Stapling machine

Claim 1

A STAPLING MACHINE FOR STAPLING A BOOK OF SHEETS COMPRISING A FRAME INCLUDING A PAIR OF UPRIGHTS SPACED APART A DISTANCE TO PASS A BOOK OF SHEETS THEREBETWEEN AND HAVING A TOP, A RECEIVING PLATFORM MOUNTED ON THE FRAME ON ONE SIDE OF THE PAIR OF SPACED UPRIGHTS AND BELOW THE TOP THEREOF, THE RECEIVING PLATFORM CONSTITUTING THE SOLE RECEIVING MEANS FOR THE SHEETS, A MAIN SHAFT MOUNTED ON THE FRAME ON A LEVEL BELOW THE RECEIVING PLATFORM AND CROSSWISE RELATIVELY TO THE RECEIVING PLATFORM AND IN THE REGION OF THE UPRIGHTS, A NORMALLY DISENGAGED CLUTCH FOR CONNECTION WITH THE MAIN SHAFT AND OPERABLE WHEN ENGAGED TO DISENGAGE UPON ONE REVOLUTION OF THE MAIN SHAFT, MEANS TO ENGAGE THE CLUTCH, AN UPPER SLIDE BAR, MEANS MOUNTING THE UPPER SLIDE BAR ON THE UPRIGHTS FOR VERTICAL MOVEMENT AND ABOVE THE LEVEL OF THE RECEIVING PLATFORM, AT LEAST ONE STAPLING MEANS EACH INCLUDING A STAPLING HEAD MOUNTED ON THE FRAME, EACH STAPLING HEAD HAVING A MOVABLE PART OPERABLE BY THE UPPER SLIDE BAR, MEANS CONNECTING THE MAIN SHAFT WITH THE UPPER SLIDE BAR TO RECIPROCATE THE LATTER AND SAID MOVABLE PART OF THE STAPLING HEAD UP AND DOWN ONCE FOR EACH ROTATION OF THE MAIN SHAFT, STOP MEANS, MEANS MOUNTING THE STOP MEANS ON THE FRAME ADJACENT TO THE STAPLING MEANS AND ON THE OPPOSITE SIDE THEREOF FROM THE RECEIVING PLATFORM AND FOR MOVEMENT ABOVE AND BELOW THE LEVEL OF THE RECEIVING PLATFORM, MEANS CONNECTING THE MAIN SHAFT WITH THE STOP MEANS TO LOWER THE SAME BELOW PLATFORM LEVEL AFTER THE STAPLING MEANS HAS STAPLED THE BOOK AND STARTED ITS UPWARD RETURN AND TO HOLD THE STOP MEANS DOWN FOR A DURATION TO ALLOW THE BOOK TO PASS THEREOVER AND THEREAFTER TO RAISE THE STOP MEANS FOR EACH REVOLUTION OF THE MAIN SHAFT, BOOK EJECTING MEANS CARRIED BY AT LEAST ONE OF THE PARTS INCLUDING THE FRAME AND THE RECEIVING PLATFORM TO EJECT THE STAPLED BOOK BENEATH THE HEAD OF THE STAPLING MEANS TO SAID DELIVERY MEANS, AND MEANS CONNECTED WITH THE MAIN SHAFT TO OPERATE THE BOOK EJECTING MEANS AFTER SAID MOVABLE PART OF THE STAPLING MEANS HEAD HAS LIFTED FROM THE BOOK.