Pneumatic conveying apparatus

Claim 1

IN A PNEUMATIC CONVEYING APPARATUS HAVING AN ELONGATED SUPPORT TRACK; A POWER DRIVEN CARRIAGE HAVING A PAIR OF WHEELS SUPPORTING THE CARRIAGE ON SAID TRACK FOR MOVEMENT THEREALONG; A SUBSTANTIALLY RIGID AIR CONDUCTING CONDUIT; MEANS CONNECTED TO SAID RIGID CONDUIT FOR REDUCING THE AIR PRESSURE THEREIN BELOW THE SURROUNDING ATMOSPHERE; AN ELONGATED TELESCOPIC SUPPORT CONDUIT HAVING A PIVOT AND SECTION MOUNTED ON SAID RIGID CONDUIT AND A SLIDING END SECTION RETRACTABLE WITHIN THE PIVOT END SECTION, SAID SLIDING END SECTION HAVING AN ARCUATELY CURVED EXTENDED ELBOW END; A SADDLE MEMBER RIGIDLY MOUNTED ON THE SLIDING END SECTION ADJACENT TO ITS EXTENDED ELBOW END PIVOTALLY SUPPORTING THE SUPPORT CONDUIT ON THE CARRIAGE; AN ELONGATED TELESCOPIC MANIPULATABLE CONDUIT HAVING A LOWER SECTION AND AN UPPER SECTION LONGITUDINALLY SLIDABLE THEREIN; MEANS MOUNTED SAID UPPER SECTION OF THE MANIPULATABLE CONDUIT ON THE EXTENDED ELBOW END OF THE SLIDING END SECTION OF THE SUPPORT CONDUIT IN DEPENDING RELATION THEREFROM FOR UNIVERSAL ANGULAR RELATIVE MOVEMENT; A CONTROL CIRCUIT FOR THE POWER DRIVEN CARRIAGE; THE IMPROVEMENT COMPRISING A PAIR OF SWITCH MEMEBR CONNECED IN THE CIRCUIT MOUNTED ON THE EXTENDED END OF THE SLIDING END SECTION OF THE SUPPORT CONDUIT IN SUBSTANTIALLY DIAMETRICALLY OPPOSED RELATION IN A PLANE NORMAL TO THE LONGITUDINAL AXIS OF SAID SUPPORT CONDUIT, SAID SWITCHES INDIVIDUALLY INCLUDING DEPENDING PROBES EXTENDED ADJACENT TO THE UPPER SECTION OF THE MANIPULATABLE CONDUIT; AND A CONTROL RING RIGIDLY MOUNTED IN RADIALLY SPACED RELATION ON SAID UPPER SECTION OF THE MANIPULATABLE CONDUIT IN CIRCUMSCRIBING RELATION TO SAID PROBES PROVIDING A PASSAE FREELY TO RECEIVE THE PROBES AND BEING ALTERNATELY ENGAGEABLE THEREWITH TO COMPLETE INCIDENT TO ANGULAR POSITIONING THE MOTOR DRIVEN CARRIAGE INCIDENT TO ANGULAR POSITIONING OF THE MINIPULATABLE CONDUIT IN A PLANE ALIGNED WITH THE PLANE OF THE SWITCHES, THE CARRIAGE MOTIVATION BEING IN THE DIRECTION OF SAID ANGULAR POSITIONING OF THE MANIPULATABLE CONDUIT, AND SAID CONTROL RING BEING MOVABLE RELATIVE TO THE PROBES DURING ANGULAR POSITIONING OF THE MANIPULATABLE CONDUIT GENERALLY IN A PLANE ALIGNED WITH THE LONGITUDINALLY AXIS OF THE SUPPORT CONDUIT.