US3827231A - Wrist watch for digital indication - Google Patents

Wrist watch for digital indication Download PDF

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Publication number
US3827231A
US3827231A US00426682A US42668273A US3827231A US 3827231 A US3827231 A US 3827231A US 00426682 A US00426682 A US 00426682A US 42668273 A US42668273 A US 42668273A US 3827231 A US3827231 A US 3827231A
Authority
US
United States
Prior art keywords
disc
wrist watch
day
date
set forth
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
US00426682A
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English (en)
Inventor
Rolf Foerster
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.)
Bernhard Foerster GmbH
Original Assignee
Bernhard Foerster GmbH
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
Priority claimed from DE19732300694 external-priority patent/DE2300694C3/de
Application filed by Bernhard Foerster GmbH filed Critical Bernhard Foerster GmbH
Application granted granted Critical
Publication of US3827231A publication Critical patent/US3827231A/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
    • G04B19/00—Indicating the time by visual means
    • G04B19/20—Indicating by numbered bands, drums, discs, or sheets
    • G04B19/202—Indicating by numbered bands, drums, discs, or sheets by means of turning discs
    • 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
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped

Definitions

  • Digital indicating means comprise digit discs for indi- 30 F
  • a mounting ring is ermany spaced around said date ring.
  • a cross-member is carried by said mounting ring and overlies said date ring E3] and has a recess which is eccentric with respect to said d M R 5 58 date ring.
  • a day disc is accommodated in said recess le o are and serves to indicate the day of the week [56]
  • the second, minute, and hour discs are spaced increasing radial distances apart from the center and, if a date indication is provided for, are surrounded by a date ring consisting of a raised portion of a date disc.
  • These four discs are driven by the hand-driving mechanism like the hands of a conventional watch.
  • the hourindicating means may also be provided with a stepping mechanism.
  • the above-mentioned discs cover the watch movement like a dial so that the provision of a day disc for indicating the day of the week would increase the size of the overall arrangement and of the watch or would render the reading of the other indications more difiicult. Both results are undesired.
  • this object is accomplished according to the invention by the provision by a cross-member which extends over the date ring and consists preferably of a calendar plate, which is mounted on an outer ring and in which a day disc is eccentrically mounted.
  • the cross-member may consist of a calendar plate, which covers the watch movement provided with the hour and minute discs and the date ring and may be mounted on the top edge of the outer ring.
  • a cross-member consisting of a calendar plate eliminates the need for a separate dial for covering the movement, particularly in digital watches having a housing which is provided with a narrow viewing slot.
  • the digital dial may be mounted on the edge of the calendar plate and may preferably be provided with a central recess, in which a second disc or hand is mounted.
  • FIGS. 1 and 2 are, respectively, a partly sectional view showing the arrangement according to the invention and a top plan view showing the overall arrangement without a dial.
  • FIG. 3 is a transverse sectional view taken on line III- --III of FIG. 2 corresponding to the partly sectional view of FIG. 1.
  • FIGS. 4 and S are, respectively, a partly sectional view and a fragmentary top plan view showing another embodiment of an arrangement according to the invention. 2
  • a mounting plate 1 carries an outer ring la.
  • An hour wheel 4 is freely rotatably mounted on a cannon 3 and is provided with a starwheel 5, which is stepped forward by a pinion 6.
  • the hour disc 4 has a rim 7, which is upwardly offset to extend in the plane of a minute disc 8 and carries numerals.
  • the minute disc 8 is mounted on the cannon 3 for rotation therewith.
  • the outerring 1a carries a cross-member consisting of a calendar plate 9, which has an eccentric recess 10, in which a day disc 11 is mounted at 12.
  • the day disc 11 is driven by a toothed pin 13, which meshes with a reducer gear 14 (step ratio 1:24), which carries a stepping finger wheel 15.
  • the latter steps forward'the day disc 11.
  • the reducer gear 14 and the stepping finger wheel 15 are also mounted in the calendar plate 9. This arrangement is surrounded by a date ring 16, which extends into an annular step 17 of the calendar plate 9 and in the usual manner is raised from its mounting and drive means 18.
  • the calendar plate 9 is mounted by means of screws 19 on the top edge of the outer ring la and has apertures 20 for the indication of the hour and minute and an aperture 21 for the indication of the date.
  • the plate 9 is also provided with the above-mentioned recess 10 for the day disc 11 and the reducer gear train 14, 15.
  • the calendar plate 9 also accommodates a digital dial 22 having apertures 23 for the hour and minute indication, an aperture 24 for the date indication, and an aperture 25 for a separate day indication.
  • the dial 22 is provided with a central recess 26 for a second disc 27, which is mounted on a central second arbor 28, which is rotatably mounted in the cannon 3. Alternatively, a second hand may be provided, which is not shown.
  • FIGS. 4 and 5 show an arrangement in which a day disc 11a is mounted in an eccentric recess 10a of the calendar plate 9a and is driven at a step ratio of 1:1 from a date ring 16a by an engagement between teeth 12a and pins 13a.
  • the day disc 11a carries seven pins 12a, which are successively engaged by teeth 13a associated with respective dates.
  • the other parts are not provided with reference numbers because they are the same as in the first embodiment.
  • a wrist watch which comprises digital indicating means comprising digit discs for indicating the time of the day and a rotary date ring for indicating the date of the month,
  • a speed-reducing geared transmission having a toothed pin and a gear is connected between said hour disc and said day disc for driving the latter with a step ratio of 1:24 relative to said hour disc.
  • a wrist watch as set forth in claim 1 which comprises a transmission connected between said date ring and said day disc for driving the latter at a step ratio of 1:1 relative to said date ring, said transmission comprising an annular series of gear teeth rotatable with said date ring and associated with respective dates of the month, and an annular series of pins rotatable with said day disc and associated with respective days of the week.
  • said cross-member consists of a calendar plate.
  • said outer ring surrounds said movement and has a top edge, and said calendar plate is secured to said top edge and covers said movement and said digit discs.
  • mdlcatm means A wrist watch as set forth in claim 4 which 8.
  • said prises second-indicating means consist of a disc.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
US00426682A 1973-01-08 1973-12-12 Wrist watch for digital indication Expired - Lifetime US3827231A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732300694 DE2300694C3 (de) 1973-01-08 Armbanduhr mit Zeltanzeige vermittels Ziffernscheiben

Publications (1)

Publication Number Publication Date
US3827231A true US3827231A (en) 1974-08-06

Family

ID=5868498

Family Applications (1)

Application Number Title Priority Date Filing Date
US00426682A Expired - Lifetime US3827231A (en) 1973-01-08 1973-12-12 Wrist watch for digital indication

Country Status (4)

Country Link
US (1) US3827231A (enrdf_load_stackoverflow)
JP (1) JPS49103668A (enrdf_load_stackoverflow)
CH (2) CH772773A4 (enrdf_load_stackoverflow)
FR (1) FR2213525B3 (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879929A (en) * 1973-08-20 1975-04-29 Ebauchesfabrik Eta Ag Digital-display watch movement
RU2234724C2 (ru) * 2000-04-08 2004-08-20 Гласхюттер Уренбетриб Гмбх Календарное устройство для часового механизма
US20070097795A1 (en) * 2005-10-27 2007-05-03 Casio Computer Co., Ltd. Timepiece with a calendar function and/or a time setting function, and method of assembling the timepiece
US20140036640A1 (en) * 2012-07-31 2014-02-06 Casio Computer Co., Ltd. Information display device and analog electronic timepiece

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1997511A (en) * 1932-05-02 1935-04-09 Canepa Christopher Astronomical watch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1997511A (en) * 1932-05-02 1935-04-09 Canepa Christopher Astronomical watch

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879929A (en) * 1973-08-20 1975-04-29 Ebauchesfabrik Eta Ag Digital-display watch movement
RU2234724C2 (ru) * 2000-04-08 2004-08-20 Гласхюттер Уренбетриб Гмбх Календарное устройство для часового механизма
US20070097795A1 (en) * 2005-10-27 2007-05-03 Casio Computer Co., Ltd. Timepiece with a calendar function and/or a time setting function, and method of assembling the timepiece
US20140036640A1 (en) * 2012-07-31 2014-02-06 Casio Computer Co., Ltd. Information display device and analog electronic timepiece
US8971153B2 (en) * 2012-07-31 2015-03-03 Casio Computer Co., Ltd. Information display device and analog electronic timepiece

Also Published As

Publication number Publication date
JPS49103668A (enrdf_load_stackoverflow) 1974-10-01
FR2213525A1 (enrdf_load_stackoverflow) 1974-08-02
FR2213525B3 (enrdf_load_stackoverflow) 1976-06-04
CH582905B5 (enrdf_load_stackoverflow) 1976-12-15
DE2300694B2 (de) 1976-08-05
DE2300694A1 (de) 1974-07-25
CH772773A4 (enrdf_load_stackoverflow) 1976-07-15

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