Turbine ventilator

Claim 1

A TURBINE VENTILATOR INCLUDING AN UPSTANDING ROTOR ASSEMBLY ADAPTED TO BE SUPPORTED FOR ROTATION ABOUT A VERTICAL AXIS AND IN VERTICALLY SPACED RELATION ABOVE THE UPPER END OF AN UPSTANDING VENTILATION OR SMOKE PIPE, SAID ROTOR ASSEMBLY INCLUDING A LOWER UPSTANDING SLEEVE PORTION AND AN UPPER HORIZONTAL SUPPORT PLATE SUPPORTED IN VERTICALLY SPACED RELATION ABOVE SAID SLEEVE PORTION FOR ROTATION THEREWITH, A PLURALITY OF STRAP-LIKE VANE MEMBERS INCLUDING ONE SET OF CORRESPONDING END PORTIONS, MEANS SECURING SAID ONE SET OF END PORTIONS TO SAID UPPER SUPPORT PLATE WITH SAID ONE END PORTIONS SUBSTANTIALLY HORIZONTALLY DISPOSED IN A CIRCLE ABOUT SAID PLATE, AND WITH THE LONGITUDINAL CENTERLINES OF THE END PORTIONS OF SAID SET OF END PORTIONS DISPOSED TANGENTIAL TO SAID CIRCLE, THE FREE END PORTIONS OF SAID VANE MEMBERS CURVING SMOOTHLY DOWNWARDLY AND INWARDLY TOWARD AND SECURED TO CORRESPONDING PORTIONS OF SAID SLEEVE PORTION, SAID VENTILATOR INCLUDING AN UPSTANDING TUBULAR MOUNTING MEMBER HAVING ITS UPPER END LOOSELY TELESCOPED INTO THE LOWER END OF SAID SLEEVE PORTION, SAID TUBULAR MOUNTING MEMBER BEING ADAPTED TO BE SECURED TO THE UPPER END OF SAID PIPE IN TELESCOPIC ENGAGEMENT THEREWITH, SAID MOUNTING MEMBER INCLUDING A SPIDER SUPPORTING A CENTRALLY DISPOSED MOUNTING PORTION, AN UPSTANDING SHANK PORTION SUPPORTED AT ITS LOWER END FROM SAID SPIDER, SAID SLEEVE PORTION INCLUDING A SECOND SPIDER DISPOSED ABOVE SAID TUBULAR MOUNTING MEMBER AND DEFINING A CENTRALLY DISPOSED HUB SPACED ABOVE THE FIRSTMENTIONED SPIDER, AN ANTIFRICTION SLEEVE SUPPORTED IN SAID HUB AND JOURNALED ON SAID SHANK PORTION, SAID PLATE BEING PROVIDED WITH A CENTRALLY DISPOSED APERTURE, AN ANTIFRICTION CAP SECURED THROUGH SAID APERTURE AND DEPENDING DOWNWARDLY THEREFROM, THE LOWER END OF SAID CAP HAVING A VERTICAL BLIND BORE FORMED THEREIN INCLUDING A CONCAVE SEMISPHERICAL UPPER END WALL, SAID UPSTANDING SHANK PORTION INCLUDING A CONVEX SEMISPHERICAL UPPER END SEATED AGAINST SAID SHANK PORTION WITH ITS UPPER AND LOWER ENDS ABOUT SAID SHANK PORTION WITH ITS UPPER AND LOWER ENDS TELESCOPINGLY ENGAGING WITH SAID CAP AND SAID ANTIFRICTION SLEEVE, RESPECTIVELY.