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Publication numberUS2244514 A
Publication typeGrant
Publication dateJun 3, 1941
Filing dateJul 25, 1939
Priority dateJul 25, 1939
Publication numberUS 2244514 A, US 2244514A, US-A-2244514, US2244514 A, US2244514A
InventorsJohn Cwickalo
Original AssigneeJohn Cwickalo
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Computing device for menstruation cycles
US 2244514 A
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Description  (OCR text may contain errors)

June 3, 1941;"

l 5 DMII (NCL-Lil' J. CWIEKALO COMPUTING DEVICE FOR IENSTRUATION CYCLES Filed July 25, 1939 Patented June 3, 1941 UNITED STATES PATENT OFFICE COMPUTING DEVICE FOR MENSTRUATION CYCLES 2 Claims.

This invention relates to new and useful improvements in a computing and recording device for sterile and fertile sex periods.

It is believed by many members of the medical profession that every Woman goes through certain sterile and fertile periods during each menstrual cycle, and it is the purpose of this invention to provide a device for computing and recording these periods.

It is the object of this invention to provide a at body having an opening adjacent one end thereof, and upon which a movable member is rotatively mounted and provided with areas in a manner to be selectively alignable with said opening.

Still further it is proposed to imprint each of the areas with the name of a different month in the manner to permit 'the name of the month in which the computation is being made to be aligned with the opening.

Another object of this invention is the provision of a circular area on the front of said flat body and imprinted with 31 equal spaces and consecutively numbered from 1 to 31 to represent the 31 days of the month.

Still further it is proposed to provide a disc rotatively supported on the front face of the body coaxially with said circular area and divided off into equal spaces consecutively numbered from 1 to 31 in a manner to be aligned with the 31 equal spaces of said circular area.

Another object of this invention is the provision of areas on the disc adjacent the equal spaces to indicate the days of the sterile and fertile periods of a menstrual cycle of a certain number of days.

Still further it is proposed to provide a means for releasably mounting said disc upon said at body in a manner to permit discs having menstrual cycles oi a different number of days to be mounted upon said flat body.

Another object of this invention is the construction of a device as described which is simple and durable and which may be manufactured and sold at a reasonable cost.V

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawing, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawing forming a material part `of this disclosure- Fig. 1 is an elevational view of the computing and recording device constructed in accordance with this invention.

Fig. 2 is a vertical sectional View taken on the line 2 2 of Fig. 1.

Fig. 3 is an elevational view of a different disc adapted to be used in connection with the device as shown in Fig. 1.

The computing and recording device for sterile and fertile periods, according to this invention, includes a flat body I0 formed of cardboard or other similar material. This flat body is formed adjacent its top with an opening Illa.

A member II, of circular contour, is movably mounted behind the at body III adjacent the top end thereof. Particularly, this member II is rotatively supported by means of a rivet I2. This rivet I2 extends through the flat body I0 and the member II. The member II is divided off into a plurality of areas II, namely twelve, each of which is imprinted with the name of a different month I3. The names of the months I3 are so arranged upon the face of the member II that they will be selectively aligned with the opening I0 formed in the flat body I0 as the member is rotated about the rivet I2.

'I'he flat body Ill is further formed with a circular area I4 subdivided into 3l equal areas I4. Each of the equal areas I4 is consecutively numbered from l to 31 to represent the days of the month.

A disc I5 is rotatively supported upon the front face of the flat body I0 coaxially of the circular area I4; The disc I5 has an outer area divided off into 31 equal spaces I5, The equal spaces I5 are also consecutively numbered from 1 to 31 and are adapted to be aligned with the equal spaces I4 of the circular1 area I4. The disc I5 also has areas adjacent the equal areas I5. The area I5b adjacent the equal areas I5 numbered from l to 9, in Fig. 1, is marked the Sterile period. Similarly the area I5, adjacent the equal areas I5 numbered from 10 to 17, is marked the Fertile period. The area I5d, adjacent the equal areas I5 numbered from 18, to 28 is marked the Sterile period. The equal area I5 marked with the number 29 is indicated as being the first day of the next menstruation. This disc is to be used in connection with a menstruation cycle consisting of 28 days.

In Fig. 3 a disc I5' is shown which is similar to the disc I5 shown in Fig. 1 except that it is imprinted to be used in connection with a menstruation cycle consisting of 23 days instead of 28 days. This disc I5 is subdivided into a plurality of equal areas I5 consecutively numbered from 1 to 31. This disc is further formed with an area I5bb, adjacent the equal areas numbered from 1 to 4, which is marked the Sterile period. An area I5, adjacent the equal areas numbered from 5 to 12, is marked the Fertile period, and an area Idd, adjacent the equal areas marked from 1 3 to 23, is marked the Sterile period. The equal area marked 24 is indicated as being the start of the next menstruation period. While only two discs are shown it is to be understood that the device is to be provided with discs properly imprinted for all of the possible menstruation cycles of different lengths.

The disc I5 is mounted upon the flat body le in such a manner that it may be interchanged with the disc I5 or any of the other discs which might be supplied to cause the menstruation cycle of the proper number of days to be placed upon the flat body I to meet the particular needs of the user of the device. The disc I is rotatively supported by means of a headed stud I6 which extends through the body I0 and the disc I5. The stud I6 has a head Ilia lying immediately adjacent the front face of the disc I5 and a head Itib in the back of the flat body II). A spring Il is coaxially mounted upon the stud I6 and operates between the back face of the dat body I0 and the adjacent face of the head 5b for urging the head IlitL into face contact with the disc I5.

Immediately adjacent the hole in` the disc I5 through which the stud I6 extends the disc is formed with a bayonet shaped tab I8. This tab I3 has a portion i8@ by which it is integrally formed with the disc I5 and along which it is adapted to be bent out of the plane of the disc I5. The disc I5' is formed with a tab I8 similar to the disc I5.

To inetrchange the discs it is merely necessary to pull outwards on the head Iiia of the stud I5 to space this head from the adjacent face of the disc I5 against the holding action of the spring I1. Then the tab I8 is bent out of the plane of the disc I5 forming a space permitting the disc i5 to be moved to align the enlarged portion Ib of the space With the head Isa of the stud. The disc I5 may then be lifted olif `the body Il) by passing the head I6a of the stud I6 through the enlarged portion I8b of the space. Then the disc I5 or any of the other discs supplied with the device may be engaged upon the body I0 by reversing the above procedure.

The computing and recording of the sterile and fertile periods of the menstruation cycle is done in the following: For the sake of illustration let us assume that it is the month of February and that the Woman using the device has a 28 day menstruation cycle. Furthermore, let us assume that the first day of the menstruation cycle occurred on the first day of February, the disc I5 is moved to align the equal area lia marked 1 with the equal space Ida marked 1. The device will then be set up as shown in Fig. 1, and Will indicate that from the lst of February to the 9th of February the user will be sterile. From the 10th to the 17th the user Will be fertile and so on. The 29th day which is the lst of March will start the next menstruation cycle and so on.

It is to be understood lthat disc I5 may have any other readingy matter thereon or some of the reading matter may be eliminated. It may be printed with the data of Menstruation only.

without any reference to Fortile and Sterile periods.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as denned in the appended claims.

Having thus` described my invention, what I claim as new, and desire to secure by United States Letters Patent is:

1. A computing and recording device for sterile and fertile periods, comprising a flat body having an opening, a movable member movably mounted behind said body and having areas selectively alignable with said opening and each imprinted with the name of diierent month, a circular area on the front of said flat body and imprinted with 31 equal spaces representing 3l days and consecutively numbered from 1 to 3l, and a disc coaxially rotatvely mounted on the iront of said flat body and having lan outer area imprinted with equal spaces consecutively numbered from 1 to 31 and alignable with said previously mentioned spaces, and areas on said disc adjacent said equal spaces imprinted with sterile periods yand fertile periods for a menstruation cycle, means for supporting said disc upon said body so that it may be interchanged with other discs supplied with said device, comprising a stud extending through said disc and flat body, resilient means adjacent the back face of said body for urging the head of said stud into face contact with said disc, and a bayonet shaped tab formed in said disc adjacent the opening in said disc through which said stud extends and bendable out of the plane of said dios forming a space through which the head of said stud may be passed for freeing said disc.

2. A computing and recording device for sterile and fertile periods, comprising a fiat body having an opening, a movable member movably mounted behind said body and having areas selectively alignable with said opening and each imprinted with the name of a diierent month, a circular `area on the front of said flat body and imprinted with 31 equal spaces representing 31 days and consecutively numbered from 1 to 31, and a disc coaxially rotatively mounted on the front of said flat body and having an outer area imprinted with equal spaces consecutively numbered from l to 3l and alignable with said previously mentioned spaces, and; areas on said disc adjacent said equal spaces imprinted with sterile periods and fertile periods for a menstruation cycle, means for supporting said disc upon said body so that it may be interchangcd with other discs supplied with said device, comprising a stud extending through said disc and flat body, resilient means adjacent the back` face of said body for urging the head of said stud into face contact with said disc, `and a ybayonet shaped tab formed in said disc adjacent the opening in said disc through which said stud extends and bendable out of the plane of said disc forming a space through which the head of said stud may be passed for freeing said disc, said resilient comprising a spring coaxially mounted pon said stud.

JOHN CWIEIQiLO.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2725195 *Aug 16, 1954Nov 29, 1955Rueff Rene HMenstrual period calculating device
US2735618 *Feb 28, 1952Feb 21, 1956 venable
US3534905 *Jul 3, 1968Oct 20, 1970Leo KullMenstrual cycle indicating device
US3850134 *Aug 8, 1973Nov 26, 1974V ColasuonoTallying device
US4886010 *Sep 22, 1988Dec 12, 1989Ralph StutzmanClothing wear monitoring device
US6637137Mar 25, 2002Oct 28, 2003Lisha CosterGestation calendar
Classifications
U.S. Classification235/113, D19/27, 235/88.0RC, 235/61.00B, 235/70.00R, 235/88.00R, 235/85.0FC