ES4590U - Perpetual periodic indicator of female physiological fecundity (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Perpetual periodic indicator of female physiological fecundity, essentially characterized by being constituted by a limb divided into 365 equal parts, corresponding to the days of the year, grouped and numbered according to the days of each month, each grouping bearing the name of the corresponding month; being on said limb, a disc of equal diameter, concentric, which can rotate on the common axis, and which has four recesses on its periphery, one of which covers and leaves visible the divisions of each one and a half months, approximately, the other one to the days that the fertility period lasts, and the other two to the dates of the rule following to the previous period, and to the one of the childbirth; presenting this disc on the edge diametrically opposite to the greater recess some divisions that represent the different menstrual cycles; keeping the different portions of the device with each other, the distances corresponding to the days calculated physiologically for the succession of phenomena, and finally having mounted on the axis of the limb and disk, concentric with them, a small rotating disk that extends in two indexes that they form an angle of approximately 172º between them, one of whose indexes indicates the divisions of the limbus and the other the divisions of the disc. (Machine-translation by Google Translate, not legally binding)