ES213331A1 - A device for chronological, cyclic or non-cyclic investigations, specially performed as a perpetuomestrual and obstetric calendar (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

A device for cyclical or non-cyclical chronological investigations that can be carried out especially as a perpetual menstrual and obstetric calendar that constitutes a new industrial product that can be carried out in several variants according to the aims pursued in the investigations and that uses, in whole or in part, the following characteristics that define it as base the years of the gregorian era: a set of fourteen tables or leaves-keys of annual calendars and precisely seven for the current years and seven for the leap years that present all the combinations of the fourteen calendars of the gregorian era each of the which begins with a different day, each of tables being constituted by a frame within which are drawn fourteen horizontal rows cut or twenty-five vertical columns that originate boxes in which are inscribed one after another from one horizontal row to another the dates of the months successive of the year indicated months s on each side of the table both on the right and on the left; the boxes or the figures and characters that concern the dates of the even months are alternate color different from the one adopted for the designation of the figures and characters of the odd months distinguishing these two different colors the months one after the other with what facilitate the reading of the calendar while the upper part of the key-sheet of the dates thus constituted takes as a frontispiece a strip with the days of the week corresponding to the dates arranged in the vertical columns and this according to the fourteen variants previously provided according to twenty-eight days united or not. (Machine-translation by Google Translate, not legally binding)