Cross-folder control

Claim 1

AN APPARATUS OF THE CHARACTER DESCRIBED WHEREIN A FLAT WORK ARTICLE IS ADVANCED ALONG A PATH ON A CONVEYOR AND WHEREIN CROSSFOLDING MEANS IS PROVIDED TO CROSS FOLD THE ARTICLE, FOLDING CONTROL MEANS INCLUDING AN INITIAL LIMIT SWITCH SENSITIVE TO PASSAGE THEREBY OF THE ARTICLE ON SAID PATH, A FINAL LIMIT SWITCH SPACED DOWNSTREAM ON SAID PATH FROM SAID INITIAL LIMIT SWITCH AND ALSO SENSITIVE TO PASSAGE THEREBY OF THE ARTICLE, A FOLDING SWITCH DISPOSED ADJACENT TO SAID PATH BETWEEN SAID INITIAL AND FINAL LIMIT SWITCHES, FIRST ELECTRICAL CIRCUIT MEANS EFFECTIVE UPON SAID CROSSFOLDING MEANS AND INCLUDING SAID FOLDING SWITCH, SECOND ELECTRICAL CIRCUIT MEANS INCLUDING SAID INITIAL AND FINAL LIMIT SWITCHES AND OPERATIVELY EFFECTIVE ON SAID FIRST CIRCUIT MEANS TO RENDER THE FIRST CIRCUIT MEANS INEFFECTIVE WHILE EITHER OF THE LIMIT SWITCHES IS INTERCEPTED BY PASSAGE THEREBY OF THE ARTICLE, SAID FIRST ELECTRICAL CIRCUIT MEANS BEING COMPLETED TO INITIATE A CROSSFOLDING OPERATION AFTER THE TRAILING EDGE OF THE ARTICLE TERMINATES ITS INTERCEPTION OF THE INITIAL LIMIT SWITCH AND BEFORE THE LEADING EDGE OF THE ARTICLE INTERCEPTS SAID FINAL LIMIT SWITCH, THE DISTANCE BETWEEN THE SAID INITIAL LIMIT SWITCH AND THE SAID FOLDING SWITCH ALONG THE PATH OF ARTICLE ADVANCE BEING LESS THAN THE LENGTH OF ANY MINIMUM LENGTH ARTICLE CAPABLE OF BEING FOLDED, WHEREBY TO ASSURE ACTUATION OF SAID FOLDING SWITCH BY LEADING EDGE OF SUCH ARTICLE BEFORE THE TRAILING EDGE LEAVES THE SAID INITIAL LIMIT SWITCH.

Claim 2

AN APPARATUS OF THE CHARACTER DESCRIBED WHEREIN A FLAT WORK ARTICLE IS ADVANCED ALONG A PATH ON A CONVEYOR AND WHEREIN CROSSFOLDING MEANS IS PROVIDED TO CROSS FOLD THE ARTICLE, FOLDING CONTROL MEANS INCLUDING AN INITIAL LIMIT SWITCH SENSITIVE TO PASSAGE THEREBY OF THE ARTICLE ON SAID PATH, A FINAL LIMIT SWITCH SPACED DOWNSTREAM ON SAID PATH FROM SAID INITIAL LIMIT SWITCH AND ALSO SENSITIVE TO PASSAGE THEREBY OF THE ARTICLE, A FOLDING SWITCH DISPOSED ADJACENT TO SAID PATH BETWEEN SAID INITIAL AND FINAL LIMIT SWITCHES, FIRST ELECTRICAL CIRCUIT MEANS EFFECTIVE UPON SAID CROSSFOLDING MEANS AND INCLUDING SAID FOLDING SWITCH, SECOND ELECTRICAL CIRCUIT MEANS INCLUDING SAID INITIAL AND FINAL LIMIT SWITCHES AND OPERATIVELY EFFECTIVE ON SAID FIRST CIRCUIT MEANS TO RENDER THE FIRST CIRCUIT MEANS INEFFECTIVE WHILE EITHER OF THE LIMIT SWITCHES IS INTERCEPTED BY PASSAGE THEREBY OF THE ARTICLE, SAID FIRST ELECTRICAL CIRCUIT MEANS BEING COMPLETED TO INITIATE A CROSSFOLDING OPERATION AFTER THE TRAILING EDGE OF THE ARTICLE TERMINATES ITS INTERCEPTION OF THE INITIAL LIMIT SWITCH AND BEFORE THE LEADING EDGE OF THE ARTICLE INTERCEPTS SAID FINAL LIMIT SWITCH, THE DISTANCE BETWEEN THE SAID INITIAL LIMIT SWITCH AND THE SAID FOLDING SWITCH ALONG THE PATH OF ARTICLE ADVANCE BEING LESS THAN THE LENGTH OF ANY MINIMUM LENGTH ARTICLE CAPABLE OF BEING FOLDED, WHEREBY TO ASSURE ACTUATION OF SAID FOLDING SWITCH BY LEADING EDGE OF SUCH ARTICLE BEFORE THE TRAILING EDGE LEAVES THE SAID INITIAL LIMIT SWITCH.