Connecting means for heat exchanger cores

Claim 1

HEAT EXCHANGER APPARATUS COMPRISING TWO ELONGATED PLATE TYPE CORES CONNECTED TOGETHER AT ONE END WHEREIN EACH CORE IS SUBSTANTIALLY RECTANGULAR IN CROSS-SECTION NORMAL TO THE LONGITUDINAL AXIS THEREOF AND INCLUDES A PLURALITY OF ELONGATED SHEETS DISPOSED IN SUPERPOSED SPACE RELATIONSHIP DEFINING THEREBETWEEN FIRST AND SECOND GROUPS OF FLUIID PASSAGES, THE OUTERMOST OF SAID SHEETS DEFINING FIRST AND SECOND OPPOSITE SIDES OF SAID CORE, THE LONGITUDINAL EDGES OF SAID SHEETS BEING COEXTENSIVE WITH THE THIRD AND FOURTH OPPOSITE SIDES OF SAID CORE, MEANS CLOSING SAID PASSAGES AT THE PERIPHERIES THEREOF, EACH PASSAGE OF SAID FIRST GROUP HAVING AN END PORT OPENING THROUGH SAID ONE END FOR COMMUNICATION WITH THE END PORTS OF THE OTHER CORE AND EACH PASSAGE OF SAID SECOND GROUP HAVING A SIDE PORT OPENING THROUGH SAID THIRD SIDE ADJACENT SAID ONE END; SAID CORES BEING POSITIONED IN END-TO-END RELATIONSHIP WHEREIN SAID FIRST, SECOND, THIRD, AND FOURTH SIDES OF ONE CORE ARE RESPECTIVELY SUBSTANTIALLY COPLANAR WITH THE FIRST, SECOND, THIRD AND FOURTH SIDES OF THE OTHER CORE; A HEADER EXTENDING LONGITUDINALLY OF THE CORES OVERLYING THE SIDE PORTS OF EACH CORE AND TERMINATING SUBSTANTIALLY SHORT OF THE REMOTE ENDS OF SAID CORES; MEANS FOR TRANSMITTING A SUBSTANTIAL PORTION OF THE FORCE EXERTED BY SAID HEADER TO SAID FIRST AND SECOND SIDES OF EACH CORE IN AREAS SEALINGLY SEPARATING SAID FIRST PORTS FROM SAID SECOND PORTS.