US3901017A - Calendar arrangement for a timepiece - Google Patents

Calendar arrangement for a timepiece Download PDF

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Publication number
US3901017A
US3901017A US505379A US50537974A US3901017A US 3901017 A US3901017 A US 3901017A US 505379 A US505379 A US 505379A US 50537974 A US50537974 A US 50537974A US 3901017 A US3901017 A US 3901017A
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US
United States
Prior art keywords
digits
viewing window
calendar
arrangement
timepiece
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
US505379A
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English (en)
Inventor
Bruno Erni
Pierre-Andre Beguin
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.)
SSIH Management Services SA
Original Assignee
SSIH Management Services SA
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 SSIH Management Services SA filed Critical SSIH Management Services SA
Application granted granted Critical
Publication of US3901017A publication Critical patent/US3901017A/en
Assigned to LFE CORPORATION reassignment LFE CORPORATION RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: MARINE MIDLAND BANK, N.A.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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

Definitions

  • a timepiece calendar arrangement includes a single calendar disc having digits arranged around its periphery, and a viewing window arranged to mask all digits other than those corresponding to a given date. The digits are interlaced and the viewing window is formed from two separated portions, both portions being located away from a principal diametral axis of the timepiece.
  • the present invention concerns a calendar arrangement for a timepiece which affords larger numbers and thus enhanced visibility.
  • Modern timepieces are generally provided with a disc bearing the numbers of the days of the month from I 31 and the arrangement is such that the disc bearing the numbers is placed under the timepiece dial and is stepped once every 24 hours in order to permit reading of the current date through a window located in the dial.
  • the windows are provided at locations such as 12 oclock, 3 o'clock or 6 oclock for convenience in reading and are located approximately at the outer circumference of the watch dial in order to enable the digits to be made as large as possible.
  • the present calendar arrangement utilizes a single disc which can be produced at a cost no greater than present single disc calendars and provides greatly enhanced visibility. This is achieved by a novel arrangement of the digits on the disc, by a relocation of the viewing window and by dividing the viewing window into two separated portions.
  • the invention accordingly provides a calendar arrangement in a timepiece comprising, in combination, a single calendar disc having digits arranged around its periphery and a viewing window arranged to mask all digits other than those corresponding to a given date, characterized in that the digits are interlaced and the viewing window is formed from two separated portions, such portions being located in a position away from a principal diametral axis of the timepiece.
  • FIG. 1 illustrates a calendar timepiece according to the invention.
  • FIG. 2 illustrates the details of the calendar disc to be used in the invention.
  • FIG. 3 is a graphical showing of how the position and dimensions of the viewing windows may be chosen to ensure maximum visibility.
  • FIG. 4 is a graph showing the relations between the width of the window, the height thereof and the angular location of the inner window as shown in FIG. 3.
  • FIG. 5 and 6 show embodiments ofalternate possible lay-outs for the calendar disc.
  • FIG. 7 is a drawing illustrating the derivation of the equations for certain dimensions.
  • the calendar timepiece illustrated in FIG. 1 may be conventional in all respects other than the calendar itself.
  • the normal single viewing window which might in other calendar watches be located at 12 oclock, 3 oclock or 6 oclock has been split into into two portions and is now located at about 4
  • the date shown is the 30th of the month which will be visible as separated numbers in the two separated window portions 1 and 2.
  • the separation 3 serves the purpose of concealing figures shown in dotted outlines.
  • the preceding date of 29th and the succeeding date of 31st are thus completely hidden from view, and it will be appreciated that without a separation such as 3 between windows 1 and 2, great confusion would result.
  • the particular arrangement of the digits requires that they be interlaced as shown for example in FIG. 2.
  • the precise orientation of the digits will in all cases depend on the precise location chosen for the viewing windows.
  • the digits intended to be viewed at any one time would be arranged on a chord of the calendar disc.
  • Each figure instead of being either perpendicular to a radius as would be the case for a viewing window located at 3 oclock or parallel to the radius as would be the case for a viewing window located at 12 oclock or 6 oclock, is in fact arranged at an angle to the radius between 0 and and the angle of course depends on the precise location of the viewing windows.
  • the height h of the windows may be determined as follows to g/R Sin a g g therefore g R Sin a.
  • the factor 0.6 if varied will cause less than a 1% variation in the value of d.
  • the value of d as calculated above is a minimum value andjt may be increased provided the overall diameter of the calendar disc is also increased.
  • the principal diametral axes of the watch correspond to those passing respectively from 3 oclock to 9 oclock and from 12 oclock to 6 oclock.
  • the first quadrant is between 3 oclock and 12 oclock, the second quadrant between 12 oclock and 9 oclock, the third quadrant between 9 oclock and 6 oclock and the fourth quadrant between 6 oclock and 3 oclock.
  • Aesthetic and practical considerations may combine in deciding which of the four quadrants the viewing windows should be located in. Location of these windows in the fourth quadrant as shown in FIG. 1 is not intended to be limiting in this respect.
  • the digits may be slightly distorted in form, the sides of the separated portions of the viewing window will be curvilinear and the separation between the two portions 3 will be almost exactly equal to the width of one digit.
  • the digits are still more distorted, the sides of the separated portions of the viewing window are likewise curvilinear in form and here the separation 3 between the digits is equal approximately to the width of two digits.
  • Calendar arrangement in a timepiece comprising, in combination, a single calendar disc having digits arranged around its periphery and a viewing window arranged to mask all digits other than those corresponding to a given date, characterized in that the digits are interlaced and the viewing window is formed from two separated portions, such portions being located in a position away from a principal diametral axis of the timepiece.
  • Calendar arrangement as in claim 1 characterized in that the viewing window and digits are oriented so that the digits in viewing position are centered along a single chord of the disc parallel to the principal diametral axis passing through 3 oclock and 9 oclock.
  • Calendar arrangement as in claim 1 characterized in that the viewing window and digits are orientated so that each digit in the viewing position is centered on an individual chord of the disc parallel to the principal diametral axis passing through 3 oclock and 9 oclock.
  • Calendar arrangement as in claim 1 characterized in that each of the separated portions of the viewing window is formed with rectilinear sides.
  • Calendar arrangement as in claim 4 characterized in that the distance between the two separated portions of the viewing window is slightly greater than the width of a digit.
  • Calendar arrangement as in claim 1 characterized in that each of the separated portions of the viewing window is formed with curvilinear sides.
  • the distance between the two separated portions of the viewing window is approximately equal to the width of two digits.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Optical Measuring Cells (AREA)
US505379A 1973-09-24 1974-09-12 Calendar arrangement for a timepiece Expired - Lifetime US3901017A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4458273A GB1450405A (en) 1973-09-24 1973-09-24 Calendar timepiece

Publications (1)

Publication Number Publication Date
US3901017A true US3901017A (en) 1975-08-26

Family

ID=10433958

Family Applications (1)

Application Number Title Priority Date Filing Date
US505379A Expired - Lifetime US3901017A (en) 1973-09-24 1974-09-12 Calendar arrangement for a timepiece

Country Status (4)

Country Link
US (1) US3901017A (cs)
JP (1) JPS5412346B2 (cs)
CH (2) CH571735B5 (cs)
GB (1) GB1450405A (cs)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4632569A (en) * 1984-12-14 1986-12-30 Montres Rado S.A. Timepiece with calendar
US5218578A (en) * 1991-10-17 1993-06-08 Gianni Bulgari S.P.A. Display device in or for use in a timepiece
US7120091B1 (en) * 2005-08-25 2006-10-10 Timex Group B.V. Electronic device with calendar function
US20070053240A1 (en) * 2005-09-07 2007-03-08 Lizzi Ronald S Electronic device with scheduled occurrence indicators
USD830217S1 (en) * 2016-07-18 2018-10-09 Samsung Electronics Co., Ltd. Portable electronic device
USD913127S1 (en) * 2018-12-03 2021-03-16 Turlen Holding Sa Watch

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712043A (en) * 1971-11-03 1973-01-23 Timex Corp Day-date timepiece with multiple display of dates and days of week

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712043A (en) * 1971-11-03 1973-01-23 Timex Corp Day-date timepiece with multiple display of dates and days of week

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4632569A (en) * 1984-12-14 1986-12-30 Montres Rado S.A. Timepiece with calendar
US5218578A (en) * 1991-10-17 1993-06-08 Gianni Bulgari S.P.A. Display device in or for use in a timepiece
US7120091B1 (en) * 2005-08-25 2006-10-10 Timex Group B.V. Electronic device with calendar function
US20070053240A1 (en) * 2005-09-07 2007-03-08 Lizzi Ronald S Electronic device with scheduled occurrence indicators
US7423936B2 (en) * 2005-09-07 2008-09-09 Timex Group B.V. Electronic device with scheduled occurrence indicators
USD830217S1 (en) * 2016-07-18 2018-10-09 Samsung Electronics Co., Ltd. Portable electronic device
USD913127S1 (en) * 2018-12-03 2021-03-16 Turlen Holding Sa Watch
USD913125S1 (en) * 2018-12-03 2021-03-16 Turlen Holding Sa Watch
USD913124S1 (en) * 2018-12-03 2021-03-16 Turlen Holding Sa Watch

Also Published As

Publication number Publication date
GB1450405A (en) 1976-09-22
CH571735B5 (cs) 1976-01-15
CH1271774A4 (cs) 1975-07-31
JPS5078358A (cs) 1975-06-26
JPS5412346B2 (cs) 1979-05-22

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Legal Events

Date Code Title Description
AS Assignment

Owner name: LFE CORPORATION

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:MARINE MIDLAND BANK, N.A.;REEL/FRAME:005041/0045

Effective date: 19880223