Pneumatic tube banking system

A two-tube, non-captive carrier pneumatic tube banking system including a teller terminal and a remote customer terminal;

• first and second tubes forming a two-tube carrier conveyor systems connecting the terminals;
• blower means having inlet and outlet means mounted in the customer terminal supplying air to the two-tube system for pressure or vacuum movement of the carrier in tubes of the two-tube system;
• means connecting the first tube with the blower inlet means;
• the first tube acting as a carrier-receive tube for the customer terminal;
• means connecting the second tube with the blower output means;
• the second tube acting as a second tube for the customer terminal;
• the blower thereby supplying air under vacuum at the customer terminal to the first tube and air under pressure at the customer terminal to the second tube;
• muffler means mounted in line each with the means connecting the first and second tubes with the blower inlet ad outlet means respectively to reduce noise emanating from air currents passing through the system;
• the first and second tubes having ends at the customer terminal;
• first blower control means for stopping blower means operation mounted adjacent the first tube customer terminal end;
• second blower control means for starting blower means operation mounted adjacent the second tube customer terminal end;
• said first blower control means being actuated by a carrier discharged from said first tube customer terminal end to stop blower means operation;
• said second blower control means being actuated by a carrier delivered to the second tube customer terminal end to start blower means operation;
• valve housing means mounted in the customer terminal surrounding the first tube customer terminal end;
• there being a carrier arrival opening formed in the valve housing;
• valve means pivotally mounted in the customer terminal normally closing said arrival opening;
• said first blower control means being mounted on the valve housing means;
• movement of the valve means when the valve means is engaged by a carrier discharged from said first tube customer terminal end actuating said first blower control means;
• means connecting the valve housing and the first tube customer terminal end with the muffler means that is connected with the blower inlet;
• the customer terminal arrival opening valve means including flexible flap means;
• the flexible flap means having a main flap member and a secondary flap member;
• the main flap member being pivotally mounted in the customer terminal;
• the secondary flap member being pivotally mounted on the valve housing;
• the flexible flap means members being moved by a carrier discharged from said first tube customer terminal end to open position and falling by gravity thereafter to closed position;
• and said valve means actuation of said first blower control means occurring during movement of the secondary flap member to open position when engaged by a carrier discharged from said first tube customer terminal end, thereby stopping blower means operation.