FR2494468A1 - Circular type perpetual calendar - uses four discs, one printed on both sides and two annular ones carrying days and dates - Google Patents
Circular type perpetual calendar - uses four discs, one printed on both sides and two annular ones carrying days and dates Download PDFInfo
- Publication number
- FR2494468A1 FR2494468A1 FR8024844A FR8024844A FR2494468A1 FR 2494468 A1 FR2494468 A1 FR 2494468A1 FR 8024844 A FR8024844 A FR 8024844A FR 8024844 A FR8024844 A FR 8024844A FR 2494468 A1 FR2494468 A1 FR 2494468A1
- Authority
- FR
- France
- Prior art keywords
- days
- discs
- printed
- perpetual calendar
- year
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09D—RAILWAY OR LIKE TIME OR FARE TABLES; PERPETUAL CALENDARS
- G09D3/00—Perpetual calendars
- G09D3/04—Perpetual calendars wherein members bearing the indicia are movably mounted in the calendar
- G09D3/06—Perpetual calendars wherein members bearing the indicia are movably mounted in the calendar with rotatable members
- G09D3/08—Perpetual calendars wherein members bearing the indicia are movably mounted in the calendar with rotatable members of disc form
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Electric Clocks (AREA)
Abstract
Description
La présente invention concerne les calendriers perpé tuels, procédés permettant de déterminer le jour de la semaine correspondant aune date donnée et inversement. The present invention relates to perpetual calendars, methods for determining the day of the week corresponding to a given date and vice versa.
Les calendriers perpétuels se présentent sous forme de tableaux ou de règles à calculs, d'un emploi assez commode, mais souvent fastidieux ; par exemple, pour établir le calendrier d'une année entière, l'utilisateur doit répéter les calculs pour chaque jour ou doit écrire lui-même la succession des jours de l'année. Perpetual calendars are presented in the form of tables or slide rules, which are fairly convenient, but often tedious; for example, to establish the calendar for an entire year, the user must repeat the calculations for each day or must write the succession of days of the year himself.
Le calendrier perpétuel selon l'invention permet d'évi- ter ces inconvénients. I1 est basé sur la constatation suivante : soit A un mois de l'année et B le mois suivant soit J le premier jour de A (Lundi par exemple) et K le premier jour de B ;
ainsi, si A a 28 jours, on a K = J (Lundi)
n 29 " K = J+1 (Mardi)
30 in K = J+2 (Mercredi) " 31 " K = J+3 (Jeudi). The perpetual calendar according to the invention makes it possible to avoid these drawbacks. It is based on the following observation: either A a month in the year and B the following month or D the first day of A (Monday for example) and K the first day of B;
so, if A has 28 days, we have K = J (Monday)
n 29 "K = D + 1 (Tuesday)
30 in K = D + 2 (Wednesday) "31" K = D + 3 (Thursday).
D'oh, Si le Premier Janvier est un jour J, on obtient le tableau suivant
Année Bissextile : Année non Bissextile er Janvier : J . J
n Février : 5+3 . J+3
n Mars : J+4 J+3 Avril : J : J-l " Mai : J+2 : J+1
n Juin : J-2 : J+4
n Juillet : J : J-1
n Août : J+3 . J+2
n Septèmbre : J-1 : J-2
Octobre : J+1 : J
" Novembre : J+4 : J+3
Décembre :J-1 : J-2
Pour le' calendrier perpétue; selon l'invention, une année est donc caractérisée
- par le jour de la semaine de son Premier Janvier,
- par le fait qu'elle est ou non bissextile.So, if January 1st is a D-day, we get the following table
Leap Year: Non Leap Year and January: J. J
n February: 5 + 3. D + 3
n March: D + 4 D + 3 April: D: Jl "May: D + 2: D + 1
n June: D-2: D + 4
n July: D: D-1
n August: D + 3. D + 2
n Septèmbre: D-1: D-2
October: D + 1: D
"November: D + 4: D + 3
December: D-1: D-2
For the 'calendar perpetuates; according to the invention, a year is therefore characterized
- by the day of the week of its First January,
- whether it is a leap or not.
Ces deux caractéristiques sont contenues simultanément dans
un tableau circulaire en couleurs. Reportées sur le calen
drier selon l'invention, elles fournissent instantanément
le détail des jours Se la semaine de chacun des mois de
l'année considérée.These two characteristics are contained simultaneously in
a circular painting in colors. Carried over the calen
cry according to the invention they instantly provide
the details of the days Se the week of each month
the year considered.
Le Le tableau circulaire est lui-même basé sur la constatation
suivante : soit A une année et B l'année suivante ; soit J
le premier jour de A et K le premier jour de 3 ;
ainsi, K = J+1 si A est non bissextile
K = J+2 si A est bissextile.
The circular table is itself based on the observation
following: either A one year and B the following year; either J
the first day of A and K the first day of 3;
thus, K = J + 1 if A is non-leap
K = J + 2 if A is a leap.
Les années bissextiles sont fixées par les règles des calen
driers Julien ou Grégorien selon les époques.Leap years are set by calen rules
driers Julien or Gregorian depending on the period.
Les dessins annexés représentent les 4 disques consti
tuant le calendrier perpétuel et ae meame calendrier selon
l'invention, une fois assemblé. Le disque de la figure 1 b
est le verso du disque de la figure 1 a.The attached drawings represent the 4 discs made up
killing the perpetual calendar and the same calendar according to
the invention, once assembled. The disc of figure 1 b
is the back of the disc in Figure 1a.
Etablissons par exemple le calendrier de l'année 1956. Let us establish for example the calendar for the year 1956.
Dans le tableau circulaire de la figure 1 b
- la couleur de 56 indique que 1956
était une année bissextile,
- l'initiale du secteur contenant
56 indique que le Premier Janvier 1956 était un Dimanche.In the circular table of figure 1 b
- the color of 56 indicates that 1956
was a leap year,
- the initial of the containing sector
56 indicates that January 1, 1956 was a Sunday.
I1 faut donc : - placer le secteur marqué "Fevr" du disque
de la figure 2 au-dessus de l'indication "291 jours du
disque de la figure 1 a - - placer la patte du disque de la figure 3
dans le secteur noté "D b" (b pour bissextile) du disque de
la figure 1 a.It is therefore necessary: - to place the sector marked "Feb" on the disc
in Figure 2 above the indication "291 days from
disc of figure 1 a - - place the tab of the disc of figure 3
in the sector noted "D b" (b for leap) of the disc of
Figure 1a.
Il suffit alors de placer le numéro 1 du disque de la
figure 4 dans le secteur du mois choisi pour obtenir le détail des jours de ce mois sur sur la figure 5, on observe par exemple que le 20 Août 1956 était un Lundi.It is then enough to place the number 1 of the disc of the
figure 4 in the sector of the month chosen to obtain the detail of the days of this month on on figure 5, one observes for example that August 20, 1956 was a Monday.
Le calendrier, objet de l'invention, peut être utilisé comme calendrier ordinaire ; il présente l'avantage d'être réalisable en n'importe quelles dimensions. The calendar, object of the invention, can be used as an ordinary calendar; it has the advantage of being achievable in any size.
En tant que calendrier perpétuel pour'la recherche de dates, l'adjonction de petits tableaux circulaires tel celui de la figure 1 b lui donne une capacité infinie, et cela en très peu de place. As a perpetual calendar for the search for dates, the addition of small circular tables such as that of Figure 1b gives it an infinite capacity, and this in very little space.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8024844A FR2494468A1 (en) | 1980-11-20 | 1980-11-20 | Circular type perpetual calendar - uses four discs, one printed on both sides and two annular ones carrying days and dates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8024844A FR2494468A1 (en) | 1980-11-20 | 1980-11-20 | Circular type perpetual calendar - uses four discs, one printed on both sides and two annular ones carrying days and dates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2494468A1 true FR2494468A1 (en) | 1982-05-21 |
Family
ID=9248264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8024844A Pending FR2494468A1 (en) | 1980-11-20 | 1980-11-20 | Circular type perpetual calendar - uses four discs, one printed on both sides and two annular ones carrying days and dates |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2494468A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0264549A2 (en) * | 1986-10-23 | 1988-04-27 | Ralph Haber Hoyeck | Perpetual blind calendars |
| CN110308638A (en) * | 2019-07-05 | 2019-10-08 | 卢宇 | Perpetual calendar wrist-watch and watch dial setting method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2507697A (en) * | 1950-05-16 | Calendar | ||
| US2532984A (en) * | 1950-12-05 | Perpetual calendar | ||
| FR1439155A (en) * | 1965-04-06 | 1966-05-20 | Perpetual calendar direct reading calculator | |
| FR1476835A (en) * | 1966-03-03 | 1967-04-14 | Julian or Gregorian perpetual calendar | |
| US3352044A (en) * | 1965-09-07 | 1967-11-14 | Douglas L Chasteen | Multi-year calendar |
-
1980
- 1980-11-20 FR FR8024844A patent/FR2494468A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2507697A (en) * | 1950-05-16 | Calendar | ||
| US2532984A (en) * | 1950-12-05 | Perpetual calendar | ||
| FR1439155A (en) * | 1965-04-06 | 1966-05-20 | Perpetual calendar direct reading calculator | |
| US3352044A (en) * | 1965-09-07 | 1967-11-14 | Douglas L Chasteen | Multi-year calendar |
| FR1476835A (en) * | 1966-03-03 | 1967-04-14 | Julian or Gregorian perpetual calendar |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0264549A2 (en) * | 1986-10-23 | 1988-04-27 | Ralph Haber Hoyeck | Perpetual blind calendars |
| EP0264549A3 (en) * | 1986-10-23 | 1989-07-19 | Ralph Haber Hoyeck | Perpetual blind calendars |
| CN110308638A (en) * | 2019-07-05 | 2019-10-08 | 卢宇 | Perpetual calendar wrist-watch and watch dial setting method |
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