US1083381A - Perpetual calendar. - Google Patents

Description

J VOGEL.

PERPETUAL CALENDAR. APPLICATION FILED JULY 26, 1913.

1,083,381. Patented Jan.6, 1914.

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JOHN VOGEL, OF ZEELAND, MICHIGAN.

PERPETUAL CALENDAR.

" Specification of Letters Patent.

Patented Jan. 6, 1914.

Application filed July 26. 1913. Serial No. 781,427.

To all whom it may concern:

Be it known that I, J OHN VocEL, citizen of the Netherlands, Europe, residing at Zeeland, in the county of Ottawa and State of Michigan, have invented certain new and useful Improvements in Perpetual Calendars, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to perpetual calendars and has for its primary object to pro vide a very simple device of this character whereby the week day in any year may be ascertained.

Another and more specific object of the invention resides in the provision of two relatively rotatable parts one of which is provided with an annular series of openings and an anular series of letters indicating a plurality of week days, the other of said parts having printed or otherwise delineated thereon the names of the months and the month numerals, and an indicator adapted for adjustment in said openings and with respect to which the desired month is adapted to be disposed whereby the month numer als will be properly disposed with relation to the letters indicating the Week days.

A further object of the invention is to produce a perpetual calendar which is simple in its construction, may be manufactured at small cost and is highly serviceable and etlicient in practical use.

With the above and other objects in view as will become apparent as the description proceeds, the invention consists of certain constructions, combinations and arrangements of the parts that I shall hereinafterfully describe and claim.

For a full understanding of the invention, reference is to be had'to the following description and accompanying drawing, in which Figure 1 is an elevation of a perpetual calendar embodying the preferred form of my invention; and Fig. 2 is a diametrical section thereof.

Referring in detail to the drawing, 5 designates a disk which may be constructed of heavy card board or other material, and 6 indicates a second disk of smaller diameter which is superposed upon said first named an opening 9 to receive a nail or hook whereby the device may be suspended from a wall. Upon the edge of the outer larger disk 5, a plurality of spaced finger pieces 10 are secured whereby said disk may be conveniently rotated.

Upon the upper surface of the disk 5 adjacent to its edge, an annular series of numerals indicated at 11 are printed or otherwise delineated, said numerals indicating the days of a plurality of weeks, and inwardly of said numerals and adjacent thereto this disk is. provided with an annular series of perforations 12 which correspond in number to the number of Week days. Upon the other or smaller disk 6, at the edge thereof, the names of the months are printed as indicated at 13, the same being arranged radially with respect tothe center I of the disk. This disk is also provided upon its edge with the month numerals 14 which are adapted to be disposed with relation tothe week days 11 upon the disk 5 as will be more fully disclosed in the following description.

15 designates an indicator or pointer to one end of which a pin 16 is fixed. This pointer, it will be noted, when arranged in position, is disposed over the surface of the disk 6. 1

As an example of the operation of the device, assuming that it is desired to ascertain the calendar for the month of February 1913, the pointer 0r indicator 15 is arranged upon the disk 6 in line with one of the letters F in the edge of said disk, indicating Friday. The pointer remains in this position for the entire year, the disk 6 being rotated with respect thereto to dispose any one of the months in line therewith. The numerals 14 upon the edge of the disk 6 will then be disposed opposite the proper week day designations upon the edge of the disk 5 and disclose all of the calendar days for the month of February. With each succeeding year, the pointer or indicator 15 is moved upon the disk 5 to a position in line with the next succeeding week day indicated thereon, the pin 16 being inserted through the proper opening 12. Upon the 0ccurrence of leap year, in which year a day is added to the month of February, on the first of March the pointer 15 is advanced and the pin 16 inserted through the next adjacent opening in the disk opposite the next succeeding day of the week,

From the foregoing, it is believed that the the device will be clearly and fully understood.

The invention is extremely simple, may

serviceable and convenient in use.

The blank space upon the face of the disk 6 may contain advertising matter 1f desired.

While I have shown and described the preferred construction and arrangement of the several parts, it will be understood that the invention is susceptible of considerable modification in the form, proportions and arrangements of the several elements without departing from the essential features or sacrificing any of the advantages thereof.

Having thus described the invention, what is claimed is:

1. A perpetual calendar comprising two disks of relatively different diameters and rotatable with respect to each other, the larger disk being provided adjacent its periphery with letters indicating the days of a plurality of weeks, the smaller disk having the names of the months and the numerals indicating the days of a month printed thereon, an indicating pointer, and means for removably attaching said pointer to the larger disk to extend inwardly from one of the week day indications thereon, and adapted to be disposed over the month indication on the smaller disk, whereby the month numerals on the latter disk and the week day designations on the larger disk are disposed in proper relation to disclose the calendar for the month indicated by said pointer.

2. A perpetual calendar comprising two superposed relatively rotatable disks of dif ferent diameters, the larger disk being provided upon its edge with spaced projections whereby the same may be rotated and having printed upon one surface an annular series of letters indicating the days of a plurality of weeks, said disks being further provided inwardly of said letters and 0pi posite to each of them with an opening, the

smaller disk having printed thereon the months of the year and the numerals indieating the days of an entire month, a pointer, and a pin on one end of said pointer for insertion in one of the openings in the larger disk and projecting inwardly from one of the week days indicated thereon over the smaller disk whereby the same may be located with respect to the month names upon said smaller disk, when the disks are rotated to position the month numerals upon said smaller disk in proper relation to the week days on the larger disk to disclose the calendar for the month indicated by said pointer.

3. A perpetual calendar comprising two disks of relatively different diameters rotatable with respect to each other, one of said disks being provided with letters indicating the days of a plurality of weeks, the other disk having the names of the months and numerals indicating the days of a month printed thereon, an indicating pointer, and means for rem'o-vably attaching said pointer to the first named disk opposite any one of the letters thereon, said disks being adapted to be relatively moved to dispose any one of the months on the second named disk in line with said pointer whereby the month numerals on said disk are properly related to the week day designations on the first named disk to disclose the calendar for the month indicated by said pointer.

In testimony whereof I hereunto aiiix my signature in the presence of two witnesses;

JOHN VOGIQL.

Witnesses THOMAS KEPPEL, B. NEERKEN.

flopiea of this patent may be obtained for five cents each, by addressing the Gommlssioner of Patents, Washington, D. C.

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