Patent EA-001011-B1 (EA)
Title: Mechanical system indicating large size calendar date for watch and small clock movements
Inventor: JOURNE FRANCOIS-PAUL
IPC: G04B19/247
Filed: 1998-05-06
Abstract: 1. A mechanical system indicating large size calendar date for watch and small clock movements , characterized in that said mechanical system comprises a dial plate with a large size open window, a block of units comprising a unit disk with indicating ciphers from 0 to 9, forming an integral with a star of units, a block of the ten's of the month with indicating ciphers from 0 to 3 forming an integral with a star of the ten's of the month, wherein the ciphers are applied on the disks of units and of the ten's of the month providing their appearance in succession in the right and correspondingly in the left part of the large size open window, and the stars of units and the ten's of the month are mounted enabling to operate each via a corresponding star arranged on a ring, said ring raised notches drive each star one index notch at a time taking into account thirty one notches per one revolution. 2. A mechanical system of claim 1, characterized in that the blocks of units and of the ten's of the month are mounted on a bottom plate enabling to turn around parallel axes, the distance between which corresponds to the position of the toothed rings of the disks of units and of the ten's of the month. 3. A mechanical system of claim 1 or 2, characterized in that the line, connecting the centers of rotation of the blocks of units and of the ten's of month, is perpendicular to the line, connecting the indicators of 6H-12H on the dial plate. 4. A mechanical system of any one of the preceding claim, characterized in that the large size open window is between the center of the dial plate and the indicators of 6H-12H. 5. A mechanical system of any preceding claim, characterized in that the star indicating the units of the month is arranged on the toothed ring and comprises thirty one notches, wherein said notches are adapted to cooperate with a 10-toothed star indicating the units of the month. 6. A mechanical system of any one of preceding claim, characterized in that the star indicating the ten's of the month comprises four notches which coincide with notches 31, 10, 20 and 30 of the star indicating the units of the month of said toothed ring, wherein the star, indicating the ten's of the month, comprises four teeth. 7. A mechanical system of claim 6, characterized in that the star indicating the ten's of the month is arranged on the toothed ring comprises four additional teeth spaced between said teeth of said star and co-operates with the 8-toothed star of the ten's of the month, wherein the disk of the ten's of the month comprises a series of ciphers 0,0, 1,1, 2,2, 3,3. 8. A mechanical system of any one of the preceding claim, characterized in that the ciphers, drawn on the disks of the units and of the ten's of the month, are tangentially disposed and equidistantly spaced along the periphery of said disks. 9. A mechanical system of one of the preceding claim 2 to 8, characterized in that comprises a spring fixed to the bottom plate, said spring has two branches each of which cooperates with one stars to maintain them in a stable angular position in between the operation. 10. A mechanical system of any one of the preceding claim, characterized in that the toothed ring is fixed on the watch movement. 11. A mechanical system of any one of the preceding claim, characterized in that the toothed ring is the watch movement. 12. The watch movement comprising a system of toothed stars which moves each star one index notch at a time completing a full revolution in thirty one notch, characterized in that said system of toothed stars operates the watch movement of one of the preceding claim.