Ball type erection means

Claim 1

ERECTING MEANS FOR A GYROSCOPIC ELEMENT ADAPTED TO FUNCTION AS A VERTICAL REFERENCE AXIS BUT SUBJECT TO DISPLACEMENT OF SAID AXIS, COMPRISING: AN ESSENTIALLY CLOSED HOUSING SECURED TO THE ELEMENT, MEANS DEFINING A PASSAGE FOR FLOW OF AIR FROM A SUITABLE SOURCE INTO SAID HOUSING, A SPHERE, SAID HOUSING HAVING PORTIONS DEFINING A POCKET TO RECEIVE SAID SPHERE, SAID POCKET BEING SUFFICIENTLY LARGER LATERALLY THAN SAID SPHERE FOR FREE LATERAL ROLLING MOVEMENT OF SAID SPHERE THEREIN OVER A PREDETERMINED AREA UPON DISPLACEMENT OF THE AXIS, THE POCKET HAVING A HORIZONTAL FIDUCIAL SURFACE UPON WHICH THE SPHERE ROLLS, A PLURALITY OF PORTS IN THE HOUSING THROUGH WHICH AIR MAY ESCAPE THEREFROM, SAID PORTS BEING ANGULARLY EQUIDISTANTLY SPACED ABOUT THE POLAR AXIS OF THE SPHERE WHEN THE SAME IS IN NORMAL POSITION, THE EXIT OF EACH PORT BEING DISPLACED ANGULARLY 90* FROM ITS ENTRANCE AND AN ANNULAR SHUTTER POSITIONED OVER THE SPHERE WITH RUNNING CLEARANCE THEREBETWEEN FOR TRANSLATIONAL LATERAL MOVEMENT OF THE SHUTTER BY EXCURSION OF THE SPHERE, SAID SHUTTER BEING ADAPTED TO OBTURATE THE ENTRANCES OF THE PORTS SELECTIVELY AND VARIABLY IN A DIFFERENTIAL MANNER TO VARY THE ENERGY OF THE ESCAPING AIR DIFFERENTIALLY IN ACCORDANCE WITH THE INSTANTANEOUS POSITION OF THE SPHERE.