Motor-driven impulse sender having a preselector for setting the number of impulses to be transmitted

Claim 1

AN IMPULSE GENERATOR FOR EXPRESSING PRESELECTED DIGIT VALUES, COMPRISING A MECHANICAL COUNTING MECHANISM HAVING A PLURALITY OF COUNTING WHEELS OPERATIVELY CONNECTED IN PREDETERMINED RATIOS, A SETTING RING CARRIED BY AND ROTATABLE WITH EACH COUNTING WHEEL, EACH RING BEING ADJUSTABLE RELATIVE TO ITS COOPERABLE WHEEL ABOUT THE AXIS OF THE LATTER, CONTACT MEANS FOR EACH WHEEL, EACH RING HAVING CONTACT ACTUATING MEANS FOR ITS COOPERABLE CONTACT MEANS, OPERABLE WHEN THE COUNTING WHEELS ARE IN PREDETERMINED RELATIVE POSITIONS, A CAM DRUM COOPERABLE WITH CONTACT MEANS TO ACTUATE THE SAME FOR PRODUCING AN IMPULSE, SAID CAM DRUM BEING OPERABLY CONNECTED TO SAID COUNTING WHEELS FOR SIMULTANEOUS ROTATION THEREWITH, A STEPPING MECHANISM OPERATIVELY CONNECTED TO ROTATE SAID COUNTING WHEELS AND CAM DRUM, AND FURTHER CONTACTS COOPERABLE WITH AND ACTUATABLE BY SAID CAM DRUM, SAID LAST MENTIONED CONTACTS AND THE CONTACTS ASSOCIATED WITH SAID SETTING RING BEING OPERATIVELY DISPOSED IN THE POWER SUPPLY CIRCUIT OF SAID STEPPING MECHANISM WHEREBY SAID SECOND MENTIONED CAM DRUM CONTACTS ARE OPERABLE TO GENERATE IMPULSES IN SAID POWER CIRCUIT DURING PREDETERMINED ACTUATION OF SAID CONTACTS ASSOCIATED WITH SAID SETTING RINGS FOR ACTUATING SAID STEPPING MECHANISM.