Manually controlled coding device

Claim 1

IN A CHARACTER CODING AND DISPLAYING ARRANGEMENT, A CHARACTER DISPLAYING MEMBER CONSISTING OF A TRANSPARENT MEMBER AND OF A MASK FITTED WITH 2NX2P CHARACTER IMAGES ARRANGED IN A GRID ARRAY OF 2N ROWS AND 2P COLUMNS OF IMAGES TO BE SELECTIVELY ILLUMINATED, AND ALSO OF 2N ILLUMINATING DEVICES EACH ASSOCIATED WITH A ROW OF IMAGES AND OF 2P ILLUMINATING DEVICES EACH ASSOCIATED WITH A COLUMN OF IMAGES, EACH OF SAID ILLUMINATING DEVICES BEING ABLE, WHEN ENERGIZED, TO ILLUMATE A ROW, OR COLUMN, OF IMAGES; A VOLTAGE SOURCE; A FIRST SELECTING UNIT COMPRISING A FIRST MANUALLY-SET COMMUTATOR CONSISTING OF A PLURALITY OF COMMUTATOR SECTIONS HAVING EACH A SINGLE WIPER ARM CONNECTED TO SAID VOLTAGE SOURCE AND MOUNTED ON A COMMON SHAFT AND 2N CONTACT STUDS, WITH A FIRST COMMUTATOR SECTION WHOSE CONTACT STUDS ARE CONNECTED TO ENERGIZE ONE OF SAID 2N ROW ILLUMINATING DEVICES ACCORDING TO THE ANGULAR POSITION OF SAID WIPER ARM AND WITH N COMMUTATOR SECTIONS WHOSE CONTACT STUDS ARE CONNECTED TO N CODE OUTPUT WIRES IN ORDER TO SELECTIVELY ENERGIZE A DIFFERENT CODED COMBINATION OF SAID WIRES IN ACCORDANCE WITH SAID ANGULAR POSITION OF SAID WIPER ARM; AND A SECOND SELECTING UNIT COMPRISING A SECOND MANUALLY SET COMMUTATOR CONSISTING OF A PLURALITY OF COMMUTATOR SECTIONS HAVING EACH A SINGLE WIPER ARM CONNECTED TO SAID VOLTAGE SOURCE AND MOUNTED ON A COMMON SHAFT AND 2P CONTACT STUDS, WITH A FIRST COMMUTATOR SECTION WHOSE CONTACT STUDS ARE CONNECTED TO ENERGIZE ONE OF SAID 2P COLUMN ILLUMINATING DEVICES ACCORDING TO THE ANGULAR POSITION OF SAID WIPER ARM AND WITH P COMMUTATOR SECTIONS WHOSE CONTACT STUDS ARE CONNECTED TO P CODE OUTPUT WIRES IN ORDER TO SELECTIVELY ENERGIZE A DIFFERENT CODED COMBINATION OF SAID WIRES IN ACCORDANCE WITH SAID ANGULAR POSITION OF SAID WIPER ARM; WHEREBY A UNIQUE DUAL COMBINATION OF SAID WIRES IS SET UNDER VOLTAGE IN CORRESPONDENCE WITH THE CHARACTER IMAGE PERTAINING BOTH TO THE ROW OF CHARACTER IMAGES ILLUMINATED AND TO THE COLUMN OF CHARACTER IMAGES ILLUMINATED.