Indicating apparatus

Claim 1

MONITOR APPARATUS FOR CYCLICALLY OPERABLE MEANS COMPRISING A ROTARY MONITOR SWITCH HAVING AN ENERGIZING MEMBER AND A CONTACT SUPPORT MEMBER ADAPTED FOR UNIDIRECTIONAL RELATIVE ROTATION, IN SYNCHRONISM WITH THE OPERABLE MEANS TO BE MONITORED, SAID SWITCH EMBODYING A PLURALITY OF CONTACT ELEMENTS, INCLUDING A NUMBER OF CONTACT BUTTONS, CIRCULARLY SPACED UPON SAID SUPPORT MEMBER IN POSITION SUCCESSIVELY TO MAKE ELECTRICAL CONNECTION WITH SAID ENERGIZING MEMBER AS THE MEMBERS ARE RELATIVELY ROTATED, SELECTOR SWITCH AND ASSOCIATED RELAY MEANS FORMING A COMMAND STATION ADAPTED FOR CONNECTION WITH THE MONITOR SWITCH, AND AN OPERABLE DEVICE CONTROLLED BY SAID RELAY MEANS, SAID SELECTOR SWITCH MEANS BEING ADJUSTABLE TO SELECT AND ISOLATE ANY DESIRED ONE OF SAID BUTTONS AS SIGNAL FEED-BACK MEANS OPERABLE, WHEN ELECTRICALLY CONNECTED WITH SAID ENERGIZING MEMBER, TO DELIVER AN ACTUATING SIGNAL, AT THE COMMAND STATION, FOR THE ACTUATION OF THE OPERABLE DEVICE BY SAID RELAY MEANS, SELECTIVELY OPERABLE DIGIT DISPLAY APPARATUS FOR SHOWING THE ANGULAR DISPLACEMENT OF THE ENERGIZING MEMBER, FROM A DATUM POSITION, WHEN ENGAGED WITH A SELECTED CONTACT BUTTON, AND ACTUATING MEANS ENERGIZED IN RESPONSE TO ENGAGEMENT OF SAID ENERGIZING MEMBER WITH THE SELECTED CONTACT BUTTON TO ACTIVATE SAID DISPLAY APPARATUSE.