number Publication date
FR2099554B1 (OSRAM) 1975-02-07
GB1350943A (en) 1974-04-24
FR2099554A1 (OSRAM) 1972-03-17

Similar Documents

Publication Publication Date Title
US3789605A (en) Gold plated cases for time-keeping instruments
US4737252A (en) Method of coating a metallic article of merchandise with a protective transparent film of abrasion-resistance material
US3495398A (en) Watertight watch-case with laminated crystal
US6087018A (en) Method for surface treatment, ornaments and electronic devices
US4495254A (en) Protectively-coated gold-plated article of jewelry or wristwatch component
US2316303A (en) Semibright nickel deposition
US3662537A (en) Construction of rotating bezel section for watch cases
JPS6259889A (ja) 携帯時計のプレ−ト付胴とその製作法
JPS60138066A (ja) 時計用外装部品の表面処理方法
JPS58109877A (ja) 腕時計ケ−スの胴およびその製造方法
GB583872A (en) Improvements in or relating to hardening cylinder bores and other surfaces by the electrodeposition of a wear-resisting metal, such as chromium
GB860291A (en) Method of coating articles by electrodeposition
JPS6013094A (ja) 腕時計用バンドの製造方法
GB966604A (en) Improvements in or relating to the production of wear-resistant surfaces of measuring tools or gauges
US2305050A (en) Electroformed article
US5029149A (en) Object capped by a protective layer
JPS6237712B2 (OSRAM)
JPS5884968A (ja) 時計用硬質外装部品
US3726082A (en) Watch case
US3525210A (en) Case for watch
US2553012A (en) Waterproof watchcase
GB1531081A (en) Method of manufacturing a reflecting mirror by electroplating
JPS6310236B2 (OSRAM)
JPS6440225A (en) Manufacture of metal mold for molding
US6798722B2 (en) Hand and timepiece using the hand