Pneumatic dispatch system

Claim 1

SERVICE APPARATUS FOR THE DISPATCHING OF A MATERIAL CARTRIDGE BETWEEN A FIRST STATION AND A SECOND STATION, COMPRISING: A PAIR OF PNEUMATIC TUBE LINES OPERATIVELY INTERCONNECTING THE SAID STATIONS, ONE OF SAID LINES ADAPTED TO CONVEY A CARTRIDGE FROM THE FIRST STATION TO THE SECOND STATION, AND THE OTHER OF SAID LINES ADAPTED TO CONVEY A CARTRIDGE FROM THE SECOND STATION TO THE FIRST STATION; A RECEIVER AT EACH STATION, EACH RECEIVER BEING ADAPTED TO RECEIVE A CARTRIDGE DISPATCHED THROUGH THE ASSOCIATED ONE OF SAID LINES; EACH OF SAID LINES TERMINATING IN A DOWNWARDLY-DIRECTED STRETCH TO PROVIDE THAT THE CARTRIDGE WILL ENTER THE RECEIVER DOWNWARDLY, THE RECEIVERS BEING OPERATIVELY OPEN AT THE TOP TO RECEIVE THE CARTRIDGE THROUGH THE TOP WHEN THE RECEIVER IS IN RECEIVING POSITION; AN ACCESS DOOR AT EACH STATION; THE SAID RECEIVERS BEING MOVABLY SUPPORTED FOR MOVEMENT BETWEEN A RECEIVING POSITION FOR RECEIVING A CARTRIDGE FROM ONE LINE LEADING FROM THE OTHER STATION, AND A DISPATCHING POSITION IN WHICH THE BOTTOM OF THE RECEIVER IS OPERATIVELY ALIGNED WITH THE BOTTOM LINE FOR DISPATCHING A CARTRIDGE TO THE OTHER STATION; EACH RECEIVER BEING OPERATIVELY CONNECTED TO THE ACCESS DOOR OF THE RESPECTIVE STATION TO PROVIDE THAT WHEN THE DOOR IS CLOSED THE RECEIVER IS IN RECEIVING POSITION AND WHEN THE DOOR IS OPEN THE RECEIVER IS IN DISPATCHING POSITION; MOTOR MEANS AT EACH STATION FOR MOVING THE ASSOCIATED DOOR AND RECEIVER COMBINATIONS BETWEEN THE POSITIONS DESIGNATED ABOVE; FIRST ABUTMENT MEANS AT EACH STATION FOR BLOCKING MOVEMENT OF A CARTRIDGE MOVING INTO THE RESPECTIVE RECEIVER FROM THE OTHER STATION, THE SAID ABUTMENT MEANS BEING OPERATIVE TO BLOCK A CARTRIDGE WHEN THE RECEIVER IS IN RECEIVING POSITION BUT NOT BLOCKING A CARTRIDGE WHEN THE RECEIVER IS IN DISPATCHING POSITION; SECOND ABUTMENT MEANS AT EACH STATION AND ADAPTED TO BLOCK MOVEMENT OF A CARTRIDGE WHEN THE ASSOCIATED RECEIVER IS IN DISPATCHING POSITION; SAID SECOND ABUTMENT MEANS EACH COMPRISING A BLOCKING MEMBER CARRIED BY SAID RECEIVER AND MOVABLE BETWEEN A BLOCKING POSITION IN WHICH IS OPERATIVELY BLOCKS MOVEMENT OF A CARTRIDGE, AND A NON-BLOCKING POSITION IN WHICH IT DOES NOT BLOCK SUCH MOVEMENT; MEANS BIASING THE SAID BLOCKING MEMBER TO NON-BLOCKING POSITION; A CONTROL MEMBER OPERATIVELY CONNECTED TO THE BLOCKING MEMBER OF THE SECOND STATION; A CONTROL PAWL AT THE SAID SECOND STATION; THE PAWL HAVING A FIRST MEANS OPERATIVELY ENGAGEABLE WITH SAID CONTROL MEMBER TO POSITION SAID BLOCKING MEMBER IN BLOCKING POSITION WHEN SAID RECEIVER IS IN DISPATCHING POSITION; THE PAWL HAVING A SECOND MEANS OPERATIVELY ENGAGEABLE WITH SAID CONTROL MEMBER TO POSITION SAID BLOCKING MEMBER IN NON-BLOCKING POSITION WHEN SAID RECEIVER IS IN DISPATCHING POSITION; MOTOR MEANS AT THE SECOND STATION FOR MOVING THE CONTROL PAWL TO BRING SELECTIVELY EACH OF THE SAID MEANS INTO OPERATIVE ENGAGEMENT AS DESCRIBED ABOVE; MEANS AT THE FIRST STATION FOR CONTROLLING THE DOOR-ANDRECEIVER MOTOR MEANS AT BOTH THE FIRST AND SECOND STATIONS; MEANS AT THE FIRST STATION FOR CONTROLLING THE MOTOR MEANS, AT THE SECOND STATION, WHICH CONTROL THE CONTROL PAWL; SENSING DEVICES ADJACENT THE BEGINNING OF EACH OF THE SAID LINES AND ADAPTED TO ENERGIZE THE ASSOCIATED DOOR-AND-RECEIVER MOTOR MEANS TO CLOSE THE ASSOCIATED DOOR AND TO POSITION THE ASSOCIATED RECEIVER INTO RECEIVING POSITION UPON THE PASSING OF A CARTRIDGE PAST THE RESPECTIVE SAID SENSING DEVICE; AND SENSING DEVICES ADJACENT THE END OF EACH OF THE SAID LINES AND ADAPTED TO ENERGIZE THE ASSOCIATED DOOR-ANDRECEIVER MOTOR MEANS TO OPEN THE ASSOCIATED DOOR AND TO POSITION THE ASSOCIATED RECEIVER INTO DISPATCHING POSITION UPON THE PASSING OF THE CARTRIDGE PAST THE RESPECTIVE SAID SENSING DEVICE.