Control mechanism for preselection counter

Claim 1

A CONTROL MECHANISM FOR A PRESELECTION COUNTER RESPONSIVE TO IMPULSES AND HAVING INDICATING MEANS ADAPTED TO BE MOVED IN ONE DIRECTION TO A PRESELECTED POSITION, AND RESETTING MEANS FOR AUTOMATICALLY RETURNING SAID INDICATING MEANS TO THE ZERO POSITION AFTER REACHING SAID PRESELECTED POSITION, SAID CONTROL MECHANISM COMPRISING MECHANICAL MEANS ASSOCIATED WITH SAID COUNTER, AND SWITCH MEANS ADAPTED TO BE ACTED UPON BY SAID MECHANICAL MEANS TO PREVENT ANY IMPULSES FROM ACTING UPON SAID COUNTER AFTER SAID INDICATING MEANS REACH SAID PRESELECTED POSITION AND DURING THE RETURN MOVEMENT THEREOF UNTIL SAID INDICATING MEANS HAVE BEEN RESET TO THE ZERO POSITION, SAID INDICATING MEANS COMPRISING AT LEAST ONE COUNTER WHEEL, SAID MECHANICAL MEANS COMPRISING A CIRCULAR DISK CONNECTED TO AND ROTATABLE TOGETHER WITH SAID COUNTER WHEEL AND HAVING A NOTCH IN ITS PERIPHERAL SURFACE IN A POSITION IN A FIXED RELATION TO THE PRESELCTED POSITION OF SAID COUNTER WHEEL, A LEVER PIVOTABLE ABOUT A FIXED AXIS AND HAVING AN END PORTION ADAPTED TO ENGAGE WITH SAID PERIPHERAL SURFACE OF SAID DISK AND TO DROP INTO SAID NOTCH WHEN SAID COUNTER WHEEL IS TURNED TO SAID PRESELECTED POSITION, A LOCKING MEMBER OPERATIVELY ASSOCIATED WITH AND ADAPTED TO BE MOVED BY SAID LEVER IN ACCORDANCE WITH THE PIVOTING MOVEMENT THEREOF, SAID SWITCH MEANS COMPRISING A FIRST SWITCH AND A SECOND SWITCH SPACED FROM EACH OTHER, SAID SECOND SWITCH CONNECTED INTO AN IMPULSE LINE LEADING TO SAID COUNTER AND WHEN DEPRESSED TO ITS CLOSED POSITION CLOSING SAID IMPULSE LINE SO THAT IMPULSES CAN ACT UPON SAID COUNTER, AND WHEN RELEASED TO ITS OPEN POSTION INTERRUPTING SAID IMPULSE LINE SO THAT NO IMPULSES CAN REACH SAID COUNTER DURING THE PERIOD OF THE RETURN OF SAID COUNTER WHEEL TO ITS ZERO POSITION, A CONTROL MAGNET HAVING AN ARMATURE, A BELL CRANK PIVOTABLE ABOUT A FIXED AXIS, A LINK PIVOTABLY CONNECTING ONE ARM OF SAID BELL CRANK TO SAID ARMATURE, THE END OF THE SECOND ARM OF SAID BELL CRANK DISPOSED BETWEEN SAID SWITCHES, SAID FIRST SWITCH BEING ELECTRICALLY CONNECTED TO SAID MAGNET AND ADAPTED TO ENERGIZE THE SAME WHEN SAID COUNTER WHEEL REACHES SAID PRESELECTED POSITION AND THE END PORTION OF SAID LEVER DROPS INTO SAID NOTCH AND SAID LOCKING MEMBER THEREBY DISENGAGES FROM SAID FIRST SWITCH, WHEREBY SAID ARMATURE IS MOVED BY SAID MAGNET AND SAID BELL CRANK IS THEREBY PIVOTED FROM IT FIRST POSITION IN WHICH IT HOLDS SAID SECOND SWITCH IN SAID CLOSED POSITION TO A SECOND POSITION IN WHICH, AFTER SAID SECOND SWITCH IS RELEASE TO ITS OPEN POSITION AND SAID IMPULSE LINE IS THEREBY INTERRUPTED, IT DEPRESSES SAID FIRST SWITCH TO SWITCH OFF SAID MAGNET SO THAT SAID BELL CRANK IS PIVOTED BACK AGAINST AND ACTUATES SAID SECOND SWITCH SO AS AGAIN TO CLOSE SAID IMPULSE LINE, AND MEANS CONTROLLED BY ONE OF THE MOVABLE ELEMENTS OF SAID MECHANISM TO ACTUATE SAID RESETTING MEANS TO RETURN SAID COUNTER WHEEL TO IS ZERO POSITION DURING THE PERIOD IN WHICH SAID IMPULSE LINE IS INTERRUPTED BY SAID SECOND SWITCH.