Mis-feed detecting system

Claim 1

IN AN APPARATUS FOR SUCCESSIVELY FEEDING DOCUMENTS ALONG A DOCUMENT FEED PATH IN END TO END SPACED RELATION, AND HAVING MEANS OPERATING IN UNIFORM TIMED CYCLICAL SEQUENCE TO FEED ONE DOCUMENT DURING EACH CYCLE AND ESTABLISH A DOCUMENT FEED CYCLE, A MIS-FEED DETECTING SYSTEM COMPRISING: SENSING MEANS FOR SENSING THE PRESENCE AND ABSENCE OF A DOCUMENT AT A PREDETERMINED LOCATION ALONG SAID DOCUMENT FEED PATH AND PROVIDING CORRESPONDING PRESENCE AND ABSENCE INDICATING SIGNALS; CYCLICAL TIMING MEANS OPERATIVELY CONNECTED TO SAID FEEDING MEANS FOR PRODUCING SERIALLY A FIRST TIMING SIGNAL AND A SECOND TIMING SIGNAL DURING EACH DOCUMENT FEED CYCLE; MEANS OPERATIVELY CONNECTED TO SAID SENSING MEANS AND SAID CYCLICAL TIMING MEANS TO PRODUCE A CONTINUOUS SIGNAL ACTUATED BY THE PRESENCE OF BOTH SAID PRESENCE SIGNAL FROM SAID SENSING MEANS AND SAID FIRST TIMING SIGNAL AND SAID CONTINUOUS SIGNAL CONTINUING THEREAFTER ONLY DURING THE CONTINUED PRESENCE OF SAID PRESENCE SIGNAL; AND MIS-FEED INDICATING MEANS OPERATIVELY CONNECTED TO SAID CONTINUOUS SIGNAL MEANS AND SAID CYCLICAL TIMING MEANS TO PRODUCE A MIS-FEED INDICATING SIGNAL, RESPONSIVE TO THE CONCURRENCE OF SAID SECOND TIMING SIGNAL AND SAID CONTINUOUS SIGNAL.