US855078A - Perpetual calendar. - Google Patents

Description

PATENTED MAY 28, 1907.

H. V. VOGT. PERPETUAL GALENDAR. APPLIOATION FILED SEPT. 12, 190e.

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1 .mrnmm m $01.41 l R E...v. DMW .LN s vAEF m ULHH ATc E C N u 0T PVIMH RL n EHVIW TNG P N A m O N Rn Mmm B THE CALENDE FOR PRESENTMONTH 0R FOR ANY FUTURE CENTURY ANY PAST MONTH BEGINNIN /N VE /V 70H No. 855,078. PATENTED M AY 28, 1907.

l H. V. VOGT.

PERPETUAL CALENDAR. APPLIoATIoN FILED SEPT. 12, 1906.

WIT/visse@ l v 4 ws/wan 110.855.078. PATBNTED MAY 2a. 1907.

H. V. voGT. PBRPBTUAL CALENDAR.

APPLICATION FILED SEPT. 12, 1906.

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PE R PE TUAL MONTHLY-CALENm-:R

BEGINNING/ WITH THE HRISTI^II ERA.

PERPETUA L MONTHLY-CALENDER FOR ANY MUNTH FOREVER BEGINNING WITH THE CHRISTIAN ERA.

UNITED STATES PATENT OFFICE.

Specication of Letters Patent.

' 'Patented may as, 1907.

Application mea Septante: 12, 190e. serial No. 334,206.

, calendar having a fixed part and a movable part and data arranged on bzoth parts in such manner that by the mampulation of the movable part so as to register certainrdata thereon with certain data on the iixed part, the calendar may be set for any given month of any given year from the beginning of the Christian era to the end of time.

.In the drawings: Figure 1 is a'ront elevation of the card forming the fixed part of the calendar; Fig. 2'is a similar view of the revoluble disk forming the movable part of the calendar; Figs. 3 and 4 are. similar views of the calendar, partly broken away, illustrating the method of using the same.

' Near the center of the card X is a circle a, to the center c of which is, ivotally attached the revoluble disk Y. T e card X is rovided, near its upper end, and outside o the circle a, with a segmental oriiice b above which are the names of the week; Below the oriiice b, and also outside of the circle a, is another se ental orifice d subtending arc equal to tlt subtended by oriiice b, both arcs being taken from the center c. At the side of oriiice d is the word Months Above the oriiice d are certain letters, A, G,

' F, E, D, C, B, known as month key-letletters. Anther segmental oriice e, outters. At the side of thel space containing these letters A.are the words, Month keyside ofr the circle a, subtends an arc diii'erent from the arcs subtended by orifices b, andd and at a distance from the radius diierent romthat atwhich `ol'iiices bA and d arelocated. At the sid of the orifice e are the words Dominical key-letter.

Within the circle a is formed another stiegmental orifice j; which subte'nds an arc ferent from vthe arcssubtended by the other orifices. A t the side of oriiice f of the circle is divided'into three' `segmental s aces, g, h and -'i,1ocated at respectively different distances. from the center of the circle. The yspace- ;g contains words company/.ing drawings, which form a part of all,

the segment 'Old style Julian centuries. The spaceh contains the words New style Gregorian. The space i contains the Words Perpetual key. Above the oriiice f are the words Century table. In the unoriiiced upper half of the circle a are placed words indicatin the character of the calendar.

elow the circle a and the oriiicef therein is arranged a year table lc divided into seven vertical columns, the year table containing the years of any given century properly arranged .in the several columns. The leap years are indicated by a star.

On one side of the year table is aspace containing directions .for setting the calendar. On the other side of the ear table is a space containing directions perpetual key-numbers.

The revoluble disk Y is provided with four concentric spaces m, n, o and p located at diierent distances from the center of the disk and adapted to register respectively with the .orifices l), e, d and jl The space m is provided with spaces having numbers indicating the days of the or the lmonth, thenumbers being divided into radial columns of either four or ve numbers, and seven of the. columns be adapted, at zany. given position of the dlilsl, toregi'ster with the oriiice b and respectively with the days of the week above the orifice b. `For convenience, the disk Y is notched between each two adjacent columns.

The space mis provided with sub-spaces containing letters A, B, C, D, E, F and G, which I call Dominical of these lettersjs adapted, at any given position of the disk, to iice e.

The space o is rovided with sub-spaces in which are properlp months, two of the spaces containing the names February and January associated with stars indicating that the months referred to are those occurring in leap years.

Seven of the sub-spaces of space o are adapted, at any -The space p is rovided with radial columns of igures in 'eating the century numbers' from 1 to 22 inclusive. The space p' is also divided into three concentric sub-spacesv p1 p2 and p3. Seven vof these columns are adapted, at anygiven position of the disk, yto register with the seven columns of the year key-letters. One

register with the ori-A Y ven `position ofthe disk Y, to'` registerwit the orifice d and respectively withthe month key-letters above the oriiice.

y arranged the names of the IOO IIO

century number must'befound in sub-space I5 P l. If the monthly calendar wanted is accordingto the new style Gregorian calendar,

"then the desired century number must be foundin sub-space 2. When the disk is turned to the descri ed position a certain Dominical key-letter contained in one of the sub-spaces of s ace n will show through orifice e. The dis r is then turned until the desired month in one of the sub-spaces of space o registers witha monthkey-letter corres onding to the said Dominical key letter.

his gives a correct calendar for the particular month of the particular year desired.

For example, if it is desired to provide a monthly calendar for December, 1906, the disk is turned, as indicated in Fig. 3, until the radial column containing the number 19 in sub-space p2 of the disk registers with the vertical column containing 06 in the ear table c. As Will be seen, the Dominical eyletter in thisposition of the disk is G. The disk is then turned until the sub-space of space o containing the abbreviation Dec registers with themonth key-letter G, as

shownl in Fig. 4. This gives the correct calendar for'December, 1906.

ln certain instances it may happen that when the disk is moved tol cause the century number to register with the year'number, the disk will be in such position that the desired month on the disk registers with the monthkey letter corresponding to the Dominical key-letter. ln such a case, a second movement ofthe disk is unnecessary. or example, if'it desired to provide a calendar for Uctober, 1906, and the disk is turned to cause the century number to register with the ear number; as before described,and as i lustrated in Fig. 3, thecharacter Oct on the disk registers with the month-key letter G corresponding to the Dominical key-letter G, thus providing the proper calendar for October, 1906 without a second movement of the disk. A 1f' thecalendar for `any particular month of any year later than 22229 is desired, the cen- -tury should be divided by 4, the remainder (whichwill be either 0, 1, 2 0113) indicating the key number in space p3 which should be registered with the column, in the year table, containing the desired year. y this means,

seams the proper Dominical key-letter is ascertained.

It will be understood that the year 00 in any given century is'always a leap year when combined with a Julian century, but when making a combination with a Gregorian century it is a leap year only when divisible by 400. The year 00 in the year table is associated with two stars, which indicates that any given year in the Gregorian calendar ending in 00 is a leap year only when its Dominical key-letter is A, as this combination can only register the key-letter A but once in 400 years.

Having now fully described my invention, what I claim and desire to protect by Letters Patent is:

1. A perpetual calendar comprising a fixed .card having four orifices and a movable card having spaces containing respectively figures indicating the days of a month, Dominical key-letters, characters indicating the months of a year, and a table of century numbers, said spaces registering with said orifices respectively, said disk also containing a year table adjacent to the orifice with which said century table registers, and a series of month key-letters adjacent to the orifice registering with the space containing said month characters.

2. A perpetual calendar comprising a fixed c ard having an orifice and characters indicating the da s of the week adjacent thereto, a second ori ce and monthkey-letters adjacent thereto, a third orifice and at least two spaces adjacent thereto, a fourth orifice, and a table containing year numbers; and a movable card having a s ace containing figures indicating the da s ofp the month and adapted to register with t e rst orifice, a second space containing characters .indicating the months of a year adapted to register with the second orifice, a third space having two sub-spaces containin century numbers adapted to register with t e third orifice, the year table, and respectively with the said two spaces of the fixed card, and a fourth space containing Dominical ke -letters adapted to register with the fourt orifice.

3. A perpetual calendar comprisin a fixed card having four orifices and a movale card having spaces containing respectively figures indicating the days of a month, Dominical key-letters, characters indicating the months of a year, and a table of century numbers and .perpetual ke -numbers, said spaces registerloo los,

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l second orifice and month key-letters adjacent thereto, a third orifice and three spaces adjacent thereto, a fourth orifice, and a table containing year numbers; and a movable card having a space containing figures indieating the days of the month and adapted to register with the first orifice, a secondspace containing characters indicating the months of a year adapted -to register with the second orifice, a third space, adapted to register with the third orifice, having three sub-spaces containing two sets of century. numbers and perpetual key-numbers all adapted to register with the year table and also adapted to register respectively with the three s aces of the fixed card adjacent to the third)orifice, and a fourth space containing Dominical key letters adapted to register with the fourth orifice. V

5. A per etual calendar comprising a revoluble disk aving four concentric spaces'ar ranged about a common center, one space containing radial columns of figures indicating the days of a month, another space containing a series of Dominical key-letters, another space containing charactersindicating the months of a year, and another space containing a table of numbers indicating centuries; and a fixed card to which the revoluble disk is pivoted at said common center, said fixed card having four orifices located at radial distances from said common center corresponding to the radial distance from said common center of said four spaces so as to respectively register therewith, said fixed card also having a year table adjacent to the orifice registering with the space containing the century table, and month key-letters adjacent to the orifice registering with the space containing the month characters.

6. A monthly calendar comprising a fixed card and a revolublel disk pivoted thereto, said disk having four spaces concentric with said pivot point, one space being divided into sub-spaces containing radialcolumns of figures representing the days of a month, a second space being divided into sub-s aces containing Dominical key-letters, a t iird space being divided into sub-spaces containing characters indicating the months of a year, and a fourth space containing radial columns of figures indicating century numbers, said fixed card having an orifice adapted to register with the first space of the disk and sub stantially corresponding in length with the Vlengthofl seven sub-spaces of the first space,

a second orifice adapted to register with the second space of the disk and substantially corresponding in length With the length of one sub-space of the secondL space, a third orifice adapted to register with the third space of the disk and substantially correspondingin length Withthe length of seven sub-spaces of the third space, and a fourth orifice ada ted to register with the fourth space of t e disk and substantially correspending in len th with the Width of seven columns of the ourth space, said fixed card also havin seven columns indicating year numbers a apted to register with seven successive columns of the fourth space of the disk, and seven spaces containing seven month key-letters adapted to register with seven successive sub-spaces of the third space of the disk.

7. A perpetual calendar comprising a movable card containing columns of figuresindi eating century numbers, a fixed card containmg columns of figures lndlcatmg year numbers, the movable card'being adapted to-bemoved to cause one of the century columns thereon to re ister with one of the year columns on the ed card, there being Dominical key-letters one foreach combination of year column and century column thus adapted to be registered, means indicating the proper key-letter when said combination of year column and century column is thus registered, the fixed card containing a series of month key-letters corresponding to said Dominical key-letters, and the movable card containin a series of characters indicating the Inont s of theyear, said movable card being movable to register one of said month characters with one of said month'key-letters the fixed card containing a series of characters indicating the days of the Week and the movable card containing a series of columns of figures indicating the days of the month, seven of the last' named columns registering respectively with seven of the last named characters when the movable card is moved to register its month characters with one of the month keyfletters of the fixed card.

ln testimony of which invention, I have hereunto set my hand, at Philadelphia, on this 10th day of September, 1906.

yHARRY V. VOGT.

lNitnesses I IUGH BmTToN, JNO. VV ALLAcE.

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